Adamstown climate
Adamstown (Pitcairn) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 23 °C73 °F, and about 1,427 mm56 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Adamstown climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2577 | 2475 | 2476 | 1244.9 |
| Feb | 2578 | 2576 | 2577 | 963.8 |
| Mar | 2578 | 2576 | 2577 | 1034.1 |
| Apr | 2576 | 2475 | 2476 | 1325.2 |
| May | 2374 | 2272 | 2373 | 1114.4 |
| Jun | 2272 | 2171 | 2271 | 1084.3 |
| Jul | 2271 | 2069 | 2170 | 1054.2 |
| Aug | 2170 | 2068 | 2169 | 1124.4 |
| Sep | 2170 | 2068 | 2169 | 1034.0 |
| Oct | 2271 | 2169 | 2170 | 1526.0 |
| Nov | 2272 | 2271 | 2272 | 1265.0 |
| Dec | 2475 | 2373 | 2374 | 1546.1 |
| Year | 2578 | 2068 | 2373 | 1,42756 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 81% | 62% | 6.9 | 13:32 |
| Feb | 80% | 57% | 6.6 | 12:58 |
| Mar | 80% | 59% | 5.7 | 12:18 |
| Apr | 78% | 69% | 4.4 | 11:32 |
| May | 78% | 72% | 3.4 | 10:55 |
| Jun | 78% | 75% | 3.0 | 10:35 |
| Jul | 77% | 71% | 3.3 | 10:43 |
| Aug | 78% | 71% | 3.9 | 11:15 |
| Sep | 79% | 74% | 4.9 | 11:59 |
| Oct | 80% | 77% | 5.6 | 12:44 |
| Nov | 81% | 75% | 6.3 | 13:23 |
| Dec | 81% | 70% | 6.7 | 13:41 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Adamstown is like
The warmest month is March, with an average high of 25 °C78 °F and a low of 25 °C76 °F. The coldest is August, when highs average 21 °C70 °F and lows 20 °C68 °F. Seasonal differences are small — just 4.5 °C8.1 °F between the warmest and the coolest month.
It is wet, with about 1,427 mm56 in of precipitation per year. Rain is spread fairly evenly through the year. The wettest month is December (154 mm6.1 in), the driest is February (96 mm3.8 in).
Relative humidity ranges from 77% in July to 81% in December. The clearest skies (lowest average cloud amount, 57%) are typical of February. Average wind speed near the ground ranges from 17 km/h (11 mph) in January to 21 km/h (13 mph) in July. Daylight lasts from about 10.6 hours in June to 13.7 hours in December.
Best time to visit Adamstown
Based on these averages, the most comfortable months for sightseeing and outdoor activities are January–March, May–September and November: average highs of 21 °C70 °F to 25 °C78 °F with 96 mm3.8 in to 126 mm5.0 in of precipitation per month.
The most challenging month is December, which is very wet (154 mm6.1 in).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Adamstown
- Summer (December–February) — highs 2475 to 25 °C78 °F, lows 2373 to 25 °C76 °F, about 125 mm4.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Autumn (March–May) — highs 2374 to 25 °C78 °F, lows 2272 to 25 °C76 °F, about 115 mm4.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Winter (June–August) — highs 2170 to 22 °C72 °F, lows 2068 to 21 °C71 °F, about 109 mm4.3 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
- Spring (September–November) — highs 2170 to 22 °C72 °F, lows 2068 to 22 °C71 °F, about 127 mm5.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Adamstown compares
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Karuri (Kenya, As), Kisumu (Kenya, Af) and Guadalajara de Buga (Colombia, Af).
Nearby places
Frequently asked questions
What is the warmest month in Adamstown?
March is the warmest month in Adamstown, with an average high of 25 °C (78 °F) and an average low of 25 °C (76 °F).
What is the coldest month in Adamstown?
August is the coldest month, with an average high of 21 °C (70 °F) and an average low of 20 °C (68 °F).
When does it rain the most in Adamstown?
December is the wettest month with about 154 mm (6.1 in) of precipitation; February is the driest with about 96 mm (3.8 in).
What is the best time to visit Adamstown?
Judging by long-term averages, the most comfortable months are January–March, May–September and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 0 m, while Adamstown lies at about 67 m. Temperatures on this page were therefore adjusted by −0.4 °C0.8 °F using the standard lapse rate of 6.5 °C per 1,000 m.