I live in BKK and the cold water here in my apartment is anything but. It's probably around 24C/25C (and that's first thing in the morning!). Haven't processed here yet, but when I do, I'll just adjust: time vs. temp.
I have a table back in AU that I use regularly (when I get back there) and it is invaluable to me, especially during an AU loooong HOT summer. . . . . .