Basseterre, Saint Kitts and Nevis Climate & Monthly Averages
Basseterre has a tropical wet-and-dry climate. September is the hottest month, averaging 85° by day; February is the coldest at 80°.
Rain, not cold, divides the year in Basseterre
There is not much of a seasonal calendar in Basseterre. Its warmest and coolest months differ by 3°C, against a dataset median nearer 15°C, which leaves 85°F (30°C) in September and 80°F (27°C) in February as the two ends of the year.
The wet-and-dry rhythm at a glance
Warmth peaks in September: highs of 85°F (30°C), lows of 79°F (26°C). February is the coolest month, with highs of 80°F (27°C) and lows near 74°F (24°C). Between the average September and the average February lie 3°C, a narrower spread than all but 8% of the 3496 cities in our dataset.
June is the brightest month at 11.8 hours of sun a day, against an annual average of 11.2 - sunnier than almost anywhere else we cover. Precipitation concentrates in September - 4.8 inches (121 mm) on 20 days - and thins out by March. Days and nights are about 3°C apart on average - narrower than almost anywhere else we cover. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 91°F (33°C) and the lowest daily minimum 67°F (20°C).
More climate facts for Basseterre
- Hottest month: September - highs near 85°F (30°C)
- Coldest month: February - highs near 80°F (27°C)
- Decade extremes (2015-2024): 91°F (33°C) high · 67°F (20°C) low
- Wettest month: September (20 rainy days) · Sunniest: June (11.8 h sun/day)
- Climate type: tropical wet-and-dry
- Annual swing: 3°C between the average warmest and coolest month · day to night: 3°C
- Average humidity: 76%
Choosing the right part of the year in Basseterre
Choose dates by rain, not just temperature
Aim for January to April if you get the choice: humidity and rainfall are at their lowest, which is what actually varies here, and highs average 81°F (27°C) against roughly 15 wet days a month. For the same question asked the other way round, see where else is warm in January.
What the humidity changes
Pack for Basseterre with light clothing for the warm months, proper waterproofs rather than an umbrella - wet days are the norm here and moisture-wicking fabrics for the humidity. Even in September, lows of 79°F (26°C) make an extra layer worth the space.
Warm all year: the monthly rain pattern
Each card shows the average high and low. The bar places that month between Basseterre's coldest night and warmest afternoon.
January
- Rain
- 15 days
- Sunshine
- 10.8 h
- Daylight
- 11.2 h
February
- Rain
- 14 days
- Sunshine
- 10.9 h
- Daylight
- 11.6 h
March
- Rain
- 14 days
- Sunshine
- 11.4 h
- Daylight
- 12.0 h
April
- Rain
- 15 days
- Sunshine
- 11.7 h
- Daylight
- 12.5 h
May
- Rain
- 17 days
- Sunshine
- 11.6 h
- Daylight
- 12.9 h
June
- Rain
- 16 days
- Sunshine
- 11.8 h
- Daylight
- 13.2 h
July
- Rain
- 20 days
- Sunshine
- 11.8 h
- Daylight
- 13.1 h
August
- Rain
- 20 days
- Sunshine
- 11.5 h
- Daylight
- 12.7 h
September
- Rain
- 20 days
- Sunshine
- 11.0 h
- Daylight
- 12.2 h
October
- Rain
- 20 days
- Sunshine
- 10.7 h
- Daylight
- 11.7 h
November
- Rain
- 18 days
- Sunshine
- 10.1 h
- Daylight
- 11.3 h
December
- Rain
- 16 days
- Sunshine
- 10.5 h
- Daylight
- 11.1 h
Looking for warmer alternatives? Browse warm places by month, or compare Basseterre's coolest part of the year: January, February, March.
Monthly temperature and rain table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 80° | 75° | 15 | 1.8 in | 10.8 h/day | 11.2 h | 48% | 75% |
| February | 80° | 74° | 14 | 2.1 in | 10.9 h/day | 11.6 h | 51% | 74% |
| March | 81° | 75° | 14 | 1.6 in | 11.4 h/day | 12.0 h | 47% | 73% |
| April | 82° | 76° | 15 | 2.2 in | 11.7 h/day | 12.5 h | 51% | 75% |
| May | 83° | 78° | 17 | 2.4 in | 11.6 h/day | 12.9 h | 55% | 76% |
| June | 84° | 79° | 16 | 2.1 in | 11.8 h/day | 13.2 h | 55% | 76% |
| July | 85° | 79° | 20 | 3.0 in | 11.8 h/day | 13.1 h | 63% | 77% |
| August | 85° | 79° | 20 | 3.9 in | 11.5 h/day | 12.7 h | 65% | 78% |
| September | 85° | 79° | 20 | 4.8 in | 11.0 h/day | 12.2 h | 67% | 79% |
| October | 85° | 79° | 20 | 4.2 in | 10.7 h/day | 11.7 h | 65% | 79% |
| November | 83° | 78° | 18 | 4.0 in | 10.1 h/day | 11.3 h | 59% | 78% |
| December | 82° | 76° | 16 | 2.2 in | 10.5 h/day | 11.1 h | 53% | 75% |
How Basseterre compares for rain and warmth
- Basseterre averages 80°F (27°C) across the year - warmer than 92% of the 3496 cities we track.
- Rain or snow reaches the ground on 207 days a year - more wet days than 92% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.
How the calendar changes in warm-weather Basseterre
March through May
Through March through May, Basseterre sits firmly in the heat: 82°F (28°C) by day, 76°F (24°C) after dark, and rain falls on around 47 of the 90 days. Daylight is generous - around 11.6 hours of sun a day.
June through August
Through June through August, Basseterre runs hot: 85°F (29°C) by day, 79°F (26°C) after dark, and rain falls on around 56 of the 90 days. Daylight is generous - around 11.7 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
September through November
Through September through November, Basseterre is hot: 84°F (29°C) by day, 79°F (26°C) after dark, and rain falls on around 58 of the 90 days. Daylight is generous - around 10.6 hours of sun a day.
December through February
December through February in Basseterre settles into easy warmth, with daytime highs averaging 80°F (27°C) and nights around 75°F (24°C); rain falls on around 46 of the 90 days. Daylight is generous - around 10.7 hours of sun a day.
Questions about heat and rain in Basseterre
What should I pack for Basseterre?
What is the average temperature in Basseterre?
Is Basseterre warmer or cooler than most cities?
Does Basseterre have seasons?
Basseterre temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.