Heraklion weather in September
September in Heraklion: hot, dry, with clean air — an excellent time to visit.
#3 of 12 months in Heraklion · #31 of 604 destinations to visit in September · comfort 92/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Heraklion climate normals — September
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 21°C / 69°F | |
| Feels like (high) | 30°C / 86°F | |
| Rainfall | 17 mm / 0.7 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 69% | 💧 humid |
| Dew point | 17°C / 63°F | |
| Sunshine | 11.3 h/day | |
| Daylight | 12.4 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 44 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Heraklion?
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Heraklion in September — FAQ
- Is September a good time to visit Heraklion?
- September in Heraklion: hot, dry, with clean air — an excellent time to visit. It ranks #3 of 12 months for Heraklion on SeasonMap's comfort score (92/100).
- What is the weather like in Heraklion in September?
- In September, Heraklion averages a daily high of 28.4°C and a low of 20.5°C, with about 17.1 mm of rain over roughly 2.6 rainy days.
- What is the air quality in Heraklion in September?
- Heraklion has a mean US Air Quality Index of about 44 in September.