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Greece in September: Warm Sea, Fewer Crowds, Best Month?
Greece in September: about 29°C, sea around 24°C, crowds thinning after the first weeks, full ferry schedules.
By the iLoveGreece editorial team · Last reviewed 2026-11
Quick answer
September is many travelers' favourite month. Days are about 27–29°C, the sea is at its warmest of the year (about 24°C), and crowds and prices ease, especially after mid-month. Ferries still run summer timetables. Winds can still blow, and the first rain may appear late in the month.
At a glance
| Athens | Crete | Cyclades | |
|---|---|---|---|
| Daytime high | ≈29°C | ≈27°C | ≈25°C |
| Sea | — | ≈24°C | ≈24°C |
| Rainy days | ≈2 | ≈2 | ≈1 |
What to know
- Excellent for beaches plus sightseeing.
- Early September is still busy; the second half is calmer.
- Grape harvest season on Santorini, Crete and the mainland.
- Most businesses stay open until October.
FAQ
Is September a good month for Greece?
Yes: warm sea, settled weather and fewer people than August.
Is the sea warm in September?
Yes, about 23–25°C, often warmer than June.
Related guides
- Greece in May: Weather, Sea Temperature and Crowds
- Greece in June: Weather, Sea and How Busy It Gets
- Santorini in October: Weather, Sea Temperature and Is It Worth It?
- Greece in October: Weather, Swimming and What Closes
- Greece in July: Heat, Wind, Crowds and How to Plan
- Greece in April: Weather, Easter and Which Islands Are Open
Updated 2026-11. General planning guidance. Check with operators and local authorities.