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Contents
- The climate of Basseterre
- The best time to visit Basseterre
- The worst time to visit Basseterre
- Spring weather in Basseterre
- Summer weather in Basseterre
- Autumn weather in Basseterre
- Winter weather in Basseterre
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
A bridge across the lovely waters leading to Basseterre, Saint Kitts, and Nevis
The climate of Basseterre
Basseterre, the capital of Saint Kitts and Nevis, lies within a Köppen climate zone referred to as Tropical Wet and Dry or Savanna (Aw). Indicative of this climate classification, rainfall patterns deviate significantly over the course of the year with noticeable periods of increased precipitation.
Oceanic influences stabilize Basseterre's temperatures to a moderate but consistent fluctuation between 24.9°C (76.8°F) to 28.7°C (83.7°F) all year round, making it appealing to those who fancy a consistently warm climate. Relative humidity generally remains constant, oscillating from 75% to 78%. While residents and visitors might perceive a slight variation in humidity as insignificant, these slight fluctuations can be notably felt during the highest and lowest temperature months.
Rainfall in Basseterre varies substantially throughout the year. The scenario ranges from a low 15mm (0.59") in February to a peak of 51mm (2.01") in October. Coinciding with this, the number of rainfall days varies from 12.6 days in February to 19.3 days in May. It is noteworthy that the months with the highest rainfall also record the highest numbers of rainy days. In terms of wind, Basseterre sees wind speeds fluctuating from 19.6km/h (12.2mph) to 26.3km/h (16.3mph) annually, indicating a windy, breezy climate.
Oceanic influences stabilize Basseterre's temperatures to a moderate but consistent fluctuation between 24.9°C (76.8°F) to 28.7°C (83.7°F) all year round, making it appealing to those who fancy a consistently warm climate. Relative humidity generally remains constant, oscillating from 75% to 78%. While residents and visitors might perceive a slight variation in humidity as insignificant, these slight fluctuations can be notably felt during the highest and lowest temperature months.
Rainfall in Basseterre varies substantially throughout the year. The scenario ranges from a low 15mm (0.59") in February to a peak of 51mm (2.01") in October. Coinciding with this, the number of rainfall days varies from 12.6 days in February to 19.3 days in May. It is noteworthy that the months with the highest rainfall also record the highest numbers of rainy days. In terms of wind, Basseterre sees wind speeds fluctuating from 19.6km/h (12.2mph) to 26.3km/h (16.3mph) annually, indicating a windy, breezy climate.
The best time to visit Basseterre
The ideal time to appreciate Basseterre’s distinctive weather conditions largely depends on one’s preference. Individuals who enjoy basking in sunshine should consider February and March, when sunshine hours reach a peak of 10.1 hours a day. Despite these months experiencing 12.6 and 15.6 days of rainfall respectively, they record the least amount of rainfall at 15mm (0.59") and 19mm (0.75") respectively. During these months, temperatures hover between 24.9°C (76.8°F) to 26.3°C (79.3°F), making them the most comfortable months temperature-wise.
The worst time to visit Basseterre
For those looking to avoid excess rainfall, October and November might be unfavorable due to the increased frequency and amount of rainfall these months attract. October experiences the highest rainfall at 51mm (2.01") coupled with a significantly high 18.8 days of rainfall. Despite the high sunshine hours of 10.1 a day, the rainfall occurrence might disrupt several outdoor activities. Similarly, November also records high rainfall at 48mm (1.89") spread through about 18.3 days.
Spring weather in Basseterre
Spring, namely the months of March, April, and May signal progressively increasing temperatures in Basseterre, ranging from 25.8°C (78.4°F) in March to 28.1°C (82.6°F) in May. Sunshine hours during this period peak at 10.4 hours in May. However, the onset of spring is also marked by a progressive increase in rainfall from 19mm (0.75") in March to 43mm (1.69") in May. Winds remain relatively mild, within a range of 23.5km/h (14.6mph) to 25km/h (15.5mph), providing a pleasant contrast to the warming temperatures.
Summer weather in Basseterre
Summer, encompassing June, July, and August, experiences high temperatures from 28.2°C (82.8°F) to 28.7°C (83.7°F). The relatively high humidity, ranging from 78%, make these months feel hotter than the actual temperatures suggest. Rainfall during this period increases and peaks at 43mm (1.69") in August while wind speeds also peak at 26.3km/h (16.3mph) in June, further emphasizing the tropical climate character of Basseterre during summers.
Autumn weather in Basseterre
Autumn, from September to November, witnesses a nominal cooling of temperatures, moving from 28.5°C (83.3°F) in September to 27.1°C (80.8°F) in November. However, these months are characterized by high rainfall, peaking at 51mm (2.01") in October and relatively high humidity of 77% in September and 76% in November. Despite the high rainfall, sunshine hours remain fairly constant at around 10.1 hours a day.
