Monthly climate guide
Athens weather in September
Expect hot weather in Athens in September: afternoons reach about 29°C (84°F), while nights drop to around 21°C (69°F). Around 29 mm of rain falls over the month (fairly dry), and skies are mostly sunny. Daytime highs are 3°C cooler than August and 6°C warmer than October.
What stands out in September
- Just 130 km apart, but Athens runs about 4°C warmer than Skiáthos this month.
- Seasonally, September counts as early autumn in Athens.
- It cools down fast from here: October is about 6°C cooler.
- Plan Plaka for the cooler hours — early morning is best.
Avg high
29°C
84°F
Avg low
21°C
69°F
Rainfall
29 mm
fairly dry
Humidity
60%
relative
Sky
19%
cloud · mostly sunny
Athens weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 12°C / 54°F | 7°C / 44°F | 65 mm | 80% | 52% |
| February | 14°C / 56°F | 7°C / 45°F | 66 mm | 81% | 52% |
| March | 16°C / 60°F | 9°C / 47°F | 62 mm | 77% | 47% |
| April | 20°C / 68°F | 11°C / 52°F | 30 mm | 70% | 39% |
| May | 25°C / 77°F | 16°C / 60°F | 21 mm | 63% | 37% |
| June | 30°C / 86°F | 20°C / 69°F | 29 mm | 56% | 21% |
| July | 33°C / 91°F | 23°C / 73°F | 11 mm | 52% | 9% |
| August | 32°C / 90°F | 23°C / 74°F | 10 mm | 54% | 9% |
| September | 29°C / 84°F | 21°C / 69°F | 29 mm | 60% | 19% |
| October | 23°C / 74°F | 16°C / 61°F | 41 mm | 70% | 35% |
| November | 18°C / 65°F | 13°C / 55°F | 61 mm | 77% | 47% |
| December | 14°C / 57°F | 9°C / 47°F | 92 mm | 79% | 50% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- Sunglasses
Is September a good time to visit Athens?
Our Athens guide recommends: April to June or September to October, avoiding the intense heat of July and August.
Visit the Acropolis at opening time (8am) — both the crowds and the heat build quickly through the day.
Best time to visit Athens →Other Greece cities in September
Cite or embed this data
Writing about this destination? Copy a ready-made citation or embed a live widget — free, just keep the link.
Athens weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/greece/athens/september
<a href="https://weathercompare.eu/weather/greece/athens/september">Athens weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/greece/athens" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Athens weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/greece/athens/september">Athens weather in September</a> – WeatherCompare</p>
Athens in September: quick answers
Is September a good time to visit Athens?
September is a reasonable time for Athens: highs around 29°C and about 29 mm of rain, though not one of the three best months.
How warm is Athens in September?
Average highs are about 29°C (84°F) and average lows about 21°C (69°F), based on 10 years of daily data.
Does it rain a lot in Athens in September?
Athens typically gets around 29 mm of rain in September — fairly dry.
When is the best time to visit Athens?
April to June or September to October, avoiding the intense heat of July and August.
Figures are long-term averages for the area around Athens (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.