Castries weather in March 2025

Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Castries in March. Check more long-term weather averages for Castries in March before you book your next holiday to St Lucia in 2025/2026.

  • 29°C maximum daytime temperature in March in Castries29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 13 days with some rainfall in March in Castries13
    13 days with some rainfall
  • 22°C minimum night-time temperature in March in Castries22
    22°C min night temperature
  • 12 hours of daylight per day in March in Castries12
    12 hours of daylight per day
  • Moderate heat & humidity in March in CastriesM
    Moderate heat & humidity
  • 76 mm monthly rainfall in March in Castries76
    76 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in Castries11
    11+ (Extreme) UV index
  • 27°C sea temperature in March in Castries27
    27°C sea temperature

More about Castries

Castries by month

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The March weather guide for St Lucia (Castries) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about St Lucia

How hot is it in Castries in March?

Daytime temperatures usually reach 29°C in Castries in March with moderate heat and humidity, falling to 22°C at night.

How sunny is it in Castries in March?

There are normally 8 hours of bright sunshine each day in Castries in March - that's 69% of daylight hours.

How warm is the sea around Castries in March?

The average sea temperature around Castries in March is 27°C.

Does it rain in Castries in March?

There are usually 13 days with some rain in Castries in March and the average monthly rainfall is 76mm.

Castries March sunrise & sunset times

Browse the sunrise and sunset times for Castries in March 2025. Select a month to view Castries sunrise and sunset times for the next 12 months.


Date Sunrise times Sunset times
Saturday, 1st March 2025 06:20 18:12
Sunday, 16th March 2025 06:11 18:14
Monday, 31st March 2025 06:00 18:16

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