Santorini, Greece Climate & Monthly Averages
The climate of Santorini
Weather in Santorini is shaped by its semi-arid climate - expect big day-to-night temperature swings and modest rainfall. July afternoons typically reach 85°F (29°C), while January highs hover near 58°F (14°C). Annual precipitation averages 10.9 inches (278 mm) over about 51 rainy days.
Climate quick facts
- Hottest month: July - highs near 85°F (29°C)
- Coldest month: January - highs near 58°F (14°C)
- Record high: 97°F (36°C) · Record low: 37°F (3°C) (2015–2024)
- Wettest month: January (11 rainy days) · Sunniest: June (13.8 h sun/day)
- Climate type: semi-arid - big day-to-night temperature swings and modest rainfall
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 85°F (29°C) and overnight lows stay near 76°F (24°C). The coolest month is January, with typical highs of 58°F (14°C) and lows around 52°F (11°C). Based on 2015–2024 weather data, temperatures have reached as high as 97°F (36°C) and dropped as low as 37°F (3°C).
Rain, sun and snow
January is usually the wettest month. It brings about 2.2 inches (57 mm) of rain over 11 days, while July is the driest. June brings the most sunshine, averaging 13.8 hours of sun a day.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 58° | 52° | 11 | 2.2 in | 7.9 h/day | 67% |
| February | 60° | 53° | 8 | 2.1 in | 9.1 h/day | 69% |
| March | 61° | 55° | 7 | 1.9 in | 10.1 h/day | 67% |
| April | 67° | 58° | 3 | 0.5 in | 11.5 h/day | 67% |
| May | 73° | 64° | 3 | 0.4 in | 12.6 h/day | 68% |
| June | 81° | 71° | 1 | 0.2 in | 13.8 h/day | 66% |
| July | 85° | 76° | 0 | 0.0 in | 13.5 h/day | 63% |
| August | 84° | 76° | 1 | 0.1 in | 12.9 h/day | 66% |
| September | 80° | 73° | 1 | 0.2 in | 11.8 h/day | 67% |
| October | 74° | 67° | 2 | 0.5 in | 10.1 h/day | 69% |
| November | 68° | 61° | 4 | 0.9 in | 9.2 h/day | 70% |
| December | 61° | 55° | 9 | 1.8 in | 8.1 h/day | 69% |
Santorini month by month
Santorini weather in January
January brings highs around 58°F (14°C), lows near 52°F (11°C), about 11 wet days - typically the coldest month and the wettest month of the year in Santorini.
Santorini weather in February
February brings highs around 60°F (15°C), lows near 53°F (12°C), about 8 wet days.
Santorini weather in March
March brings highs around 61°F (16°C), lows near 55°F (13°C), about 7 wet days.
Santorini weather in April
April brings highs around 67°F (19°C), lows near 58°F (15°C), about 3 wet days.
Santorini weather in May
May brings highs around 73°F (23°C), lows near 64°F (18°C), about 3 wet days.
Santorini weather in June
June brings highs around 81°F (27°C), lows near 71°F (22°C), about 1 wet days - typically the sunniest month of the year in Santorini.
Santorini weather in July
July brings highs around 85°F (29°C), lows near 76°F (24°C), about 0 wet days - typically the hottest month and the driest month of the year in Santorini.
Santorini weather in August
August brings highs around 84°F (29°C), lows near 76°F (24°C), about 1 wet days.
Santorini weather in September
September brings highs around 80°F (27°C), lows near 73°F (23°C), about 1 wet days.
Santorini weather in October
October brings highs around 74°F (23°C), lows near 67°F (19°C), about 2 wet days.
Santorini weather in November
November brings highs around 68°F (20°C), lows near 61°F (16°C), about 4 wet days.
Santorini weather in December
December brings highs around 61°F (16°C), lows near 55°F (13°C), about 9 wet days.
Seasons in Santorini
Spring (March through May)
Spring in Santorini is mild, with daytime highs averaging 67°F (20°C) and nights around 59°F (15°C); rain falls on about 13 days over the three months.
Summer (June through August)
Summer in Santorini is hot, with daytime highs averaging 83°F (28°C) and nights around 74°F (24°C); precipitation is infrequent.
Fall (September through November)
Fall in Santorini is mild and warm, with daytime highs averaging 74°F (23°C) and nights around 67°F (19°C); precipitation is infrequent.
Winter (December through February)
Winter in Santorini is mild, with daytime highs averaging 60°F (15°C) and nights around 53°F (12°C); expect showers on roughly 27 days across the season.
Climate questions, answered
What is the average temperature in Santorini?
Is Santorini hot in summer?
Is Santorini cold in winter?
How many rainy days does Santorini get in a year?
Best time to visit Santorini
The best time to visit Santorini is generally February to June and September, when temperatures are at their most comfortable before or after the peak heat. Daytime temperatures in that window typically sit near 70°F (21°C).
Pack for Santorini with rain gear if you travel around January. Evenings can feel noticeably cooler than afternoons - July nights average 76°F (24°C).
Santorini temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.