Warsaw, Poland is most comfortable in March, April, May. The toughest month for heat is July (comfort 83/100). In August, daytime highs average 24.9°C (feels like 24.9°C) with 4.6 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 | 2.9° | -1.5° | -1.4° | 0 | 0 | 0 | 87 |
| February | 4.7° | -1.7° | 0.5° | 0 | 0 | 0 | 92 |
| March | 9.5° | 0.5° | 5.6° | 0 | 0 | 0 | 100 |
| April | 13.6° | 4.4° | 10.4° | 0 | 0 | 0 | 100 |
| May | 18.9° | 8.6° | 16.5° | 0 | 0 | 0 | 100 |
| June | 24.4° | 14° | 23.8° | 2.8 | 0 | 0.6 | 96 |
| July | 25.7° | 16.1° | 25.5° | 5 | 0.2 | 1.6 | 83 |
| August | 24.9° | 15.3° | 24.9° | 4.6 | 0 | 1 | 88 |
| September | 20.6° | 11.5° | 19.1° | 0.2 | 0 | 0 | 100 |
| October | 14.1° | 6.7° | 11.5° | 0 | 0 | 0 | 100 |
| November | 6.7° | 2.1° | 3.4° | 0 | 0 | 0 | 97 |
| December | 3.1° | -0.9° | -0.8° | 0 | 0 | 0 | 88 |
No. August daytime highs in Warsaw average a comfortable 24.9°C with 4.6 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 Warsaw are March, April, May. The toughest month for heat is July, scoring 83/100 on our heat-comfort index.
In August, nights in Warsaw 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.