AVERAGE AIR AND WATER TEMPERATURES IN °C
| City | Air / Water | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Antalya | Air | 10 | 11 | 13 | 16 | 20 | 25 | 28 | 28 | 25 | 20 | 15 | 12 |
| Water | 17 | 17 | 17 | 18 | 21 | 24 | 27 | 28 | 27 | 25 | 22 | 19 | |
| Izmir | Air | 9 | 10 | 11 | 16 | 20 | 25 | 28 | 27 | 23 | 18 | 15 | 10 |
| Water | 11 | 11 | 12 | 15 | 20 | 24 | 26 | 26 | 24 | 21 | 17 | 13 | |
| Istanbul | Air | 5 | 6 | 7 | 12 | 16 | 21 | 23 | 23 | 20 | 16 | 12 | 8 |
| Water | 9 | 7 | 8 | 11 | 15 | 20 | 23 | 23 | 21 | 17 | 14 | 11 | |
| Trabzon | Air | 6 | 6 | 7 | 11 | 15 | 20 | 22 | 22 | 19 | 15 | 12 | 9 |
| Water | 10 | 9 | 9 | 10 | 14 | 20 | 25 | 25 | 24 | 20 | 16 | 13 | |
| Ankara | Air | 0 | 1 | 5 | 11 | 16 | 20 | 23 | 23 | 18 | 13 | 8 | 2 |
| Erzurum | Air | -9 | -7 | -3 | 5 | 11 | 15 | 20 | 20 | 15 | 9 | 2 | -5 |
| Diyarbakır | Air | 2 | 2 | 2 | 14 | 19 | 26 | 31 | 31 | 25 | 17 | 10 | 4 |