Castries weather in December 2021

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

  • 29°C maximum daytime temperature in December in Castries29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 18 days with some rainfall in December in Castries18
    18 days with some rainfall
  • 23°C minimum night-time temperature in December in Castries23
    23°C min night temperature
  • 11 hours of daylight per day in December in Castries11
    11 hours of daylight per day
  • Moderate heat & humidity in December in CastriesM
    Moderate heat & humidity
  • 149 mm monthly rainfall in December in Castries149
    149 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in December in Castries8
    8 (Very High) UV index
  • 28°C sea temperature in December in Castries28
    28°C sea temperature

Recommended for St Lucia

  • Top deals & discounts
  • Castries weather overview
  • Castries climate averages by month
  • More destinations
  • Best time to go to Castries
  • Castries 5-day weather forecast

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

The December weather guide for Castries, St Lucia 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.

  • Save up to 45% on all inclusive holidays to St Lucia
  • Plus up to £700 off selected room types
  • Travel before 4th December 2023 (inclusive)

Expires at 23:59 on Wednesday 28th Apr 2021 · View all Sandals offers

SandalsHoliday resort finder

How hot is it in Castries in December?

Daytime temperatures usually reach 29°C in Castries in December with moderate heat and humidity, falling to 23°C at night.

How sunny is it in Castries in December?

There are normally 8 hours of bright sunshine each day in Castries in December - that's 68% of daylight hours.

How warm is the sea around Castries in December?

The average sea temperature around Castries in December is 28°C.

Does it rain in Castries in December?

There are usually 18 days with some rain in Castries in December and the average monthly rainfall is 149mm.

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

Back to top

Castries sunrise & sunset times for December 2021

Browse the sunrise and sunset times for Castries in December 2021. Select a month to view Castries sunrise & sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st December 2021 06:12 17:34
Thursday, 16th December 2021 06:21 17:39
Friday, 31st December 2021 06:28 17:47
  • Save up to 45% on all inclusive holidays to St Lucia
  • Plus up to £700 off selected room types
  • Travel before 4th December 2023 (inclusive)

Expires at 23:59 on Wednesday 28th Apr 2021 · View all Sandals offers

SandalsHoliday resort finder

Related posts

Popular travel offers

Top ^

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