Verdict: Excellent month
Athens Weather in September
September runs warm in Athens, with daily highs around 29°C (84°F) and nights near 20°C (68°F). Rain is a non-issue, with only ~3 wet days in an average year. Overall, September is one of the best months of the year to be in Athens.
Average high
29°C / 84°F
Average low
20°C / 68°F
Rain days
~3
Precipitation
21 mm
What to pack for Athens in September
- Summer clothes, plus one light layer for air-con and evenings
- High-SPF sunscreen, sunglasses, and a refillable water bottle
- Comfortable walking shoes — every guide on this site assumes you'll use them
September against the rest of the year
Warmest in Athens: Jul (34°C / 93°F) · Coolest: Jan (13°C / 55°F) · Wettest: Dec (~11 rain days)
13°
6°
Jan
14°
6°
Feb
15°
7°
Mar
20°
11°
Apr
25°
16°
May
30°
21°
Jun
34°
24°
Jul
33°
23°
Aug
29°
20°
Sep
24°
15°
Oct
19°
11°
Nov
15°
9°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)