I just checked the 15 day forecast to get an idea of the weather for our upcoming trip to Drake Bay. I noticed the low is 65 degrees for alot of the days. I realize that 15 day forecasts are pretty much usless but what surprised me was how cool that it gets there at night. I initially told my wife that a long sleeve shirt wouldn't be needed but I'm starting to think I was wrong. For our night hikes etc both in the jungle and along the beach, should we bring some long sleeve shirts or maybe a light sweatshirt type of thing? Were trying to pack as light as possible so were trying to figure out what will be needed and not needed. Any help would be greatly appreciated.