Nouméa weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: May – November
What is the weather like in Nouméa in September?
In September, Nouméa is warm: daytime highs average 24 °C, and nights cool down to about 18 °C. The sea averages 22.7 °C – refreshing for a swim. Expect around 6 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 101 mm in total. All in all, September is a good month for a holiday in Nouméa.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 72 | 74 | 68 |
| Day | 22° | 24° | 25° |
| Night | 17° | 18° | 19° |
| Sea | 23° | 23° | 23° |
| Sun | 5 h | 6 h | 7 h |
| Rain days | 12 | 12 | 16 |
More details for September
- Daylight
- 11 h 56 min05:51 – 17:48
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 5 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 55 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+11Pacific/Noumea
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %55 %
- Few rainy daysweight 30 %44 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Rain jacket or umbrella
Nouméa in September: quick answers
Is Nouméa hot in September?
Warm rather than hot: in September, daytime highs in Nouméa average 24 °C and nights cool to about 18 °C.
Can you swim in Nouméa in September?
Yes. In September the sea averages 22.7 °C – refreshing for a swim.
Does it rain much in Nouméa in September?
Rain is frequent, with about 12 rainy days and 101 mm in total.
Nouméa month by month
The whole year in NouméaAll destinations: New CaledoniaWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences