Zurich, Switzerland is most comfortable in February, March, April. The toughest month for heat is August (comfort 83/100). In August, daytime highs average 24.6°C (feels like 25.9°C) with 4.2 days over 30°C and 0.8 tropical nights.
| Month | Avg high | Avg low | Feels like | Days ≥30°C | Days ≥35°C | Nights ≥20°C | Comfort |
|---|---|---|---|---|---|---|---|
| January | 4.6° | -1.4° | 1.2° | 0 | 0 | 0 | 91 |
| February | 8° | -0.1° | 5° | 0 | 0 | 0 | 100 |
| March | 11.4° | 1.5° | 8.7° | 0 | 0 | 0 | 100 |
| April | 13.9° | 3.7° | 11.9° | 0 | 0 | 0 | 100 |
| May | 18.1° | 8.8° | 17.5° | 0 | 0 | 0 | 100 |
| June | 24.5° | 14.2° | 25.6° | 1.6 | 0 | 0.2 | 88 |
| July | 24.6° | 15.2° | 25.9° | 2.8 | 0 | 0.4 | 85 |
| August | 24.6° | 15.2° | 25.9° | 4.2 | 0 | 0.8 | 83 |
| September | 20.1° | 11.9° | 20.2° | 0 | 0 | 0 | 100 |
| October | 15.8° | 7.9° | 14.9° | 0 | 0 | 0 | 100 |
| November | 8.4° | 2.7° | 6.1° | 0 | 0 | 0 | 100 |
| December | 4.9° | -0.3° | 2.1° | 0 | 0 | 0 | 92 |
No. August daytime highs in Zurich average a comfortable 24.6°C with 4.2 days over 30°C — it's a solid summer choice for avoiding extreme heat.
Based on 5 years of climate data, the most comfortable months in Zurich are February, March, April. The toughest month for heat is August, scoring 83/100 on our heat-comfort index.
In August, nights in Zurich average a low of 15.2°C, with 0.8 tropical nights per month (nights that stay at or above 20°C) — a key factor for sleep quality if your stay has no air conditioning.
Tell us where and when you're going. If a heatwave becomes likely for your dates, we'll email you early — with cooler day-by-day alternatives nearby.