Click on a day for an hourly weather forecast
The temperatures in Athens in September are comfortable with low of 14°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Athens during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Athens in September 2025.
If you’re planning to visit Athens in the near future, we highly recommend that you review the 14 day weather forecast for Athens before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -5° | 7 | 10 | 14 | 95 mm | Awful | Athens in January |
| February | 4° / -4° | 7 | 9 | 13 | 121 mm | Awful | Athens in February |
| March | 11° / 1° | 8 | 16 | 7 | 124 mm | Awful | Athens in March |
| April | 17° / 6° | 8 | 20 | 2 | 128 mm | Bad | Athens in April |
| May | 24° / 12° | 10 | 21 | 0 | 153 mm | Good | Athens in May |
| June | 28° / 16° | 8 | 22 | 0 | 140 mm | Good | Athens in June |
| July | 30° / 18° | 8 | 23 | 0 | 139 mm | Ok | Athens in July |
| August | 29° / 17° | 6 | 25 | 0 | 104 mm | Good | Athens in August |
| September | 26° / 14° | 5 | 25 | 0 | 107 mm | Perfect | Athens in September |
| October | 18° / 8° | 6 | 24 | 0 | 97 mm | Good | Athens in October |
| November | 11° / 2° | 5 | 22 | 3 | 87 mm | Bad | Athens in November |
| December | 6° / -1° | 8 | 13 | 10 | 119 mm | Awful | Athens in December |