Apia, Samoa climate
Af Tropical rainforest
Apia has a remarkably steady tropical climate (Tropical rainforest, Köppen Af). The hottest month is April with an average daily high near 31°C, while the coldest is August averaging around 23°C at night. Around 2534 mm of precipitation falls each year, peaking in January (354 mm) and easing off in August (104 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)Apia climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 25 | 25 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 24 |
| Precipitation (mm) | 354 | 344 | 198 | 213 | 246 | 130 | 116 | 104 | 111 | 144 | 253 | 321 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 31 | 31 | 31 | 30 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 27 | 27 |
| Avg low (°C) | 25 | 25 | 24 | 24 | 24 | 24 |
| Precipitation (mm) | 354 | 344 | 198 | 213 | 246 | 130 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 30 | 30 | 30 | 30 |
| Avg temp (°C) | 27 | 26 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 23 | 23 | 23 | 24 | 24 | 24 |
| Precipitation (mm) | 116 | 104 | 111 | 144 | 253 | 321 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 78 | 73 | 66 | 64 | 61 | 59 | 58 | 58 | 67 | 72 | 78 |
| Relative humidity (%) | 82 | 82 | 82 | 81 | 81 | 81 | 80 | 79 | 79 | 80 | 81 | 81 |
| Wind speed (km/h) | 14.5 | 14.7 | 13.1 | 13.8 | 15.9 | 19.1 | 19.3 | 19.2 | 19.4 | 17.4 | 15.2 | 14.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 78 | 73 | 66 | 64 | 61 |
| Relative humidity (%) | 82 | 82 | 82 | 81 | 81 | 81 |
| Wind speed (km/h) | 14.5 | 14.7 | 13.1 | 13.8 | 15.9 | 19.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 58 | 58 | 67 | 72 | 78 |
| Relative humidity (%) | 80 | 79 | 79 | 80 | 81 | 81 |
| Wind speed (km/h) | 19.3 | 19.2 | 19.4 | 17.4 | 15.2 | 14.8 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 21 years of daily observations at Apia/upolu Island, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.
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.