The island of Santorini enjoys a typical temperate Mediterranean climate, with hot, sunny and dry summers and mild, short winters. During the summer months, average temperatures reach 34° in July, while in winter they do not fall below 9° in January. The months with the most precipitation are January and February, while in months such as October and March, the climate remains relatively warm.
The summer season opens quite early and already by the end of April, many tourists come to the island of Santorini and, thanks to the very favourable weather conditions, can already go swimming in the sea. Good weather affects the island of Thira for many months, making it ideal for a visit at all times of the year, although the most popular months are from June to September inclusive.
In the evening, a cool breeze caresses the island, providing refreshment, especially in summer, after a long day in the sun. Rainfall is almost entirely absent on the island of Santorini with rare exceptions, 3 centimetres per month from November to February.
The hottest months of the year in Santorini are June, July and August, when the monthly average temperature reaches 29 °C, while the coldest months of March, December, January and February the thermometer drops up to 10 °C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °C | 14 | 14 | 16 | 18 | 23 | 27 | 29 | 29 | 26 | 23 | 19 | 15 |
| Min °C | 10 | 10 | 11 | 13 | 17 | 21 | 23 | 23 | 21 | 18 | 14 | 11 |
In Santorini rainiest months of the year are January and December during which monthly rainfall average reaches 75 mm. On the other side, driest months are July, June and August when the average rainfall is reduced to 0 mm per month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 71 | 43 | 40 | 16 | 11 | 0 | 7 | 0 | 11 | 38 | 59 | 75 |
| Days | 10 | 9 | 7 | 4 | 3 | 0 | 1 | 0 | 2 | 4 | 8 | 11 |
June, August and July are sunniest months of the year. During that months, from sunrise to sunset there are 14 total sunshine hours in Santorini. In January, February and December sunshine hours are reduced to 6.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours | 7 | 7 | 9 | 11 | 12 | 13 | 14 | 13 | 11 | 9 | 8 | 6 |
Months of the year when sea water is warmer are July, September and August, average temperature is around 25 °C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 16 | 16 | 16 | 17 | 19 | 22 | 24 | 25 | 24 | 23 | 20 | 18 |