Temperatures are starting to regularly exceed 70°F this month, as warm sunny weather predominates. There is hardly any rain, either. You'll enjoy ten daily hours of sunlight a day, and seawater temperatures have also increased to 64°F/18°C.
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You can expect average highs of 24ºC and 10 hours of daily sunshine in May – ideal for both sunbathing and sightseeing. The sea will be around 18ºC, just warm enough for a quick swim, and evenings are pleasantly cool.
Visit Santorini in Spring & Fall (Shoulder Season)The Spring & Fall (shoulder season) is from mid-April to June and from September to mid-October. With most establishments still being open and fully functioning but without the high-season crowds, spring and fall are hands down the best time to visit Santorini.
General Tips on What to Wear in SantoriniOverall, light fabrics are best in the warm weather. For that reason, forget your jeans unless you're visiting in the shoulder months or winter.
Shorts are acceptable on the beach or when going from the beach to the shops near-by. If you plan to take a ferry between the islands, shorts are a good option if you travel by day (opt for a pair of long pants though if you travel by night).
Crete. Crete is the southernmost island in Greece and enjoys average May daytime temperatures of 23 degrees/74 Fahrenheit making it one of the warmest greek islands to visit in May. The water is usually warm enough for swimming and the weather is usually calm, with occasional showers.
The best time to visit is late spring (May) and fall (Sept–Oct). It's pleasant, with comfortable weather, no rain, and smaller crowds (except during holiday weekends). Winter (late October through mid-March) is colder, with some rainfall.
Tourist season in Greece is roughly Easter through October. Peak season is summer, when Athens is packed with tourists, and hotel prices can be high. July and August are the hottest. The best time to visit is late spring (May) and fall (Sept–Oct).
Soft Pastels: Serenity in Hues Pastel shades like blush pink, baby blue, and mint green are perfect for those seeking a softer, romantic look. These gentle hues blend seamlessly with Santorini's natural palette, reflecting the island's tranquility and serenity.
The best time to visit Santorini for budget-conscious travellers is during the off-season between the end of October and March when hotels have vacant rooms and airlines offer lower fares.
Santorini is best known as a romantic island with one-of-a-kind views, whereas Mykonos is more about sandy beaches and spirited partying. Depending on the vibe you seek, both islands suit holidays à deux. Solo travellers and groups of friends will also find both appealing, though Mykonos offers more in terms of edge.
On the warmest days of the month, the temperature may reach 18.5°C/65.3°F. The day lasts approximately 11 hours. The sunshine lasts about 5 hours. Humidity reaches 68%, while the average speed of the wind is around 24 kph (15mph).