Athens weather in September
September in Athens: hot, dry, with clean air — an excellent time to visit.
#4 of 12 months in Athens · #125 of 604 destinations to visit in September · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Athens climate normals — September
| Daytime high | 29°C / 84°F | 🥵 hot |
|---|---|---|
| Nighttime low | 20°C / 67°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 11 mm / 0.4 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 62% | 💧 humid |
| Dew point | 16°C / 60°F | |
| Sunshine | 11 h/day | |
| Daylight | 12.4 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 49 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Athens in September — FAQ
- Is September a good time to visit Athens?
- September in Athens: hot, dry, with clean air — an excellent time to visit. It ranks #4 of 12 months for Athens on SeasonMap's comfort score (87/100).
- What is the weather like in Athens in September?
- In September, Athens averages a daily high of 28.8°C and a low of 19.7°C, with about 11.4 mm of rain over roughly 2.8 rainy days.
- What is the air quality in Athens in September?
- Athens has a mean US Air Quality Index of about 49 in September.