It is not that bad! Really I am here now and last night, we walked out of dinner, going in warmish and came out and we were freezing, had goosebumps. Today walking around AK we have not been hot once, infact this morning we were so cold at the bus stop we were shivering and once on killamanjaro safari we were so cool we went to the shops looking for a jumper! Back at the hotel now and it's 6pm and the breeze coming in the window from outside is quite cool, I have a cardigan on! So days can be warm and humid. Last week was much warmer. Two weeks ago it was warmer again (in the low 30's). Once day at Epcot we were so hot we went back to the hotel. But most days until now it has been just right, not too hot, not too cold and I live in QLD. Two weeks ago it was like a Gold Coast summer day, today it was more like a Gold Coast spring/autumn day. If going in October I would certainly take a cardigan or light jacket or a hoodie for the evenings (we haven't worn jeans, but a we have needed long sleeves from early evening the last few nights and early morning