It's tough in hot climates. There's plenty of heat to go around. And there are lots of people who live in hot climates who, for latency reasons, need servers near them.

Thus there are kind of two cases to solve for. You can stick a data center in Northern Europe, and that heat might be valuable enough that your approach could be to try to reclaim it. If you stick a data center in Singapore, you'd better focus on generating less heat in the first place or finding better ways to get rid of it.