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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.
Weather on St. Lucia in January. While cold weather blankets much of the world during January, vacationers will flock to St. Lucia for a little fun in the sun. Warm temperatures in the mid-80s and plenty of sun make this month one of the most popular during the year.