What's the weather like in Santorini in April?
The island of Santorini in the southern Aegean, and about 200km southeast of mainland Greece which means it has fairly warm Mediterranean weather. Things are getting hotter in April, which marks the beginning of the summer season which runs between April and October, and the rain levels are reasonably low. You'll be kept cool on the coast by the Aegean and its breezes.
The average high in Santorini is 19ºC in April, which is perfectly warm enough for you to relax on the island’s black sand beaches or by the pool. Things can get quite cool in the evenings though so you should bring some warmer clothes with you. The sea temperature is 17ºC, while humidity’s low. There’s 16mm of rain over four days, and you can expect 13 hours of daylight with eight hours of sunshine each day. UV levels will be high so don't forget your sun cream. Sunset’s around 8pm for much of April.