Geneva, Switzerland is most comfortable in February, March, April. The toughest month for heat is August (comfort 60/100). In August, daytime highs average 26.9°C (feels like 27.4°C) with 9.6 days over 30°C and 3 tropical nights.
| Month | Avg high | Avg low | Feels like | Days ≥30°C | Days ≥35°C | Nights ≥20°C | Comfort |
|---|---|---|---|---|---|---|---|
| January | 5.9° | -0.2° | 2.5° | 0 | 0 | 0 | 95 |
| February | 9° | 1.1° | 6.1° | 0 | 0 | 0 | 100 |
| March | 12° | 3.1° | 9.2° | 0 | 0 | 0 | 100 |
| April | 14.6° | 5.2° | 12.4° | 0 | 0 | 0 | 100 |
| May | 19° | 9.9° | 18.3° | 0.2 | 0 | 0 | 100 |
| June | 25.4° | 15.4° | 26.3° | 4.8 | 0 | 0.6 | 80 |
| July | 26.5° | 16.5° | 27.3° | 6.8 | 1 | 2 | 68 |
| August | 26.9° | 16.8° | 27.4° | 9.6 | 2.4 | 3 | 60 |
| September | 21.1° | 13.1° | 20.9° | 1 | 0 | 0 | 99 |
| October | 16.7° | 9.5° | 15.6° | 0 | 0 | 0 | 100 |
| November | 9.8° | 3.9° | 7.5° | 0 | 0 | 0 | 100 |
| December | 6.5° | 0.8° | 3.8° | 0 | 0 | 0 | 96 |
Destinations scoring 75+ for August heat comfort:
No. August daytime highs in Geneva average a comfortable 26.9°C with 9.6 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 Geneva are February, March, April. The toughest month for heat is August, scoring 60/100 on our heat-comfort index.
In August, nights in Geneva average a low of 16.8°C, with 3 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.