Where to Go for Great Weather
When to go · Climate guide

Saint Barthélemywhen to go

Saint Barthélemy's national averages run from 26 °C in February to 29 °C in September, with rainfall between 30 mm in March and 139 mm in October and 7.5–9.1 hours of sun a day. Against the default preferences (under 2.7 mm of rain a day, at least 6 hours of sun), the strongest months are January, February and March. Its 1 regions span 27–27 °C in annual mean temperature, so the national figure hides a good deal.

Region
North America
Area
24 km²
Climate at a glance · 10-year ERA5

A decade of weather, in one page

Temperature°C
Temperature · 12-month climatologySaint Barthélemy. Average daytime high by month in °C. Lowest in February (25.6), highest in September (28.5). Monthly means: 25.9, 25.6, 25.7, 26.1, 26.9, 27.7, 28.0, 28.4, 28.5, 28.2, 27.4, 26.6.
— daytime high— overnight low▬ typical range
View data table
MonthAverage daytime high (°C)Average overnight low (°C)Typical lowTypical high
January25.924.723.626.8
February25.624.323.026.3
March25.724.523.326.6
April26.124.823.827.2
May26.925.724.528.3
June27.726.525.128.9
July28.026.625.629.0
August28.427.025.829.2
September28.526.925.729.4
October28.226.725.429.4
November27.426.124.928.4
December26.625.424.227.5
Rainfallmm
Rainfall · 12-month climatologySaint Barthélemy. Rainfall by month in mm. Lowest in March (30), highest in October (139). Monthly means: 38, 44, 30, 48, 55, 50, 82, 94, 138, 139, 114, 46.
View data table
MonthRainfall (mm)
January38
February44
March30
April48
May55
June50
July82
August94
September138
October139
November114
December46
Sunshinehr / day
Sunshine · 12-month climatologySaint Barthélemy. Sunshine hours by month in hr / day. Lowest in November (7.5), highest in March (9.1). Monthly means: 7.9, 8.5, 9.1, 8.7, 8.6, 8.6, 8.4, 8.2, 7.7, 7.7, 7.5, 7.9.
View data table
MonthSunshine hours (hr / day)
January7.9
February8.5
March9.1
April8.7
May8.6
June8.6
July8.4
August8.2
September7.7
October7.7
November7.5
December7.9
Windkm/h
Wind · 12-month climatologySaint Barthélemy. Average wind speed by month in km/h. Lowest in October (20.9), highest in July (27.8). Monthly means: 25.0, 26.8, 24.5, 23.4, 24.5, 26.3, 27.8, 25.0, 21.4, 20.9, 22.5, 25.4.
— average▬ typical range
View data table
MonthAverage wind speed (km/h)Typical lowTypical high
January25.012.236.4
February26.812.938.2
March24.511.636.0
April23.49.333.2
May24.516.932.0
June26.318.433.2
July27.819.634.5
August25.015.133.9
September21.48.732.1
October20.99.332.5
November22.511.631.9
December25.412.136.9
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Sea surface temperature

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Heat index

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Humidity

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Safety

No advisory on file for Saint Barthélemy

None of the six governments we track publishes a country-wide advisory for Saint Barthélemy. That is not the same as a clean bill of health — check your own government’s guidance before you travel.

Month by month

A year in Saint Barthélemy, in order

  1. Jan
    January25.9°C · 38 mm · 7.9 hr/day

    Around 26 °C with 38 mm of rain and 7.9 hours of sun a day.

    Around 26 °C with 38 mm of rain and 7.9 hours of sun a day.

  2. Feb
    February25.6°C · 44 mm · 8.5 hr/day

    Around 26 °C with 44 mm of rain and 8.5 hours of sun a day.

    Around 26 °C with 44 mm of rain and 8.5 hours of sun a day.

  3. Mar
    March25.7°C · 30 mm · 9.1 hr/day

    Around 26 °C with 30 mm of rain and 9.1 hours of sun a day.

    Around 26 °C with 30 mm of rain and 9.1 hours of sun a day.

  4. Apr
    April26.1°C · 48 mm · 8.7 hr/day

    Around 26 °C with 48 mm of rain and 8.7 hours of sun a day.

    Around 26 °C with 48 mm of rain and 8.7 hours of sun a day.

  5. May
    May26.9°C · 55 mm · 8.6 hr/day

    Around 27 °C with 55 mm of rain and 8.6 hours of sun a day.

    Around 27 °C with 55 mm of rain and 8.6 hours of sun a day.

  6. Jun
    June27.7°C · 50 mm · 8.6 hr/day

    Around 28 °C with 50 mm of rain and 8.6 hours of sun a day.

    Around 28 °C with 50 mm of rain and 8.6 hours of sun a day.

  7. Jul
    July28.0°C · 82 mm · 8.4 hr/day

    Around 28 °C with 82 mm of rain and 8.4 hours of sun a day.

    Around 28 °C with 82 mm of rain and 8.4 hours of sun a day.

  8. Aug
    August28.4°C · 94 mm · 8.2 hr/day

    Around 28 °C with 94 mm of rain and 8.2 hours of sun a day.

    Around 28 °C with 94 mm of rain and 8.2 hours of sun a day.

  9. Sep
    September28.5°C · 138 mm · 7.7 hr/day

    Around 29 °C with 138 mm of rain and 7.7 hours of sun a day.

    Around 29 °C with 138 mm of rain and 7.7 hours of sun a day.

  10. Oct
    October28.2°C · 139 mm · 7.7 hr/day

    Around 28 °C with 139 mm of rain and 7.7 hours of sun a day.

    Around 28 °C with 139 mm of rain and 7.7 hours of sun a day.

  11. Nov
    November27.4°C · 114 mm · 7.5 hr/day

    Around 27 °C with 114 mm of rain and 7.5 hours of sun a day.

    Around 27 °C with 114 mm of rain and 7.5 hours of sun a day.

  12. Dec
    December26.6°C · 46 mm · 7.9 hr/day

    Around 27 °C with 46 mm of rain and 7.9 hours of sun a day.

    Around 27 °C with 46 mm of rain and 7.9 hours of sun a day.

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