Castries Weather in September

Castries in September sees high daytime temperatures of 26°C (79°F) and nighttime lows of 16°C (61°F). Rainfall is fairly high this month at around 114 mm (4.5 in), so pack a rain jacket to stay dry.

Rainfall in Castries in September

Typically, you can expect about 7 days of rain this month, with 114 mm (4.5 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Castries in September

Daytime highs in Castries in September reach 26°C (79°F), with nights around 16°C (61°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Castries in September

Enjoy a sunny month with about 243 hours of sunshine, the clear skies make Castries even more beautiful.

For Castries itself, May and June generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.