Athens, Greece is most comfortable in January, February, March. The toughest month for heat is July (comfort 0/100). In August, daytime highs average 33.3°C (feels like 33.7°C) with 28.6 days over 30°C and 30.2 tropical nights.
| Month | Avg high | Avg low | Feels like | Days ≥30°C | Days ≥35°C | Nights ≥20°C | Comfort |
|---|---|---|---|---|---|---|---|
| January | 13.3° | 6.4° | 11.1° | 0 | 0 | 0 | 100 |
| February | 13.5° | 6.3° | 11° | 0 | 0 | 0 | 100 |
| March | 15.8° | 7.9° | 13.6° | 0 | 0 | 0 | 100 |
| April | 20.2° | 11.3° | 18.7° | 0 | 0 | 0 | 100 |
| May | 25.2° | 16° | 24.6° | 2.4 | 0 | 1.6 | 92 |
| June | 31.1° | 21.3° | 31.8° | 18 | 4.8 | 20.2 | 3 |
| July | 34.9° | 24.3° | 35.2° | 29.6 | 16 | 30 | 0 |
| August | 33.3° | 23.6° | 33.7° | 28.6 | 6.4 | 30.2 | 0 |
| September | 28.7° | 19.7° | 28.6° | 11 | 0.4 | 15 | 46 |
| October | 23.3° | 15° | 22.3° | 0.4 | 0 | 1.4 | 98 |
| November | 19.2° | 11.8° | 17.9° | 0 | 0 | 0 | 100 |
| December | 15° | 8.6° | 13.5° | 0 | 0 | 0 | 100 |
Destinations scoring 75+ for August heat comfort:
For most visitors, yes. August daytime highs in Athens average 33.3°C (feels like 33.7°C), with 28.6 days over 30°C and 30.2 tropical nights when it stays above 20°C after dark. Consider January or February instead.
Based on 5 years of climate data, the most comfortable months in Athens are January, February, March. The toughest month for heat is July, scoring 0/100 on our heat-comfort index.
In August, nights in Athens average a low of 23.6°C, with 30.2 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.