How extreme does São José's weather get?

The hottest, coldest, wettest and snowiest days São José 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 Hercilio Luz station 10 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 José has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

102°F Dec 26, 2012

That is about 19°F hotter than a normal December afternoon in São José (typical high near 84°F).

The three most extreme on record

1 102°F Dec 26, 2012

2 102°F Dec 27, 2012

3 101°F Dec 17, 1995

❄️ Coldest night

33°F Jun 21, 1998

About 25°F colder than a normal June night in São José (typical low near 58°F).

The three most extreme on record

1 33°F Jun 21, 1998

2 34°F Jul 17, 2000

3 35°F May 23, 1997

🌧️ Most rain in one day

15.47 in Jun 21, 1991

More rain in a single day than São José usually gets in the whole month of June (typical June total about 3.2 in).

The three most extreme on record

1 15.47 in Jun 21, 1991

2 13.94 in Jun 19, 1998

3 12.40 in Dec 24, 1995

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 José's record heat sits well above even a hot day for the season — December's 102°F is about 19°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 José's warmest days reach the mid-80s°F and its coldest nights drop to the mid-50s°F. But across the record it has gone as high as 102°F and as low as 33°F. A single day has delivered over 15 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 — the official 1991–2020 climate normals from INMET, Brazil's national meteorological institute, measured at Florianopolis, about 7 km from the city centre.

How we build these numbers →

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