Castries weather in January
January in Castries: warm, dry, with clean air — an excellent time to visit.
#3 of 12 months in Castries · #59 of 604 destinations to visit in January · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Castries climate normals — January
| Daytime high | 27°C / 81°F | 🌤 warm |
|---|---|---|
| Nighttime low | 24°C / 74°F | |
| Feels like (high) | 28°C / 82°F | |
| Rainfall | 30 mm / 1.2 in | ☀️ dry |
| Rainy days | 14 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 19°C / 67°F | |
| Sunshine | 10.5 h/day | |
| Daylight | 11.4 h | |
| Wind | 24 km/h / 15 mph | |
| Air quality (US AQI) | 45 | 🍃 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 January — FAQ
- Is January a good time to visit Castries?
- January in Castries: warm, dry, with clean air — an excellent time to visit. It ranks #3 of 12 months for Castries on SeasonMap's comfort score (87/100).
- What is the weather like in Castries in January?
- In January, Castries averages a daily high of 27.4°C and a low of 23.6°C, with about 29.6 mm of rain over roughly 14.4 rainy days.
- What is the air quality in Castries in January?
- Castries has a mean US Air Quality Index of about 45 in January.