We came back on the 16th May and it was very cool at night - the boys from the bars had their jackets on. I've been going to Icmeler for years and dont ever remember feeling as cold at night. My friend is there at the moment and says the daytime weather is sooo hot, and think the night time temperature is better now too. By the time you go next Monday I'm sure it'll be much warmer both day and night.