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Weather & Climate in Koumac, New Caledonia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Koumac has a warm climate with an average annual temperature of 75°F (24°C). Winters average 79°F in January while summers reach 69°F in July / relatively mild seasonal variation. The area gets 211 sunny days per year. Annual precipitation totals 69.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 3 feet.
Temperature
79°F Jan (26°C)
69°F Jul (21°C)
| Annual Average | 74.7°F |
| 38% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 211 days/yr |
Geography
| Elevation | 3 ft (1 m) |
| Area | 156.3 sq mi (404.8 km²) |
| Population Density | 20/sq mi |
| Coordinates | -20.5667°N, 164.2833°W |
| Timezone | Pacific/Noumea |
Precipitation & Snow
Air Quality
Earthquake History
7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.
| Oct 10, 1993 | 39 km WSW of Wala, New Caledonia | M5.3 | 129 km | 14 km |
| Feb 10, 1993 | 41 km WSW of Wala, New Caledonia | M4.9 | 126 km | 22 km |
| Nov 11, 1993 | 27 km SW of Wala, New Caledonia | M4.6 | 116 km | 32 km |
| Nov 12, 1993 | 31 km SW of Wala, New Caledonia | M4.5 | 121 km | 33 km |
| Jun 29, 2021 | 17 km ENE of Touho, New Caledonia | M4.5 | 120 km | 14 km |
| Mar 1, 2004 | 37 km SW of Wala, New Caledonia | M4.3 | 120 km | 20 km |
| May 14, 2017 | 53 km WSW of Poum, New Caledonia | M4.2 | 74 km | 14 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
30 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2021 | Niran | Category 4 | 127 mph | 105 km |
| 2020 | Gretel | Category 1 | 63 mph | 141 km |
| 2020 | Uesi | Category 1 | 81 mph | 155 km |
| 2019 | Oma | Category 1 | 81 mph | 214 km |
| 2018 | Hola | Category 2 | 81 mph | 292 km |
| 2017 | Donna | Category 3 | 115 mph | 254 km |
| 2017 | Cook | Category 2 | 98 mph | 155 km |
| 2015 | Ola | Category 2 | 92 mph | 212 km |
| 2013 | Sandra | Category 3 | 98 mph | 259 km |
| 2012 | Jasmine | Category 3 | 121 mph | 221 km |
| 2011 | Zelia | Category 2 | 92 mph | 282 km |
| 2006 | Jim | Category 1 | 92 mph | 218 km |
| 2003 | Erica | Category 4 | 132 mph | 59 km |
| 1999 | Frank | Category 2 | 92 mph | 32 km |
| 1997 | Drena | Category 3 | 98 mph | 48 km |
| 1996 | Beti | Category 3 | 104 mph | 83 km |
| 1994 | Theodore | Category 3 | — | 113 km |
| 1994 | Rewa | Category 2 | 86 mph | 162 km |
| 1993 | Polly | Category 2 | — | 282 km |
| 1992 | Fran | Category 4 | 115 mph | 104 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1942 | NEW CALEDONIA | Unknown | 3.0 m | — | 75 km |
| 1936 | NEW CALEDONIA | Unknown | 2.2 m | — | 75 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 11.3 in | Wettest |
| February | 80°F (27°C) | 9.5 in | Warmest |
| March | 79°F (26°C) | 11.3 in | |
| April | 77°F (25°C) | 5.4 in | |
| May | 74°F (23°C) | 4.2 in | |
| June | 71°F (22°C) | 4.4 in | |
| July | 69°F (21°C) | 3.9 in | Coldest |
| August | 69°F (21°C) | 2.8 in | |
| September | 71°F (22°C) | 2.1 in | Driest |
| October | 74°F (23°C) | 2.9 in | |
| November | 76°F (25°C) | 4.3 in | |
| December | 78°F (26°C) | 6.9 in |
Koumac has a seasonal temperature swing of 11°F / from 69°F in July to 80°F in February. Total annual precipitation is 69.0 inches, with January being the wettest month (11.3") and September the driest (2.1").