13/10/2026
Termite Swarming Season in Brisbane
Termites in Brisbane begin swarming (migrating) when environmental conditions trigger their reproductive cycle. This usually happens in spring, especially September to November, when temperatures rise and humidity increases.
What swarming means
• Termite colonies produce alates (winged termites) once the colony is mature.
• These alates leave the nest during warm, humid evenings to start new colonies.
• Swarming is a natural part of termite reproduction, not a sign of seasonal die‑off.
Typical triggers
• Warm weather (soil temperatures around 20–35°C)
• High humidity
• Rainfall followed by heat
• A colony reaching reproductive maturity
What people may see
• Flying termites around lights at night
• Small piles of discarded wings
• Increased termite activity around gardens, fences, and timber structures
Why it happens in spring
Spring provides the ideal combination of moisture and temperature, allowing alates to survive long enough to mate and establish new nests. In Brisbane’s climate, this pattern repeats every year.
A Simple Guide for Homeowners
What homeowners might see
• Flying termites gathering around outdoor lights
• Small piles of clear wings on the ground or windowsills
• Termites emerging from soil, tree stumps, or cracks in timber
• Short bursts of activity that stop quickly
Why termites swarm
• The colony has reached maturity
• Weather conditions are warm, humid, and calm
• Rainfall has recently increased moisture in the environment
• Spring temperatures help alates survive long enough to mate
What to do if you see a swarm
• Keep calm — swarming is a normal part of termite behaviour
• Turn off outdoor lights to reduce attraction
• Close windows and doors to prevent alates entering
• Take photos of wings or swarm locations for reference
• Avoid spraying or disturbing the area, as it can hide useful signs
• Check for moisture sources or timber in contact with soil
What a swarm means for your home
• A mature colony is nearby
• Swarming does not always mean termites are inside the home
• It does indicate conditions are suitable for new colonies to form
• It’s a good time to stay observant for any changes around timber or moisture areas