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

Saint Luciawhen to go

Saint Lucia's national averages run from 28 °C in January to 30 °C in September, with rainfall between 35 mm in February and 131 mm in October and 7.5–9.0 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 11 regions span 28–29 °C in annual mean temperature, so the national figure hides a good deal.

Capital
Castries
Region
North America
TZ
Europe/Paris
Area
549 km²
Climate at a glance · 10-year ERA5

A decade of weather, in one page

Temperature°C
Temperature · 12-month climatologySaint Lucia. Average daytime high by month in °C. Lowest in January (27.6), highest in September (29.9). Monthly means: 27.6, 27.6, 28.0, 28.6, 29.3, 29.3, 29.3, 29.6, 29.9, 29.4, 28.7, 28.2.
— daytime high— overnight low▬ typical range
View data table
MonthAverage daytime high (°C)Average overnight low (°C)Typical lowTypical high
January27.624.223.128.9
February27.624.022.928.9
March28.024.323.129.3
April28.624.923.830.0
May29.325.724.530.6
June29.325.924.730.6
July29.325.824.830.4
August29.626.024.930.8
September29.926.325.131.3
October29.426.024.831.1
November28.725.524.429.7
December28.224.923.729.2
Rainfallmm
Rainfall · 12-month climatologySaint Lucia. Rainfall by month in mm. Lowest in February (35), highest in October (131). Monthly means: 45, 35, 36, 41, 45, 86, 109, 117, 130, 131, 127, 53.
View data table
MonthRainfall (mm)
January45
February35
March36
April41
May45
June86
July109
August117
September130
October131
November127
December53
Sunshinehr / day
Sunshine · 12-month climatologySaint Lucia. Sunshine hours by month in hr / day. Lowest in October (7.5), highest in March (9.0). Monthly means: 8.2, 8.7, 9.0, 8.7, 8.5, 7.8, 7.9, 7.7, 7.7, 7.5, 7.6, 8.2.
View data table
MonthSunshine hours (hr / day)
January8.2
February8.7
March9.0
April8.7
May8.5
June7.8
July7.9
August7.7
September7.7
October7.5
November7.6
December8.2
Windkm/h
Wind · 12-month climatologySaint Lucia. Average wind speed by month in km/h. Lowest in September (15.7), highest in June (23.1). Monthly means: 21.8, 23.0, 21.4, 20.6, 21.8, 23.1, 21.7, 18.7, 15.7, 17.2, 19.1, 21.3.
— average▬ typical range
View data table
MonthAverage wind speed (km/h)Typical lowTypical high
January21.814.728.9
February23.014.230.0
March21.411.728.7
April20.613.426.3
May21.815.726.6
June23.117.128.8
July21.715.927.4
August18.711.325.4
September15.78.224.7
October17.28.726.1
November19.110.925.6
December21.311.428.1
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Sea surface temperature

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Heat index

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Humidity

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Safety · 3 governments

What the governments say about Saint Lucia

Combined advisory · most-cautious-wins
Exercise increased caution
Highest level across 3 governments · Advisory last changed
See breakdown by country
DE

Exercise normal precautions

Changed Checked www.auswaertiges-amt.de
US

Exercise increased caution

Changed Checked travel.state.gov
Month by month

A year in Saint Lucia, in order

  1. Jan
    January27.6°C · 45 mm · 8.2 hr/day

    Around 28 °C with 45 mm of rain and 8.2 hours of sun a day.

    Around 28 °C with 45 mm of rain and 8.2 hours of sun a day.

  2. Feb
    February27.6°C · 35 mm · 8.7 hr/day

    Around 28 °C with 35 mm of rain and 8.7 hours of sun a day.

    Around 28 °C with 35 mm of rain and 8.7 hours of sun a day.

  3. Mar
    March28.0°C · 36 mm · 9.0 hr/day

    Around 28 °C with 36 mm of rain and 9.0 hours of sun a day.

    Around 28 °C with 36 mm of rain and 9.0 hours of sun a day.

  4. Apr
    April28.6°C · 41 mm · 8.7 hr/day

    Around 29 °C with 41 mm of rain and 8.7 hours of sun a day.

    Around 29 °C with 41 mm of rain and 8.7 hours of sun a day.

  5. May
    May29.3°C · 45 mm · 8.5 hr/day

    Around 29 °C with 45 mm of rain and 8.5 hours of sun a day.

    Around 29 °C with 45 mm of rain and 8.5 hours of sun a day.

  6. Jun
    June29.3°C · 86 mm · 7.8 hr/day

    Around 29 °C with 86 mm of rain and 7.8 hours of sun a day.

    Around 29 °C with 86 mm of rain and 7.8 hours of sun a day.

  7. Jul
    July29.3°C · 109 mm · 7.9 hr/day

    Around 29 °C with 109 mm of rain and 7.9 hours of sun a day.

    Around 29 °C with 109 mm of rain and 7.9 hours of sun a day.

  8. Aug
    August29.6°C · 117 mm · 7.7 hr/day

    Around 30 °C with 117 mm of rain and 7.7 hours of sun a day.

    Around 30 °C with 117 mm of rain and 7.7 hours of sun a day.

  9. Sep
    September29.9°C · 130 mm · 7.7 hr/day

    Around 30 °C with 130 mm of rain and 7.7 hours of sun a day.

    Around 30 °C with 130 mm of rain and 7.7 hours of sun a day.

  10. Oct
    October29.4°C · 131 mm · 7.5 hr/day

    Around 29 °C with 131 mm of rain and 7.5 hours of sun a day.

    Around 29 °C with 131 mm of rain and 7.5 hours of sun a day.

  11. Nov
    November28.7°C · 127 mm · 7.6 hr/day

    Around 29 °C with 127 mm of rain and 7.6 hours of sun a day.

    Around 29 °C with 127 mm of rain and 7.6 hours of sun a day.

  12. Dec
    December28.2°C · 53 mm · 8.2 hr/day

    Around 28 °C with 53 mm of rain and 8.2 hours of sun a day.

    Around 28 °C with 53 mm of rain and 8.2 hours of sun a day.

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