Castries in September
6.1out of 10
Possible, with caveats
Warm and comfortable: highs around 30°C. Very wet: about 19 rainy days.
30°CAvg high
26°CAvg low
19Rainy days (104 mm)
12:04 hDaylight
05:56Sunrise · 18:01 Sunset
Why this score
- Warm and comfortable: highs around 30°C
- Very wet: about 19 rainy days
- Rain varies a lot between years (±4.1 days)
What to wear and pack
- T-shirts and light layers
- Shorts or a light skirt
- Rain jacket or compact umbrella
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in September varies a lot between years (±4.1 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 28°C | 24°C | 31 mm | 12 | – | – | 7.5 |
| February | 28°C | 24°C | 21 mm | 9 | – | – | 7.9 |
| March | 28°C | 24°C | 26 mm | 10 | – | – | 7.8 |
| April | 29°C | 24°C | 36 mm | 12 | – | – | 7.5 |
| May | 29°C | 25°C | 46 mm | 12 | – | – | 7.3 |
| June | 29°C | 25°C | 65 mm | 15 | – | – | 6.9 |
| July | 29°C | 25°C | 83 mm | 20 | – | – | 6.2 |
| August | 30°C | 25°C | 99 mm | 21 | – | – | 6.1 |
| September | 30°C | 26°C | 104 mm | 19 | – | – | 6.1 |
| October | 29°C | 25°C | 119 mm | 21 | – | – | 6.0 |
| November | 29°C | 25°C | 102 mm | 19 | – | – | 6.4 |
| December | 28°C | 24°C | 42 mm | 13 | – | – | 7.3 |
Frequently asked questions
How hot is Castries in September?
Daytime highs average 30°C and nights about 26°C.
When is the best time to visit Castries?
The best months are February, March, January, April.