Mykonos weather in September
September in Mykonos: warm, dry, with clean air — an excellent time to visit.
#4 of 12 months in Mykonos · #227 of 604 destinations to visit in September · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Mykonos climate normals — September
| Daytime high | 25°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 22°C / 72°F | |
| Feels like (high) | 25°C / 77°F | |
| Rainfall | 2 mm / 0.1 in | ☀️ dry |
| Rainy days | 0 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 19°C / 65°F | |
| Sunshine | 11.3 h/day | |
| Daylight | 12.4 h | |
| Wind | 35 km/h / 22 mph | |
| Air quality (US AQI) | 50 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Mykonos?
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Mykonos in September — FAQ
- Is September a good time to visit Mykonos?
- September in Mykonos: warm, dry, with clean air — an excellent time to visit. It ranks #4 of 12 months for Mykonos on SeasonMap's comfort score (84/100).
- What is the weather like in Mykonos in September?
- In September, Mykonos averages a daily high of 24.5°C and a low of 22.1°C, with about 2.1 mm of rain over roughly 0.4 rainy days.
- What is the air quality in Mykonos in September?
- Mykonos has a mean US Air Quality Index of about 50 in September.