25+ Summer Science Activities for Kids

June 25, 2026

Summer has a way of making science feel a little more magical. Ice melts beneath warm hands, bubbles drift across the yard, and colors swirl through water as ordinary afternoons become unforgettable discoveries.

Some of the best summer science activities never feel like lessons. They feel like play. As children mix, pour, freeze, launch, paint, and experiment, they are making observations, asking questions, and learning through every discovery.

Inside you'll find our favorite summer science activities for kids, from sunshine-inspired STEM projects and cooling ice experiments to colorful reactions, backyard discoveries, and bubble activities that make the most of long summer days.

Whether you're planning a week of summer learning, searching for an easy afternoon activity, or simply looking for fresh ways to keep curious minds engaged while school is out, you'll find plenty of ideas to inspire your next adventure.

Children enjoying colorful summer science activities outdoors including ice experiments, bubbles, water play, sunshine STEM, and hands-on science exploration.

For even more opportunities to learn through play throughout the year, be sure to explore our Science Experiments for Kids collection. You'll also love our Play Recipes for Kids hub filled with homemade slime, sensory fillers, chalk recipes, paint recipes, doughs, and creative activities designed to inspire playful learning.


What You'll Find

Every season brings its own opportunities to explore science, but there is something especially exciting about summer.

Experiments move outdoors.

Ice melts a little faster, bubbles drift a little farther, and colorful reactions become even more captivating under the warm summer sun.

Inside this collection you'll discover:

  • Science powered by sunshine
  • Cool experiments for hot days
  • Colorful reactions and outdoor science
  • Messy backyard discoveries
  • Bubble science kids will want to repeat again and again


Sunshine Science

Warm weather creates opportunities for experiments that simply cannot happen indoors.

Whether kids are harnessing the sun's energy, watching ice transform, or creating with water outside, these activities invite them to observe what happens, try new ideas, and enjoy every surprising result.

Kids exploring sunshine science outdoors with solar experiments, melting ice, water play, and hands-on STEM activities.


Featured Activities

Solar Oven

Harness the power of the sun to build a simple solar oven, then watch sunlight melt chocolate and marshmallows into a delicious summer treat.


Ice Cream in a Bag

Science never tasted so good. Kids shake, mix, and watch simple ingredients transform into homemade ice cream while discovering how ice and salt work together to freeze a liquid.


Magic Water Painting

A paintbrush and a little water transform an ordinary sidewalk into a canvas filled with colorful surprises, making this one of the simplest and most memorable summer science activities.


Cool Science for Hot Days

Some of the best summer science activities help everyone cool off.

These icy experiments invite children to scoop, splash, and investigate while exploring melting, temperature, texture, and change through hands-on play.

Kids exploring cool summer science activities with colorful ice, melting experiments, frozen chalk, and sensory ice play.


Featured Activities

Octo Ice

Frozen tentacles, colorful ice, and imagination come together in a playful sensory activity that invites kids to scoop, explore, and watch the ice slowly transform.


Ice Chalk Experiment

Cool off with frozen sidewalk chalk that slowly melts across warm pavement, creating colorful designs while introducing children to changes in temperature and state.


Alphabet Ice

Alphabet-shaped ice cubes turn letter learning into a cool summer science activity as children splash, explore, and watch each colorful letter slowly melt away.


Fizz, Pop & Spectacle Science

Summer is the perfect season for science that surprises.

Bright colors spread through water.

Fizzing reactions bubble over.

Crackling sounds fill the air.

Some experiments happen in an instant, while others slowly transform before your eyes. Each one invites kids to pause, watch closely, and wonder what will happen next.

These activities combine colorful reactions, movement, sound, and a little bit of science magic to create unforgettable summer memories.

Kids exploring colorful summer science reactions including fireworks in a jar, glowing science, fizzing chalk, and sensory experiments outdoors.


Featured Activities

Fireworks in a Jar

Watch colorful droplets drift through oil and water before blooming into bright bursts that look just like fireworks beneath the surface.


