How extreme does São João de Meriti's weather get?

The hottest, coldest, wettest and snowiest days São João de Meriti has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 34 years of daily weather observations (1991–present), from the Campo Delio Jardim De Mattos station 8 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days São João de Meriti has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

108°F Feb 16, 1994

That is about 14°F hotter than a normal February afternoon in São João de Meriti (typical high near 93°F).

The three most extreme on record

1 108°F Feb 16, 1994

2 108°F Feb 17, 1994

3 108°F Dec 30, 1997

❄️ Coldest night

41°F Aug 25, 1992

About 21°F colder than a normal August night in São João de Meriti (typical low near 62°F).

The three most extreme on record

1 41°F Aug 25, 1992

2 45°F Jul 15, 1994

3 46°F Jul 27, 1993

🌧️ Most rain in one day

19.65 in May 24, 1997

More rain in a single day than São João de Meriti usually gets in the whole month of May (typical May total about 1.9 in).

The three most extreme on record

1 19.65 in May 24, 1997

2 15.75 in Apr 20, 1994

3 4.88 in Feb 14, 1996

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

São João de Meriti's record heat sits well above even a hot day for the season — February's 108°F is about 14°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, São João de Meriti's warmest days reach the low 90s°F and its coldest nights drop to the low 60s°F. But across the record it has gone as high as 108°F and as low as 41°F. A single day has delivered over 20 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Galeao Antonio Carlos Jobim, a weather station, about 13 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →

← São João de Meriti city detail