Climate
The temperature in this area is approximately 25 degrees Celsius all the year round; it is about 14 - 19 degrees Celsius on November to February, the highest temperature is 39 degree Celsius on April and heavy rain on May to September approximately 1,184 mm. of rain all the year round.

Flora and Fauna
The forest is productive and consists of semi-evergreen forest, montane forest, pine forest (coniferous forest), mixed forest and deciduous forest which have many kinds of economically valuable plants such as Malabar ironwood, wild Euphorbiaceae, Yang, Burmese ebony, Lagerstroemia, Teak wood, wild champak and emblic myrabolan etc. And more importantly, there are rare floras such as Impatiens jurpioides T. Shimizu and Rhododendronwhich which can be normally found in Doi Pha Hhom Bhog.
The forest of Mae Fang National Park is on complicated mountain and in contact with the forest of Myanmar so that makes many kinds of wild animal migrating into this area regularly. And because it is the productive forest so that makes it have a number of animals, for examples, mammals such as barking deer, deer, bear, wild bore, loris and mountain goat—a reserve animal of Thailand, birds such as turtledove and purple cochoa--found only in Northern Thailand, and nearly extinct butterfly such as Imperial Butterfly, Kaiser Butterfly and Phutan Butterfly.