Prague, Czechia is most comfortable in March, April, May. The toughest month for heat is July (comfort 83/100). In August, daytime highs average 25.3°C (feels like 25.2°C) with 6 days over 30°C and 1 tropical nights.
| Month | Avg high | Avg low | Feels like | Days ≥30°C | Days ≥35°C | Nights ≥20°C | Comfort |
|---|---|---|---|---|---|---|---|
| January | 4.4° | -0.9° | 0.1° | 0 | 0 | 0 | 91 |
| February | 6.5° | -0.7° | 2.5° | 0 | 0 | 0 | 96 |
| March | 10.9° | 1.1° | 7.2° | 0 | 0 | 0 | 100 |
| April | 14.1° | 4.1° | 10.7° | 0 | 0 | 0 | 100 |
| May | 19.5° | 9.2° | 17.3° | 0.2 | 0 | 0 | 100 |
| June | 25.4° | 14.4° | 24.9° | 4.8 | 0.2 | 0.6 | 88 |
| July | 26° | 15.7° | 25.4° | 5.2 | 0.4 | 1.4 | 83 |
| August | 25.3° | 15.3° | 25.2° | 6 | 0.4 | 1 | 84 |
| September | 21.2° | 11.7° | 20.1° | 1.6 | 0 | 0.2 | 98 |
| October | 15.7° | 7.3° | 13.5° | 0 | 0 | 0 | 100 |
| November | 7.8° | 1.9° | 4.8° | 0 | 0 | 0 | 100 |
| December | 4.5° | -0.3° | 0.8° | 0 | 0 | 0 | 91 |
No. August daytime highs in Prague average a comfortable 25.3°C with 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 Prague are March, April, May. The toughest month for heat is July, scoring 83/100 on our heat-comfort index.
In August, nights in Prague average a low of 15.3°C, with 1 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.