Weather forecast for 10 daysKoumac, New Caledonia

Weather forecast for the weekend

Saturday 24. Oct 2026

  • 27°C
  • 18°C
Cloudy
Cloudy
  • Precip. probability: 12%
  • Precipitation: 0mm
  • Wind: 18km/hSE 145°
  • Humidity: 62%
  • UV index: 8
  • Sunrise: 05:25 +11
  • Sunset: 18:08 +11
  • ▼
On Saturday, in Koumac, the day will be cloud-filled.
Temperature fluctuations between a moderately hot 27°C and a breezy 18°C are predicted.
The maximum heat index, which modifies the air temperature to account for humidity, is evaluated at 28°C.
The maximum temperature for today is forecasted to match the regular October high of 25°C.
Sunrise was at 05:25 and sunset will be at 18:08; the daylight will last for 12h and 43min.

Sunday 25. Oct 2026

  • 29°C
  • 19°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0mm
  • Wind: 17km/hS 170°
  • Humidity: 63%
  • UV index: 11
  • Sunrise: 05:24 +11
  • Sunset: 18:09 +11
  • ▼
On Sunday, 25th of October, gloomy and cloudy conditions will set the tone.
The temperature is predicted to vary between a temperate 29°C and a comfortable 19°C.
The maximum heat index, which modifies the air temperature to account for humidity, is evaluated at a humid 32°C. Note that heat index values are valued for light wind and location in the shade.
Tomorrow's maximum temperature is forecasted to be a couple of degrees higher than the common October peak of 25°C.
Sunrise will be at 05:24 and sunset at 18:09; tomorrow's daylight will last for 12h and 44min.

10-day overview

Daily temperatures

Maximum temperature: 29°C.
Coldest day: today 27°C.

Chance of precipitation

Highest chance: Monday 02.11. 37%.

Long-term weather forecast

  • Saturday
  • 24. Oct 2026
  • 27°C
  • 18°C
Cloudy
Cloudy
  • Precip. probability: 12%
  • Precipitation: 0mm
  • Wind: 18km/hSE 145°
  • Humidity: 62%
  • UV index: 8
  • Sunrise: 05:25 +11
  • Sunset: 18:08 +11
  • ▼
  • Sunday
  • 25. Oct 2026
  • 29°C
  • 19°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0mm
  • Wind: 17km/hS 170°
  • Humidity: 63%
  • UV index: 11
  • Sunrise: 05:24 +11
  • Sunset: 18:09 +11
  • ▼
  • Monday
  • 26. Oct 2026
  • 29°C
  • 20°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 15km/hS 189°
  • Humidity: 67%
  • UV index: 11
  • Sunrise: 05:24 +11
  • Sunset: 18:09 +11
  • ▼
  • Tuesday
  • 27. Oct 2026
  • 29°C
  • 19°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0mm
  • Wind: 14km/hSW 224°
  • Humidity: 68%
  • UV index: 11
  • Sunrise: 05:23 +11
  • Sunset: 18:09 +11
  • ▼
  • Wednesday
  • 28. Oct 2026
  • 29°C
  • 20°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 17km/hWSW 256°
  • Humidity: 65%
  • UV index: 11
  • Sunrise: 05:23 +11
  • Sunset: 18:10 +11
  • ▼
  • Thursday
  • 29. Oct 2026
  • 29°C
  • 20°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 20km/hSW 233°
  • Humidity: 66%
  • UV index: 11
  • Sunrise: 05:22 +11
  • Sunset: 18:10 +11
  • ▼
  • Friday
  • 30. Oct 2026
  • 28°C
  • 19°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 25km/hS 178°
  • Humidity: 64%
  • UV index: 11
  • Sunrise: 05:21 +11
  • Sunset: 18:11 +11
  • ▼
  • Saturday
  • 31. Oct 2026
  • 28°C
  • 20°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0mm
  • Wind: 20km/hS 173°
  • Humidity: 63%
  • UV index: 11
  • Sunrise: 05:21 +11
  • Sunset: 18:11 +11
  • ▼
  • Sunday
  • 1. Nov 2026
  • 28°C
  • 20°C
Few Showers
Few Showers
  • Precip. probability: 35%
  • Precipitation: 2mm
  • Wind: 18km/hSSE 167°
  • Humidity: 65%
  • UV index: 11
  • Sunrise: 05:20 +11
  • Sunset: 18:12 +11
  • ▼
  • Monday
  • 2. Nov 2026
  • 29°C
  • 20°C
Showers
Showers
  • Precip. probability: 37%
  • Precipitation: 3mm
  • Wind: 17km/hS 177°
  • Humidity: 66%
  • UV index: 11
  • Sunrise: 05:20 +11
  • Sunset: 18:12 +11
  • ▼
For the next ten days, a combination of dull, mostly clear and damp weather is predicted.
Rainfall is forecasted for next Sunday and Monday.
The maximum temperature will be very similar in the coming days. Highs will range from 27°C to 29°C, while the lowest nightly temperature differences will be also negligible, as the minimum temperature is expected to range between 18°C and 20°C.
The hottest days in Koumac will be Sunday through Thursday and next Monday, with a maximum of 29°C; today is the coldest day, with a maximum temperature of 27°C.
Updated: Oct 24, 2026 @ 00:30:39 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, in Koumac, gray skies will dominate the forecast.

Today, the maximum temperature will be 27°C, while the minimum temperature will be 18°C. The maximum heat index, which combines relative humidity and air temperature, is appraised at 28°C.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature will be a few degrees lower than the average low of 21.3°C.

On Saturday, in Koumac, sunrise was at 05:25 and sunset will be at 18:08 (+11).

In Koumac, the length of the day today will be 12h and 43min.

On Sunday, gloomy and cloudy conditions will set the tone.

Tomorrow, the maximum temperature will be 29°C, while the minimum temperature will be 19°C. The maximum heat index, which factors the actual air temperature with the relative humidity, is calculated to be 32°C.
Tomorrow, the highest temperature will be slightly warmer than the average maximum temperature in October. The lowest temperature will be also moderately lower than the average low of 21.3°C.

On Sunday, in Koumac, sunrise will be at 05:24 and sunset at 18:09 (+11).

In Koumac, New Caledonia, the length of the day tomorrow will be 12h and 44min.