31 Summerween Party Ideas for a Spooky Summer Bash

If you think the summer could use a little more spookiness, you might want to celebrate Summerween. So, what is Summerween? Summerween is an unofficial summer celebration that brings Halloween fun into the warmer months, mixing spooky décor, costumes and creepy treats with pool parties, BBQs and outdoor movie nights. 

What started as a Gravity Falls reference has grown into a social media and retail trend, with people using it as an excuse to celebrate spooky season early. Similar to “Christmas in July,” Summerween is a way to extend the spooky celebrations or indulge a few months earlier than usual. And if you’re looking for a theme for a summer gathering, Summerween is certain to delight friends and family. So, if you’re convinced to make Summerween your next theme, we’ve got some Summerween party ideas that are sure to be scary fun! 

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• What is Summerween?
• When is Summerween?
• How To Throw A Summerween Party
• Summerween Party Ideas
• Quick Summerween Food, Décor And Activity Ideas
• Summerween FAQ

What is Summerween?

Summerween isn’t an official holiday, but it has become a cultural phenomenon. The holiday celebrates Halloween themes and décor with typical summer activities like pool parties and barbecues. The term was first heard on the cartoon Gravity Falls in a 2012 episode titled “Summerween”. The episode featured the characters celebrating Halloween during the summer and quickly led to fans doing the same. 

Though the cartoon introduced the term to its fans, it became part of the mainstream in the mid-2020s. Now it has become a full-fledged summer party theme. Many retailers are setting out Halloween decorations in the summer for a Summerween party and for early Halloween shopping. And it’s also led people to get creative with their summer gatherings, looking for decorations and food ideas to bring the spooky season into the summer. Enjoying the warmer months with a Halloween vibe is the true Summerween meaning.

When is Summerween?

Summerween is often celebrated on June 22 because of the show Gravity Falls. However, since this isn't an official holiday, there isn’t an official date for Summerween. Many people celebrate Summerween throughout June, July and August. So the best time to host this spooky summer celebration is a date that works best for you and your guests.

If you’re a fan of the show or want to reference Gravity Falls, hosting a Summerween celebration on June 22 or in late June is a great idea. However, later in the summer can be a better option for pool parties and outdoor movies because of the warmer weather. Halloween décor often starts appearing in stores by mid-to-late summer, which can make July and August easier months for finding Summerween decorations. You can use these for Summerween decorations.

How To Throw A Summerween Party

1. Choose Your Summerween Theme

Summerween is a fun way to get creative with summer party themes. And what’s better is that there isn’t one way to throw a Summerween party. You can tailor a Summerween theme to you and your guests’ interests. If you’re a horror movie fan, you may want to throw a party themed like a slasher summer camp. For kids, a haunted luau, a spooky pool party or a pastel pink Halloween might work well. Or maybe you’d want a simple and scary version of a classic summer get-together, like a gothic picnic or a monster barbecue.

2. Set The Tone With Summer-Meets-Halloween Décor

Summerween combines all the best of summer and Halloween. It often features décor in summer colors and tropical elements, with typical fall and Halloween motifs. Think jack-o’-lanterns made of fruit, like watermelons or pineapples, instead of pumpkins, skeletons wearing sunglasses or floaties and beach balls shaped like eyeballs. You can tailor Summerween décor ideas to the theme you choose.

3. Plan Food, Drinks And Activities Together

No party is complete without food and drinks, and creative Summerween food ideas will make the party even more unforgettable. Consider mixing typical fall flavors with a tropical edge, and Halloween motifs with party classics. Like mummy pigs in a blanket, ghost s’mores or spider web taco rings. These will be crowd-pleasing dishes with a fun Summerween twist.

You’ll also want to plan a couple of Summerween activities for your guests to do during the party. Get inspired by some of your favorite fall activities and put a summer twist on them. Bobbing for apples can turn into bobbing for peaches. Or carve summer melons and pineapples like jack-o’-lanterns. Or have a few craft activities, such as making t-shirts or zombie plant pots.

