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Re: February weather St. Lucia Jul 28, 2009, 10:53 PM February is definitely a good time to go to St. Lucia,as you typically have low amount of rainfall during that month. The average temperature should be about 80-85 degrees. If it happens to rain, then you usually get 10 minute showers during the day and after that the sun comes out again.
Average Weather in January in Castries St. Lucia. In Castries, the month of January is characterized by essentially constant daily high temperatures, with daily highs around 83Â°F throughout the month, rarely exceeding 85Â°F or dropping below 81Â°F. Daily low temperatures are around 75Â°F, rarely falling below 72Â°F or exceeding 78Â°F.