Castries weather in October
October in Castries: hot, rainy, with clean air — an excellent time to visit.
#11 of 12 months in Castries · #220 of 604 destinations to visit in October · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Castries climate normals — October
| Daytime high | 29°C / 85°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 33°C / 91°F | |
| Rainfall | 125 mm / 4.9 in | 🌧 rainy |
| Rainy days | 21 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 23°C / 74°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 11.8 h | |
| Wind | 21 km/h / 13 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Castries?
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Castries in October — FAQ
- Is October a good time to visit Castries?
- October in Castries: hot, rainy, with clean air — an excellent time to visit. It ranks #11 of 12 months for Castries on SeasonMap's comfort score (82/100).
- What is the weather like in Castries in October?
- In October, Castries averages a daily high of 29.3°C and a low of 25.6°C, with about 124.7 mm of rain over roughly 21 rainy days.
- What is the air quality in Castries in October?
- Castries has a mean US Air Quality Index of about 38 in October.