BR Annual Mean Temperature Calculator

Annual Mean Temperature — Brazil

To get the annual mean temperature you just average the twelve monthly means: T_year = (Σ T_month) / 12. And each monthly mean comes from T_month = (T_max + T_min) / 2 averaged across the days of that month. INMET’s current climatological normals (1991–2020) put Brazilian annual means anywhere from about 14°C in the southern highlands (São Joaquim/SC, for instance) up to roughly 28°C in the northern Amazon and the semi-arid Northeast.

Because Brazil sits at low latitude, its yearly thermal range stays small, usually under 8°C between the hottest and coldest months. The bioclimatic zoning in ABNT NBR 15220-3 splits the country into 8 zones (Z1–Z8) according to annual mean temperature and humidity, and that zoning is what guides passive thermal design for homes.

Applications

Architects rely on it for NBR 15220 bioclimatic zones and NBR 15575 thermal performance. It also feeds agriculture (crop suitability, thermal sum / GDD), public-health heat-stress indices, tourism, and climate-change attribution studies.

FAQ

Which Brazilian city has the highest annual mean? Coastal stations in Rio Grande do Norte, Ceará and northern Amazonas tend to log around 27–28°C. Bom Jesus do Piauí is often at the front of the pack, peaking above 28°C.

And the lowest? São Joaquim (SC) and Urupema (SC) hover around 14°C on average, dropping below zero when winter cold waves roll through.

What is bioclimatic zone Z8? It's the hottest, most humid zone in NBR 15220, taking in most of the Amazon and the Northeast coast. Here the design priorities are cross-ventilation, shading and light walls and roofs.