Switzerland in September
September is Switzerland's 9th-best month (rank 9 of 12): its 18 destinations average 60/100, led by Basel at 91 — 22°C and 9 rainy days — while St. Moritz is cooler at 12°C and scores 40.
#9 of 12 months for Switzerland · 18 destinations · updated September 2026 · climate normals from ERA5 reanalysis
🇨🇭 Switzerland, month by month
60/100 in SeptemberWhere in Switzerland in September
Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means September is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.
What's on in Switzerland in September
- Tell open-air theatre · Interlaken · 25 Jul – 5 Sep
- Jungfrau Marathon · Interlaken · 5 Sep
- Knabenschiessen · Zürich · 12–14 Sep
- Menuhin Festival · Gstaad · 15 Jul – 5 Sep (usually)
- Country Night Gstaad · Gstaad · 8–16 Sep (usually)
- Athletissima · Lausanne · 1 Jul – 5 Sep (usually)
- Lucerne Festival · Lucerne · 10 Aug – 15 Sep (usually)
Seasons in force
Peak crowds at 1 of Switzerland's 13 well-known places this month.