Trees behave in different ways on microclimate due to mainly distinct features of each species and
planting strategies especially in the tropics. This paper quantifies the daily and seasonal microclimate
behavior of various tree species with different planting design either individual or in clusters. This specific
knowledge is an important step in the development of urban design guidelines based on the shading of
trees and climate adaptation in urban areas in the tropics. It focuses on human thermal comfort based
on the physiologically equivalent temperature (PET) for different species. Twelve species were analyzed:
Handroanthus chrysotrichus (Mart. ex A.DC.) Mattos, Jacaranda mimosaefolia D. Don., Syzygium cumini
L., Mangifera indica L., Pinus palustris L., Pinus coulteri L.; Lafoensia glyptocarpa L., Caesalpinia pluviosa F.,
Spathodea campanulata P. Beauv., Tipuana tipu F., Delonix indica F. and Senna siamea L. The results show
that shading of trees can influence significantly human thermal comfort expressed by (PET). The species
C. pluviosa F. presents the best possibility in terms of PET because it can reduce between 12 and 16 ◦C for
individual trees cluster can reduce between 12.5 and 14.5 ◦C. Appropriate vegetation used for shading
public and private areas is essential to mitigate heat stress and can create better human thermal comfort
especially in cities. The results can be seen as a possibility of improvement of outdoor thermal comfort
conditions and as an important step in order to achieve sustainability in cities.