Saint-Denis weather in August
August in Saint-Denis: warm, a little rain, with clean air — an excellent time to visit.
#3 of 12 months in Saint-Denis · #121 of 604 destinations to visit in August · comfort 88/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Saint-Denis climate normals — August
| Daytime high | 24°C / 75°F | 🌤 warm |
|---|---|---|
| Nighttime low | 20°C / 67°F | |
| Feels like (high) | 26°C / 79°F | |
| Rainfall | 46 mm / 1.8 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | 17°C / 63°F | |
| Sunshine | 10.5 h/day | |
| Daylight | 11.4 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 45 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Saint-Denis in August — FAQ
- Is August a good time to visit Saint-Denis?
- August in Saint-Denis: warm, a little rain, with clean air — an excellent time to visit. It ranks #3 of 12 months for Saint-Denis on SeasonMap's comfort score (88/100).
- What is the weather like in Saint-Denis in August?
- In August, Saint-Denis averages a daily high of 24°C and a low of 19.6°C, with about 45.8 mm of rain over roughly 10.8 rainy days.
- What is the air quality in Saint-Denis in August?
- Saint-Denis has a mean US Air Quality Index of about 45 in August.