Guamal, MetaGuamal is a town and municipality in the Meta Department, Colombia.ClimateGuamal has a tropical [rainforest climate]. The climate is hot and sometimes humid, though its proximity to the foothills of the Oriental Andes brings mild breezes at nightfall. Average temperature is. Although January is almost dry enough for tropical monsoon classification, the other eleven months all receive over of rain, and for eight months from April to November monthly rainfall consistently exceeds.