The park is 400 meters above sea level and as a result reasonably cool all year round. During the winter season, the temperatures can drop to 4 degrees Celsius. Because of its cool conditions Khao Yai’s 50 kilometers of hiking trails are a favorite and the park receives a lot of birdwatchers. The park also sports some breathtaking waterfalls and the best time to see them is the rainy season from May to October. The 80-metre-high Hew Suwat Waterfall is particularly a favorite of visitors.