The best time to visit Zurich is June through September, when average highs climb into the comfortable low-to-mid twenties and sunshine is at its most generous — June averages 23.6°C with 11.8 hours of sun a day, and September a milder 20.1°C with 13 rain days. July and August form peak season, when school holidays fill the lakeshore and prices rise, so June and September offer the same warmth with a calmer feel. Winter is the quiet, low season: January sits at 4.4°C with just 4.8 hours of sun and 14 rain days.
Best months JuneJulyAugustSeptember
Zurich month by month
Average highs and lows (°C), 2016–2025. Highlighted bars are the best months.
| Month | High | Low | Rain days | Sun / day |
|---|---|---|---|---|
| January | 4.4 °C | -1.7 °C | 14 | 4.8 h |
| February | 7.6 °C | -0.4 °C | 12 | 6.1 h |
| March | 10.9 °C | 1.3 °C | 13 | 8 h |
| April | 14.7 °C | 4.3 °C | 13 | 9.8 h |
| May | 18 °C | 8.6 °C | 18 | 9.9 h |
| June | 23.6 °C | 13.8 °C | 15 | 11.8 h |
| July | 24.8 °C | 15.4 °C | 16 | 12 h |
| August | 24.7 °C | 15.4 °C | 12 | 10.7 h |
| September | 20.1 °C | 11.8 °C | 13 | 9.3 h |
| October | 15.2 °C | 7.5 °C | 12 | 7.1 h |
| November | 8.4 °C | 2.6 °C | 13 | 5 h |
| December | 5.1 °C | -0.3 °C | 14 | 4.2 h |
How the months are picked.A month qualifies when its average high sits in the comfortable 20–28 °C band (scored down towards 9 °C and 37 °C), rain days are few and sunshine hours are high — at least 78 % of the city's best-scoring month. July and August are then set aside as peak season (school-holiday crowds and prices) whenever at least three other months qualify; where summer is the only comfortable window they stay. Figures are ten-year averages (2016-01-01 to 2025-12-31) from ERA5 reanalysis data via Open-Meteo (CC BY 4.0) for the city centre coordinates.
When to go, and what to expect
Spring (Mar–May)
Good for blossoms and fewer crowds, but pack for showers.
Summer (Jun–Aug)
Ideal for lake swims and long evenings; book ahead.
Autumn (Sep–Nov)
September is a sweet spot; October pleasant, November grey.
Winter (Dec–Feb)
Worth it for markets and day trips to the Alps, not lake weather.
Notable events
- April
- Sechseläuten spring festival (burning of the Böögg)
- Late August to early September
- Zürcher Theater Spektakel
- August
- Street Parade (electronic music parade)
- Late November to December
- Christmas markets
Frequently asked
Is Zurich too hot in August?
No. August highs average 24.7°C with 12 rain days, warm and pleasant rather than sweltering, and the lake is perfect for swimming.
What is the rainiest month in Zurich?
May is the wettest, with 18 rain days, closely followed by July with 16. Summer showers are common but sunshine stays high.
Is winter worth visiting Zurich?
For Christmas markets and Alpine day trips, yes, but expect cold, dim days — January highs of 4.4°C and just 4.8 hours of sunshine.
Know when to go? Now decide where to stay — our Zurich area guide →
Areas of Zurich
Best time to visit near here
Sources
- Open-Meteo historical weather API — monthly climate normals, 2016–2025 (CC BY 4.0)
- ERA5 reanalysis (ECMWF / Copernicus) — the underlying temperature, precipitation and sunshine data
- ReasonStay methodology — how the best months are computed and checked
An independent guide to Zurich — honest, verified, no invented data. Climate figures: ERA5 via Open-Meteo, 2016–2025 averages; the best months are computed from them, not opinion.