Stockholm weather in September
September in Stockholm: cool, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Stockholm · #276 of 604 destinations to visit in September · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Stockholm climate normals — September
| Daytime high | 16°C / 61°F | 🙂 cool |
|---|---|---|
| Nighttime low | 11°C / 52°F | |
| Feels like (high) | 14°C / 57°F | |
| Rainfall | 36 mm / 1.4 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 10°C / 51°F | |
| Sunshine | 8.4 h/day | |
| Daylight | 12.8 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Stockholm in September — FAQ
- Is September a good time to visit Stockholm?
- September in Stockholm: cool, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Stockholm on SeasonMap's comfort score (82/100).
- What is the weather like in Stockholm in September?
- In September, Stockholm averages a daily high of 15.9°C and a low of 11°C, with about 36.3 mm of rain over roughly 8.2 rainy days.
- What is the air quality in Stockholm in September?
- Stockholm has a mean US Air Quality Index of about 37 in September.