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 88°F, while the coldest is August averaging around 74°F at night. Around 100 inches of precipitation falls each year, peaking in January (13.9 inches) and easing off in August (4.1 inches).
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 (°F) | 87 | 87 | 87 | 88 | 87 | 86 | 86 | 86 | 86 | 86 | 87 | 87 |
| Avg temp (°F) | 82 | 82 | 82 | 82 | 81 | 80 | 80 | 80 | 80 | 81 | 81 | 81 |
| Avg low (°F) | 76 | 76 | 76 | 76 | 75 | 74 | 74 | 74 | 74 | 75 | 76 | 76 |
| Precipitation (in) | 13.9 | 13.5 | 7.8 | 8.4 | 9.7 | 5.1 | 4.6 | 4.1 | 4.4 | 5.7 | 10.0 | 12.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 87 | 87 | 88 | 87 | 86 |
| Avg temp (°F) | 82 | 82 | 82 | 82 | 81 | 80 |
| Avg low (°F) | 76 | 76 | 76 | 76 | 75 | 74 |
| Precipitation (in) | 13.9 | 13.5 | 7.8 | 8.4 | 9.7 | 5.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 86 | 86 | 86 | 87 | 87 |
| Avg temp (°F) | 80 | 80 | 80 | 81 | 81 | 81 |
| Avg low (°F) | 74 | 74 | 74 | 75 | 76 | 76 |
| Precipitation (in) | 4.6 | 4.1 | 4.4 | 5.7 | 10.0 | 12.6 |
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 (mph) | 9.0 | 9.1 | 8.1 | 8.5 | 9.9 | 11.9 | 12.0 | 11.9 | 12.0 | 10.8 | 9.4 | 9.2 |
| 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 (mph) | 9.0 | 9.1 | 8.1 | 8.5 | 9.9 | 11.9 |
| 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 (mph) | 12.0 | 11.9 | 12.0 | 10.8 | 9.4 | 9.2 |
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.