I'd say it depends where you are living if you're talking about water in the outdoors such as oceans, or rivers. Because you could just refrigerate water to make it cold and boil it to make it hot. Since I'm currently living in the United Arab Emirates the water in the oceans is warm or sometimes even hot in the months of June, July, August, September but the water will cool down to a nice 25 Degrees in the winter months of December, January, and February. Ps jealous of ppl that have rivers in their countries there's no rivers in the whole Arabian peninsula.