Summerween Party Ideas

1. Host A Haunted Pool Party

What's not to love about a pool party? Especially when you incorporate Summerween-themed pool floats and make skeletons lounge around the pool wearing sunglasses. String up waterproof lights so the pool party can continue as the sun goes down. Your haunted pool party can also be a costume party if you ask guests to dress up like monsters, ghosts or ghouls going to the beach.

Pool party Summerween ideas can even extend to food and drink. Make fruity cocktails or mocktails served with Halloween stirrers. And grill up burgers with jack-o’-lantern faces branded on the buns.

2. Throw A Backyard Horror Movie Night

You don’t have to wait until October to watch your favorite Halloween horror movies. Instead, turn them into Summerween movies and have a backyard movie night. All you have to do is set up a projector and screen, set out a few pillows and blankets, and serve fresh popcorn in Halloween buckets along with a selection of sodas.

Pick out a few scary movies, like classics and horror comedies. Movies like Psycho, Elvira: Mistress of the Dark, Nope, Scary Movie or Bodies Bodies Bodies. Or, if you want to host a backyard scary movie night for kids and families, consider screening movies such as Scooby Doo, Goosebumps or Coraline.

3. Carve Jack-O’-Melons

Carving jack-o’-lanterns is a classic Halloween activity. However, finding fresh pumpkins can be difficult in the summer. Swap out pumpkins for seasonal options like watermelon, cantaloupe and pineapple for a more summery activity. Carving up melons also ties back to what the characters did on Gravity Falls. So, if you’re looking for a way to have a true-to-cartoon version of Summerween, this is an ideal activity.

You should be able to find carving kits online or you can carefully use kitchen knives. It's just a little stickier and messier with fruits, so wear gloves. Plus, the carved-up melons and pineapples can act as Summerween decorations.

4. Plan A Spooky Summer BBQ

It’s always fun going to a barbecue or two over the summer; a spooky summer barbecue is even better. Gather friends and family for a summer barbecue with a twist. Make all the classic barbecue foods on the grill, but give them all fun Halloween names. Serve monster burgers with all kinds of crazy toppings, cook up mummies in a blanket and then serve both with a “bloody” ketchup bar. Be inventive with your creations, like bone-shaped breadsticks, black bean dip with gravestone-shaped chips and cheese slices on a charcuterie board shaped like ghosts.

5. Make Halloween S’mores

If you’re looking for sweet Summerween food ideas, Halloween s’mores are going to be your new favorite. Start by styling the fire like a witch’s fire pit, including a cauldron full of melted chocolate. Then, cut marshmallows into ghost shapes and finish off your s’mores with a variety of orange and black toppings, like sprinkles and M&Ms. If you want to take Summerween on the go, these types of s’mores can be fun for camping. 

6. Create A Haunted Tropical Party

Tropical parties can make you feel like you’re on island time, even if you’re just in your backyard. Add a little spooky element and host a haunted luau this summer by decorating your backyard with skeletons wearing leis and grass skirts for cheeky Summerween décor accented with black hibiscus flowers. Set up tiki torches around the backyard so the party can go from day to night and serve tropical mocktails out of skull cups.

7. Host A Summerween Costume Contest

The one thing we think about when Halloween is mentioned is the classic costume contest. Summerween shouldn't be any different. Challenge your guests to come in character and then compete in a costume contest. Provide a prompt for your guests to come as a character who seamlessly blends summer and Halloween.

Example Halloween costume ideas for summer include Dracula in the Bahamas, zombie lifeguards, haunted tourists, surfing ghosts, undead campers and beach witches. You can also appoint a panel to judge the costume contest and give out awards for the funniest, most creative and spookiest costumes.

8. Plan A Spooky Picnic

Turn a classic summer picnic into a Halloween-themed spectacle by laying out black-and-orange checkered blankets and serving dips in mini cauldrons. Make themed sandwiches, like turkey and cheese shaped like a spider or cut into ghost shapes and finger sandwiches shaped like fingers. Bring your carved Jack-O'-Fruits along with your fruit skewers.

