Ever watched squirrels darting around your yard and wondered how much they actually sleep? Most squirrel species nap in short bursts that total about 12–14 hours each day, but this can shift depending on the season, species, or even the weather.
Let’s get into where these little acrobats curl up, how naps fit into their busy lives, and why cold weather makes some of them snooze a bit more. Maybe you’ll finally piece together why your backyard squirrels seem so energetic—and then suddenly disappear for hours.
How Much Do Squirrels Sleep?
Adult squirrels nap for many hours each day, but sleep time varies by species, age, and weather. Here’s a quick overview: you’ll see how tree, ground, and flying squirrels differ, how rain or winter shifts their sleep, and why baby squirrels seem to snooze endlessly.
Average Daily Sleep Duration
Most adult tree and flying squirrels sleep about 12–15 hours in a 24-hour stretch. You’ll spot them lounging during the hottest part of the day and catching long rests at night or between food runs.
Some studies say mature squirrels rack up close to 14 hours of sleep, squeezing in naps between foraging. Ground squirrels can be a different story, though.
Some ground squirrels hibernate, so their sleep patterns look nothing like their tree-dwelling cousins. Non-hibernating ground species usually follow the 12–15 hour routine, but hibernators spend months in torpor and barely sleep in the usual sense during that time.
Things like food shortages, predators, and body size all play a role. When food gets scarce, squirrels rest more to save energy. If predators are lurking, squirrels sleep less and stay on alert.
Sleep Differences Among Squirrel Species
Tree squirrels curl up in dreys or tree hollows and stick to diurnal or crepuscular routines. Gray squirrels and similar types rest during the day’s heat and at night, so they usually get about 12–15 hours of downtime.
Flying squirrels, on the other hand, are nocturnal and sleep through most of the daylight in tree cavities. In winter, they often bunk together in communal nests, which helps them stay warm and maybe even sleep longer.
Ground squirrels like the California ground squirrel are mostly diurnal, but some go into deep hibernation. During those long winter torpor cycles, they barely wake up for months.
Seasonal and Weather Impacts on Sleep
Cold snaps make squirrels hunker down and move less. Tree and flying squirrels don’t truly hibernate, but they’ll enter torpor and stay holed up in dreys or tree hollows for days if temperatures dip below 50°F.
You’ll only see them venture out on warmer days to grab food. Ground squirrels, though, can hibernate for months at a time.
During hibernation, their body temperature and metabolism drop, and their usual sleep routines vanish into one long dormant stretch. How long they hibernate depends on the local climate and what food they’ve stored.
Rainy days keep squirrels inside their nests or burrows. Tree squirrels curl up in dreys and sometimes use their tails as makeshift umbrellas, while flying squirrels hide out in tree cavities. Ground squirrels just stay put in their burrows to avoid the wet and cold.
Baby Squirrels and Their Sleeping Needs
Baby squirrels—kits—sleep way more than adults. Newborns can snooze up to 20–22 hours a day while they’re feeding and growing.
You’ll find them bundled in nests, whether that’s a drey, tree cavity, or underground spot, with parents keeping them warm. Where they sleep depends on the species.
Tree squirrel kits stay in dreys or tree hollows, flying squirrel young snuggle in tree cavities lined with soft stuff, and ground squirrel pups hang out in underground nest chambers.
At first, young squirrels wake up often to nurse, but as they grow, they settle into longer sleep stretches. Good nest insulation and attentive parents help them gain weight and develop healthy sleep patterns.
Where and How Do Squirrels Sleep?
Squirrels choose safe, sheltered spots high in trees or inside hollow trunks. They rely on nests, holes, and burrows to keep dry, warm, and out of reach from predators.
Dreys and Tree Cavities as Sleeping Sites
Dreys are those round nests you’ll notice wedged in forked branches or near the trunk. Squirrels weave them from twigs, leaves, and moss, then line them with softer stuff like shredded bark or fur.
The drey’s outer layer blocks wind and light rain, while the inside traps heat. Tree cavities give even better protection than dreys.
When they find a hollow, squirrels pick it because it shields them from heavy rain and cold. Flying squirrels especially love cavities and often share them with family.
Sometimes, squirrels use dreys under eaves or even unfinished attics if natural spots are hard to find.
- Dreys: light, quick to rebuild, easy to spot in the trees
- Cavities: dry, insulated, often used year after year
- Attic or eaves: a backup when trees don’t have safe hollows
Sleeping Habits During Rain and Cold
When it’s raining, squirrels usually stay tucked inside their dreys or cavities. You’ll hardly ever spot them out in a downpour.
If they get caught outside, they might use their bushy tails as little umbrellas to cover their heads and backs. Cold weather makes squirrels slow down and save energy.
Tree squirrels enter short bouts of torpor and stay curled up in their nests longer. Ground squirrels can go into deep hibernation in their burrows for months.
Flying squirrels often huddle together in tree cavities to share body heat on freezing nights.
- Rain: stay inside nests, avoid getting wet
- Cold: torpor for tree and flying squirrels; hibernation for many ground squirrels
- Grouping: communal nesting helps keep everyone warm
Nighttime Rest and Activity Patterns
Most tree and ground squirrels stick to the daylight hours. You’ll usually catch them darting around at dawn or dusk.
At night, they curl up inside dreys or burrows to sleep. Flying squirrels, though, are a different story. They’re nocturnal, so they snooze during the day in dark cavities, then come alive after sunset.
If you spot a squirrel staying perfectly still in a nest or tucked into a hollow, that’s pretty much their resting mode. Tree squirrels spend their nights sheltered and curled up, while flying squirrels nap during daylight hours in tight, shaded spots—sometimes packed together for a bit of extra safety.
