Castries weather

Get the latest coronavirus (COVID-19) updates for St Lucia with current travel advice, statistics and online resources.

Recommended for St Lucia

  • Top deals & discounts
  • Castries climate averages by month
  • More destinations
  • Best time to go to Castries
  • Castries 5-day weather forecast
  • Castries weather today - current conditions (last 24-hours)

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

The weather guide for Castries, St Lucia shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

  • Save up to 45% on all inclusive holidays to St Lucia
  • Extra discount of up to £600 on selected room types
  • Travel before 26th March 2023 (inclusive)

Expires at 23:59 on Thursday 17th Dec 2020 · View all Sandals offers

SandalsHoliday resort finder

Which is the hottest month in Castries?

The hottest time of year in Castries is normally September. Expect maximum daytime temperatures to reach 86°F with very high heat and humidity.

Which month has the most rain in Castries?

In terms of rainfall, October is usually the wettest month in Castries with 10.6 inches on average. There are normally 18 days in October with some rain.

When is it sunniest in Castries?

The sunniest time of year in Castries is normally January with bright sunshine on average for 72% of daylight hours; that's 8 hours of sunshine per day.

When is the sea warmest in Castries?

The sea is usually at its warmest in Castries in September when the water temperature reaches 84°F.

Metric (°C)  |  Imperial (°F)

Back to top

Discover more about St Lucia

Compare Castries weather with the USA

Below the Castries weather chart shows average maximum daytime temperature for Castries, St Lucia and the USA (Washington).

Maximum daytime temperature (°F)

Castries, St Lucia
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

Compare more Castries weather >>

  • Book online & save on TUI holidays in 2021/2022
  • Pay £0 deposits with direct debit
  • Plus free child places available

TUITUI deal finder

Back to top

Tropical storm risk: Castries, St Lucia hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
1%
2.4%
3.6%
1.8%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The Castries, St Lucia tropical storm risk chart above shows the hurricane season. The chart was processed from data supplied by the US Meteorological Agency (NOAA). Find out more about our data sources.

More about tropical storms

  • Book online & save on TUI holidays in 2021/2022
  • Pay £0 deposits with direct debit
  • Plus free child places available

TUITUI deal finder

Back to top

Where's hot in St Lucia right now?

Below are the temperatures expected today at popular destinations in St Lucia. Select a destination to compare today's forecast with average weather conditions.

More destinations & map >>

Related posts

Popular travel offers

Back to Holiday Weather Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.