What to Expect Year-Round
Have you noticed possum activity seems to increase during certain times of the year? Whether it’s thumping sounds in your roof, droppings around your garden, or possums appearing in your backyard, their behaviour changes with the seasons.
Understanding seasonal possum activity in Sydney can help you predict when they’re most likely to enter your home, breed, or become territorial. In this guide, we break down what you can expect from possums in each season — and how to stay one step ahead of an infestation.
What Influences Possum Behaviour Through the Year?
Possums respond to seasonal changes in temperature, daylight hours, food availability, and mating cycles. These natural triggers affect their nesting habits, movement, and the likelihood of entering residential properties.
Here’s a season-by-season breakdown of what Sydney homeowners can expect.
Summer (December – February)
Summer in Sydney is breeding season for many possum species, especially the Common Ringtail Possum. Warm nights and abundant food lead to increased foraging and social interaction.
- Increased noise and movement during the night
- Possums foraging in fruit trees, gardens, and compost bins
- Young joeys emerging from the pouch and exploring
- More vocalisations due to mating and territorial behaviour
Possums are often seen on fences, roofs, and driveways during this time. If your home has easy roof access, now is when they’re most likely to enter and nest.
Autumn (March – May)
As temperatures cool and the breeding season ends, possums begin to seek stable shelter for the colder months ahead. This is when many first take up residence in roof spaces.
Key signs of possum activity in autumn include:
- Possum droppings on decks or under eaves
- Noises in the roof as they search for shelter
- Possums using trees and fences as bridges to the roof
Learn how to spot possum droppings to confirm whether they’ve moved in.
Winter (June – August)
Winter is nesting season. Possums are less active outdoors but very present in warm spaces like roofs and sheds. If you’ve been hearing loud thumps or growls in your ceiling, it’s likely a Brushtail Possum making itself comfortable.
Common behaviours in winter include:
- Possums nesting in insulation or ceiling cavities
- Less outdoor activity but more roof noise
- Joeys riding on their mother’s back during early outings
- Stronger smells from scent marking and droppings
During this time, they’re especially difficult to remove without professional help. Check for signs of a Brushtail Possum in your roof before sealing any entry points.
Spring (September – November)
Spring is another breeding period for some possum species. With warmer weather, possums become more active and exploratory, often leading to roof invasions and increased contact with humans.
You might notice:
- New nesting attempts in sheds, garages, or roof spaces
- More baby possums appearing in gardens and parks
- Possum vocalisations at night (clicking, growling, screeching)
- Increased damage to fruit trees and ornamental plants
Spring is a good time to assess your home’s vulnerability. Visit our Possum Proofing page for prevention tips before breeding kicks off.
When Are Possums Most Likely to Enter Your Roof?
Roof invasions peak in late autumn and early winter as possums seek warm nesting sites. However, they may also enter during spring if a female is preparing to give birth. Signs of roof entry include:
- Thumping sounds at dusk and early morning
- Chewed or shifted roof tiles, gable vents, or eaves
- Accumulated droppings inside or near roof access points
- Claw marks or greasy tracks near walls and fences
Learn how to identify these signs in our guide to possum tracks and footprints.
How Seasonal Changes Impact Removal Timing
If a possum is nesting with young, it can only be removed after the joeys are independent — typically around 6–7 months of age. Attempting to remove a mother possum during breeding season may leave the young behind, which is both illegal and inhumane.
That’s why it’s critical to work with a licensed professional who can determine the right timing and method of removal.
What You Can Do Year-Round
Regardless of the season, you can reduce your risk of possum activity by:
- Trimming tree branches that overhang your roof
- Blocking roof entry points with mesh or sheet metal
- Removing food sources like pet bowls and compost
- Inspecting your roof for signs of entry every few months
If possums are already active, don’t attempt DIY removal — it’s illegal under NSW law. Learn more about legal requirements on our Possum Removal Laws page.
Book a Seasonal Possum Inspection
Not sure when possums are most active on your property? Our team offers seasonal inspections across Sydney to assess risks, confirm activity, and recommend prevention or removal options tailored to the time of year.
Book your free inspection today or call 0468 166 733 to speak with a local possum expert.
