Climate in Santorini — Annual Weather Overview
Santorini has a arid climate — hot and dry with very little rainfall. The hottest month is July (average high 28.9°C) and the coolest is January (14.1°C). There is a noticeable seasonal temperature shift of 14.8°C between July and January. Annual rainfall is modest at around 226mm, with December the wettest month (50.1mm) and July the driest (0.6mm). Average daily sunshine is 10.8 hours.
**Spring (March, April, May):** average highs 18.4°C, 64mm rain. **Summer (June, July, August):** average highs 27.9°C, 12mm rain. **Autumn (September, October, November):** average highs 22.9°C, 33mm rain. **Winter (December, January, February):** average highs 15.0°C, 116mm rain.
Santorini — Monthly Temperatures
Santorini — Monthly Rainfall
✅ Best months to visit
All year
ℹ️ No months to avoid
Weather in Santorini stays reasonable all year.
Santorini weather by month
| Month | High | Low | Rain | Sun/day | Rainy days | Rating |
|---|---|---|---|---|---|---|
| January | 14.1°C | 10.6°C | 41.2mm | 8.0h | 8 | 10/10 |
| February | 14.4°C | 10.4°C | 25.1mm | 9.2h | 6 | 10/10 |
| March | 14.8°C | 11.0°C | 40.2mm | 9.9h | 7 | 10/10 |
| April | 18.3°C | 13.4°C | 10.5mm | 11.1h | 3 | 10/10 |
| May | 22.2°C | 16.7°C | 13.8mm | 12.7h | 3 | 10/10 |
| June | 26.0°C | 20.6°C | 8.1mm | 13.7h | 1 | 10/10 |
| July | 28.9°C | 23.4°C | 0.6mm | 13.5h | 0 | 10/10 |
| August | 28.9°C | 23.7°C | 3.0mm | 12.9h | 1 | 10/10 |
| September | 26.5°C | 22.0°C | 6.1mm | 11.8h | 1 | 10/10 |
| October | 22.7°C | 18.7°C | 11.4mm | 10.1h | 2 | 10/10 |
| November | 19.4°C | 15.6°C | 15.7mm | 9.0h | 3 | 10/10 |
| December | 16.5°C | 13.0°C | 50.1mm | 8.2h | 7 | 10/10 |
For the full verdict on when to go, see the best time to visit Santorini. Seasonal breakdowns: spring, summer, autumn and winter.
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Frequently Asked Questions
What type of climate does Santorini have?
Santorini has a arid climate — hot and dry with very little rainfall. Average highs range from 14.1°C in January to 28.9°C in July.
What is the hottest month in Santorini?
July is the hottest month in Santorini, with average highs of 28.9°C and lows of 23.4°C.
What is the coldest month in Santorini?
January is the coolest month, with average highs of 14.1°C and lows of 10.4°C.
What is the wettest month in Santorini?
December is the wettest month, averaging 50.1mm of rainfall over around 7 rainy days.
How much rain does Santorini get per year?
Santorini receives around 226mm of rain per year. The driest month is July (0.6mm).
When is the best time to visit Santorini?
The best time to visit Santorini is All year. See the full month-by-month guide →
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Trip essentials for Santorini
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.