Historical weather data, all-time temperature records, and monthly climate averages for Guarulhos, São Paulo, Brazil. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Guarulhos is a wet one — there's a 71% chance of rain, making it one of the more reliably rainy dates of the transitional autumn season. Temperatures typically settle in between 63° and 77°, though the range across 66 years of data has swung from a chilly 56° low in 2020 to a warm 85° high in 2019.
Guarulhos has seen some genuine extremes over its 65-year record: a scorching 101° in September 1961 on the hotter end, and a near-freezing 33° in July 2021 on the colder end — rare for a city at this elevation just outside São Paulo. The wettest single day on record dumped 5.35 inches on February 25, 2010, a reminder of just how intense the summer rainy season can get.
Guarulhos stays mild year-round, with average highs ranging only from 70° in the cool season (late May through June) to 80° in mid-February. The wettest stretch is the holiday week between Christmas and New Year's, averaging over 2 inches of rain — pack accordingly if you're visiting then. For drier, still-comfortable weather, late autumn months like May and June offer the best trade-off.