Santorini weather by month & the best time to visit
Greece · beach resort · Mediterranean climate
The best time to visit Santorini is June — its sunniest month (Sunshine Score 96/100), with July and August close behind. Santorini averages about 3,012 hours of sunshine a year. Daytime highs around 25°C / 77°F and roughly 5 mm of rain in June.
When is the best time to visit Santorini?
For sunshine, the best time to visit Santorini is June, then July and August. The dullest month is January (40/100, 96 mm of rain). The full month-by-month picture is in the table below.
How sunny is Santorini?
Santorini is one of the sunniest places on Earth: about 3,012 hours of sunshine a year. 56 Sunshine Score points separate June (96) from January (40), so the month you pick matters. It ranks #14 of 40 destinations in Greece for annual sunshine, above the national median of 2,896 hours. Rain has a clear season: the wettest stretch, around January, carries about 54% of the annual 488 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 40 | 14° / 57°F | 13° / 55°F | 96 mm | 2 | 18° / 64°F |
| February | 48 | 15° / 59°F | 13° / 55°F | 81 mm | 3 | 17° / 63°F |
| March | 59 | 16° / 61°F | 14° / 57°F | 44 mm | 4 | 17° / 63°F |
| April | 69 | 17° / 63°F | 15° / 59°F | 26 mm | 6 | 18° / 64°F |
| May | 93 | 21° / 70°F | 18° / 64°F | 19 mm | 8 | 19° / 66°F |
| June | 96 | 25° / 77°F | 22° / 72°F | 5 mm | 9 | 23° / 73°F |
| July | 96 | 27° / 81°F | 24° / 75°F | 2 mm | 10 | 25° / 77°F |
| August | 96 | 27° / 81°F | 24° / 75°F | 2 mm | 9 | 26° / 79°F |
| September | 94 | 25° / 77°F | 23° / 73°F | 18 mm | 7 | 25° / 77°F |
| October | 89 | 22° / 72°F | 20° / 68°F | 44 mm | 5 | 23° / 73°F |
| November | 78 | 19° / 66°F | 17° / 63°F | 64 mm | 3 | 21° / 70°F |
| December | 54 | 16° / 61°F | 14° / 57°F | 87 mm | 2 | 19° / 66°F |
Sea temperature in Santorini by month
The sea off Santorini is warmest in August at around 26°C / 79°F, and coolest in February at 17°C / 63°F. The water sits at a comfortable 21°C or warmer roughly 6 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
How Santorini compares month by month: Santorini vs Heraklion · Santorini vs Chaniá · Santorini vs Kos · Santorini vs Mykonos · all comparisons
Santorini: questions and answers
What kind of destination is Santorini?
Santorini is a beach resort in Greece with a Mediterranean climate — the sea reaches 26°C at its warmest and is swimmable (21°C+) about 6 months a year.
How many hours of sunshine does Santorini get a year?
Santorini gets about 3,012 hours of sunshine a year, at its best around June.
When is the best time to visit Santorini?
The sunniest time to visit Santorini is June, when the Sunshine Score peaks at 96/100 (with July and August close behind). Expect daytime highs around 25°C / 77°F.
What is the least sunny month in Santorini?
January is the least sunny month in Santorini, scoring 40/100 with about 96 mm of rain.
What is the sea temperature in Santorini?
The sea in Santorini ranges from about 17°C (February) to 26°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Santorini?
The typical midday UV index in Santorini peaks around 10 (very high) in July, easing to about 2 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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