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The average day light hours per day in St Lucia in February are 11.7 and there are 4.7 hours of sunshine per day on average during February making it a sunny month that is overcast at times. The ultraviolet index in St Lucia in February is typically 11.6 during February.
Typical Weather in February. During February the temperatures in the Caribbean typically vary between a daily high of about 82.4 degrees and a daily low of approximately 72.1 degrees. During the month of February, it rains an average of 8.7 days. Total precipitation during the month averages 1.9 inches.ypical Weather in February. During February the temperatures in the Caribbean typically vary between a daily high of about 82.4 degrees and a daily low of approximately 72.1 degrees. During the month of February, it rains an average of 8.7 days. Total precipitation during the month averages 1.9 inches.