St Lucia weather in December 2019

  • 29°C maximum daytime temperature in December in St Lucia (Castries)29
    29°C max day temperature
  • 8 hours of sunshine per day (68% of daylight hours) in December in St Lucia8
    8 hours of sunshine per day
  • 18 days with some rainfall in December in St Lucia (Castries)18
    18 days with some rainfall
  • 23°C minimum night-time temperature in December in St Lucia (Castries)23
    23°C min night temperature
  • 11 hours of daylight per day in December in St Lucia (Castries)11
    11 hours of daylight per day
  • Moderate heat & humidity in December in St Lucia (Castries)M
    Moderate heat & humidity
  • 149 mm monthly rainfall in December in St Lucia (Castries)149
    149 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in December in St Lucia (Castries)8
    8 (Very High) UV index
  • 28°C sea temperature in December in St Lucia (Castries)28
    28°C sea temperature

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Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Lucia in December. Check more long-term weather averages for St Lucia in December before you book your next holiday to St Lucia in 2019/2020. The December weather averages shown above are for Castries.

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More about St Lucia

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The December weather guide for St Lucia, represented by 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)

Guide to St Lucia weather in December

The average maximum daytime temperature in St Lucia in December is a warm 29°C (84°F) with moderate heat & humidity. The average night-time temperature is usually a warm 23°C (73°F). There are usually 8 hours of bright sunshine each day, which represents 68% of the 11 hours of daylight.

Expect 149mm (5.9 inches) of rainfall across the whole of December with 18 days with some rain falling. Maximum UV levels will be very high (8 UV index) at midday when the skies are clear.

The average sea temperature in and around St Lucia in December is 28°C (82°F).

The weather in St Lucia in December is represented by Castries.

St Lucia sunrise & sunset times for December 2019

Browse the sunrise & sunset times for St Lucia in December 2019. Select a month to view St Lucia sunrise & sunset times for the next twelve months. The St Lucia sunrise & sunset times shown below are for Castries.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2019 06:12 17:34
Monday, 2nd December 2019 06:13 17:34
Tuesday, 3rd December 2019 06:13 17:34
Wednesday, 4th December 2019 06:14 17:35
Thursday, 5th December 2019 06:14 17:35
Friday, 6th December 2019 06:15 17:35
Saturday, 7th December 2019 06:15 17:35
Sunday, 8th December 2019 06:16 17:36
Monday, 9th December 2019 06:16 17:36
Tuesday, 10th December 2019 06:17 17:36
Wednesday, 11th December 2019 06:18 17:37
Thursday, 12th December 2019 06:18 17:37
Friday, 13th December 2019 06:19 17:38
Saturday, 14th December 2019 06:19 17:38
Sunday, 15th December 2019 06:20 17:38
Monday, 16th December 2019 06:20 17:39
Tuesday, 17th December 2019 06:21 17:39
Wednesday, 18th December 2019 06:21 17:40
Thursday, 19th December 2019 06:22 17:40
Friday, 20th December 2019 06:22 17:41
Saturday, 21st December 2019 06:23 17:41
Sunday, 22nd December 2019 06:23 17:42
Monday, 23rd December 2019 06:24 17:42
Tuesday, 24th December 2019 06:24 17:43
Wednesday, 25th December 2019 06:25 17:43
Thursday, 26th December 2019 06:25 17:44
Friday, 27th December 2019 06:26 17:44
Saturday, 28th December 2019 06:26 17:45
Sunday, 29th December 2019 06:27 17:45
Monday, 30th December 2019 06:27 17:46
Tuesday, 31st December 2019 06:27 17:46
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