São José climate

Name: São José
Address: BR

São José is warmest in February, with average highs of 28 °C, and coldest in July, when nights average 13 °C. January is the wettest month (221 mm) and August the driest (89 mm). Figures are 1991–2020 climate normals.

Across a full year São José averages 1,666 mm of rain and 151 days above 25 °C.

Brazil · population 295,658 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month February 28 °C
Coldest month July 13 °C
Driest month August 89 mm
Wettest month January 221 mm
Least cloud July 59 % cloud
Hottest on record January 37 °C
Coldest on record July 2.9 °C
Warmest sea February 26 °C

What to expectSão José through the year

São José has a clear annual cycle: average daily highs run from 20 °C in July to 28 °C in February, a swing of 8.7 °C in mean temperature across the year.

Counted across a normal year, 151 days a year reach 25 °C, 25 of them reach 30 °C. The warmest reading in the 1991–2020 record is 37 °C, in January.

Rain is strongly seasonal. January averages 221 mm against 89 mm in August — 2.5 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off São José is warmest in February at 26 °C and coldest in August at 18 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	27.9 °C	221 mm	74 %
February	27.9 °C	215 mm	72 %
March	27.0 °C	146 mm	68 %
April	25.3 °C	93 mm	62 %
May	22.4 °C	111 mm	60 %
June	20.7 °C	99 mm	61 %
July	19.9 °C	91 mm	59 %
August	20.8 °C	89 mm	61 %
September	21.5 °C	150 mm	73 %
October	23.3 °C	143 mm	79 %
November	24.8 °C	143 mm	74 %
December	27.0 °C	164 mm	74 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	27.9 °C	21.9 °C	24.5 °C	37.4 °C	16.1 °C	26	7
February	27.9 °C	22.1 °C	24.6 °C	36.3 °C	15.8 °C	25	6
March	27.0 °C	21.2 °C	23.7 °C	34.1 °C	13.0 °C	24	4
April	25.3 °C	19.0 °C	21.8 °C	32.4 °C	8.5 °C	16	1
May	22.4 °C	15.9 °C	18.8 °C	30.6 °C	8.6 °C	5	0
June	20.7 °C	13.8 °C	16.8 °C	29.1 °C	4.1 °C	3	0
July	19.9 °C	12.8 °C	15.9 °C	29.0 °C	2.9 °C	2	0
August	20.8 °C	13.6 °C	16.7 °C	31.3 °C	4.6 °C	3	0
September	21.5 °C	15.4 °C	18.0 °C	32.4 °C	5.7 °C	4	0
October	23.3 °C	17.3 °C	19.9 °C	34.6 °C	10.9 °C	8	1
November	24.8 °C	18.7 °C	21.4 °C	33.7 °C	11.3 °C	14	1
December	27.0 °C	20.7 °C	23.5 °C	36.5 °C	13.3 °C	22	5

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	221 mm	22	14 h/day	74 %	81 %	13 km/h	25.6 °C
February	215 mm	20	13 h/day	72 %	82 %	12 km/h	25.7 °C
March	146 mm	19	12 h/day	68 %	82 %	12 km/h	25.3 °C
April	93 mm	12	11 h/day	62 %	82 %	12 km/h	23.9 °C
May	111 mm	10	11 h/day	60 %	82 %	11 km/h	21.6 °C
June	99 mm	9	10 h/day	61 %	84 %	11 km/h	19.5 °C
July	91 mm	9	11 h/day	59 %	84 %	11 km/h	17.8 °C
August	89 mm	9	11 h/day	61 %	83 %	13 km/h	17.7 °C
September	150 mm	13	12 h/day	73 %	82 %	14 km/h	18.8 °C
October	143 mm	15	13 h/day	79 %	82 %	14 km/h	20.5 °C
November	143 mm	16	13 h/day	74 %	79 %	14 km/h	22.3 °C
December	164 mm	18	14 h/day	74 %	80 %	14 km/h	24.1 °C

How São José compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
São José	28 °C	13 °C	1,666 mm	151
Palhoça · Brazil	28 °C	13 °C	1,730 mm	154
Florianópolis · Brazil	28 °C	14 °C	1,658 mm	138
Itajaí · Brazil	27 °C	14 °C	1,664 mm	131
São José · Brazil	28 °C	11 °C	2,043 mm	167
Blumenau · Brazil	28 °C	13 °C	1,744 mm	169
Jaraguá do Sul · Brazil	28 °C	13 °C	1,767 mm	172

Planning a trip? See the best time to visit São José.

QuestionsCommon questions about São José’s climate

When is the best time to visit São José?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, October, November sit closest to 20 °C on average, February is the warmest month and August the driest. The month-by-month table above has the full picture.

How hot does São José get?

In February, the warmest month, daily highs average 28 °C. About 25 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average 13 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in São José?

January, averaging 221 mm over 22 days with rain. The driest month is August with 89 mm. The year as a whole averages 1,666 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in São José rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: -27.615°, -48.627° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.