Quick answer: The best time to visit Santorini is late April to early June and September to October — warm, swimmable and far less crowded than the July–August peak. Summers are hot and dry; winters are mild, wet and very quiet, with many businesses closed.
Santorini weather by month
| Month | Avg high | Conditions |
|---|---|---|
| January | ~13°C | Mild, wet, quiet |
| February | ~14°C | Mild, wet |
| March | ~16°C | Spring begins |
| April | ~19°C | Pleasant, greening |
| May | ~23°C | Warm, ideal |
| June | ~27°C | Hot, sunny, busy |
| July | ~29°C | Hot, peak crowds |
| August | ~29°C | Hot, peak crowds |
| September | ~26°C | Warm, ideal |
| October | ~22°C | Mild, quieter |
| November | ~18°C | Cooler, wetter |
| December | ~14°C | Mild, wet, quiet |
Seasons explained
Summer (Jun–Aug) is hot, rain-free and busiest, with the famous sunsets and full nightlife. Spring and autumn are the sweet spots for comfortable sightseeing and swimming. Winter is mild but wet, and Oia in particular goes quiet as hotels and restaurants close.
What to pack
Sun protection and light clothes for summer; add a light jacket for spring and autumn evenings; bring a proper coat and umbrella in winter. Comfortable shoes everywhere — Santorini is steep and cobbled.
FAQ
What is the best month to visit Santorini? May, June, September or early October.
Is Santorini good in winter? It’s peaceful and cheap but wet, with many closures.
Compare with our Greece vs Croatia guide and best time to visit Greece.
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Written by
John Morrison is the founder and lead travel writer at Packzup. Over the past decade he has explored destinations across Africa, the Americas, Asia, Europe, the Middle East, and Oceania — always self-funded, never on a press trip.