Greece in September: where is it warmest?
In September, Kastellorizo is the warmest place with 29 °C by day, Patmos the coolest with 23 °C. 62 of 62 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Kastellorizo | 100 | 29° | 27° | 10 h | 2 |
| Marathon | 99 | 29° | 24° | 9 h | 3 |
| Salamis Island | 98 | 29° | 25° | 8 h | 3 |
| Árgos | 97 | 29° | 25° | 8 h | 4 |
| Nafplio | 97 | 29° | 25° | 8 h | 4 |
| Sparta | 79 | 29° | – | 8 h | 5 |
| Heraklion, Crete | 100 | 28° | 25° | 9 h | 3 |
| Rethymno | 100 | 28° | 25° | 9 h | 4 |
| Agios Nikolaos | 98 | 28° | 25° | 9 h | 3 |
| Malia | 98 | 28° | 25° | 9 h | 3 |
| Poros | 98 | 28° | 25° | 8 h | 4 |
| Spetses | 98 | 28° | 25° | 8 h | 4 |
| Kalamata | 95 | 28° | 26° | 8 h | 5 |
| Chalkída | 94 | 28° | 25° | 8 h | 6 |
| Thebes | 91 | 28° | – | 8 h | 5 |
| Athens | 89 | 28° | 25° | 8 h | 3 |
| Piraeus | 89 | 28° | 25° | 8 h | 3 |
| Mycenae | 87 | 28° | – | 8 h | 4 |
| Rhodes Town | 100 | 27° | 26° | 10 h | 1 |
| Lindos, Rhodes | 100 | 27° | 26° | 10 h | 1 |
| Symi | 100 | 27° | 26° | 10 h | 1 |
| Ierapetra | 100 | 27° | 26° | 9 h | 3 |
| Ýdra | 98 | 27° | 25° | 8 h | 4 |
| Corinth | 97 | 27° | 25° | 8 h | 3 |
| Pella | 96 | 27° | – | 9 h | 5 |
| Pylos | 95 | 27° | 26° | 8 h | 5 |
| Larissa | 94 | 27° | – | 7 h | 4 |
| Zakynthos Town (Zante) | 93 | 27° | 25° | 8 h | 7 |
| Olympia | 88 | 27° | – | 8 h | 8 |
| Chania, Crete | 99 | 26° | 25° | 9 h | 4 |
| Thessaloniki | 96 | 26° | 25° | 9 h | 5 |
| Mytilene | 95 | 26° | 23° | 9 h | 3 |
| Volos | 93 | 26° | 25° | 8 h | 6 |
| Lefkada | 92 | 26° | 25° | 8 h | 7 |
| Parga | 92 | 26° | 25° | 8 h | 7 |
| Preveza | 92 | 26° | 25° | 8 h | 7 |
| Patras | 91 | 26° | 25° | 8 h | 6 |
| Kos Town | 100 | 25° | 25° | 9 h | 2 |
| Kimolos | 97 | 25° | 24° | 9 h | 2 |
| Argostoli, Kefalonia | 94 | 25° | 25° | 8 h | 6 |
| Delphi | 92 | 25° | 25° | 8 h | 6 |
| Kavala | 92 | 25° | 24° | 8 h | 6 |
| Mystras | 91 | 25° | – | 8 h | 6 |
| Skiathos | 90 | 25° | 25° | 8 h | 6 |
| Corfu Town | 88 | 25° | 25° | 8 h | 9 |
| Ioannina | 83 | 25° | – | 7 h | 9 |
| Oia | 96 | 24° | 24° | 9 h | 1 |
| Parikia, Paros | 95 | 24° | 24° | 9 h | 1 |
| Milos | 95 | 24° | 24° | 9 h | 2 |
| Naxos | 94 | 24° | 23° | 10 h | 1 |
| Tinos | 94 | 24° | 24° | 10 h | 1 |
| Astypalaia | 94 | 24° | 24° | 10 h | 1 |
| Mykonos | 93 | 24° | 23° | 10 h | 1 |
| Andros | 93 | 24° | 24° | 9 h | 2 |
| Fira, Santorini | 92 | 24° | 24° | 9 h | 1 |
| Syros | 92 | 24° | 24° | 9 h | 1 |
| Ios | 92 | 24° | 24° | 9 h | 1 |
| Scyros | 89 | 24° | 23° | 9 h | 3 |
| Kallithea, Halkidiki | 85 | 24° | 25° | 7 h | 7 |
| Skopelos | 85 | 24° | 25° | 8 h | 6 |
| Amorgos | 86 | 23° | 24° | 9 h | 1 |
| Patmos | 84 | 23° | 23° | 10 h | 1 |
Greece in September: quick answers
Greece in September: where is it warmest?
The warmest places in September are Kastellorizo (29 °C), Marathon (29 °C) and Salamis Island (29 °C).
Greece in September: where is the sea warmest?
The sea is warmest at Kastellorizo (27 °C), Kalamata (26 °C) and Rhodes Town (26 °C).
Greece in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Kastellorizo, Heraklion, Crete and Rethymno.
Greece month by month
Greece: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences