Zurich · Month comparison

August vs September

September ranks #1 overall vs August at #10. The undersold sweet spot — warm enough for the lake, dry enough for the alps, prices drop from August.

Street Parade crowds along Lake Zurich shoreline

August

#10 of 12 months

Strong option

Street Parade (2nd Saturday) brings 800,000 people — the largest techno festival on earth.

  • ↑Street Parade — 800,000 ravers around the lake, the city's defining single event
  • ↑Swiss National Day fireworks (1 Aug) over the lake — proper alpine spectacle
Lake Zurich and Alps in clear September light

September

#1 of 12 months

Best match

The undersold sweet spot — warm enough for the lake, dry enough for the alps, prices drop from August.

  • ↑20°C and lake still at 20°C through early September — last realistic swim window
  • ↑Knabenschiessen folk festival (2nd weekend) on Albisgüetli — fairground and shooting tradition
FactorAugustSeptember
Weather score
8
9
Value score
2
5
Crowd score
2
5
Events score
10
7
Atmosphere
8
10
Avg high temp24°C20°C
Monthly rain105mm80mm
Daily sunshine8hrs7hrs

August trade-offs

  • ↓Hotel rates at absolute peak Street Parade weekend — CHF 600+ for 4-star
  • ↓Heavy rain still possible — last 105mm month before September relief

September trade-offs

  • ↓Daylight contracting — by month end down to 12 hours
  • ↓Lake temperature drops fast in the last week — pack a wetsuit if swimming end-Sep
See all 12 months for Zurich →August in detail →September in detail →
Scores compare months within Zurich. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →