Santorini weather by month & best time to visit
Climate for 1 place in Santorini from 30 years of weather data. Best time to visit: July – September. August is the warmest month with 26 °C, January the coolest with 13 °C.
Best time to visit Santorini
The best time to visit Santorini is July – September: days of 24–26 °C, 10 hours of sunshine a day and 0 rainy days a month on average. The sea is 24–25 °C then. It reaches 20 °C, warm enough for most swimmers, from June to November. Most rainy days fall in January (12).
Santorini weather by month
Long-term averages of 1 place: the score is their mean, temperatures range from the coolest to the warmest place. Best months are marked; open a month for details.
| Month | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| JanuaryJan | 14 | 13° | 17° | 5 h | 12 |
| FebruaryFeb | 20 | 13° | 16° | 5 h | 9 |
| MarchMar | 28 | 14° | 16° | 7 h | 7 |
| AprilApr | 38 | 16° | 17° | 9 h | 3 |
| MayMay | 50 | 20° | 19° | 9 h | 2 |
| JuneJun | 83 | 23° | 22° | 11 h | 0 |
| JulyJul | 99 | 25° | 24° | 11 h | 0 |
| AugustAug | 100 | 26° | 25° | 11 h | 0 |
| SeptemberSep | 92 | 24° | 24° | 9 h | 1 |
| OctoberOct | 61 | 20° | 22° | 7 h | 3 |
| NovemberNov | 36 | 17° | 20° | 6 h | 6 |
| DecemberDec | 18 | 14° | 18° | 4 h | 10 |
Destinations in Santorini1
Santorini weather: quick answers
When is the best time to visit Santorini?
The best time to visit Santorini is July – September: days reach 24–26 °C, with 10 hours of sunshine a day and 0 rainy days a month on average.
What is the warmest month in Santorini?
August is the warmest month, with daytime highs of 26 °C on average (26 °C depending on the place). The coolest is January with 13 °C.
How warm is it in Santorini in January?
In January, the coolest month, days reach 13 °C on average and the sea is 17 °C.
When can you swim in Santorini?
The sea is 20 °C or warmer from June to November and warmest in August with 25 °C.
When does it rain most in Santorini?
January has the most rainy days (12 on average), June the fewest (0).
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Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)