Niš weather in May
May in Niš: warm, a little rain, with clean air — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#1 of 12 months in Niš · #66 of 1413 destinations to visit in May · comfort 93/100 (tier S)
- Days
- 24°C
- Nights
- 11°C
- Wet days
- 13
- Sun
- 10.9 h
- Humidity
- 69%
- Daylight
- 15 h
Traveller notes on Niš in May
Other months in Niš
Forum posters describe an early-spring Niš visit as genuinely unpredictable, with one trip report describing a sunny first day followed immediately by snow on the second. Posters discussing the wider Serbian March pattern cite Belgrade daily highs around 10C, moderately windy, with rain on roughly a quarter to a third of days in a typical month - not especially wet by regional standards, but changeable enough that a visit can span both mild and snowy days. Posters note Niš itself has more of a reputation as a lively summer destination, with its main pedestrian street and outdoor bars really coming alive once the weather warms. Posters generally rate March as a genuinely mixed, still-wintry-at-times month for Niš, with real day-to-day swings worth planning flexibly around.
Forum posters describe September Serbia weather as usually very pleasant with relatively few rainy days, though still worth checking a short-range forecast since conditions can shift. Temperatures hover around the low-to-mid 20sC with warm sun through the day, but posters note evenings turn noticeably chillier as daylight hours shrink through the month. For Nis specifically, visitors describe it as an easy, walkable city with most sights concentrated in a compact historic core, and the river promenade and parks are called out as especially atmospheric to walk in the crisp early-autumn air.
Add your own note from Niš's card on the map.
Niš climate normals — May
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Niš in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsMay Day holidays, City feast of Constantine and Helena, school holidays in 4 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Niš's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherNiš's best weather comes in April, May and September — separate windows, not one continuous season.
May includes City feast of Constantine and Helena.
Best weatherFair weatherToughest weather
What's on in Niš in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Holiday
May Day holidays
1–2 MayNational holidayClosures1 and 2 May are public holidays, and Serbs head out of town for barbecues by rivers, in parks and in the countryside. Offices and many shops close, and city centres are quiet. Source ↗
- Festival
City feast of Constantine and Helena
30 May – 5 Jun · usuallyReligious feastCrowdedNis, Constantine's birthplace, celebrates its patron saints on 3 June with a week of church services, folk ensembles, concerts and sports around the fortress and centre. Source ↗
Nearby, and something's on
Within 300 km of Niš — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Niš?
Niš in May — FAQ
- Is May a good time to visit Niš?
- May 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 (93/100).
- What is the weather like in Niš in May?
- In May, Niš averages a daily high of 23.5°C and a low of 10.6°C, with about 57.9 mm of rain over roughly 12.7 rainy days.
- What is the air quality in Niš in May?
- Niš has a mean US Air Quality Index of about 44 in May.
Within 300 km: Belgrade's The river clubs open around 1 May – 30 Sep, and Kotor's Cruise season on 1 May – 15 Oct.