Wollongong weather in September
September in Wollongong: nice, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Wollongong · #511 of 897 destinations to visit in September · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Wollongong in September
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Wollongong climate normals — September
| Daytime high | 19°C / 66°F | 😎 nice |
|---|---|---|
| Nighttime low | 13°C / 56°F | |
| Rainfall | 56 mm / 2.2 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 70% | 💧 humid |
| Dew point | 10°C / 50°F | |
| Sunshine | 10 h/day | |
| Daylight | 11.9 h | |
| Wind | 22 km/h / 14 mph | |
| Air quality (US AQI) | 34 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Wollongong in September — FAQ
- Is September a good time to visit Wollongong?
- September in Wollongong: nice, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Wollongong on SeasonMap's comfort score (81/100).
- What is the weather like in Wollongong in September?
- In September, Wollongong averages a daily high of 19.1°C and a low of 13.1°C, with about 56 mm of rain over roughly 9 rainy days.
- What is the air quality in Wollongong in September?
- Wollongong has a mean US Air Quality Index of about 34 in September.