|This article does not cite any references or sources. (December 2009)|
Tenmon (天門 Tenmon?) is the ninja art of understanding and using meteorology as a strategic weapon. It allowed ninja to foresee weather changes and to use them as an advantage. By knowing nature's changes, animal behaviour, or atmospheric signs, one could use rainy weather or a hot sunny period as strategic elements to weaken and defeat the enemy.
|This article related to the martial arts is a stub. You can help Wikipedia by expanding it.|