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I wouldn't consider it "dangerous". 20C is cold, but you can get used to it for short periods if the air temp is warm/hot and sun is strong. I will agree that 2 to 3 hours fully submerged in 20C water sounds a bit much for me. Standing in 20C water is totally different, but having your whole body in 20C water for 2 to 3 hours, no thanks. I would be shaking and have blue lips coming out of water that cold after two or three hours.
Yep, a huge variation amongst individuals. My wife will only get in the water above around 23C and then only for a few minutes without totally submerging.
I can spend 2-3 hours at around 20C, without a sensation I recognise as cold. There is another sensation though, which I would say is a form of weariness.
Well then, of course you find 20 °C cold, that's 5 degrees colder than the average high in Miami's coldest month!
That would be akin to 2 °C in Vancouver
I'm curious, though, what's the temperature inside a bedroom in a tropical climate? It must be pretty hard to sleep.
Without AC, the upper 20s C (low-mid 80sF). On a sunny afternoon, (my room is west facing), my room can get to 90F/32C without AC (when I left the house). With AC, around 20-24C in the night and 22-26C day. Currently around 23C/73F at 01:50 am.
I have swam in the ocean with water temp of 15c. Wasn't that bad, took a few minutes of getting used too and a few hard waves to hit you in the chest lol. But overall I felt great. Air temps at the time were in the 70s. If anything the cold water was invigorating, wearing nothing but swimming trunks I went as far offshore as I could and the waves would slam my chest with cold water. I wasn't the only one in the water either.
I have swam in the ocean with water temp of 15c. Wasn't that bad, took a few minutes of getting used too and a few hard waves to hit you in the chest lol. But overall I felt great. Air temps at the time were in the 70s. If anything the cold water was invigorating, wearing nothing but swimming trunks I went as far offshore as I could and the waves would slam my chest with cold water. I wasn't the only one in the water either.
I surf ski in spring in those sort of water temperatures, and while I'm not in the water all the time, I spend a lot of time wet. I wouldn't say it's comfortable, but not really uncomfortable either. We also used to do a lot of netting of school fish when we were kids, and endured some really cold water around 12C. over a period of a few hours, Definitely not comfortable, but with physical activity, excitement and sun, it was a temperature that could be tolerated for a few hours.
Not all.indonesian people, most of rural people dont own AC - they use "natural AC", that is the breeze from outside in the night (23-26C) via opened windows
60s and low 70s can be a bit too cool in the shade if theres a breeze. Fine in the sun. For evening when the suns already down or not an issue, I like upper 70s.
You have a salad and a salmon dish, but it's 35C. Eat quickly before it's all ruined. Shrimps will be destroyed in 15 minutes. Definitely not an optional temperature.
50-80 F is about optimal to me. I don't care about having to wear a light jacket while eating outside. Rather be cool and dry than hot and sweaty. I don't get why people act like if you have to wear a light sweater, it's automatically bad weather to be outside. lol
I would guess between 18C° and 27-28C°. Anything above that and sitting outdoor especially under the sunlight would start becoming uncomfortable.
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