[1] Average annual rainfall ranges from 1000 to 1500 mm, generally lower in the north and higher in the south and east.

Manilkara zapota is the most common forest tree; others include Brosimum alicastrum, Pimenta dioica, Lonchocarpus castilloi, Pouteria campechiana, Swietenia macrophylla, Alseis yucatanensis, Zuelania guidonia, Cedrela odorata, Swartzia cubensis, Orbignya cohune, Aspidosperma desmanthum, and Aspidosperma megalocarpon.

The canopy is 8 to 10 meters high, and about half the trees lose their leaves during the dry season.

Typical trees include Cameraria latifolia, Vachellia pringlei, Dalbergia glabra, Pisonia aculeata, Pithecellobium dulce, Pseudophoenix sargentii, Haematoxylon campechianum, and Acoelorraphe wrightii.

[5] Native primates include the Yucatan spider monkey (Ateles geoffroyi yucatanensis) and Guatemalan black howler (Alouatta pigra).