Castries weather in September
Hot and humid, with regular rainfall. Average highs of 30°C and lows of 26°C, with around 19 rainy days expected throughout the month.
While September isn't our top-rated month for Castries, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
30°C
Average low
26°C
Rainy days
19 days
Best months to visit
February
What to do in Castries in September
Whatever the weather, Castries rewards curious visitors. Here are some of the best ways to spend your time:
Piton hiking and volcano viewing from multiple angles
Diamond Falls and mineral baths exploration
Sulfur springs bathing in naturally heated pools
Rainforest zip-lining and canopy walks
Snorkeling and diving at numerous reef and wall sites
Local market tours and Creole cooking classes
What to pack for September
Light breathable clothing, high-SPF sunscreen, a wide-brimmed hat, and a reusable water bottle are essential. Pack sandals and at least one light layer for air-conditioned interiors.
Browse other months
January
27C
Warm and pleasant, with regular rainfall.
Recommended
February
27C
Warm and pleasant, with some rainy days.
March
28C
Warm and pleasant, with regular rainfall.
April
29C
Warm and pleasant, with some rainy days.
May
29C
Warm and pleasant, with some rainy days.
June
29C
Warm and pleasant, with regular rainfall.
July
29C
Warm and pleasant, with frequent heavy rain.
August
29C
Warm and pleasant, with frequent heavy rain.
September (you are here)
30C
Hot and humid, with regular rainfall.
October
29C
Warm and pleasant, with frequent heavy rain.
November
28C
Warm and pleasant, with frequent heavy rain.
December
28C
Warm and pleasant, with regular rainfall.
Book your September trip to Castries
Find hotels, tours and experiences for the perfect escape.
