Home › Cities › Pitcairn Islands › Adamstown
Adamstown, Pitcairn Islands climate
Af Tropical rainforest
Adamstown has a remarkably steady warm-temperate climate (Tropical rainforest, Köppen Af). The hottest month is March with an average daily high near 26°C, while the coldest is September averaging around 20°C at night. Precipitation is fairly even year-round, totalling about 1443 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)Adamstown climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 26 | 26 | 25 | 24 | 23 | 22 | 22 | 21 | 22 | 23 | 24 |
| Avg temp (°C) | 25 | 25 | 25 | 25 | 23 | 22 | 21 | 21 | 21 | 21 | 22 | 24 |
| Avg low (°C) | 24 | 25 | 25 | 24 | 23 | 22 | 21 | 20 | 20 | 21 | 22 | 23 |
| Precipitation (mm) | 114 | 101 | 98 | 140 | 112 | 120 | 112 | 106 | 108 | 150 | 115 | 166 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 26 | 26 | 25 | 24 | 23 |
| Avg temp (°C) | 25 | 25 | 25 | 25 | 23 | 22 |
| Avg low (°C) | 24 | 25 | 25 | 24 | 23 | 22 |
| Precipitation (mm) | 114 | 101 | 98 | 140 | 112 | 120 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 22 | 21 | 22 | 23 | 24 |
| Avg temp (°C) | 21 | 21 | 21 | 21 | 22 | 24 |
| Avg low (°C) | 21 | 20 | 20 | 21 | 22 | 23 |
| Precipitation (mm) | 112 | 106 | 108 | 150 | 115 | 166 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 57 | 58 | 69 | 71 | 73 | 70 | 68 | 73 | 74 | 72 | 71 |
| Relative humidity (%) | 81 | 80 | 79 | 79 | 78 | 78 | 78 | 78 | 79 | 81 | 81 | 82 |
| Wind speed (mph) | 11.1 | 11.1 | 10.9 | 12.1 | 12.2 | 13.1 | 13.4 | 13.4 | 12.7 | 12.5 | 11.8 | 11.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 57 | 58 | 69 | 71 | 73 |
| Relative humidity (%) | 81 | 80 | 79 | 79 | 78 | 78 |
| Wind speed (mph) | 11.1 | 11.1 | 10.9 | 12.1 | 12.2 | 13.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 68 | 73 | 74 | 72 | 71 |
| Relative humidity (%) | 78 | 78 | 79 | 81 | 81 | 82 |
| Wind speed (mph) | 13.4 | 13.4 | 12.7 | 12.5 | 11.8 | 11.6 |
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.