Castries weather live forecast

Today's maximum temperature in Castries is expected to be 31°C. Select a day from the live weather forecast for Castries, St Lucia for more weather parameters.

5-day weather forecast updated at 04:00 on Sunday 27th July 2025 GMT

More about Castries

Castries by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for St Lucia

Virgin Holidays: £100 off Walt Disney World resort

  • Save £100 per room at Walt Disney World Resort 2026 stays
  • Enjoy 14 day park tickets for the price of 7. Use promo code
  • Travel between 7th Jan & 19th Dec 2026 (inclusive)
Show discount codeShow discount code ******E26
Redeem Virgin Holidays discount code >>

Expires at 23:59 on Wednesday 5th Nov 2025 · View all Virgin Holidays offers

The 5-day weather forecast for St Lucia (Castries) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Castries weather forecast by day

Below are the detailed weather forecasts for Castries for the next 5 days.

Castries weather for Sunday 27th July 2025

Expect broken clouds in Castries, St Lucia with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 9 kph from the East9
    kph wind from E

Back to top

Castries weather for Monday 28th July 2025

Expect isolated thunderstorms in Castries, St Lucia with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 58% chance of some rain and a gentle breeze of 17 kph from the east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 27°C minimum temperature27
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 58% chance of some rain58
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 17 kph from the East17
    kph wind from E

Back to top

Castries weather for Tuesday 29th July 2025

Expect broken clouds in Castries, St Lucia with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 15 kph from the East15
    kph wind from E

Back to top

Castries weather for Wednesday 30th July 2025

Expect isolated thunderstorms in Castries, St Lucia with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 55% chance of some rain and a light breeze of 11 kph from the east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 55% chance of some rain55
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 11 kph from the East11
    kph wind from E

Back to top

Castries weather for Thursday 31st July 2025

Expect isolated thunderstorms in Castries, St Lucia with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 55% chance of some rain and a gentle breeze of 17 kph from the east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 27°C minimum temperature27
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 55% chance of some rain55
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 17 kph from the East17
    kph wind from E

Back to top

Virgin Holidays: up to £300 off luxury breaks

  • Save up to £300 on luxury trips with Virgin Holidays
  • Discover breaks to the Maldives, Dubai, Cancun & beyond
  • Travel before 19th April 2026 (inclusive)
Show discount codeShow discount code ******URY
Redeem Virgin Holidays discount code >>

Expires at 23:59 on Thursday 7th Aug 2025 · View all Virgin Holidays offers

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

Back to top

More about St Lucia

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^