I train in Minnesota. Almost all my training has been in cold dry conditions. Im on vacation in Florida and went for a 7 mile run at pace today. I way overheated at 5.5 miles and ended up walking. I didn't bring with enough water and had a cotton shirt on. Needless to say i learned a big lesson. Thanks for the tips.
Prior COVID 19 I had started running in the afternoon, around 15:30 , where in my opinion the Durban sun is the fiercest. Not at all fun in the first week , but I started getting fairly comfortable in my second week. I even achieved my best 42k time at Hillcrest. The thinking was that I will be running in sun most of the day (Comrades), so I might as well get used to it...it feels like years ago, I now have a bit of a belly for the first time in my life :(
Running through the heat is my jam. I’m in Springfield, MO and run through a paved trail through a forest by a stream. 80's and 90's. You gotta wear a visor or a well ventilated hat. Compression shirts and your ankles open. I run DOG SLOW though. 1st gear and 2nd gear mostly. So it's all 8-12 minute miles. Gradually adding distance across the summer, 6-9.5 miles. You kinda get used to it. I didn't realize people STOPPED running in the heat for years. Doesn't everyone run in the summer?