Koumac weather by month & the best time to visit
🇳🇨 New Caledonia · beach resort · tropical — wet & dry seasons climate
The best time to visit Koumac is September — its sunniest month (Sunshine Score 89/100), with October and July close behind. Koumac averages about 2,687 hours of sunshine a year. Daytime highs around 25°C / 77°F and roughly 33 mm of rain in September.
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- Sun hours / year
- 2,687
- Sunniest month
- September
- Peak score
- 89/100
- Rain / year
- 1,084 mm
- Midday UV at peak
- 12 (extreme)
- Sea at warmest
- 31°C / 88°F
- Population
- 3k
- Elevation
- 11 m
When is the best time to visit Koumac?
For sunshine, the best time to visit Koumac is September, then October and July. The dullest month is February (67/100, 151 mm of rain). The full month-by-month picture is in the table below.
How sunny is Koumac?
Koumac gets a lot of sun: around 2,687 hours a year. September (89/100) is noticeably better than February (67). It ranks #11 of 11 destinations in New Caledonia for annual sunshine, below the national median of 2,762 hours. Rain has a clear season: the wettest stretch, around February, carries about 45% of the annual 1,084 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 70 | 29° / 84°F | 26° / 79°F | 133 mm | 12 | 31° / 88°F |
| February | 67 | 29° / 84°F | 26° / 79°F | 151 mm | 12 | 30° / 86°F |
| March | 67 | 29° / 84°F | 26° / 79°F | 201 mm | 10 | 30° / 86°F |
| April | 73 | 28° / 82°F | 25° / 77°F | 117 mm | 8 | 28° / 82°F |
| May | 78 | 26° / 79°F | 23° / 73°F | 91 mm | 6 | 25° / 77°F |
| June | 81 | 25° / 77°F | 22° / 72°F | 73 mm | 5 | 24° / 75°F |
| July | 86 | 24° / 75°F | 21° / 70°F | 47 mm | 6 | 23° / 73°F |
| August | 86 | 24° / 75°F | 20° / 68°F | 46 mm | 7 | 23° / 73°F |
| September | 89 | 25° / 77°F | 21° / 70°F | 33 mm | 9 | 24° / 75°F |
| October | 87 | 26° / 79°F | 22° / 72°F | 40 mm | 10 | 26° / 79°F |
| November | 84 | 27° / 81°F | 24° / 75°F | 59 mm | 11 | 28° / 82°F |
| December | 78 | 29° / 84°F | 25° / 77°F | 93 mm | 12 | 30° / 86°F |
Sea temperature in Koumac by month
The sea off Koumac is warmest in January at around 31°C / 88°F, and coolest in July at 23°C / 73°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Koumac on the interactive sunshine globe →
Nearby places for sunshine
- Nouméa (La Tontouta) New Caledonia · 260 km · best in Sep · 2,761 h sun/yr
- Nouméa New Caledonia · 298 km · best in Sep · 2,762 h sun/yr
- Port Vila Vanuatu · 531 km · best in Aug · 2,538 h sun/yr
- Luganville Vanuatu · 642 km · best in Aug · 2,396 h sun/yr
- Honiara Solomon Islands · 1,316 km · best in Sep · 2,179 h sun/yr
- Sunshine Coast Australia · 1,321 km · best in Jul · 2,956 h sun/yr
Nearest destinations
- Koné New Caledonia · 83 km · 3,126 h sun/yr · best in Sep
- Touho New Caledonia · 108 km · 2,729 h sun/yr · best in Sep
- Waala New Caledonia · 111 km · 2,888 h sun/yr · best in Sep
- Ouvéa New Caledonia · 241 km · 2,854 h sun/yr · best in Sep
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