Beau Fixe
Gros Islet

🇱🇨 Saint Lucia · Caribbean

Gros Islet weather in August

Unfavourable season

Afternoon
29.7 °C
Night
25.8 °C
Sea temperature
29 °C
Rainy days
23 days
Relative humidity
78 %

100% of days reached 25 °C over the last 10 years

📷 Katie Schankula · Pexels

Month by month

MonthAfternoonSeaRainVerdict
January27.3 °C27.3 °C18 daysPossible, with trade-offs
February27.6 °C27.1 °C14 daysPossible, with trade-offs
March28.1 °C27.1 °C16 daysPossible, with trade-offs
April28.9 °C27.5 °C14 daysPossible, with trade-offs
May29.6 °C27.9 °C15 daysPossible, with trade-offs
June29.4 °C28.2 °C21 daysUnfavourable season
July29.2 °C28.5 °C25 daysUnfavourable season
August29.7 °C29 °C23 daysUnfavourable season
September30.3 °C29.6 °C20 daysUnfavourable season
October29.6 °C29.3 °C21 daysUnfavourable season
November28.7 °C28.8 °C20 daysUnfavourable season
December28 °C28 °C18 daysPossible, with trade-offs
Best months :AprilMayFebruary

Before you go

Three things to check once you have picked your dates.

Entry

Entry rules depend on your nationality and change often. Check them before booking.

Official entry requirements ↗

Safety

No specific restrictions

Usual precautions apply.

Official advice updated 10 December 2025

UK Foreign Office

Health

Recommended vaccinations, water quality, mosquitoes: advice depends on the country and the season. Some vaccines need time before departure.

Health advice ↗

Beau Fixe is not a safety or health authority. These notes summarise public advisories and link to their source; only the competent authorities are authoritative. Alert levels: Foreign, Commonwealth & Development Office (gov.uk), Open Government Licence v3.0.

FAQ

Can you swim in Gros Islet in August?

The sea averages 29°C in August — yes, pleasant swimming.

How hot is Gros Islet in August?

Expect 29.7°C in the afternoon and 25.8°C at night, averaged over the last 10 years.

Does it rain a lot in Gros Islet in August?

Around 23 days with rain (≥ 1 mm) in the month — 73% of days.

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