In Antalya in April, the air temperature keeps at the level of +22 ° C during the day, and at +12 ° C at night. But the water temperature is +18 .. + 19 ° C. If this temperature suits you, then you can swim in the sea, but it's better to wait until May and its end:)

The current forecast for the coming days at the resorts of Turkey can be found on the page "Weather in Turkey."