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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.
Because of its tropical climate, St Lucia is humid all-year-round. In March, the relative humidity fluctuates between 62% (mildly humid) and 87% (very humid), rarely falling below 55% (mildly humid) or reaching as high as 98% (very humid).