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Saint Lucia Weather and Climate: A Comprehensive Guide

The weather in Saint Lucia is characterized by a steady average temperature throughout the year. It maintains moderate precipitation patterns. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

With minimal seasonal shifts, Saint Lucia experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a very warm 31°C in September to a comfortable 29°C in the coolest month, February.

Nights are cooler, with lows often dropping to around 24°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Generally, Saint Lucia receives mid-range precipitation levels, with 969 mm annually. The climate in Saint Lucia shows significant variation throughout the year. Expect high rainfall in October, with an average of 137 mm of precipitation over 18 rainy days.

In contrast, February offers drier and sunnier days, with around 36 mm of rainfall over 13 rainy days. For more details, please visit our Saint Lucia Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

The average number of days each month with precipitation

Sunshine over the year

If you're planning a trip to Saint Lucia, rest assured that sunshine is an important factor. With peak sunshine in May at 8.3 hours daily and a slight dip to 7.1 hours in October, it maintains a sunny destination year-round. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Average humidity

The relative humidity is high throughout the year in Saint Lucia.

The city experiences its highest humidity in November, reaching 84%. In April, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

Forecast for Saint Lucia

Wed   Jan 15
29°C | 24°C
NE 4 m/s
3.2 mm
partly cloudy and chance of rain

partly cloudy and chance of rain

hourly forecast
Thu   Jan 16
29°C | 24°C
E 5 m/s
2.1 mm
partly cloudy and rain

partly cloudy and rain

hourly forecast
Fri   Jan 17
29°C | 24°C
E 5 m/s
2.2 mm
partly cloudy and rain

partly cloudy and rain

hourly forecast
5-Day Forecast 10-Day Forecast

Select a Month of Interest

Check the conditions for any month of the year.

The best time of year to visit Saint Lucia in Saint Lucia

The best time to visit is during the drier months: January, February, March and April.

Other facts from our historical weather data:
  • Which is the hottest month in Saint Lucia?
    September has an average maximum temperature of 31°C and is the hottest month of the year.
  • Which is the coolest month in Saint Lucia?
    The coolest month is February with an average maximum temperature of 29°C.
  • Which is the wettest month in Saint Lucia?
    October tops the wettest month list with 137 mm of rainfall.
  • Which is the driest month in Saint Lucia?
    February is the driest month with 36 mm of precipitation.
  • Which is the sunniest month in Saint Lucia?
    May is the sunniest month with an average of 249 hours of sunshine.

    • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

     

     


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