Antalya has 300 days of sunshine a year. The question is whether you want the sea at its warmest or the sights without the heat.
Warm and green, 18 to 25°C by May. The sea is still cool in March but swimmable by late May. Ideal for Termessos, Perge and the canyons.
Very hot, often above 35°C in July and August, with warm seas and busy beaches. Do your sightseeing early and spend afternoons in the water.
The best season: 25 to 30°C in September, the sea at its warmest and the crowds thinning. Still swimmable into November.
Mild and often sunny at 12 to 17°C, with rain in showers rather than days. Hotels are cheap, the ruins are empty and the mountains are snow-capped.
Late May to June and September to October are ideal. Winter is underrated for city breaks and sightseeing; July and August are for beach holidays only.
See the top things to do in Antalya, how to get there and where to stay. For the whole country, read the best time to visit Turkey.