We did Ephesus in August- baking but brilliant, take a brolly as a parasol and plenty of water. Also loads of film for your camera, the site is enormous and all of it is briliant. There are even roman lavatories! It is the most amazing place and not to be missed! I thought the ice creams were VERY expensive in there, but vital, then I realised they were the same as the tourist prices in central London!
Jan