Moscow weather in September
September in Moscow: cool, a little rain, with very humid — a great time to visit.
#5 of 12 months in Moscow · #380 of 604 destinations to visit in September · comfort 75/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Moscow climate normals — September
| Daytime high | 16°C / 60°F | 🙂 cool |
|---|---|---|
| Nighttime low | 8°C / 47°F | |
| Feels like (high) | 13°C / 55°F | |
| Rainfall | 53 mm / 2.1 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 8°C / 46°F | |
| Sunshine | 7.2 h/day | |
| Daylight | 12.7 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 59 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Moscow in September — FAQ
- Is September a good time to visit Moscow?
- September in Moscow: cool, a little rain, with very humid — a great time to visit. It ranks #5 of 12 months for Moscow on SeasonMap's comfort score (75/100).
- What is the weather like in Moscow in September?
- In September, Moscow averages a daily high of 15.7°C and a low of 8.3°C, with about 53.4 mm of rain over roughly 9.6 rainy days.
- What is the air quality in Moscow in September?
- Moscow has a mean US Air Quality Index of about 59 in September.