Charlotte Amalie climate
Charlotte Amalie (U.S. Virgin Islands) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C81 °F, and about 1,002 mm39 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Charlotte Amalie climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2679 | 2578 | 2679 | 401.6 |
| Feb | 2679 | 2577 | 2678 | 291.2 |
| Mar | 2679 | 2577 | 2678 | 381.5 |
| Apr | 2780 | 2678 | 2679 | 542.1 |
| May | 2882 | 2780 | 2781 | 993.9 |
| Jun | 2883 | 2781 | 2882 | 732.9 |
| Jul | 2984 | 2882 | 2883 | 883.4 |
| Aug | 2984 | 2883 | 2983 | 1134.4 |
| Sep | 2984 | 2883 | 2984 | 1465.7 |
| Oct | 2984 | 2882 | 2883 | 1425.6 |
| Nov | 2882 | 2781 | 2882 | 1224.8 |
| Dec | 2781 | 2679 | 2780 | 592.3 |
| Year | 2984 | 2577 | 2781 | 1,00239 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 76% | 39% | 4.8 | 11:08 |
| Feb | 75% | 36% | 5.6 | 11:31 |
| Mar | 75% | 39% | 6.2 | 11:00 |
| Apr | 76% | 43% | 6.6 | 12:32 |
| May | 78% | 59% | 6.4 | 12:59 |
| Jun | 79% | 58% | 6.4 | 13:13 |
| Jul | 79% | 50% | 6.4 | 13:08 |
| Aug | 78% | 48% | 6.4 | 12:45 |
| Sep | 78% | 53% | 6.0 | 12:13 |
| Oct | 78% | 52% | 5.2 | 11:41 |
| Nov | 77% | 49% | 4.6 | 11:15 |
| Dec | 76% | 42% | 4.4 | 11:02 |
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 Charlotte Amalie is like
The warmest month is September, with an average high of 29 °C84 °F and a low of 28 °C83 °F. The coldest is February, when highs average 26 °C79 °F and lows 25 °C77 °F. Seasonal differences are small — just 3.1 °C5.5 °F between the warmest and the coolest month.
It is wet, with about 1,002 mm39 in of precipitation per year. The wettest three-month stretch is September–November, which brings 41% of the annual total. The wettest month is September (146 mm5.7 in), the driest is February (29 mm1.2 in).
Relative humidity ranges from 75% in March to 79% in June. The clearest skies (lowest average cloud amount, 36%) are typical of February. Average wind speed near the ground ranges from 16 km/h (10 mph) in September to 22 km/h (13 mph) in July. Daylight lasts from about 11.0 hours in December to 13.2 hours in June.
Best time to visit Charlotte Amalie
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December–April and June: average highs of 26 °C79 °F to 28 °C83 °F with 29 mm1.2 in to 73 mm2.9 in of precipitation per month.
The most challenging month is September, which is humid (78% relative humidity).
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 Charlotte Amalie
- Wetter months (May, July–November) — highs 2882 to 29 °C84 °F, lows 2780 to 28 °C83 °F, about 118 mm4.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Drier months (December–April, June) — highs 2679 to 28 °C83 °F, lows 2577 to 27 °C81 °F, about 49 mm1.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Charlotte Amalie compares
Compared with Carolina, about 108 km to the west, Charlotte Amalie has practically the same average temperature and receives 17% less precipitation (1,002 mm39 in vs 1,207 mm48 in). The difference is largest in November (0.7 °C1.2 °F warmer).
Places in other countries with the most similar temperature and rainfall pattern: Plymouth (Montserrat, Aw), Saint Johns (Antigua and Barbuda, Aw) and Ponce (Puerto Rico, Aw).
Nearby places
- Road Town 34 km · 27 °C81 °F · 646 mm25 in
- Carolina 108 km · 27 °C81 °F · 1,207 mm48 in
- San Juan 125 km · 27 °C81 °F · 1,207 mm48 in
- Ponce 183 km · 27 °C81 °F · 899 mm35 in
- Marigot 198 km · 27 °C81 °F · 614 mm24 in
- Gustavia 225 km · 27 °C81 °F · 614 mm24 in
- Basseterre 261 km · 27 °C81 °F · 792 mm31 in
- Plymouth 341 km · 27 °C80 °F · 1,003 mm39 in
Frequently asked questions
What is the warmest month in Charlotte Amalie?
September is the warmest month in Charlotte Amalie, with an average high of 29 °C (84 °F) and an average low of 28 °C (83 °F).
What is the coldest month in Charlotte Amalie?
February is the coldest month, with an average high of 26 °C (79 °F) and an average low of 25 °C (77 °F).
When does it rain the most in Charlotte Amalie?
September is the wettest month with about 146 mm (5.7 in) of precipitation; February is the driest with about 29 mm (1.2 in).
What is the best time to visit Charlotte Amalie?
Judging by long-term averages, the most comfortable months are December–April and June.
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.