It is always very hot and humid in Cartegena but 3 things helped immensely, I brought flavored electrocyte powder to add to water bottle and fights the dehydration that happens even with drinking tons of water. We had cooling towels like many golfers use that you wet in the morning, throw in a ziploc and take them out for around your neck when needed. Ours stayed cool enough to help all day. The last thing was invaluable for me, a rechargeable hand fan that is small enough to fit in my tiny purse and has 5 speeds. Was so nice to point it down my neck and in my face. I won’t claim to have been completely refreshed but ended up a lot better than many people on our tour.