#1Hot
Skala
- Day
- 29.6°C
- Sea
- 25.4°C
- Sun
- 10.0h
- Rain days
- 3
Your September weather guide
Weather in Greece in September
Yes - September is a good month for Greece if you want warm days and a sea that still feels inviting. Country averages of 26°C by day and 25°C in the water favour swimming and spending time outdoors, while 4 rainy days suggest rain is more likely to interrupt plans than dominate them. The main choice is how much heat you want: some destinations remain hot enough to make shade important at midday.
Long-term climate averages, not a forecast · 1991-2020
- Average daytime high
- 26.0°Cacross 44 destinations
- Average night-time low
- 21.1°Cafter dark
- Sea temperature
- 24.9°Cwarm enough to swim
- Rainy days
- 4days1 mm or more
Greece, month by month
Turn up the warmth
Warmest places in Greece in September
Ranked by average daytime high. The full comparison is in the table below.
#2Hot
Sissi
- Day
- 28.8°C
- Sea
- 24.9°C
- Sun
- 10.3h
- Rain days
- 3
#3Hot
Stalis
- Day
- 28.8°C
- Sea
- 24.9°C
- Sun
- 10.3h
- Rain days
- 3
#4Hot
Hersonissos
- Day
- 28.7°C
- Sea
- 24.9°C
- Sun
- 10.3h
- Rain days
- 3
#5Hot
Koutouloufari
- Day
- 28.7°C
- Sea
- 24.9°C
- Sun
- 10.3h
- Rain days
- 3
#6Hot
Kiotari
- Day
- 28.4°C
- Sea
- 26.3°C
- Sun
- 11.3h
- Rain days
- 1
Greece destinations ranked for September
All 44 places we track in Greece, ordered by daytime high.
Scroll sideways for more weather, down for more places. Click a heading to sort.
| # | Destination | ||||||
|---|---|---|---|---|---|---|---|
| 1 | Skala | 29.6°C | 19.2°C | 25.4°C | 10.0 h | 3 | 3 h 48 min |
| 2 | Sissi | 28.8°C | 21.0°C | 24.9°C | 10.3 h | 3 | 4 h 6 min |
| 3 | Stalis | 28.8°C | 20.9°C | 24.9°C | 10.3 h | 3 | 4 h 6 min |
| 4 | Hersonissos | 28.7°C | 20.3°C | 24.9°C | 10.3 h | 3 | 4 h 6 min |
| 5 | Koutouloufari | 28.7°C | 20.3°C | 24.9°C | 10.3 h | 3 | 4 h 6 min |
| 6 | Kiotari | 28.4°C | 22.6°C | 26.3°C | 11.3 h | 1 | 4 h 12 min |
| 7 | Crete | 28.3°C | 20.0°C | 24.9°C | 10.2 h | 3 | 4 h 6 min |
| 8 | Lindos | 28.3°C | 22.5°C | 26.3°C | 11.3 h | 1 | 4 h 12 min |
| 9 | Athens | 28.2°C | 18.9°C | 25.2°C | 9.7 h | 3 | 3 h 42 min |
| 10 | Kalamaki | 28.1°C | 19.9°C | 25.2°C | 9.7 h | 3 | 3 h 42 min |
| 11 | Elounda | 28.1°C | 21.4°C | 25.0°C | 10.4 h | 3 | 4 h 6 min |
| 12 | Gouves | 28.1°C | 19.7°C | 24.9°C | 10.1 h | 4 | 4 h 6 min |
| 13 | Pefkos | 27.8°C | 17.4°C | 24.3°C | 9.7 h | 3 | 3 h 42 min |
| 14 | Kolymbia | 27.7°C | 23.2°C | 26.3°C | 11.3 h | 1 | 4 h 12 min |
| 15 | Faliraki | 27.0°C | 23.5°C | 26.3°C | 11.3 h | 1 | 4 h 12 min |
