Greece
Greece in September
Where it is warm, dry and good for swimming in Greece in September — compared across the country’s main destinations.
Quick answers
- Where is it warmest in Greece in September?
- Athens is the warmest of the 16 destinations compared, with highs of 29°C (83°F) in September; Alexandroupoli is the coolest at 25°C (77°F).
- Can you swim in the sea in Greece in September?
- Yes, in places: the warmest water is at Rhodes (26°C (79°F)), and 8 of the coastal destinations have a sea of 21 °C or more.
Warmest
29°
Athens
Coolest
25°
Alexandroupoli
Driest
8 mm
Rhodes
Warmest sea
26°
Rhodes
Across Greece, September highs run from 25°C (77°F) (Alexandroupoli) to 29°C (83°F) (Athens). On average it is 3.5 °C (6 °F) cooler than August. Most destinations stay largely dry. Best bets this month: Athens, Heraklion, and Thessaloniki.
Best places in Greece in September
100 
Athens
Attica · Greece
29° / 19° 10 mm Sep
100
Heraklion
Crete · Greece
27° / 20° 14 mm Sep
95
Thessaloniki
Central Macedonia · Greece
27° / 15° 24 mm Sep
100
Nafplion
Peloponnese · Greece
28° / 17° 17 mm Sep
100
Piraeus
Attica · Greece
28° / 20° 10 mm Sep
100
Rethymno
Crete · Greece
27° / 20° 14 mm Sep
100
Chania
Crete · Greece
27° / 20° 13 mm Sep
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94
Volos
Thessaly · Greece
27° / 17° 24 mm Sep
Weather in September by city
| Place | Day | Night | Rain | Sea | Score |
|---|---|---|---|---|---|
| Athens | 29° | 19° | 10 mm | — | 100 |
| Heraklion | 27° | 20° | 14 mm | 25° | 100 |
| Nafplion | 28° | 17° | 17 mm | — | 100 |
| Piraeus | 28° | 20° | 10 mm | 25° | 100 |
| Chania | 27° | 20° | 13 mm | — | 100 |
| Rhodes | 28° | 21° | 8 mm | 26° | 100 |
| Rethymno | 27° | 20° | 14 mm | 25° | 100 |
| Hersonissos | 27° | 20° | 17 mm | 25° | 100 |
| Ierapetra | 29° | 21° | 16 mm | — | 100 |
| Pátrai | 29° | 16° | 29 mm | — | 99 |
| Kavala | 25° | 16° | 22 mm | 24° | 98 |
| Alexandroupoli | 25° | 15° | 25 mm | 23° | 98 |
| Thessaloniki | 27° | 15° | 24 mm | — | 95 |
| Volos | 27° | 17° | 24 mm | — | 94 |
| Corfu | 28° | 17° | 69 mm | 24° | 93 |
| Larissa | 28° | 15° | 25 mm | — | 86 |
Festivals in Greece in September
- Drama International Short Film Festival Film festival
- Xanthi Old Town Festival Culture festival of Xanthi city, Greece
Frequently asked questions
What is the weather like in Greece in September?
Average daytime highs range from 25° in Alexandroupoli to 29° in Athens.
Can you swim in Greece in September?
Yes — the sea is warmest around Rhodes at about 26°.