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Nukunonu, Tokelau climate
Af Tropical rainforest
Nukunonu has a remarkably steady tropical climate (Tropical rainforest, Köppen Af). The hottest month is May with an average daily high near 29°C, while the coldest is August averaging around 28°C at night. Around 2268 mm of precipitation falls each year, peaking in January (290 mm) and easing off in September (125 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Nukunonu climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 29 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Precipitation (mm) | 290 | 279 | 219 | 155 | 156 | 138 | 137 | 127 | 125 | 166 | 190 | 286 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 28 | 28 | 29 | 29 | 29 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 28 | 28 | 28 | 28 | 28 | 28 |
| Precipitation (mm) | 290 | 279 | 219 | 155 | 156 | 138 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 28 | 28 | 29 | 29 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 28 | 28 | 28 | 28 | 28 | 28 |
| Precipitation (mm) | 137 | 127 | 125 | 166 | 190 | 286 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 81 | 74 | 63 | 62 | 59 | 59 | 59 | 60 | 67 | 72 | 79 |
| Relative humidity (%) | 80 | 81 | 81 | 81 | 80 | 79 | 79 | 79 | 79 | 79 | 79 | 80 |
| Wind speed (mph) | 10.7 | 10.7 | 9.6 | 8.9 | 9.4 | 11.7 | 12.3 | 12.2 | 11.9 | 9.7 | 9.2 | 10.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 81 | 74 | 63 | 62 | 59 |
| Relative humidity (%) | 80 | 81 | 81 | 81 | 80 | 79 |
| Wind speed (mph) | 10.7 | 10.7 | 9.6 | 8.9 | 9.4 | 11.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 59 | 60 | 67 | 72 | 79 |
| Relative humidity (%) | 79 | 79 | 79 | 79 | 79 | 80 |
| Wind speed (mph) | 12.3 | 12.2 | 11.9 | 9.7 | 9.2 | 10.0 |
Methodology & sources
Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.