Saint Lucia
Weather locations in Saint Lucia
Choose a location in Saint Lucia to view its available forecast products.
Saint Lucia illustrated weather map
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Only locations with a verified coordinate are marked. The complete location list is below.
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Climate of Saint Lucia
Country climate guideSaint Lucia is a small volcanic island in the Lesser Antilles, laid out along a north-south ridge and ringed by beaches on both coasts. The trade winds blow across it continuously, dropping rain on the windward eastern slopes and leaving the western coast drier. Everything about the island's weather is humid, and the trade winds keep the heat from ever becoming stifling.
Main climate types
Almost the whole island is classified as tropical rainforest, with a somewhat drier tropical wet and dry variant on the sheltered western coastal strip. The highest rainfall falls on the central ridge and the northern end, where the island's highest point, Quillan, rises to about 950 metres. Cloud forest forms on the ridge in the wet season, when fog and drizzle can envelop the roads for hours. Tropical cyclones pass through the southern Antilles between July and October.
Temperatures
Castries, on the west coast, averages about 25 °C in January and about 26 °C in July, and readings rarely go far from that. The difference between the hottest and coldest month is only about three degrees, The interior is cooler and breezier; on the ridge the temperature drops several degrees and the wind can be strong. Humidity is high at all times, and heat is felt as much through it as through the thermometer.
Rainfall
Annual totals run from about 1,000 mm on the dry western coast to more than 2,500 mm on the windward slopes and the northern end of the island. Vieux Fort, in the south, is among the wettest stations in the Antilles. There is no true dry season, but January and February are usually the driest months, and showers in the dry season tend to be brief. Rain often arrives as an intense, short downpour followed by clear sky.
When to go
Between January and May the trade winds are steady and the air is at its least oppressive, which is the time most visitors arrive. The period from June to November carries both the heaviest rain and the cyclone risk, which peaks in September; quieter spells do occur, but travel insurance that covers storms is wise. For walking in the rainforests, a wet-season visit is rewarding if the weather is respected.