Best Time to Visit Santorini in 2026

April–May and late September–October are the sweet spot: 22–26°C, half the crowds of August and 30–40% cheaper hotels.

We've been running tours on Santorini since 2000, and the single question we get more than any other is when should I come. The short answer: late April through mid-June, or mid-September through mid-October. The long answer follows.

The honest month-by-month breakdown

April — quiet, mild, occasional rain

Average highs 18–21°C. Wildflowers everywhere, caldera views without the haze of summer, and you'll have Oia almost to yourself at sunset. Sea is still cold (16°C) so no swimming. Most catamaran cruises run from mid-April. This is our personal favourite month.

May — the perfect compromise

Average highs 23°C, water warms to 18°C, all wineries and tour operators are open, and prices are roughly 35% below July. May is when we book our own family days off.

June — busy but still manageable

Highs 27°C, sea 21°C, perfect for swimming. Sunset crowds in Oia become noticeable but still walkable. Hotel rates climb 25% over May.

July & August — peak season, peak everything

33–35°C, sea 24°C, every restaurant booked, every viewpoint shoulder-to-shoulder. Hotel rates double or triple. We do not recommend these months unless your dates are fixed by school holidays. If you must come, book private tours so you skip the queues.

September — the smart traveller's pick

First half of September is still summer (28°C, sea 24°C) but families have gone home. Late September is the absolute sweet spot: warm sea, soft light, 40% off August prices.

October — the photographer's month

23–25°C, dramatic skies, harvest in the vineyards, and the island exhales. Catamaran cruises run until late October. Some restaurants in Oia start closing after the 25th.

November–March — locals' Santorini

Cool (12–17°C), often windy, occasional storms. Most tour operators and beach restaurants close. Worth it only if you're after a quiet cultural trip — wineries, museums, hiking the caldera rim.

When to come for what you want

Catamaran cruise + swimming: mid-June to late September
Oia sunset photography without crowds: April, May, October
Wine harvest tours: late August through September
Hiking the Fira–Oia trail: April, May, October, November
Lowest prices, still open: late April and the first two weeks of October
Weddings & engagements: May, June, September

What we'd book if we were you

If you have a week and flexible dates, fly in on a Sunday in early October. Spend the first day on a sunset catamaran cruise to acclimatise. Day two, do a private 6-hour tour of the island with one of our guides — Akrotiri, Pyrgos, a winery, Oia at sunset. Day three, a slower wine tour with three estates and lunch. Day four, helicopter or scuba diving depending on your appetite. The remaining days for the beach and aimless wandering. That's the trip we'd take ourselves.

Common questions about best time to visit santorini

What is the cheapest month to visit Santorini?

November through March is cheapest overall, but most tour operators and many restaurants are closed. For the cheapest month with everything open, choose late April or the first two weeks of October — hotel rates are 30–40% below July and August.

Is Santorini too hot in August?

Yes for most visitors. Average highs are 33°C with frequent days at 35–37°C and little shade. Combined with peak crowds at every viewpoint, August is the hardest month to enjoy the island. If you must come, book early-morning or sunset tours and avoid midday outdoors.

Can you swim in Santorini in May?

It is possible but cold — the sea is around 18°C in May. Most visitors find swimming comfortable from mid-June (21°C) through October (22°C).

When is Santorini least crowded?

April, early May, late October and November have the fewest visitors while keeping pleasant weather. Late September is also quiet compared to August but the weather is still summery.

Best Time to Visit Santorini in 2026 — A Local's Honest Month-by-Month Guide