Winter weather in Basseterre
Winter weather in Basseterre, during December, January, and February, experiences a downshift in temperatures, descending to 24.9°C (76.8°F) in February, the lowest of the year. Correspondingly, rainfall decreases to 15mm (0.59") in February as well, the least rainy month of the year. Coupled with the relatively mild wind speeds ranging from 24.6km/h (15.3mph) to 25.4km/h (15.8mph), the lower temperatures make for comfortable living conditions during the winter months.
Weather in January
Experiencing a refreshing break from the usually constant trade winds, January in Basseterre, Saint Kitts and Nevis is a parade of soothing sea breezes. The preliminary, gentle showers mark the onset of the transition period of dry spell to rainfall. Weather in January »
Weather in February
February brings a distinctive calm in weather conditions compared to the previous month with a somewhat drier atmosphere signalling the approaching dry season. The trade winds continue to blow but in a more subdued manner, with average wind speed slightly down to 25.2km/h (15.7mph). Weather in February »
Weather in March
Basseterre, Saint Kitts and Nevis in March epitomizes a true dry season with a considerable fall in rainfall compared to its earlier months. A slight decrease in wind speed to 23.7km/h (14.7mph) results in really warm days and generally calm weather throughout the month. Weather in March »
Weather in April
The weather in Basseterre, Saint Kitts and Nevis during April is all about amplification. The warming trend continues with humidity levels rising, indicating the start of wet months ahead. The average rainfall steps up as well with 19mm (0.75") showers throughout the day. Weather in April »
Weather in May
May in Basseterre marks the commencement of the rainy season, with the maximum recorded rainfall of 43mm (1.69"). The days are peppered with sudden, albeit short-lived, rainfall causing the city to sparkle and glisten. The increased humidity in the atmosphere adds a hint of zest to the otherwise warm weather. Weather in May »
Weather in June
Indicating the peak of the rainy season, June in Basseterre, Saint Kitts and Nevis exudes vibrancy as both flora and fauna bloom in delightful colors. The temperature reaches its zenith with the sea offering respite from the incessant warmth. Weather in June »
Weather in July
July carries forward the upbeat rhythm of Basseterre, Saint Kitts and Nevis’ weather from June. Despite numerous rainfall days, sunny spells aren’t unusual during this time of year. Strong winds at 26.3km/h (16.3mph) classically dominate the weather scenario. Weather in July »
Weather in August
August in Basseterre sees the rainfall intensity hitting a high note once again, matching up to the levels experienced in May. The average temperatures hover around similar values, adding continuity to the weather elements of the previous month. Weather in August »
Weather in September
September remains consistent with the preceding month's weather; however, the rainfall accumulates to a high record of 50mm (1.97"). Also, the winds seem to compose down from the boisterous energy of the prior months, registering a speed of 20.4km/h (12.7mph) on average. Weather in September »
Weather in October
The month of October acquaints Basseterre, Saint Kitts and Nevis with a tranquil weather transition from monsoon to lesser rainfall. Sunshine days take precedence, gently edging the average rainfall days. As temperatures begin to recede, the November winds start to whip up, though initially at a relatively lower speed of 19.6km/h (12.2mph). Weather in October »
Weather in November
November distinctly showcases the notable shift from the rainy to the dry season in Basseterre, Saint Kitts and Nevis. The winds make a comeback, bursting at an increased average pace of 20.9km/h (13mph). The rainclouds recess, paving way for radiant sunshine that beautifully lights up each corner of the city. Weather in November »
Weather in December
Bidding goodbye to the bygone fluctuating weather, December in Basseterre, Saint Kitts and Nevis promises a delightful winter break. Despite being the last month of the year, December maintains continuity with November's soothing weather. Weather in December »
[Resources]Frequently asked questions
What is the least humid month in Basseterre?
The months with the lowest humidity in Basseterre are January through March and December, with an average relative humidity of 75%.
How much does it rain in Basseterre?
Throughout the year, in Basseterre, there are 198.3 rainfall days, and 386mm (15.2") of precipitation is accumulated.
What months are the sea coldest in Basseterre?
January through March, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater.
When is the highest UV index in Basseterre?
January through December, with an average maximum UV index of 7, are months with the highest UV index.
What is the month with the lowest UV index in Basseterre?
The months with the lowest UV index are January through December, with an average maximum UV index of 7.
What is the driest month in Basseterre?
The month with the least rainfall is February, when the rain falls for 12.6 days and typically collects 15mm (0.59") of precipitation.
What are the coldest months in Basseterre?
The coldest month in Basseterre, Saint Kitts and Nevis, is March, with an average high-temperature of 25.8°C (78.4°F) and an average low-temperature of 24.9°C (76.8°F).
What are the most humid months in Basseterre?
May through August, with an average relative humidity of 78%, are most humid months.
When are the longest days in Basseterre?
June has the longest days of the year in Basseterre, Saint Kitts and Nevis, with an average of 13h and 6min of daylight.
What month has the most sunshine in Basseterre?
The month with the most sunshine in Basseterre is August, with an average of 10.7h of sunshine.
What are the warmest months in Basseterre?
September is Basseterre's warmest month, registering average high temperatures of 28.7°C (83.7°F) and lows of 27.7°C (81.9°F).
What months are the sea warmest in Basseterre?
