Guamal has a tropical rainforest climate (Köppen Af). The climate is hot and sometimes humid, though its proximity to the foothills of the Oriental Andes brings mild breezes at nightfall.
The tropical rainforest climate in Guamal is notable for its warmth and humidity, although the region's geography plays a significant role in moderating these conditions, particularly at night when gentle breezes from the Oriental Andes provide relief.