Which is the sunniest Greek island? Month by month
27 Greek island destinations — every one with its own airport — compared from long-term climate normals: the sunniest and the warmest island each month, and where the sea is warmest. Mainland Greece is on the Greece page. Best time to visit the Greek Islands →
The sunniest Greek island, every month
| Month | Sunniest island | Score | Warmest island | Day high | Warmest sea |
|---|---|---|---|---|---|
| January | Heraklion | 47 | Heraklion | 15° / 59°F | Kos 19° |
| February | Heraklion | 48 | Heraklion | 15° / 59°F | Kos 18° |
| March | Heraklion | 66 | Heraklion | 17° / 63°F | Kos 18° |
| April | Heraklion | 84 | Heraklion | 19° / 66°F | Kastelorizo 19° |
| May | Karpathos | 95 | Rhodes | 24° / 75°F | Corfu 21° |
| June | Kos | 97 | Mytilene | 29° / 84°F | Corfu 25° |
| July | Kos | 98 | Rhodes | 32° / 90°F | Corfu 28° |
| August | Kos | 98 | Rhodes | 32° / 90°F | Kastelorizo 30° |
| September | Kos | 95 | Rhodes | 29° / 84°F | Kastelorizo 29° |
| October | Kos | 90 | Rhodes | 25° / 77°F | Kastelorizo 26° |
| November | Heraklion | 86 | Rhodes | 21° / 70°F | Kos 23° |
| December | Heraklion | 60 | Heraklion | 17° / 63°F | Kos 21° |
Greek islands ranked by annual sunshine
| # | Island destination | Sun h/yr | Best month | Day high then |
|---|---|---|---|---|
| 1 | Kos | 3,218 | July | 26° / 79°F |
| 2 | Rhodes | 3,201 | July | 32° / 90°F |
| 3 | Karpathos | 3,177 | July | 26° / 79°F |
| 4 | Kastelorizo | 3,159 | June | 25° / 77°F |
| 5 | Kalymnos | 3,101 | June | 24° / 75°F |
| 6 | Astypalaia | 3,100 | June | 24° / 75°F |
| 7 | Kasos | 3,085 | July | 26° / 79°F |
| 8 | Samos | 3,081 | July | 29° / 84°F |
| 9 | Ikaria | 3,081 | July | 26° / 79°F |
| 10 | Leros | 3,080 | July | 27° / 81°F |
| 11 | Chios | 3,045 | July | 29° / 84°F |
| 12 | Milos | 3,031 | July | 26° / 79°F |
| 13 | Santorini | 3,012 | June | 25° / 77°F |
| 14 | Zakynthos | 2,970 | July | 29° / 84°F |
| 15 | Heraklion | 2,929 | July | 28° / 82°F |
Sunshine hours come from climate normals interpolated to each island's airport — neighbouring small islands can share a value, so treat differences of under ~100 hours as a tie. How the data works →