What Happens to Possums During Sydney’s Colder Months?
As winter arrives in Sydney, many homeowners notice a sudden drop in possum activity — leading to the common question: do possums hibernate? Unlike some native mammals, possums don’t hibernate in the traditional sense, but their behaviour does change significantly with the seasons.
This article explores how possums respond to colder temperatures, what seasonal changes you should expect, and how their winter routines can still affect your home and garden.
Do Possums Hibernate Like Other Mammals?
No — possums do not hibernate. They remain active year-round, though their movement may decrease during colder or wetter nights. Unlike true hibernators, possums stay alert and mobile even in winter. However, their behaviour does shift with seasonal changes. Learn more in our guide on seasonal possum activity in Sydney.
What they experience is more accurately described as torpor — a short-term reduction in activity and metabolic rate to conserve energy, especially during chilly or rainy nights. However, possums will still wake daily to feed and move between shelter sites.
Learn more about seasonal changes in behaviour in our article on Seasonal Activity of Possums in Sydney.
How Possums Cope With Cold Weather
Possums have adapted well to Sydney’s mild winters. Night temperatures rarely drop low enough to be life-threatening, but possums still seek out warm, dry shelters during winter months.
Key strategies include:
- Nesting in roof spaces or wall cavities for warmth and shelter
- Using more insulation material like leaves, insulation, and cloth for bedding
- Reducing nightly foraging range to stay closer to nests
This increased need for warmth is a common reason why possums become more active in roofs during the winter season. Learn to recognise signs of this in our guide: Signs You Have a Brushtail Possum in Your Roof.
Are Possums Less Active in Winter?
Yes — but only slightly. During particularly cold or wet nights, possums may choose to remain in their nests. However, most Sydney possums will still leave their den at least briefly each night to forage, even during winter.
Possums that have access to easy food sources, like fruit trees or compost bins, are more likely to remain nearby and stay active. To understand what they’re looking for, see What Attracts Possums to Sydney Homes.
Winter Nesting Behaviour
Winter is a prime time for possums to seek enclosed, insulated shelter — which often leads them into roof cavities, sheds, and underdeck areas.
Common nesting behaviour in winter includes:
- Reinforcing nests (dreys) with extra material
- Using man-made objects (cloth, insulation, plastic bags)
- Staying longer in one nesting location to conserve heat
If you notice loud thumping or rustling in the ceiling, especially early in the evening or early morning, it may indicate an active nest overhead. For nest identification tips, visit How to Spot a Possum Nest (Drey).
Do Possums Breed in Winter?
Breeding typically slows during winter but doesn’t stop entirely. In Sydney, possums can breed year-round, with peaks in spring and summer. However, if food and shelter are plentiful, some females may still become pregnant during winter.
Female possums will become even more territorial while nesting with joeys, often returning to the same safe space — including roof cavities. For more, see Possum Mating and Breeding Habits.
How to Protect Your Home in Winter
Winter is a critical time to inspect your home for signs of possum entry. The colder it gets, the more likely they are to move indoors seeking shelter.
Prevention tips include:
- Sealing gaps in eaves, tiles, and fascia boards
- Trimming overhanging tree branches near the roof
- Securing chimneys, vents, and access points
- Removing food sources like fallen fruit and pet food
If you’re unsure about your home’s possum-proofing status, visit our Possum Proofing service page or book a full inspection.
Possum Sightings in Winter: What to Watch For
Even if you see fewer possums during winter, signs of their presence may still be clear:
- Fresh droppings around the house or garden
- Scratching or bumping sounds at night
- Strong musky odours in enclosed spaces
- Sightings on fences, trees, or roofs after dark
Want to confirm the presence of a possum? Our guide to Identifying Possum Droppings can help you distinguish between different pests.
Understanding Possum Resilience
Possums are incredibly well-adapted to urban life and changing seasons. Unlike animals that hibernate, their ability to function year-round — even during winter — allows them to maintain strong territories and consistent nesting habits.
To explore how well possums have adapted to city life, visit Urban Adaptation of Possums.
Need Winter Possum Removal?
Possums may not hibernate, but they’re still highly active in winter — often right above your head. If you’re noticing winter nesting behaviours or roof noises, our licensed team can help you remove and prevent possums legally and humanely.
Book your winter possum inspection now or call 0468 166 733 to get expert help across Sydney.
