Castries weather in July
July in Castries: hot, rainy, with very humid — an excellent time to visit.
#12 of 12 months in Castries · #259 of 604 destinations to visit in July · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Castries climate normals — July
| Daytime high | 29°C / 84°F | 🥵 hot |
|---|---|---|
| Nighttime low | 25°C / 78°F | |
| Feels like (high) | 32°C / 90°F | |
| Rainfall | 107 mm / 4.2 in | 🌧 rainy |
| Rainy days | 22 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 11.2 h/day | |
| Daylight | 12.9 h | |
| Wind | 25 km/h / 16 mph | |
| Air quality (US AQI) | 58 | 🙂 moderate |
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 July — FAQ
- Is July a good time to visit Castries?
- July in Castries: hot, rainy, with very humid — an excellent time to visit. It ranks #12 of 12 months for Castries on SeasonMap's comfort score (81/100).
- What is the weather like in Castries in July?
- In July, Castries averages a daily high of 29.1°C and a low of 25.3°C, with about 107.2 mm of rain over roughly 22 rainy days.
- What is the air quality in Castries in July?
- Castries has a mean US Air Quality Index of about 58 in July.