| 16 | Ixia | 27.0°C | 23.5°C | 26.1°C | 11.3 h | 1 | 4 h 12 min |
| 17 | Rhodes | 26.8°C | 23.3°C | 26.2°C | 11.3 h | 1 | 4 h 12 min |
| 18 | Rhodes Town | 26.8°C | 23.3°C | 26.2°C | 11.3 h | 1 | 4 h 12 min |
| 19 | Kavos | 26.2°C | 19.6°C | 24.7°C | 8.2 h | 7 | 3 h 18 min |
| 20 | Kalives | 25.6°C | 18.6°C | 24.6°C | 8.2 h | 6 | 3 h 30 min |
| 21 | Chania | 25.5°C | 21.1°C | 24.9°C | 10.3 h | 4 | 4 h |
| 22 | Laganas | 25.5°C | 22.2°C | 25.2°C | 9.2 h | 6 | 3 h 30 min |
| 23 | Zante | 25.4°C | 22.2°C | 25.2°C | 9.2 h | 6 | 3 h 30 min |
| 24 | Zakynthos Town | 25.4°C | 22.2°C | 25.2°C | 9.2 h | 6 | 3 h 30 min |
| 25 | Kos | 25.3°C | 22.5°C | 24.5°C | 11.1 h | 2 | 4 h 6 min |
| 26 | Parga | 25.3°C | 19.2°C | 24.7°C | 8.3 h | 7 | 3 h 18 min |
| 27 | Kefalonia | 25.2°C | 22.2°C | 25.0°C | 8.9 h | 6 | 3 h 30 min |
| 28 | Lassi | 25.2°C | 22.2°C | 25.0°C | 8.9 h | 6 | 3 h 30 min |
| 29 | Kardamena | 25.1°C | 22.5°C | 24.5°C | 11.2 h | 2 | 4 h 6 min |
| 30 | Halkidiki | 24.5°C | 19.7°C | 24.5°C | 8.3 h | 6 | 3 h 30 min |
| 31 | Roda | 24.5°C | 21.2°C | 24.3°C | 8.1 h | 8 | 3 h 12 min |
| 32 | Kefalos | 24.5°C | 21.9°C | 24.3°C | 11.2 h | 1 | 4 h 6 min |
| 33 | Corfu | 24.4°C | 20.6°C | 24.6°C | 8.1 h | 8 | 3 h 18 min |
| 34 | Naxos | 24.4°C | 21.7°C | 23.4°C | 10.8 h | 1 | 3 h 54 min |
| 35 | Mykonos | 24.3°C | 21.5°C | 23.5°C | 10.7 h | 1 | 3 h 54 min |
| 36 | Thassos | 24.0°C | 19.2°C | 23.7°C | 8.4 h | 5 | 3 h 30 min |
| 37 | Afitos | 24.0°C | 20.2°C | 24.5°C | 8.3 h | 6 | 3 h 30 min |
| 38 | Sani | 24.0°C | 20.3°C | 24.5°C | 8.3 h | 6 | 3 h 30 min |
| 39 | Paxos | 23.9°C | 21.1°C | 24.7°C | 8.5 h | 7 | 3 h 18 min |
| 40 | Skiathos | 23.8°C | 21.8°C | 24.4°C | 9.0 h | 5 | 3 h 36 min |
| 41 | Skiathos Town | 23.8°C | 21.8°C | 24.4°C | 9.0 h | 5 | 3 h 36 min |
| 42 | Sidari | 23.8°C | 20.4°C | 24.2°C | 8.1 h | 8 | 3 h 12 min |
| 43 | Santorini | 23.7°C | 20.6°C | 24.0°C | 11.0 h | 1 | 4 h |
| 44 | Alonissos | 23.6°C | 20.7°C | 24.2°C | 9.2 h | 4 | 3 h 36 min |
44 destinations shownClimate averages, not a forecast.
September climate overview
Daytime highs across Greece in September run from 23.6°C (Alonissos) to 29.6°C (Skala). In Skala about 92% of September days reach 25°C. Nights average 21.1°C; the coldest 10% of nights in Alonissos fall to 18°C or below.
Rainfall in September
Expect around 4 rainy days (1 mm or more) in September, with Santorini the driest (1 days) and Roda the wettest (8 days). The wettest September at Skala between 1991 and 2020 was 2015 with 50 mm; the driest was 1994 with 0 mm.
