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Castries
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Castries Weather and Climate: A Comprehensive Guide

The weather in Castries is characterized by a steady average temperature throughout the year. It receives mid-range precipitation levels. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

The temperature in Castries remains steady throughout the year, providing a consistently very warm climate. Average maximum daytime temperatures range from a very warm 31°C in September, the warmest time of the year, to a comfortable 29°C during cooler months like February.

At night, temperatures typically drop to an average of around 24°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Generally, Castries has a moderate amount of precipitation, averaging 948 mm of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, October receives high rainfall, averaging 133 mm of precipitation, recorded across 18 rainy days. In contrast, the drier season, February brings less rainfall, with 36 mm over 13 rainy days. For more details, please visit our Castries 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

Year-round, Castries offers plenty of sunlight to enjoy during your holiday. The difference between the sunniest month, May, with 8.3 hours of daily sunshine, and October, the least sunny month, with 7.1 hours, is minimal. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine
Data from: Saint Lucia, Saint Lucia (4 KM, 2 Miles).

Daily hours of sunshine
Data from: Saint Lucia, Saint Lucia (4 KM, 2 Miles).

Average humidity

The relative humidity is high throughout the year in Castries.

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
Data from: Saint Lucia, Saint Lucia (4 KM, 2 Miles).

Forecast for Castries

Sat   Jan 11
30°C | 23°C
E 5 m/s
almost clear and no rain

almost clear and no rain

hourly forecast
Sun   Jan 12
30°C | 24°C
E 5 m/s
almost clear and no rain

almost clear and no rain

hourly forecast
Mon   Jan 13
30°C | 23°C
E 6 m/s
2.5 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 Castries 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 Castries?
    September has an average maximum temperature of 31°C and is the hottest month of the year.
  • Which is the coolest month in Castries?
    The coolest month is February with an average maximum temperature of 29°C.
  • Which is the wettest month in Castries?
    October tops the wettest month list with 133 mm of rainfall.
  • Which is the driest month in Castries?
    February is the driest month with 36 mm of precipitation.
  • Which is the sunniest month in Castries?
    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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