Cooler Climates, not COLD climates. Their is a significant difference, since in Kanto, its also cool because its a temperate region (Same with Johto, Unova and Kalos).not sure if it was the same person.
But ot both are wrong. the tweat mentioned it being cold.
Set your sights on Sinnoh, nature lovers! This region is beloved for its cooler climates and majestic mountains.Or stay inside and study at the Pokémon Academy!
In the Winter, its cold. When their is hard wind, its cool outside and not cold.