Glowing Fireworks Experiment

Turn down the lights and watch glowing colors spread through the water as this already beautiful experiment comes alive under blacklight.


Firecracker Oobleck

Stretch, squeeze, and poke this fascinating non-Newtonian mixture while Pop Rocks add an unexpected crackle that children never forget.


Fizzy Sidewalk Art

Take colorful science outdoors as homemade sidewalk paint bubbles and fizzes across the pavement, turning an ordinary sidewalk into a place for colorful discoveries.


Fizzy Pop Chalk

A playful twist on sidewalk chalk that combines colorful painting with surprising fizzing reactions kids will want to create again and again.


Messy Backyard Science

Some of childhood's best memories are made outside, where there is room to splash, dig, experiment, and come home wonderfully messy.

Whether kids are digging through mud, mixing unusual materials, or creating colorful outdoor masterpieces, these activities celebrate the joy of experimenting, making a mess, and seeing where curiosity leads.

Kids enjoying messy backyard science activities including mud play, water balloon painting, and homemade quicksand.


Featured Activities

Mud Magic

Celebrate one of childhood's favorite materials with muddy experiments that invite kids to mix, splash, squish, and explore.


Water Balloon Paint War

Science, art, and active play collide as colorful water balloons burst into vibrant splashes across oversized outdoor canvases.


Homemade Quicksand

Mix up an unforgettable sensory material that flows, shifts, and surprises with every scoop, squeeze, and handful.


Summer Bubble Science

Few things capture the feeling of summer quite like bubbles floating through the backyard.

Whether kids are chasing giant bubbles across the grass or watching glowing bubbles shimmer after sunset, these simple activities have a way of turning an ordinary evening into something unforgettable.

Kids exploring giant bubbles, glowing bubbles, and outdoor bubble science activities.


Featured Activities

Super Bubbles

Mix up an easy homemade bubble solution, then head outside to create enormous bubbles that twist, stretch, and float across the yard.


Glowing Bubbles

As daylight fades, ordinary bubbles become glowing orbs that drift through the night, filling the backyard with floating light and wide-eyed excitement.


More Bubble Activities

Looking for even more bubble fun? Explore our complete Bubble Activities collection for giant bubbles, creative bubble recipes, and even more bubble-filled adventures.


Make This Summer One to Remember

When summer is over, children rarely remember the explanation. They remember the experience.

The bubble that floated higher than anyone expected. The fireworks that bloomed inside a jar. The muddy hands, colorful reactions, and the excitement of asking, "Can we do another one?"

Those are the moments that make summer unforgettable.

Whether you have ten minutes in the backyard or an entire afternoon to fill, these activities invite families to slow down, try something new, get a little messy, and make memories together.

Kids enjoying colorful summer science activities outdoors while experimenting, playing, and making memories together.


Keep Exploring

If today's activities sparked a new favorite, there is plenty more to discover.

Science Experiments for Kids

Explore hundreds of science activities, from baking soda reactions and weather experiments to glow activities, crystal growing, seasonal STEM, and much more.


Play Recipes for Kids

Discover homemade slime, sensory fillers, chalk recipes, paint recipes, doughs, and other creative materials that keep the fun going long after the experiments are finished.


Summer may only last a season, but the memories made while exploring together will surely last a lifetime.

One experiment leads to another. A new question is waiting to be explored. Before you know it, an ordinary afternoon has become one your family will remember for years to come.

We hope this collection helps fill your summer with laughter, colorful discoveries, and plenty of unforgettable moments together.

Pinterest pin featuring 25+ summer science activities for kids with melting rainbow ice, giant bubbles, colorful fizzing reactions, and easy outdoor STEM experiments

Save this collection to Pinterest so you'll always have a season full of summer science ideas ready whenever someone asks, "What can we do today?"

More About the Author

Crystal Underwood is the writer and creator of Growing A Jeweled Rose. She has worked extensively with children and strongly believes in the importance of play at the core of early learning. She is passionate about the early years and believes that childhood should be a truly magical time in life. For all the best kids activities connect with Growing a Jeweled Rose below!