Termite guide · Wollongong & the Illawarra
When Is the Best Time of Year for a Termite Inspection in NSW?
Book before the warm season, not during it: late winter to spring. Termite activity climbs through the warmer, wetter months, so an inspection ahead of summer catches problems while they are smaller.
Last updated 5 September 2026 · Premier Pest Control, Wollongong
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The short answer: before summer, not after something is noticed
Subterranean termites are active all year, but their activity climbs through the warmer, wetter months — colonies feed harder, build faster and send out winged swarmers on warm, humid evenings, mostly through spring and summer, with some species also flying in autumn. That seasonality is exactly why the best time to inspect is just ahead of it: an inspection in late winter or spring finds the conditions and early activity a summer of feeding would otherwise compound. Waiting until you notice something inverts the logic, because by the time termites produce a visible sign, they have usually been working for a long while.
What the calendar actually changes — and what it doesn't
A common worry is that a winter inspection is a wasted one. It isn't. The evidence an inspector reads — mud tubes, damaged timber, moisture problems, conducive conditions like garden beds against the wall line or a damp subfloor — is visible in any month, and a colony that was active in February has not packed up by July. What the seasons change is urgency and risk, not detectability:
- Spring — swarming season begins; winged termites on a warm evening mean an established colony nearby. The classic time to inspect ahead of the risk window
- Summer — peak feeding and swarming activity; still a fine time to inspect, just later in the risk window than ideal
- Autumn — activity eases; a good time for properties that missed spring, and for fixing the moisture problems summer exposed
- Winter — activity slows but does not stop, and subfloor damp (the thing that attracts them) is often at its most visible. Inspections work fine
The annual rhythm matters more than the perfect month
The Australian Standard for termite management, AS 3660, sets the framework the industry works to, and a competent inspection at least once a year is the general expectation for most homes — more often where a property borders bushland, has a history of termite activity, or has a persistently damp subfloor, which describes a lot of housing near the Illawarra escarpment. If choosing a month is the thing stopping you from booking at all, pick any month and keep the anniversary: a home inspected every August without fail is far better protected than one waiting for the perfect spring that never gets booked.
Times when waiting for the season is the wrong call
Seasonal timing is for routine inspections. Some situations should jump the queue whatever the month:
- 1
You have seen a sign
Mud tubes, hollow-sounding timber, blistered paint, piles of equal-length wings on a sill — do not wait for spring and do not disturb the area. Book the inspection now.
- 2
You are buying a property
A pre-purchase visual termite inspection runs to your contract deadline, not the calendar. Whatever month you exchange in is the month to inspect.
- 3
The property next door is being treated
Nearby activity does not mean your home is affected — colonies are a normal part of the landscape — but it is a sensible prompt to check rather than assume.
- 4
It has been more than a year
If you cannot remember your last inspection, that is the answer. Significant termite damage frequently builds before any visible sign appears.
Why the Illawarra's geography shortens the safe interval
Termites need timber, moisture and access, and this region supplies all three: the escarpment puts a great deal of housing hard against bushland, coastal humidity keeps subfloors damp well into the cooler months, and the older weatherboard and timber-framed stock through Wollongong and the surrounding suburbs offers exactly the conditions colonies look for. That is why annual inspection is the floor here rather than a conservative extra — and why bushland-fringe properties in the Macarthur corridor and the Southern Highlands are the ones we most often suggest inspect more frequently than yearly.
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Frequently Asked Questions
The questions we actually get asked on this — answered plainly. Call 02 4217 0117 any time if yours isn't here.
Call 02 4217 0117How often should a home in NSW have a termite inspection?
At least once a year is the general industry expectation for most homes, and more often for higher-risk properties — those bordering bushland, with previous termite activity, or with a damp or poorly ventilated subfloor. The interval matters more than the month.
Is winter a bad time for a termite inspection?
No. Termite activity slows in winter but does not stop, and the physical evidence — mud tubes, damaged timber, conducive moisture conditions — remains visible year-round. Winter is only the wrong time if it becomes a reason to put the inspection off until you notice something.
What months do termites swarm in NSW?
Winged termites typically swarm on warm, humid evenings — mostly through spring and summer, though some species also fly in autumn. A swarm near your home — or piles of shed, equal-length wings on window sills afterwards — is direct evidence of an established colony nearby, and worth an inspection whatever the calendar says.
Does rain or a wet season increase termite risk?
Moisture is one of the three things termites need, so wet periods that leave soil and subfloors damp make properties more attractive to them. After a notably wet season, it is worth checking that downpipes, taps and air-conditioning run-off are not keeping the soil beside the house permanently wet.
Can I book an inspection at short notice?
Yes — we offer same-day service where availability allows, and pre-purchase inspections are worked to your contract deadline. Call 02 4217 0117 and we will tell you honestly what is achievable for your address.
Sources
Every claim on this page can be checked against a public authority. These are the ones we used.
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Related: Termite inspections · Pre-purchase timber pest inspection · Termite treatment