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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Focus Hub Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
For a September holiday to Greece, plan for hot, sunny days and warm seas, especially in the first half of the month, though brief thunderstorms can occur. The live forecast above shows current conditions for Athens, the main gateway.
What is the typical weather in Greece during September?
September is one of the best months to visit, offering a blend of strong summer heat and early autumn calm. Average highs range from 28°C to 32°C, dropping to 18°C–22°C at night.
- Athens & mainland: Daytime temperatures often reach 30°C, with clear skies and low humidity.
- Greek Islands (Santorini, Mykonos, Crete): Sea breezes keep it pleasant; water temperatures sit around 24°C–26°C, ideal for swimming.
- Northern Greece (Thessaloniki): Slightly cooler, averaging 26°C–28°C, with more chance of isolated showers later in the month.
- Precipitation: Rainfall is low, but short afternoon thunderstorms become more common from mid-September onward.
Is September a good time for island hopping or city tours?
Yes, the weather supports both beach and sightseeing plans without the July–August crowds and extreme heat. The meltemi wind eases, making ferry trips more reliable.
- Santorini: Expect 27°C–30°C; fewer tourists means better sunset views from Oia.
- Athens: Comfortable for exploring the Acropolis and Plaka, though carry a light jacket for evenings.
- Crete & Rhodes: Still very warm, perfect for coastal walks and watersports.
What is the weather in Greece in September and October like?
September stays hot and sunny (28°C–32°C), while October cools to 20°C–25°C with more rain and wind. Early autumn is great for islands; late autumn suits city breaks like Athens.
Is the weather in Greece in September suitable for a Santorini trip?
Yes. Santorini’s September weather averages 27°C–30°C with minimal rain and calm seas. It is ideal for hiking, dining outdoors, and swimming, with far fewer crowds than August.
What is the Athens weather in September according to AccuWeather?
Athens in September typically sees daytime highs near 30°C and lows around 20°C, with mostly clear skies and low humidity. The chance of rain increases slightly in the last week.
For more seasonal guides, visit our Australia weather hub or see specifics for the capital at Athens Weather.