New Caledonia
Nouméa in September: weather, sea & travel advice
This month's data profile
Strong month under the current formula
Nouméa in September is climatically well suited to city breaks, active holidays and hiking, family holidays and beach holidays. The average daily high is around 22 °C, and the sea is about 23 °C. With about 8 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
85/100 · #3
Warmth
#10
Dryness
#2
Sun
#6
Sea warmth
#11
Published best categories: Overall, City break, Active, Family
Nouméa · SeptemberPhoto: Miles Goodhew · CC BY 2.0Climate facts
- Average high
- 22 °C
- Average low
- 21 °C
- Sea
- 23 °C
- Rainy days (est.)
- 8 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 75 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 22 | 20 | 9 | 62 | 5.4 | 74 | 5.1 | 22 | 81 |
| September (selected) | 22 | 21 | 8 | 44 | 6.9 | 75 | 5.0 | 23 | 85 |
| October | 23 | 22 | 8 | 43 | 8.0 | 76 | 5.2 | 23 | 88 |
How do the previous and next months compare?
Baseline: September (85/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | -4 | -0.7 °C | -0.5 °C | +0.9 | +17.5 mm | -1.5 h | -0.8 % | +0.1 m/s | -0.2 °C |
| October | +3 | +1.1 °C | +1 °C | -0.6 | -1.3 mm | +1.1 h | +1.3 % | +0.2 m/s | +0.8 °C |
All twelve months in context
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Frequently asked questions
How warm is Nouméa in September?
The average daily high is around 22 °C, with an average daily low of about 21 °C.
Can you swim in Nouméa in September?
The sea is about 23 °C (swimmable).
Does it rain a lot in Nouméa in September?
The curated estimate is about 8 rainy days per month, not a directly measured long-term average. Total precipitation averages around 44 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Nouméa?
By the climate score, August, September, October and November are the strongest months for Nouméa. For a beach trip: January, October, November and December. September is one of them.