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Headout sells timed-entry tickets and guided visits for Athens and the islands, with instant mobile delivery.
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Omio lists SeaJets, Blue Star and the regional operators side by side with live times and fares, so you can book the crossing that fits your day.
Santorini’s weather is one of the mildest, most predictable, and warmest in Europe (and that can also be said for Greece and the Greek islands, honestly). Knowing the weather at your destination is always good because it can literally make or break your holidays.
BEST HOTELS PER SEASON IN SANTORINI:
And in Santorini, this can easily be said because it is a place with four distinctive seasons (like most of Greece, actually) :
Keep reading…
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In terms of how crowded the island will be, here is a rough guide :
These guys were puddling in Santorini. In October…:
Nothing crazy or extreme to be honest.
The only time you would probably feel slightly uncomfortable with the Santorini weather is during the hot summer months of July and August, when temperatures can rise up to 38-39 degrees Celsius (or 100-102 Fahrenheit). However, this is really only a few days during the summer (the average temperatures are much lower, as you can see on the charts below). It can happen, though.
But apart from some summer extremes, every other season or month is mild and relatively dry. And to be honest with you…you will probably be by your pool or on the beach…and you will be lusting for some warm sun, right? Here are the charts with the averages of temperatures and rainfalls in Santorini:
It depends on the season and the month.
You need jackets, long sleeves, sweaters, and jumpers. No shorts or summer dresses. It can get pretty cold, as it is also windy and humid (no snow or below-0 temperatures, though…). Remember: Santorini is an island!
As a rule of thumb, remember that January and February are the coldest months in Santorini (and in Greece), with the most unpredictable weather (but no extremes…don’t worry). You may get 3 degrees Celsius with drizzle but also 20 degrees Celsius and sunny! Who knows?
Winter in Santorini feels more like the fall/autumn of major Western European cities (Paris, London).
And yes…there can be some snow for a couple of days in Santorini in the winter, but for people who live in snowy countries or areas, the Santorini snow looks like a joke:
Spring lighter clothes and even a swimsuit in May! March also has unpredictable weather sometimes in Santorini (and Greece), but nothing to worry about. You will probably get sunny days with around 15-20 degrees Celsius, though. In April, the weather becomes warmer every day, and it can reach 25 degrees Celsius with clear skies and sun.
However, May is the month to start swimming in Santorini (even though the sea waters might still be slightly cold from the winter). If you plan to visit Santorini in May, bring your swimsuits, bikinis, monokinis, shorts, t-shirts, and summer dresses. However, if you are visiting Santorini in April, you do need to bring jackets and warm clothes.
May in Santorini feels like summer in major European cities (London, Paris)!
The best time of the year! Bikinis, borat-kinis, monokinis, swimsuits, Speedos, flip flops, and all the shorts and summer dresses you have!
It’s summer and hot (not desert hot though…).
Summer in Santorini is dry and hot. No long sleeves, no trousers, no jackets 24/7.
Summer in Santorini is the best summer weather you will ever feel!
September still feels like summer. You may need some long sleeves for nighttime only. You will be on the beach or the swimming pool most days anyway.
October is slightly different, and it is possibly the last month of the year when you can actually enjoy a swim in the sea or the swimming pool without being uncomfortably cold. Read also the detailed guide on Santorini in October and what to expect.
November is getting slightly colder, and swimming is less likely to be nice. You should probably wear long sleeves most of the time, but chances are that you will also get many super sunny days with 20 degrees Celsius! Fantastic!
No matter the weather, you will have a great time in Santorini. The best time to visit the island depends on your desire.
If you see the beaches and swimming pools, visit Santorini during the high season. If you are not bothered about swimming or the beaches and just want to enjoy the magnificent landscapes with fewer tourists/people, then go for the Low Season. Santorini has something for every time of the year!
Snow in Santorini is extremely rare. While winter temperatures can drop to 9°C (48°F) in January and February, it almost never snows. If it does, it usually melts within a few hours.
Yes, Santorini can be very windy, especially in July and August when the “Meltemi” winds blow across the Cyclades. These dry, northern winds can make the hot summer days feel much cooler.
Yes, you can usually swim in Santorini through early to mid-October. The sea has been warming up all summer and retains its heat, though the outside air temperature will begin to cool down in the evenings.
We recommend these trusted resources to compare rates, read reviews, and secure bookings for your upcoming trip to Santorini and Greece:
Best rates on hotels, luxury suites, and traditional caldera villas.
Stay connected with local Greek eSIM data packages starting at just a few dollars.
Compare ferry routes, schedules, and book tickets across all major Greek lines.
Last updated: August 14, 2026
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