9. Make A Creepy-Cute Drink Station

Blend tropical summer vibes with spooky October energy by layering black cheesecloth over a bright neon tablecloth. For the ultimate creepy-cute centerpiece, serve a vibrant red hibiscus iced tea or a bright green melon punch in clear drink dispensers labeled with playful names like "Ghoul-Aid."

Elevate the fun by freezing gummy worms inside oversized ice cubes and serving the drinks in mason jars with black-and-orange striped straws. Complete the station with a DIY garnish bar featuring watermelon slices cut into bat shapes and lime wheels that look like monster eyes, giving your guests a refreshingly eerie DIY experience in seconds.

10. Set Up A Glow-In-The-Dark Dance Party

When the summer sun sets, transform your space into an electric, eerie glow-in-the-dark party by flipping on a few strategic black lights and turning up the neon. Swap standard decor for UV-reactive orange, green, and pink streamers, and hang glowing faux spiderwebs from the ceiling. For a true Summerween twist, use neon glow-paint to sketch skeleton ribs onto inflatable pool flamingos and toss glowing green beach balls across the floor to get everyone moving.

Keep the energy high by setting up a "Glow Station" packed with neon body paint, glow sticks and flashing monster eyes so guests can turn themselves into dancing ghouls. Pair a playlist of upbeat summer hits and spooky classics with a low-lying fog machine to catch the neon light beams, creating a supernatural nightclub atmosphere that keeps the party hauntingly alive all night.

11. Play Halloween Pool Games

Take your favorite Halloween party ideas and give them a summery, supernatural makeover to keep guests cool and entertained. Throw a dozen glowing green beach balls into the water for a high-energy game of "Monster Volleyball," or throw weighted skeleton bones to the bottom of the pool for a spooky diving challenge. You can even host a "Dead Man’s Float" contest where guests compete to see who can look the most delightfully lifeless while drifting on neon pool noodles.

12. Bob For Peaches Instead Of Apples

Apples are a classic fall staple, but nothing says mid-summer like a basket of juicy, ripe peaches. Fill a galvanized metal tub with ice-cold water, toss in the peaches, and challenge your guests to catch them using only their teeth. Because peach skin is softer and fuzzier than apple skin, it adds a hilarious, squishy texture to the Halloween game.

13. Host A Summer Camp Slasher Party

Channel vintage 1980s horror vibes by transforming your backyard into a retro summer camp with an eerie twist. To mimic this theme, you can set up a canvas tent, lean some wooden oars against the patio and light a fire pit for roasting marshmallows while playing a killer synth-wave playlist in the background. Make it more 80s by inviting guests to dress up as counselor characters or masked wilderness monsters and display drinks like the “final girl” mocktail.

14. Make A Monster Ice Cream Bar

Beat the summer heat with a DIY dessert station where everyone can build their own terrifying sweet treats. Scoop out vibrant green mint chocolate chip, pitch-black coconut ash and bright orange sherbet as your base flavors. You'll want to skip the boring sprinkles and load up bowls with candy eyeballs, gummy worms, red strawberry "blood" syrup and marshmallow ghosts so guests can construct their own delicious, edible monsters.

15. Plan A Haunted Beach Day

Take the spooky festivities seaside by setting up a Summerween basecamp right on the sand. Swap out your standard beach towels for black or orange ones, and build sandcastles shaped like haunted fortresses, complete with seaweed for creepy accents and seashell monster teeth. As the sun sets, wrap up in cozy blankets and gather around a beach bonfire to tell classic ghost stories over the sound of crashing waves.

16. Decorate With Pastel Halloween Colors

If traditional black and orange feels too heavy for the summer sunshine, brighten things up with a "Pastel-Ween" color palette. What colors can you use? Try decorating your space with soft lavender, mint green, blush pink and pale peach, which look incredibly chic next to standard spooky motifs. Think pale pink Jack-O'-Lanterns, pastel purple spiderwebs and mint-colored ghosts that keep the vibe airy, playful, and Instagram-worthy.

