Weather in Athens in August
Greece · 20-year averages, August
A good month. August is a solid month to be in Athens. Highs average 32.8 °C, lows 23.5 °C, and rain falls on 2 days — nothing in the month is working against you.
August ranks 8 of 12 in Athens: past the worst of the year but short of May, which is the month to book if the dates are open.
Rain falls on only 2 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 32.8 °C days and 23.5 °C nights; the spread matters more here than any single number.
What the averages hide
Averages flatten a month, and this one hides a few things: 5 days clear 35 °C, so a serious heatwave is normal rather than notable. Across the twenty years measured, the hottest August day reached 41.1 °C and the coldest night fell to 19.6 °C.
This is the volatile part. August rainfall has ranged from 0 mm to 41 mm across the twenty years measured — a 41 mm spread around an average of 8 mm. The average is real but almost no individual August looks like it, so treat the figure as the middle of a wide range rather than a forecast.
Wind is light at 13.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 53%.
How August sits in the year
Temperatures hold steady either side: 32.9 °C in July, 32.8 here, 28.9 in September. Nothing about the timing within the month matters much.
Daylight in August
13.7 hours of daylight, losing 1 hours across the month. That is between Athens's extremes of 14.8 and 9.6 hours, so days are long enough not to constrain the plan.
An inland climate
With no coast nearby, the year swings a fair way — 25.7 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.
How busy it gets
Shoulder. The value months — prices ease off and you get the place closer to itself.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
August in Athens versus nearby
If Athens is one option among several, the nearby comparison is worth making. Volos is a better bet in August — 4 °C cooler, 2 days more rain. Kalamata is close enough to be a coin toss — within a degree on temperature, the same number of rain days.
So: August is a compromise. May is 21 points better and is what Athens is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.
Every month in Athens
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 12.7 | 7.2 | 12 | 66 | 81 | 9.8 | 55 |
| February | 13.5 | 7.3 | 10 | 58 | 81 | 10.8 | 60 |
| March | 16.2 | 8.9 | 8 | 53 | 77 | 11.9 | 74 |
| April | 19.7 | 11.3 | 6 | 30 | 71 | 13.1 | 88 |
| May | 25.4 | 15.8 | 5 | 21 | 62 | 14.2 | 92 |
| June | 30.3 | 20.6 | 4 | 19 | 55 | 14.8 | 79 |
| July | 32.9 | 23.3 | 2 | 11 | 51 | 14.6 | 70 |
| August | 32.8 | 23.5 | 2 | 8 | 53 | 13.7 | 71 |
| September | 28.9 | 20.5 | 5 | 29 | 61 | 12.5 | 82 |
| October | 23.7 | 16.5 | 6 | 49 | 71 | 11.3 | 89 |
| November | 18.7 | 12.7 | 9 | 69 | 78 | 10.2 | 79 |
| December | 14.2 | 9 | 10 | 86 | 81 | 9.6 | 61 |
See all twelve months in Athens, or where else to go in August.
Planning the rest of the trip
- Flight time to Athens how long you are actually in the air
- Athens time zone and the difference from home
- Days until your trip count down to the departure date