Nouméa weather in September
September in Nouméa: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Nouméa · #229 of 604 destinations to visit in September · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Nouméa climate normals — September
| Daytime high | 23°C / 74°F | 🌤 warm |
|---|---|---|
| Nighttime low | 19°C / 66°F | |
| Feels like (high) | 24°C / 75°F | |
| Rainfall | 63 mm / 2.5 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 12 h | |
| Wind | 22 km/h / 14 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Nouméa?
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Nouméa in September — FAQ
- Is September a good time to visit Nouméa?
- September in Nouméa: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Nouméa on SeasonMap's comfort score (84/100).
- What is the weather like in Nouméa in September?
- In September, Nouméa averages a daily high of 23.4°C and a low of 18.7°C, with about 63.4 mm of rain over roughly 8.4 rainy days.
- What is the air quality in Nouméa in September?
- Nouméa has a mean US Air Quality Index of about 38 in September.