Castries weather in March
March in Castries: hot, dry, with clean air — one of the best months to visit.
#1 of 12 months in Castries · #68 of 604 destinations to visit in March · comfort 88/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Castries climate normals — March
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 24°C / 74°F | |
| Feels like (high) | 30°C / 86°F | |
| Rainfall | 23 mm / 0.9 in | ☀️ dry |
| Rainy days | 11 days | |
| Humidity | 68% | 💧 humid |
| Dew point | 19°C / 66°F | |
| Sunshine | 11.2 h/day | |
| Daylight | 12.1 h | |
| Wind | 25 km/h / 15 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 March — FAQ
- Is March a good time to visit Castries?
- March in Castries: hot, dry, with clean air — one of the best months to visit. It ranks #1 of 12 months for Castries on SeasonMap's comfort score (88/100).
- What is the weather like in Castries in March?
- In March, Castries averages a daily high of 28.1°C and a low of 23.6°C, with about 23.2 mm of rain over roughly 10.6 rainy days.
- What is the air quality in Castries in March?
- Castries has a mean US Air Quality Index of about 38 in March.