Alexandria is a must to round out a good Egypt trip. It is beautiful all year round and the beaches serve as a refuge from the killer heat of the Cairo summer. Some parts are a little dangerous but if you have a guide (they are not expensive) you can tour around for a day or two and get a good feeling for the town. There is a great museum with findings from the sea near Alexandria- really fascinating. My favorite place is the Fort at Quat Bay. It looks like a big Lego castle and you can  more...