Holiday Weather

St Lucia: Annual Weather Averages

November is the hottest month in St Lucia with an average temperature of 83°F (29°C) and the coldest is January at 79°F (26°C) with the most daily sunshine hours at 10 in March. The wettest month is September with an average of 193mm of rain. The best month to swim in the sea is in August when the average sea temperature is 84°F (29°C).

Average Temperature: St Lucia

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 26 26 27 27 28 28 28 28 28 28 29 27
°F 80 79 80 81 83 83 83 83 83 82 81 81

Average High/Low Temperature: St Lucia

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C 29 29 30 30 31 31 31 31 31 31 31 30
High °F 85 84 85 86 88 88 88 88 89 88 87 86
Low °C 23 23 23 24 25 25 25 25 25 25 26 24
Low °F 74 73 74 76 77 78 77 77 76 76 74 75

Average Rainfall: St Lucia

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 92 57 27 66 63 140 171 172 193 192 167 102
Days 21 16 16 16 15 20 21 21 19 20 20 19

Average Daily Sunshine Hours: St Lucia

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hours 8 9 10 9 9 9 8 8 9 8 8 8

Average Sea Temperature: St Lucia

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 27 27 27 27 28 28 28 29 29 29 28 28
°F 81 81 81 81 82 82 82 84 84 84 82 82

Average Humidity: St Lucia

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
% 74 73 73 74 74 77 78 78 78 79 79 75

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