In fact, the rainy season is one of our favourite times of year in northern Thailand. Showers keep the temperatures down, the countryside is green and lush, the birds and wildlife more active, and there are far fewer people around.
While the cool winters are a pleasant time to visit, it’s peak season so it is much more crowded and prices go up. Note that in mountainous areas, the temperatures in December and January can plunge to as low as zero. Be prepared!