Is it warm enough to swim in Santorini in September?

Santorini beaches and water activities are warm and inviting from May to mid-October and at their best from June to September. Santorini in January (10% Crowded): Damp, cold, and windy (by Santorini standards).



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GREECE. Greece is home to some of the best swimming waters in all of Europe, and September is a great month to visit, with the weather and sea temperatures as perfect as can be (26.8°C/80.2°F).

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The best time to visit Santorini is from September to October and April to May when the weather is warm and the crowds are scarce.

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In the Greek islands, the sun will almost certainly be shining all day and the sea will be deliciously warm for swimming. In the southern islands, you can expect daily highs reaching 28ºC, falling to 24ºC towards the end of October.

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The swimming in Santorini is unique and beautiful. The water is crystal clear, while the geological formations are quite different from other areas of the world due to coming from a volcano.

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Warmest sea temperatures in September The hottest temperatures are found in the eastern and southernmost parts of the Mediterranean – Cyprus averages 27°C and Malta 26°C.

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Be warned that while early September will see all visitor facilities in full swing, but the latter part of the month may see hotels and restaurants reduce opening hours (or shut down completely).

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The evenings can be cool with an ocean breeze, dipping down below 20C, so I highly recommend bringing some long pants and a sweater or jacket.

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Which islands will be hottest?
  • Kos. Average temperature in September: 28ºC. ...
  • Crete. Average temperature in September: 27ºC. ...
  • Cyprus. Average temperature in September: 31ºC. ...
  • Corfu. Average temperature in September: 27ºC. ...
  • Samos. Average temperature in September: 29ºC. ...
  • Santorini. Average temperature in September: 25ºC. ...
  • Halkidiki.


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GREECE. Greece is home to some of the best swimming waters in all of Europe, and September is a great month to visit, with the weather and sea temperatures as perfect as can be (26.8°C/80.2°F).

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The weather in Greece in September is hot and sunny skies can be found in all Aegean and Ionian islands, with the temperatures boasting an average high of a balmy 82 degrees Fahrenheit and an average snowfall of zero. Despite the sun shining down relentlessly, showers are never too far away.

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Late September temperatures in Santorini are still pleasant, with averages around 24°C (75°F), making it ideal for outdoor sports and sightseeing. The weather is sunny and clear, and the sea is still warm enough for swimming.

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Obviously, the weather will play a factor in what you're packing — but if you're going to Santorini from late spring to early fall, you should be fine with mainly “beachy” attire. Think sundresses, several bikinis, shorts, and cute tops, along with hats and sandals.

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And, yes, you can also swim in Santorini in October. In fact, the sea is sometimes even warmer than in June! Plus, you get a little extra when visiting the island's shores as October is a low-tourism month.

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Santorini is the top tourist destination in Greece and is world-famous for its unique natural beauty. The caldera with the white villages on top, the sunken volcano, and the charming sunset make it a popular place for vacation. In brief, we recommend staying 3 to 5 days in order to visit as many places as possible.

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Cape Columbo Beach is found along Santorini's northern coast, far from the crowds of Fira and Perissa. Being so isolated, it's a popular spot for those looking to minimize their tan lines by sunbathing in the nude.

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Santorini yearly weather summary The year can be broadly subdivided into two main seasons: the warm and dry season lasting from April until October and the cold and rainy season lasting from November until the end of March.

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70° to 78° Fahrenheit is the range where most folks feel comfortable swimming.

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