World Sleep Day, celebrated on March 13, is a perfect invitation to slow down, snuggle up, and talk with children about one of the most important (and often most elusive) parts of their day: sleep. Picture books are uniquely suited to this conversation, offering gentle reassurance, playful humor, and big ideas wrapped in cozy illustrations. Whether exploring what happens in the world after bedtime, counting restless sheep, or wondering why sleep matters at all, the books highlighted here open the door to meaningful bedtime conversations. Together, they celebrate sleep as a universal experience—sometimes tricky, often magical, and always worth talking about.
While You Sleep, written by Jennifer Maruno, illustrated by Miki Sato, and published by Pajama Press, is a sweet story about a young girl tucked into bed with her stuffed bunnies. Rhyming couplets showcase all the chores they will accomplish while she sleeps including polishing the sun, dusting the butterflies, and charging the rainbows. The collage art illustrations are captivating and will encourage young children to explore every inch before drifting off to sleep and dream of all the chores their own friends will do. Perfect for kids ages 2-5.
Published by Floris Books, Sleep Here, Wake There is written and illustrated by Caio Zero. Inspired by his own childhood, Caio tells the story of César who falls asleep every night in his own bed but wakes up each morning in a bed at his aunty’s house. Determined to solve the mystery, he explores multiple possibilities such as sleepwalking, magical portals, or even aliens! However, it turns out that there is a simple answer after all: “Even though there was a simple answer to my big mystery, it still felt magical to me.” Geared for children ages 3-6.
A Sleepless Night, written by Micaela Chirif, illustrated by Joaquin Camp, translated from Spanish by Jordan Landsman, and published by Transit Children’s Editions, offers a humorous take on a baby’s troubles going to sleep. Not only does the baby keep up her parents and sibling, but she also keeps up the entire apartment building with her wails. Luckily Grandma arrives the next morning with the perfect solution and moves Elisa’s legs “as if she were riding a bicycle in the air” until Elisa releases all her gas in a humongous fart and everyone finally gets some sleep. Aimed for kids ages 4-7.
Available in both English translated by Cecilia Ross as Sheep Number 19 and in Spanish as La oveja 19, written by Blanca Lacasa, illustrated by Jorge Martin, and published by NubeOcho, shares the story of a disgruntled sheep who never gets to be counted because Mrs. Ophelia always falls asleep before she gets to number 19, Ramona. Bored, she tries a series of clever ploys to join the line-up, and when those fail, she finally talks to the other sheep. Together they find a solution: the flock mixes things up so everyone gets a turn. Mrs. Ophelia drifts off to sleep as easily as ever, and they all live happily ever after. This is a clever take on an old standard perfect for readers ages 5-8.
For those kids with big questions, Why Do We Sleep? written by Cathy Evans, illustrated by Polya Plavinskaia, and published by Cicada Books, delivers thoughtful, accessible answers. This nonfiction picture book explains the science and purpose of sleep in a way that’s engaging and age-relevant, helping young readers understand how rest supports learning, growth, and overall well-being. Each spread explores a different question, with answers presented in bite-sized pieces through captions, short text blocks, and speech bubbles. This engaging format makes the book easy for young readers to navigate, whether they’re reading cover to cover or dipping in at random. Plavinskaia’s mixed-media illustrations are a standout feature—bright, richly detailed, and thoughtfully designed to illuminate and expand on the text. Readers will also enjoy hunting for the 55 hidden sheep scattered throughout the pages. Altogether, this book is a guaranteed hit for young nonfiction lovers ages 6-9, especially those curious about science or the human body.
Sleep looks different for every child—and every night—but stories can help make sense of it all. From curious questions to quiet observations and reassuring rhythms, these picture books offer comfort, understanding, and a shared language for talking about rest. Reading them together on World Sleep Day (or any day’s bedtime) reinforces the idea that sleep isn’t just something we have to do—it’s something that connects us, restores us, and helps us wake up ready for a brand-new day. Whether a child drifts off easily or wrestles with sleepless nights, there’s a story here to meet them exactly where they are.