We went to
Icmeler in October 2 years ago,and weather for the first week was scorching,but the second week,we had 3 days of rain,and the rest slightly cooler,but no way is it cold

maybe a little chilly of an evening,were you would need a thin jacket or cardi/pashmina for the ladies.we had a fantastic time in October,doing the same things we do in Septembe,like boat trips etc,the only thing is on the second week,you will start to see bars and restaurants closing for the season,but there will still be plenty open for the end of your holiday.
Don't worry,you will have a fantastic time
Oh forgot to say,we didn't arrive home till the 4th november,so sounds like your going about the same 2 weeks that we did