They prefer warm locations. But it's not a must.
The location must be warm.
The Predator movies shouldn't be defined by their location hahaha. We don't need a damn jungle.Exactly, Predator can be set anywhere so long as there is good game to hunt.
Anna : "Only in the hottest years this happens."
Keyes : "Drawn by heat..."
warm climates, but it's not a must. I wouldn't be surprised if their nets regulate heat to keep them warm in colder climates. We have ways to keep warm, why can't Predators who are also intelligent enough to do so?
Anna and Keyes are not Predator experts, Keyes only has a few scraps of what we know and Anna only has myths and legends from her local area to go by.
Besides, AvP shows that they hunted in Antarctica, not exactly a tropical place. It's rare, but they do sometimes hunt in colder climates.