Saint Lucia · The Pitons
Soufrière
Sea
29.5°C85.1°F
Air
UV
Bathtub
Above ⁦28°C⁩

Last updated ·

Today, September 13, the sea temperature at Soufrière is 29.5 °C (85 °F). That matches the usual average of 29.8 °C in September. Comfortable for swimming year-round.

Climate · monthly averages

Sea temperature by month

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.

Warmest in September (29.8°C). Coldest in February (26.9°C). Comfortable for swimming year-round.

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
MonthSea · MinSea · AvgSea · MaxAir · MinAir · AvgAir · Max
January26.8°C27.3°C27.8°C24.7°C25.8°C27.1°C
February26.4°C26.9°C27.6°C24.5°C25.6°C27.1°C
March26.6°C27.0°C27.8°C24.7°C26.0°C27.6°C
April27.0°C27.4°C28.2°C25.3°C26.5°C28.0°C
May27.4°C27.9°C28.7°C26.1°C27.3°C28.7°C
June27.7°C28.2°C28.9°C26.3°C27.4°C28.6°C
July28.0°C28.4°C29.0°C26.2°C27.4°C28.6°C
August28.7°C29.2°C29.7°C26.5°C27.7°C28.9°C
September29.4°C29.8°C30.2°C26.8°C28.0°C29.2°C
October28.9°C29.5°C30.1°C26.9°C27.9°C29.1°C
November28.3°C28.8°C29.5°C26.0°C27.0°C28.2°C
December27.5°C28.0°C28.5°C25.3°C26.5°C27.7°C

About Soufrière

On Saint Lucia's west coast, Soufrière sits between The Pitons – twin volcanic plugs of 743 and 798 metres linked by the Piton Mitan ridge and inscribed as a UNESCO World Heritage Site in 2004. Just north of town, Anse Chastanet curves into a cove of dark volcanic sand backed by a reef long known for shore diving, while Marigot Bay shelters further north as a deep, narrow yacht harbour. The sea holds 27 to 29 °C81 to 84 °F year-round, with Hewanorra International about 75 minutes south along the coast road.

Frequently asked questions

Today, September 13, the sea at Soufrière is 29.5 °C (85 °F)85 °F (29.5 °C) – bathtub-warm. The usual September average is 29.8 °C86 °F.

No single number works for everyone, so the scale on this page is only a guide to how the water feels: below 13 °C55 °F icy, 13–18 °C55–64 °F cold, 18–23 °C64–73 °F refreshing, 23–28 °C73–82 °F pleasantly warm and above 28 °C82 °F like a bath. Right now the sea at Soufrière is 29.5 °C85 °F.

Yes – the sea at Soufrière (The Pitons, Saint Lucia) stays swimmable all year. February is the coolest month, averaging 26.9 °C80 °F – ideal for swimming for most people; the warmest is September at 29.8 °C86 °F.

In September, at 29.8 °C86 °F on average. The coolest month is February at 26.9 °C80 °F – still above the 18 °C64 °F swimming line, so there is no off-season for swimming.