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Warmest sea in Greece in September

632 coastal locations in Greece ranked by their typical September sea temperature. Region-wide average in September: 25.2°C. The top of the list is where to find the warmest swimming this month.

Warmest in September

Megisti (Kastellorizo)

28.1°C September mean in Greece

Regional September average

25.2°C

across all 632 coastal locations in Greece

Vs annual mean

+4.9°C

above the year-round regional average

What the Greece sea feels like in September

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

Greece monthly average 15.6°C to 26.4°C
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  • Warmest month August 26.4°C
  • Coldest month March 15.6°C
  • Annual mean 20.4°C
  • Months above 20°C 6 of 12

Where September fits in the year

September sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Greece month rankings:

Greece sea temperature map (live)

The map shows today's latest reading at every Greece location. The list below is based on the typical September mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Greece locations in September

Sorted by the typical September mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location September mean
1 Megisti (Kastellorizo) Notio Aigaio 28.1°C
2 Kastellorizo Aegean Islands 27.9°C
3 Akrotiri Santorini 27.4°C
4 Rodos Notio Aigaio 27.0°C
5 Agathi Beach Rhodes Island 26.8°C
6 Charaki Rhodes Island 26.8°C
7 Kalathos Rhodes Island 26.8°C
8 Lardos Rhodes Island 26.8°C
9 Lindos Rhodes Island 26.8°C
10 Pefki Rhodes Island 26.8°C
11 Stegna Rhodes Island 26.8°C
12 Theotokos Rhodes Island 26.8°C
13 Tsambika Beach Rhodes Island 26.8°C
14 Lachania Rhodes Island 26.6°C
15 Macheria Rhodes Island 26.6°C
16 Prasonisi Rhodes Island 26.6°C
17 Afandou Rhodes Island 26.5°C
18 Ammoudes Rhodes Island 26.5°C
19 Faliraki Rhodes Island 26.5°C
20 Ialysos Rhodes Island 26.5°C
21 Ixia Rhodes Island 26.5°C
22 Kalithea Rhodes Island 26.5°C
23 Kolymbia Rhodes Island 26.5°C
24 Kremasti Rhodes Island 26.5°C
25 Petaloudes Rhodes Island 26.5°C
Show 25 more ▸
26 Rhodes Rhodes Island 26.5°C
27 Soroni Rhodes Island 26.5°C
28 Theologos Rhodes Island 26.5°C
29 Vagies Rhodes Island 26.5°C
30 Gennadi Rhodes Island 26.4°C
31 Kiotari Rhodes Island 26.4°C
32 Kalamata Peloponnese 26.3°C
33 Finikounda Peloponnese 26.2°C
34 Koroni Peloponnese 26.2°C
35 Kardamyli Peloponnese 26.2°C
36 Nisos Symi Aegean 26.2°C
37 Chrysi Crete 26.2°C
38 Keratokampos Crete 26.1°C
39 Tsoutsouras Crete 26.1°C
40 Areopoli Peloponnese 26.1°C
41 Limeni Peloponnese 26.1°C
42 Porto Kagio Peloponnese 26.1°C
43 Stoupa Peloponnese 26.1°C
44 Costa Navarino Peloponnese 26.1°C
45 Gialova Peloponnese 26.1°C
46 Kyparissia Peloponnese 26.1°C
47 Messenia Peloponnese 26.1°C
48 Methoni Peloponnese 26.1°C
49 Pylos Peloponnese 26.1°C
50 Voidokilia beach Peloponnese 26.1°C

Coldest 10 in Greece in September

Same data the other way. Helpful if you want to know which Greece coasts to avoid for swimming in September.

# Location September mean
1 Anaxos Aegean Islands 22.1°C
2 Molyvos Aegean Islands 22.1°C
3 Made Crete 22.1°C
4 Míthymna Ionian Islands 22.4°C
5 Pétra Ionian Islands 22.4°C
6 Lesbos Aegean Islands 22.7°C
7 Mytilini Aegean Islands 22.7°C
8 Mytilíni Ionian Islands 22.9°C
9 Psará Ionian Islands 23.0°C
10 Chios Aegean Islands 23.1°C

More on this region