Climate averages 1991–2020
Nouméa weather
in September.
A warm, moderately wet month: the 9th warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Nouméa: daytime highs average 23.0°C and nights cool to about 17.5°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 48 mm of rain on roughly 7 days, which makes September a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average September day.
The nearest other city in this atlas is Port-Vila (541 km away). In September its highs average 24.8°C, 1.7°C warmer than Nouméa, with 73 mm of rain.
From September to October, average highs rise by 1.5°C to 24.5°C, and monthly rainfall falls from 48 mm to 38 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Nouméa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.7°C22.8°C | 22.8°C | 139 | 15.1 | 13.313 h |
| February | 28.1°C23.4°C | 23.4°C | 143 | 16.5 | 12.813 h |
| March | 27.1°C23.0°C | 23.0°C | 188 | 18.9 | 12.212 h |
| April | 25.6°C21.7°C | 21.7°C | 123 | 15.3 | 11.612 h |
| May | 23.9°C19.9°C | 19.9°C | 99 | 11.4 | 11.111 h |
| June | 22.5°C18.6°C | 18.6°C | 78 | 9.6 | 10.811 h |
| July | 21.6°C17.4°C | 17.4°C | 64 | 8.2 | 10.911 h |
| August | 21.6°C17.0°C | 17.0°C | 66 | 8.0 | 11.311 h |
| September, selected | 23.0°C17.5°C | 17.5°C | 48 | 6.8 | 11.912 h |
| October | 24.5°C19.0°C | 19.0°C | 38 | 7.4 | 12.613 h |
| November | 26.0°C20.3°C | 20.3°C | 65 | 8.5 | 13.213 h |
| December | 27.3°C21.8°C | 21.8°C | 88 | 12.0 | 13.513 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Nouméa) is explained once on the Nouméa year overview and on the Sources, method and limits page.