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Warmest sea in Greece in May

632 coastal locations in Greece ranked by their typical May sea temperature. Region-wide average in May: 19.1°C. The top of the list is where to find the warmest swimming this month.

Warmest in May

Kastellorizo

20.8°C May mean in Greece

Regional May average

19.1°C

across all 632 coastal locations in Greece

Vs annual mean

-1.3°C

below the year-round regional average

What the Greece sea feels like in May

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

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 May fits in the year

May 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 May 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 May

Sorted by the typical May 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 May mean
1 Kastellorizo Aegean Islands 20.8°C
2 Megisti (Kastellorizo) Notio Aigaio 20.8°C
3 Akrotiri Santorini 20.7°C
4 Agathi Beach Rhodes Island 20.4°C
5 Charaki Rhodes Island 20.4°C
6 Kalathos Rhodes Island 20.4°C
7 Lardos Rhodes Island 20.4°C
8 Lindos Rhodes Island 20.4°C
9 Pefki Rhodes Island 20.4°C
10 Stegna Rhodes Island 20.4°C
11 Theotokos Rhodes Island 20.4°C
12 Tsambika Beach Rhodes Island 20.4°C
13 Afandou Rhodes Island 20.3°C
14 Ammoudes Rhodes Island 20.3°C
15 Faliraki Rhodes Island 20.3°C
16 Ialysos Rhodes Island 20.3°C
17 Ixia Rhodes Island 20.3°C
18 Kalithea Rhodes Island 20.3°C
19 Kolymbia Rhodes Island 20.3°C
20 Kremasti Rhodes Island 20.3°C
21 Petaloudes Rhodes Island 20.3°C
22 Rhodes Rhodes Island 20.3°C
23 Soroni Rhodes Island 20.3°C
24 Theologos Rhodes Island 20.3°C
25 Vagies Rhodes Island 20.3°C
Show 25 more ▸
26 Symi Aegean Islands 20.2°C
27 Rodos Notio Aigaio 20.2°C
28 Fanes Rhodes Island 20.2°C
29 Kalavarda Rhodes Island 20.2°C
30 Kameiros Rhodes Island 20.2°C
31 Kamiros Skala Rhodes Island 20.2°C
32 Mandriko Rhodes Island 20.2°C
33 Lachania Rhodes Island 20.2°C
34 Macheria Rhodes Island 20.2°C
35 Prasonisi Rhodes Island 20.2°C
36 Gennadi Rhodes Island 20.1°C
37 Kiotari Rhodes Island 20.1°C
38 Agios Fokas Kos Island 20.1°C
39 Kos Kos Island 20.1°C
40 Lambi Kos Island 20.1°C
41 Psalidi Aegean Islands 20.1°C
42 Chrysi Crete 20.0°C
43 Nisos Symi Aegean 20.0°C
44 Monolithos Rhodes Island 20.0°C
45 Keratokampos Crete 19.9°C
46 Tsoutsouras Crete 19.9°C
47 Tilos Aegean Islands 19.9°C
48 Kardamena Kos Island 19.9°C
49 Marmari Kos Island 19.9°C
50 Mastichari Kos Island 19.9°C

Coldest 10 in Greece in May

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

# Location May mean
1 Made Crete 13.5°C
2 Lemnos Aegean Islands 17.9°C
3 Myrina Aegean Islands 17.9°C
4 Ágios Efstrátios Ionian Islands 17.9°C
5 Skýros Ionian Islands 18.0°C
6 Amárynthos Ionian Islands 18.1°C
7 Néa Palátia Ionian Islands 18.1°C
8 Skála Oropoú Ionian Islands 18.1°C
9 Marmárion Ionian Islands 18.1°C
10 Fanari Eastern Macedonia and Thrace 18.1°C

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