The months with the warmest seawater in Basseterre, Saint Kitts and Nevis, are September and October, with an average sea temperature of 29°C (84.2°F).
What is the rainiest month in Basseterre?
The month with the most rainfall in Basseterre is October, when the rain falls for 18.8 days and typically aggregates up to 51mm (2.01") of precipitation.
What is the month with the shortest days in Basseterre?
With an average of 11h and 6min of daylight, December has the shortest days of the year.
Is there Daylight Saving Time (DST) in Basseterre?
Basseterre does not observe Daylight Saving Time (DST). AST timezone is used throughout the entire year.
What is the month with the least sunshine in Basseterre?
December has the least sunshine of the year, with an average of 6.5h of sunshine.
Average temperature
Basseterre, Saint Kitts and Nevis
The warmest month (with the highest average high temperature) is September (28.7°C).
The month with the lowest average high temperature is March (25.8°C).
The month with the highest average low temperature is October (27.8°C).
The coldest month (with the lowest average low temperature) is March (24.9°C).
Average pressure
Basseterre, Saint Kitts and Nevis
- Average pressure in January:
1016.2mbar - Average pressure in February:
1016.1mbar - Average pressure in March:
1015.7mbar - Average pressure in April:
1015.3mbar - Average pressure in May:
1015.4mbar - Average pressure in June:
1016.2mbar
- Average pressure in July:
1016mbar - Average pressure in August:
1014.6mbar - Average pressure in September:
1013.2mbar - Average pressure in October:
1012.5mbar - Average pressure in November:
1012.5mbar - Average pressure in December:
1014.8mbar
The months with the highest atmospheric pressure are January and June (1016.2mbar).
The months with the lowest atmospheric pressure are October and November (1012.5mbar).
Average wind speed
Basseterre, Saint Kitts and Nevis
- Average wind speed in January:
25.4km/h - Average wind speed in February:
25.2km/h - Average wind speed in March:
23.7km/h - Average wind speed in April:
23.5km/h - Average wind speed in May:
23.7km/h - Average wind speed in June:
25km/h
- Average wind speed in July:
26.3km/h - Average wind speed in August:
24.6km/h - Average wind speed in September:
20.4km/h - Average wind speed in October:
19.6km/h - Average wind speed in November:
20.9km/h - Average wind speed in December:
24.6km/h
The windiest month (with the highest average wind speed) is July (26.3km/h).
The calmest month (with the lowest average wind speed) is October (19.6km/h).
Average humidity
Basseterre, Saint Kitts and Nevis
The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are January, February, March and December (75%).
Average rainfall
Basseterre, Saint Kitts and Nevis
The wettest month (with the highest rainfall) is October (51mm).
The driest month (with the least rainfall) is February (15mm).
Average rainfall days
Basseterre, Saint Kitts and Nevis
- Average rainfall days in January:
12.8 days - Average rainfall days in February:
12.6 days - Average rainfall days in March:
15.6 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
19.3 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
18.8 days - Average rainfall days in September:
18.3 days - Average rainfall days in October:
18.8 days - Average rainfall days in November:
18.3 days - Average rainfall days in December:
16.9 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (12.6 days).
Average sea temperature
Basseterre, Saint Kitts and Nevis
The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are January, February and March (26°C).
Average daylight / Average sunshine
Basseterre, Saint Kitts and Nevis
- Average daylight in January:
11h and 1min - Average daylight in February:
11h and 4min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 3min - Average daylight in May:
12h and 5min - Average daylight in June:
13h and 1min
- Average daylight in July:
13h and 0min - Average daylight in August:
12h and 4min - Average daylight in September:
12h and 1min - Average daylight in October:
11h and 4min - Average daylight in November:
11h and 2min - Average daylight in December:
11h and 1min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in January:
7h and 3min - Average sunshine in February:
9h and 1min - Average sunshine in March:
8h and 5min - Average sunshine in April:
10h and 1min - Average sunshine in May:
10h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 4min - Average sunshine in September:
10h and 1min - Average sunshine in October:
6h and 4min - Average sunshine in November:
6h and 4min - Average sunshine in December:
6h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days
Basseterre, Saint Kitts and Nevis
- Average sunshine days in January:
10.8 days - Average sunshine days in February:
10.2 days - Average sunshine days in March:
10.4 days - Average sunshine days in April:
10.3 days - Average sunshine days in May:
7.6 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
8.9 days - Average sunshine days in August:
7.7 days - Average sunshine days in September:
8.4 days - Average sunshine days in October:
8.6 days - Average sunshine days in November:
8.7 days - Average sunshine days in December:
8.6 days
The month with the most sunshine days is June (11.2 days).
The month with the least sunshine days is May (7.6 days).
Average UV index
Basseterre, Saint Kitts and Nevis
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover
Basseterre, Saint Kitts and Nevis
The months with the most cloud cover are May, June and July (Cloud cover 40).
The month with the least cloud cover is February (Cloud cover 32).
Average visibility
Basseterre, Saint Kitts and Nevis
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Basseterre, Saint Kitts and Nevis
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