September · Serbia
Best time to visit Niš in September Weather, crowds & prices
Weather in Niš in September
Average temperature 18°C, 68 mm of rain, about 14 days with 6+ hours of sunshine and 64% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.5/10
Ranked #4 of 12 months
- Avg temp
- 18°C
- Rainfall
- 68 mm
- Humidity
- 64%
- Days with 6h+ sun
- 14
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Niš scores 8.5/10 for sightseeing and cultural travel - an above-average month (#4 of 12). Expect around 18°C, 68 mm of rain, and roughly 14 days with 6+ hours of sunshine this month.
Niš tells Serbia's history through a Roman birthplace, a Byzantine fortress and a sombre concentration-camp memorial.
September ranks 4th of 12 for Niš — one of the best windows
September averages 18°C (65°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 68 mm, so plan one flexible day in three; you still get about 14 days with 6+ hours of sunshine and 12.3 hours of daylight.
A 8.5/10 puts this among the year's best months in Niš (4th of 12); only May scores higher, at 8.9/10.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Niš in September?
- In September, Niš averages 18°C, 68 mm of rain, and about 14 days with 6+ hours of sunshine. Its climate-comfort score is 8.5/10.
- Is September a good time to visit Niš?
- September earns a 8.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Niš in September?
- Expect about 68 mm of rain in September. Average humidity is 64% and there are about 14 days with 6+ hours of sunshine.
Curated in Niš
Tickets & experiences
Things to do in Niš
Niš, Serbia. Live activities and tours from GetYourGuide, matched to this destination.