Santorini · AutumnMonth summary
Santorini weather in September
✅ Excellent
🌡️ Temperature min / max
22°C – 26°C
🌧 Rainy days
3% of days
☀️ Sunshine
11.5h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
9.1/10
📅 📅 Best month
July (9.9/10)
Quick decision
Should you visit Santorini in September?
✅ Excellent
✅ Yes if: you want to combine beach, sightseeing and hiking — versatile weather (26°C, little rain).
❌ No if: you want to avoid tourist crowds — this is the busiest period.
Our take: September is an excellent time to visit Santorini. 26°C, 11.5h of sunshine — optimal conditions.
By trip type
Santorini in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ✅ Good
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
🎯 Optimal underwater visibility — clear water and ideal diving conditions Autumn in Santorini is often underrated: 26°C, golden light and declining crowds. An interesting window. Rain is virtually absent (3% of days) — ideal for planning without a backup. This is one of the best times of year to visit Santorini.
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All months for Santorini
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 10°C | 14°C | 32% | 1.5 | 8.8h | 6.3/10 |
| ⛅ February | 11°C | 14°C | 24% | 1.6 | 9.2h | 7.0/10 |
| ⛅ March | 12°C | 16°C | 21% | 1.4 | 10.8h | 7.1/10 |
| 🌤️ April | 13°C | 18°C | 13% | 0.4 | 11.7h | 7.6/10 |
| 🌤️ May | 16°C | 21°C | 9% | 0.4 | 12.8h | 8.4/10 |
| ☀️ June | 21°C | 26°C | 4% | 0.2 | 13.3h | 9.5/10 |
| ☀️ July | 23°C | 28°C | 1% | 0.0 | 13.1h | 9.9/10 |
| ☀️ August | 23°C | 28°C | 3% | 0.1 | 12.7h | 9.7/10 |
| ☀️ September | 22°C | 26°C | 3% | 0.2 | 11.5h | 9.1/10 |
| 🌤️ October | 18°C | 22°C | 8% | 0.4 | 10.0h | 8.2/10 |
| 🌤️ November | 15°C | 19°C | 15% | 0.8 | 9.0h | 7.4/10 |
| ⛅ December | 12°C | 16°C | 31% | 1.7 | 8.5h | 7.0/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Santorini averages 26°C, 3% rainy days and 11.5h of sunshine per day. Overall weather score: 9.1/10.
See methodology →
Comparison
September vs July (best month)
The best month is July (score 9.9/10). Difference:
- 🌡️ Max temperature : +2°C
- 🌧 Rainy days : -2%
- ☀️ Sunshine : +1.6h/day
FAQ
FAQ — Santorini in September
Is September a good time to visit Santorini?
September is an excellent time to visit Santorini (score 9.1/10). With 26°C, 11.5h of sunshine and 3% rain, conditions are very favourable.
What to do in Santorini in September?
With 26°C and 11.5h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
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