Niš weather in September
September in Niš: warm, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Niš · #14 of 897 destinations to visit in September · comfort 96/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Niš in September
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Niš climate normals — September
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 14°C / 57°F | |
| Rainfall | 33 mm / 1.3 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 70% | 💧 humid |
| Dew point | 13°C / 55°F | |
| Sunshine | 10.2 h/day | |
| Daylight | 12.5 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Niš in September — FAQ
- Is September a good time to visit Niš?
- September in Niš: warm, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Niš on SeasonMap's comfort score (96/100).
- What is the weather like in Niš in September?
- In September, Niš averages a daily high of 24.9°C and a low of 14°C, with about 33 mm of rain over roughly 5.8 rainy days.
- What is the air quality in Niš in September?
- Niš has a mean US Air Quality Index of about 38 in September.