Weather in Belo Horizonte

Belo Horizonte is in Brazil at 19.9°S. The 2001–2020 NASA POWER daily record describes a monsoon climate with a sharp wet-dry split. Rain is the monsoon runs from November to March, inside an annual total of 1211 mm. The wettest month is December at 266 mm; the driest is July at 7 mm.

October is the warmest month (average 22.9°C, high 29.7°C) and June is the coolest (average 18.5°C, low 12.3°C). From the coolest night in June (11.7°C) to the hottest afternoon in October (29.7°C), the raw range is 18.0°C. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are June, July, and August.

When Belo Horizonte gets wet

The monsoon in Belo Horizonte starts in November and ends in March (November, December, January, February, and March). December is the core of it at 266 mm. July is the other extreme, with 7 mm.

Humidity peaks near 84%. That usually lines up with the wetter months rather than the hottest ones.

How warm Belo Horizonte gets

Belo Horizonte has a 4.4°C gap between its coolest monthly average (18.5°C in June) and its warmest (22.9°C in October). That is a southern-hemisphere pattern.

Across the year the mean afternoon high is 26.6°C. If you want the smallest day–night shock, look at months where the high and low sit close together; October nights still hold 16.1°C.

The calendar in Belo Horizonte

In February, Belo Horizonte averages 26.3°C by day and 17.3°C at night, with 132 mm of rain. April stands apart from the months beside it: 25.7°C / 15.8°C and 53 mm. June is the coolest month, with lows around 12.3°C and highs near 24.8°C. Rainfall is 11 mm. July is the driest month, averaging only 7 mm across 1 rainy days. Highs sit near 25.3°C.

Peak heat arrives in October: 29.7°C by day, 16.1°C at night, and 64% humidity. November is when the monsoon typically starts in Belo Horizonte: highs near 27.2°C, and rainfall jumps to 190 mm (21 rainy days). December is the wettest month — 266 mm and 24 rainy days, with 83% humidity.

When the score favours a visit

The three months with the highest comfort score are June, July, and August: June (18.5°C average, 11 mm, 72% humidity); July (18.5°C average, 7 mm, 66% humidity); August (19.8°C average, 18 mm, 61% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the monsoon itself — fewer crowds, greener landscape, heavier rain — aim at November–March instead of the score.

Belo Horizonte and other cities in Brazil

Rio de Janeiro is about 341 km away: Belo Horizonte is 3.3°C cooler than Rio de Janeiro in its hottest month and 259 mm drier over the year than Rio de Janeiro. Rio de Janeiro’s wettest month is December (232 mm) versus December here.

Guarulhos is about 476 km away: Belo Horizonte is 0.5°C cooler than Guarulhos in its hottest month and 169 mm drier over the year than Guarulhos. Guarulhos’s wettest month is January (228 mm) versus December here.

São Paulo is about 490 km away: Belo Horizonte is about as warm as São Paulo at the hot peak and 142 mm drier over the year than São Paulo. São Paulo’s wettest month is January (230 mm) versus December here.