17. Host A Summerween Craft Party

Gather your friends under a patio umbrella for an afternoon of laid-back, spooky crafting with a summer twist. Set up a large picnic table with supplies to paint mini terracotta pots with Jack-O'-Lantern faces for planting summer succulents or tie-dye shirts using neon green and orange patterns. It’s a relaxing way to chat, sip on iced drinks, and let everyone leave with a unique, handmade souvenir from the party.

18. Book A Paint And Sip Class

Take the party to a local studio or bring a private instructor to your backyard for a spooky-themed paint night. Sip on chilled rosé or tropical punch while a teacher guides your group through painting a summer sunset featuring a silhouette of a haunted mansion or a witch surfing a wave. It's a fantastic, low-stress way to celebrate the season while unlocking everyone's inner artist.

19. Try A Spooky Pottery Class

Get your hands dirty by booking a private group session at a local clay studio to mold some supernatural ceramics. Everyone can try spinning the pottery wheel or hand-building custom pieces like ghost-shaped tea light holders, skull-shaped planters or mugs etched with spiderwebs. After the pieces are fired and glazed, you’ll all have a functional, high-quality piece of Summerween decor to use year after year.

20. Host A Murder Mystery Pool Party

Murder mysteries are all about high-stakes drama. Combine it with poolside lounging as you host a structured murder mystery game where everyone plays a character. Don't just throw the murder mystery, really get into it by designating the setting as a glamorous tropical resort, White Lotus style, where a wealthy guest has met a grim, suspicious end. Guests can interrogate suspects while floating on rafts, swap clues over grilled burgers, and solve the crime, all while wearing their finest resort-wear and oversized sunglasses.

21. Create A Haunted Snack Board

Upgrade the classic charcuterie board into a sprawling grazing table packed with creepy-cute finger foods. Use your favorite Halloween food ideas as you spread prosciutto-wrapped pretzel sticks that look like severed fingers, brie cheese cut into the shape of a coffin and black grapes that look like eyeballs trailing across the board. Add a few bowls of guacamole with a tortilla chip "tombstone" rising out of the center to perfectly balance savory summer snacking with spooky visual flair.

22. Make Tropical Trick-Or-Treat Bags

Give the classic candy hunt a coastal makeover by crafting custom tropical trick-or-treat bags. Swap out standard plastic buckets for canvas tote bags or mini wicker baskets, and use stencils or fabric paint to decorate them with palm trees shaped like skeleton hands or pineapples sporting Jack-O'-Lantern grins. To top it off, fill your Halloween crafts with tropical candies, coconut-flavored treats, and neon glow sticks to combine summer fun with spooky traditions.

23. Build A Backyard Haunted House

You can transform a simple pop-up canopy tent or patio into a thrilling walk-through attraction that captures the spirit of a classic October haunt. Hanging tattered black cheesecloth and faux jungle vines from the roof creates an unsettling atmosphere, while strategically placed outdoor fans mimic an eerie, unnatural breeze. To give your guests a quick, memorable scare, hide an actor in a tropical monster mask behind the bushes next to a strobe light.

24. Plan A Scary Story Bonfire

Gathering around a roaring backyard fire pit is the ultimate way to spend a cool summer evening once the sun goes down. A fun tradition is to pass a single flashlight around the circle, prompting whoever holds it to share local urban legends or creepy campfire tales. To keep everyone happy and fed during the storytelling, you can serve up custom s'mores made with cookies-and-cream chocolate bars and ghost-shaped marshmallows.

25. Host A Spooky Trivia Night

Hosting a fast-paced Halloween trivia competition on the deck is an excellent way to challenge your friends' knowledge of all things eerie. You can divide the guest list into competing teams and quiz them on everything from 80s slasher films to the bizarre origins of real-world superstitions. Winners can walk away with fun prizes like monster-themed pool floats or custom Summerween trophies, ensuring the competitive energy stays high all night.

26. Throw A Vampire Garden Party

An elegant evening gathering set amidst lush summer greenery can easily channel sophisticated, gothic vibes. Your table setup will look striking under the twilight sky if you use deep red roses, black taper candles and dark lace runners. For the menu, rich delicacies like rare flank steak, caprese skewers with balsamic glaze, and blackberry sangria served in crystal goblets will provide a beautifully theatrical dining experience that Dracula himself would approve.

