Santorini Weather
A month-by-month look at temperature, rainfall and what to pack in Santorini. The annual average is 21°C high / 15°C low — hottest in July (29°C) and coldest in January (9°C).
Santorini Weather at a Glance
As of 2026A quick summary of Santorini's year-round climate and the best time to visit.
- Annual average
- 21° / 15°
- Best time to visit
- May, June, September
- Hottest month
- July (29°C)
- Coldest month
- January (9°C)
- Wettest month
- January (75mm)
- Driest month
- July (0mm)
As of 2026, Santorini's weather averages 21°C high / 15°C low across the year, and the best time to visit for stable temperatures, rainfall and crowds is May, June, September. The hottest month is July (29°C), the coldest is January (9°C), and the wettest is January (75mm).
Best Time to Visit Santorini
Best month for Santorini — comfortable + pre-cruise season crowds + lower prices than July-August. Greek-island feel.
Iconic Santorini summer — warm + Aegean blue + post-school + pre-Korean-break. The honeymoon-canonical month.
Best month — post-cruise crowds drop sharply + still warm + sea-temp still 24°C + hotels easing.
Santorini Weather Month by Month
Tap any month for a detailed guide with what to wear, sunrise/sunset and air quality.
| Month | High/Low | Rain | Rainy days | Crowds | |
|---|---|---|---|---|---|
| January | 14° / 9° | 75mm | 11 | Quiet | Details → |
| February | 14° / 9° | 65mm | 10 | Quiet | Details → |
| March | 15° / 10° | 55mm | 8 | Quiet | Details → |
| April | 18° / 12° | 30mm | 6 | Busy | Details → |
| May | 23° / 16° | 15mm | 3 | Very busy | Details → |
| June | 27° / 20° | 5mm | 1 | Very busy | Details → |
| July | 29° / 22° | 0mm | 0 | Very busy | Details → |
| August | 29° / 22° | 0mm | 0 | Very busy | Details → |
| September | 25° / 19° | 15mm | 2 | Very busy | Details → |
| October | 22° / 16° | 50mm | 5 | Busy | Details → |
| November | 18° / 13° | 65mm | 8 | Quiet | Details → |
| December | 15° / 11° | 75mm | 11 | Quiet | Details → |
What to Wear in Santorini by Season
Spring perfect. Tee + light jacket for evening.
Peak summer + Meltemi wind. Light cotton + sun + windproof layer.
Light layers + jacket.
Like January. Light coat + sweater.
Santorini Weather FAQ
What is the best time to visit Santorini? +
For weather, May, June, September are the most comfortable months. Highs sit around 23°C with relatively stable rainfall and crowds.
What are the hottest and coldest months in Santorini? +
The hottest month is July with an average high of 29°C, and the coldest is January with an average low of 9°C. The annual average is 21°C high / 15°C low.
When does it rain most in Santorini? +
The wettest month is January (75mm over about 11 rainy days) and the driest is July (0mm). Total annual rainfall is roughly 450mm.
What should I pack for Santorini? +
Spring (Mar–May) averages 19/13°C — Spring perfect. Tee + light jacket for evening. Summer (Jun–Aug) averages 28/21°C — Peak summer + Meltemi wind. Light cotton + sun + windproof layer. Autumn (Sep–Nov) averages 22/16°C — Light layers + jacket. Winter (Dec–Feb) averages 14/10°C — Like January. Light coat + sweater.
What is the weather in Santorini this month (June)? +
June averages 27°C high / 20°C low with 5mm rainfall over about 1 rainy days. Crowds are very busy and prices are high.
Keep Planning Your Santorini Trip
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.