Santorini, Greece Weather
Santorini hourly forecast: next 24 hours
Today's high of 66°F (19°C) is about 18°F (10°C) below the typical August high of 84°F (29°C).
Current conditions in detail
Santorini weather tomorrow (Tuesday, August 18)
Tomorrow in Santorini looks patchy rain nearby, with a high of 65° and an overnight low of 62°. Precipitation chance is modest at 39%. Winds top out near 26 mph, and the UV index reaches 9 (very high).
Santorini 14-day forecast
About the weather in 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.
Santorini weather: 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.
Season by season
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.
Average temperatures in Santorini by month
| 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% |