27. Make Summerween Party Invitations

Designing eye-catching invitations is crucial for setting the right tone and introducing the playful mashup of seasons. Digital or physical cards featuring bright sunset gradients, watercolor palm trees, and smiling watermelon Jack-O'-Lanterns work beautifully. By including a catchy headline like "You're Invited to a Hauntingly Hot Time," you can clearly communicate the theme and remind guests to pack their favorite spooky swimwear.

28. Plan A Kids’ Monster Splash Party

Little ghouls will stay entertained for hours with an afternoon of high-energy, water-centric games tailored just for them. The pool instantly becomes a playground when you toss in dozens of floating plastic eyeballs for a competitive scavenger hunt. After a lively water-balloon fight with balloons decorated with sharp-toothed monster faces, the kids can dry off with refreshing fruit cups cut into spooky shapes.

29. Host A Haunted Brunch

Starting your Summerween celebrations early in the day with an upscale midday feast is a wonderful surprise for guests. Crimson-red velvet waffles, "mummy" sausages wrapped in puff pastry, and a fully stocked Bloody Mary bar put a supernatural twist on morning favorites. The dining table will beautifully blend bright sunshine with cozy elegance when styled with fresh summer sunflowers and mini white pumpkins.

30. Create A Summerween Photo Booth

A dedicated photo backdrop ensures your guests can capture memories of their brilliant costumes in style. Try hanging tropical palm-leaf paper on an outdoor wall, then layering it with bright orange string lights and plastic skeletons wearing floral leis. When you provide a basket of props like witch hats, oversized neon sunglasses and inflatable sharks, all your guests will end up with Instagram-ready photos.

31. End With A Midnight Swim Or Lantern Walk

As the clock strikes midnight, concluding your unforgettable celebration with a special late-night activity brings the event to a perfect close. Toss dozens of waterproof, glowing LED pucks into the water to create a magical, luminescent environment for a midnight swim. Alternatively, a peaceful walk around the neighborhood with paper lanterns lit by flickering LED candles lets everyone wind down in a wonderfully atmospheric way.

Quick Summerween Food, Décor And Activity Ideas

Summerween Food Ideas

Summerween food ideas add a spooky twist to some of your summer favorites. Make these foods look like ghouls and monsters for all your Summerween themes. Here are a few options:

• Watermelon Jack-O’-Lanterns
• Mummy hot dogs
• Monster ice cream
• Ghost popsicles
• Spiderweb dip
• Halloween s’mores

Summerween Decoration Ideas

There are plenty of Halloween decoration ideas you can use in the summer:

• Skeletons in pool floats
• Ghost garlands
• Pastel pumpkins
• Orange string lights
• Beach ball jack-o’-lanterns
• Tropical flowers with black candles

Summerween Activity Ideas

Plan a few activities for guests to enjoy during the party. There are activities for every age group to have fun during Summerween:

• Outdoor horror movie night
• Costume contest
• Spooky trivia
• Pool games
• Craft station
• Scary stories

Summerween FAQ

Is Summerween A Real Thing?

Summerween is not an official holiday, but has become a cultural phenomenon that many celebrate. This unofficial holiday brings the fun and spookiness of Halloween during the summer.

Why Is June 22 Summerween?

Summerween is sometimes celebrated on June 22 because that is the date it was celebrated on the show Gravity Falls, where the term and holiday originated.

Is July 5 Summerween?

Since Summerween is not an official holiday, it can be celebrated on July 5. June 22 is the original date in the cartoon series where is originated, but many people throw their Summerween parties during June, July and August. 

What Do You Do At A Summerween Party?

At a Summerween party, you can swim and play pool games, watch summer horror movies and enjoy themed food from the grill.

Summerween works because it gives guests the best of both seasons: warm-weather fun with just enough spooky-season drama. Whether you keep it simple with jack-o’-melons and Halloween s’mores or go all out with costumes, crafts and a haunted pool party, it’s an easy way to make a summer gathering feel more memorable.