Sea temperature
The sea averages 24.9°C around Greece in September - warmest at Kiotari (26.3°C). That is comfortable for swimming.
Sunshine and daylight
Around 9.8 hours of sunshine a day on average, out of 12.2 hours of daylight (sunshine estimated from cloud cover).
September against the rest of the year in Greece
September is the 4th warmest month of the twelve in Greece. It is 3.0°C cooler than August and 3.8°C cooler in October. The hottest month here is August (29°C) and the coolest January (13°C).
Which part of Greece in September?
- Most sunshine: Kiotari, 11.3 h a day.
- Driest: Santorini, about 1 rainy days.
- Warmest sea: Kiotari, 26°C.
- Hottest: Skala, 30°C by day.
- Coolest (better for walking and cities): Alonissos, 24°C.
What to pack for Greece in September
Based on the averages: summer clothes for the day; swimwear - the sea is 25°C.
Similar weather elsewhere in September
Within 1.5°C of Greece's September daytime average: Sicily (28°C, sea 25°C), Benidorm (27°C, sea 25°C), Ibiza (27°C, sea 25°C), Valencia (27°C, sea 25°C), Gran Canaria (27°C, sea 23°C). See the full ranking for September.
Where to go for hotter or milder weather
For the hottest option, Skala averages 30°C by day, so it suits travellers who actively want heat rather than just mild weather. Sissi and Stalis are also warm choices at 29°C, while Crete averages 28°C overall. If keeping rain interruptions to a minimum matters more, Kiotari and Lindos stand out: both average 28°C with 1 rainy day, alongside sea temperatures of 26°C. At the cooler end, Alonissos averages 24°C by day, making it a better fit if strong heat puts you off. Athens averages 28°C, so allow for warm afternoons rather than assuming September will feel cool.
Swimming weather, with layers for the evening
The sea is a strong reason to choose September: the country average is 25°C, which should feel comfortable for many swimmers, though personal tolerance varies. Kiotari and Lindos have slightly warmer water at 26°C. Pack swimwear and light daytime clothing, but leave room for a light layer after dark. Greece averages 21°C at night, yet the difference between destinations matters. Skala and Athens average 19°C, while Kiotari stays warmer at 23°C. Skala therefore pairs the highest daytime average with noticeably cooler nights; it is not the obvious choice if your priority is sitting outside late without an extra layer.
Expect plenty of outdoor time, not guaranteed dry days
With 9.8 hours of sunshine and 4 rainy days on average, September generally supports outdoor plans without needing to organise the whole holiday around rain. Still, keep some flexibility rather than treating dry weather as guaranteed. Crete and Athens each average 3 rainy days, so a light waterproof is a sensible precaution. The warmth is also a clear step up from London's September daytime average of 19°C. In hotter destinations, plan more active outings for the cooler parts of the day and keep midday flexible. Sun protection and access to shade remain useful, even though the month may sound autumnal.
A little more detail
Greece in September FAQs
Plain answers, grounded in the averages.
Where is the hottest place in Greece in September?
Skala is the warmest of the 44 places we track in Greece in September with an average high of 29.6°C; Alonissos is the coolest at 23.6°C.
Is the sea warm in Greece in September?
The sea averages 22°C or more at Skala (25°C), Sissi (25°C), Stalis (25°C), Hersonissos (25°C), Koutouloufari (25°C) in September.
Is Greece still hot in September?
Yes, particularly in the warmer destinations. Greece averages 26°C by day, but Skala reaches an average of 30°C and Sissi and Stalis average 29°C. For milder daytime conditions, Alonissos is the coolest listed option at 24°C.
Is the sea warm enough for swimming?
For many travellers, yes. The country average sea temperature is 25°C, also recorded for Crete and Skala. Kiotari and Lindos are slightly warmer at 26°C. These are appealing swimming temperatures, though how comfortable the water feels is personal.
Will I need a jacket in the evening?
A light layer is sensible, especially if you tend to feel cool after sunset. Nights average 21°C nationally, but Skala and Athens average 19°C. Kiotari is warmer at 23°C, making it a stronger choice for warm evenings.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid), 1991-2020
Averages computed from daily values at 44 destination points.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C