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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Public Journal weather desk. Data from national met services via Open-Meteo.
Check the live forecast above before finalising travel plans—St Lucia’s tropical climate stays warm year-round, though rain and wind vary sharply between the wet and dry seasons. Expect temperatures around 27–31°C, with a cooling breeze along the west coast near Castries and heavier showers inland.
What is the weather in St Lucia like throughout the year?
St Lucia weather year round averages 27°C, but conditions shift noticeably by month. The dry season from December to May brings blue skies and steady trade winds, making this the most popular time for visitors. St Lucia weather October and November sees the tail end of the wet season, with short, heavy downpours and higher humidity. The island’s mountainous interior tends to be cloudier and wetter than the coast—Castries often catches passing showers even on sunny days. For a detailed look at upcoming conditions, check a st lucia weather 14 days or st lucia weather 21 day forecast to plan around any tropical waves.
How reliable are longer St Lucia forecasts?
Because St Lucia sits in the eastern Caribbean, its weather is influenced by Atlantic trade winds and occasional tropical systems. While a st lucia weather 14 days outlook gives a general trend, shorter windows—like st lucia weather 14 days or a 10-day forecast—are more trustworthy. For Castries and the western coast, expect morning sun giving way to afternoon cloud and a possible shower; the east side is often drier. If you’re considering st lucia weather november or st lucia weather october, remember that hurricane season technically runs June–November, though direct hits are rare.
Is St Lucia humid?
Yes—humidity is generally high, especially during the wet season from June to November. The trade winds help keep it bearable along the coast, but inland valleys can feel sticky. Light, breathable clothing is recommended year-round.
When is the best time to visit St Lucia?
For the most reliable sunshine and lower humidity, visit between January and April. This is the heart of the dry season. December and May are also good, though you may see more cloud in May. St Lucia weather november can still be unsettled.
Does it rain every day in St Lucia?
Not usually—even in the wet season, rain comes in short bursts, often in the afternoon or overnight. Many mornings are bright and sunny. A st lucia weather year round pattern is frequent sun with occasional tropical showers.
Plan your trip with our UK weather hub or check the 10 day weather forecast UK for comparison if you’re travelling from Britain. For other Caribbean destinations, see Bristol Weather (yes, different climate, but useful for departure planning).