Dunedin weather in September
September in Dunedin: cold, a little rain, with clean air — a great time to visit.
#8 of 12 months in Dunedin · #332 of 604 destinations to visit in September · comfort 78/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Dunedin climate normals — September
| Daytime high | 13°C / 55°F | 🧥 cold |
|---|---|---|
| Nighttime low | 5°C / 41°F | |
| Feels like (high) | 9°C / 48°F | |
| Rainfall | 48 mm / 1.9 in | 🌦 some rain |
| Rainy days | 12 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 5°C / 40°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 11.8 h | |
| Wind | 24 km/h / 15 mph | |
| Snowfall | 0.3 cm / 0.1 in | |
| Air quality (US AQI) | 25 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Dunedin in September — FAQ
- Is September a good time to visit Dunedin?
- September in Dunedin: cold, a little rain, with clean air — a great time to visit. It ranks #8 of 12 months for Dunedin on SeasonMap's comfort score (78/100).
- What is the weather like in Dunedin in September?
- In September, Dunedin averages a daily high of 12.5°C and a low of 4.8°C, with about 48.4 mm of rain over roughly 11.6 rainy days.
- What is the air quality in Dunedin in September?
- Dunedin has a mean US Air Quality Index of about 25 in September.