Zurich Weather in September
In September, Zurich averages a high of 19°C (66°F) and a low of 11°C (51°F), from 55 years of daily records (1971–2026).
19°C
Average high
66°F
11°C
Average low
51°F
31°C
Record high
87°F · September 1, 2009
2°C
Record low
36°F · September 17, 1971
What September Is Like in Zurich
- 5 of the 10 warmest Septembers on record in Zurich have come since 2011.
- The coldest September reading, 2°C (36°F) on September 17, 1971, has not been matched in 55 years.
- September in Zurich has become 1.2°C (2.1°F) warmer on average: the 2011–2025 average against 1970–1989.
- The warmest September in the record was 2023; the coldest was 1996.
At least 1 mm of rain falls on 32% of September days, and the month averages 90 mm in total.
Warmest: 2023 (23.9°C)Latest: 2025 (18.9°C)10-year averageLong-run average (19.1°C)
Look Up a Day in September
See the weather in Zurich on any September date, year by year.
Source: NOAA GHCN-Daily, Zuerich/Fluntern (1971–2026). Averages cover 1971–2026. How we compute this