rainforest dry rainforest 2024-12-09T17:07:25Z This is an odd class, and the definitional boundaries / differentia are unclear. A rainforest which has a more open canopy and less rainfall than other rainforest types. Dry rainforests have a more open canopy layer than other rainforests, and are found in areas of lower rainfall (630–1,100 mm (25–43 in)). They generally have two layers of trees.