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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.
The average temperature on St. Lucia ranges from 70 degrees Fahrenheit to the upper 90s. Humidity on the island averages between 70 and 90 percent throughout the year. December through January are generally the coolest months with the temperatures being in the mid 70s to mid 80s in degrees Fahrenheit.