Thredbo weather in September
September in Thredbo: cold, rainy, with clean air — a good time to visit.
#4 of 12 months in Thredbo · #454 of 604 destinations to visit in September · comfort 67/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Thredbo climate normals — September
| Daytime high | 11°C / 52°F | 🧥 cold |
|---|---|---|
| Nighttime low | 2°C / 35°F | |
| Feels like (high) | 9°C / 48°F | |
| Rainfall | 102 mm / 4 in | 🌧 rainy |
| Rainy days | 13 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 2°C / 36°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 11.9 h | |
| Wind | 12 km/h / 8 mph | |
| Snowfall | 9.3 cm / 3.7 in | |
| Air quality (US AQI) | 26 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Thredbo in September — FAQ
- Is September a good time to visit Thredbo?
- September in Thredbo: cold, rainy, with clean air — a good time to visit. It ranks #4 of 12 months for Thredbo on SeasonMap's comfort score (67/100).
- What is the weather like in Thredbo in September?
- In September, Thredbo averages a daily high of 11.2°C and a low of 1.8°C, with about 101.6 mm of rain over roughly 12.6 rainy days.
- What is the air quality in Thredbo in September?
- Thredbo has a mean US Air Quality Index of about 26 in September.
- Does it snow in Thredbo in September?
- Thredbo sees roughly 9.3 cm of snowfall in September.