Basseterre climate

Name: Basseterre
Address: KN

Basseterre is warmest in August, with average highs of 29 °C, and coldest in February, when nights average 24 °C. October is the wettest month (125 mm) and March the driest (23 mm). Figures are 1991–2020 climate normals.

Across a full year Basseterre averages 807 mm of rain and 357 days above 25 °C.

Saint Kitts and Nevis · -22 m elevation · population 12,920 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 29 °C
Coldest month February 24 °C
Driest month March 23 mm
Wettest month October 125 mm
Least cloud January 30 % cloud
Hottest on record June 31 °C
Coldest on record January 20 °C
Warmest sea September 29 °C

What to expectBasseterre through the year

Basseterre changes little through the year. Average daily highs stay between 26 and 29 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 357 days a year reach 25 °C, 2 of them reach 30 °C. The warmest reading in the 1991–2020 record is 31 °C, in June.

Rain is strongly seasonal. October averages 125 mm against 23 mm in March — 5.4 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Basseterre is warmest in September at 29 °C and coldest in February at 26 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	26.0 °C	34 mm	30 %
February	25.9 °C	24 mm	30 %
March	26.2 °C	23 mm	34 %
April	26.9 °C	35 mm	38 %
May	27.7 °C	65 mm	55 %
June	28.3 °C	51 mm	54 %
July	28.4 °C	75 mm	49 %
August	28.7 °C	92 mm	50 %
September	28.6 °C	117 mm	59 %
October	28.2 °C	125 mm	55 %
November	27.4 °C	106 mm	46 %
December	26.5 °C	59 mm	36 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	26.0 °C	24.1 °C	25.0 °C	27.7 °C	20.4 °C	29	0
February	25.9 °C	23.9 °C	24.8 °C	28.0 °C	20.7 °C	25	0
March	26.2 °C	24.0 °C	25.0 °C	28.5 °C	21.3 °C	29	0
April	26.9 °C	24.5 °C	25.6 °C	29.3 °C	22.0 °C	30	0
May	27.7 °C	25.3 °C	26.4 °C	30.1 °C	22.7 °C	31	0
June	28.3 °C	26.0 °C	27.1 °C	30.7 °C	24.0 °C	30	0
July	28.4 °C	26.1 °C	27.2 °C	30.6 °C	24.3 °C	31	0
August	28.7 °C	26.3 °C	27.4 °C	30.5 °C	24.1 °C	31	0
September	28.6 °C	26.3 °C	27.4 °C	30.7 °C	24.3 °C	30	1
October	28.2 °C	26.0 °C	27.1 °C	30.3 °C	23.9 °C	31	0
November	27.4 °C	25.4 °C	26.4 °C	29.2 °C	22.2 °C	30	0
December	26.5 °C	24.7 °C	25.6 °C	28.8 °C	22.1 °C	30	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	34 mm	10	11 h/day	30 %	76 %	31 km/h	26.6 °C
February	24 mm	8	12 h/day	30 %	74 %	30 km/h	26.2 °C
March	23 mm	7	12 h/day	34 %	73 %	28 km/h	26.3 °C
April	35 mm	9	13 h/day	38 %	76 %	28 km/h	26.8 °C
May	65 mm	12	13 h/day	55 %	78 %	27 km/h	27.4 °C
June	51 mm	11	13 h/day	54 %	78 %	30 km/h	27.9 °C
July	75 mm	15	13 h/day	49 %	79 %	32 km/h	28.0 °C
August	92 mm	17	13 h/day	50 %	80 %	29 km/h	28.5 °C
September	117 mm	17	12 h/day	59 %	80 %	27 km/h	28.8 °C
October	125 mm	18	12 h/day	55 %	80 %	26 km/h	28.8 °C
November	106 mm	16	11 h/day	46 %	79 %	27 km/h	28.3 °C
December	59 mm	13	11 h/day	36 %	77 %	30 km/h	27.4 °C

How Basseterre compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Basseterre	29 °C	24 °C	807 mm	357
Gustavia · Saint Barthelemy	28 °C	24 °C	757 mm	342
Plymouth · Montserrat	29 °C	24 °C	775 mm	361
Saint John’s · Antigua and Barbuda	29 °C	24 °C	837 mm	361
Basse-Terre · Guadeloupe	30 °C	24 °C	816 mm	364
Road Town · British Virgin Islands	28 °C	24 °C	825 mm	336
Charlotte Amalie · U.S. Virgin Islands	28 °C	24 °C	858 mm	338

Planning a trip? See the best time to visit Basseterre.

QuestionsCommon questions about Basseterre’s climate

When is the best time to visit Basseterre?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, March sit closest to 20 °C on average, August is the warmest month and March the driest. The month-by-month table above has the full picture.

How hot does Basseterre get?

In August, the warmest month, daily highs average 29 °C. About 2 days a year pass 30 °C. The highest value in the 1991–2020 record is 31 °C.

How cold does it get in winter?

Nights average 24 °C in February, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Basseterre?

October, averaging 125 mm over 18 days with rain. The driest month is March with 23 mm. The year as a whole averages 807 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Basseterre rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 17.296°, -62.725° , -22 m above sea level (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.