Santos climate

Name: Santos
Address: BR

Santos is warmest in February, with average highs of 29 °C, and coldest in July, when nights average 17 °C. January is the wettest month (325 mm) and August the driest (74 mm). Figures are 1991–2020 climate normals.

Across a full year Santos averages 2,101 mm of rain and 211 days above 25 °C.

Brazil · population 418,608 · 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 29 °C
Coldest month July 17 °C
Driest month August 74 mm
Wettest month January 325 mm
Least cloud July 54 % cloud
Hottest on record October 40 °C
Coldest on record July 8.6 °C
Warmest sea February 27 °C

What to expectSantos through the year

Santos has a clear annual cycle: average daily highs run from 23 °C in July to 29 °C in February, a swing of 6.4 °C in mean temperature across the year.

Counted across a normal year, 211 days a year reach 25 °C, 41 of them reach 30 °C. The warmest reading in the 1991–2020 record is 40 °C, in October.

Rain is strongly seasonal. January averages 325 mm against 74 mm in August — 4.4 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Santos is warmest in February at 27 °C and coldest in August at 20 °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	28.5 °C	325 mm	77 %
February	28.7 °C	303 mm	73 %
March	27.8 °C	288 mm	69 %
April	26.6 °C	133 mm	61 %
May	24.5 °C	104 mm	59 %
June	23.8 °C	81 mm	56 %
July	23.3 °C	90 mm	54 %
August	23.5 °C	74 mm	56 %
September	24.0 °C	128 mm	69 %
October	25.0 °C	152 mm	77 %
November	25.8 °C	190 mm	75 %
December	27.5 °C	232 mm	75 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.5 °C	23.5 °C	25.7 °C	35.5 °C	18.2 °C	29	9
February	28.7 °C	23.6 °C	25.9 °C	34.9 °C	19.1 °C	27	8
March	27.8 °C	22.9 °C	25.0 °C	35.7 °C	18.1 °C	28	5
April	26.6 °C	21.3 °C	23.6 °C	35.2 °C	14.6 °C	22	3
May	24.5 °C	18.9 °C	21.3 °C	32.9 °C	12.5 °C	12	1
June	23.8 °C	17.5 °C	20.2 °C	33.5 °C	8.7 °C	10	1
July	23.3 °C	16.7 °C	19.5 °C	33.0 °C	8.6 °C	9	1
August	23.5 °C	16.9 °C	19.8 °C	36.5 °C	9.9 °C	9	2
September	24.0 °C	18.1 °C	20.7 °C	39.1 °C	10.1 °C	9	2
October	25.0 °C	19.6 °C	22.0 °C	39.7 °C	13.9 °C	14	2
November	25.8 °C	20.6 °C	23.0 °C	35.1 °C	14.8 °C	17	3
December	27.5 °C	22.3 °C	24.7 °C	35.6 °C	15.9 °C	25	5

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	325 mm	25	13 h/day	77 %	85 %	12 km/h	26.5 °C
February	303 mm	22	13 h/day	73 %	86 %	12 km/h	27.0 °C
March	288 mm	24	12 h/day	69 %	86 %	12 km/h	26.6 °C
April	133 mm	15	12 h/day	61 %	85 %	12 km/h	25.7 °C
May	104 mm	13	11 h/day	59 %	84 %	12 km/h	23.6 °C
June	81 mm	9	11 h/day	56 %	83 %	12 km/h	21.9 °C
July	90 mm	9	11 h/day	54 %	83 %	12 km/h	20.7 °C
August	74 mm	9	11 h/day	56 %	84 %	13 km/h	20.2 °C
September	128 mm	14	12 h/day	69 %	85 %	14 km/h	20.9 °C
October	152 mm	17	13 h/day	77 %	86 %	14 km/h	22.2 °C
November	190 mm	18	13 h/day	75 %	85 %	14 km/h	23.3 °C
December	232 mm	22	14 h/day	75 %	85 %	14 km/h	25.1 °C

How Santos 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
Santos	29 °C	17 °C	2,101 mm	211
Guarujá · Brazil	29 °C	17 °C	1,861 mm	208
Praia Grande · Brazil	29 °C	16 °C	2,135 mm	212
São Bernardo do Campo · Brazil	26 °C	12 °C	1,982 mm	141
Itaquaquecetuba · Brazil	27 °C	12 °C	1,448 mm	169
São Paulo · Brazil	27 °C	12 °C	1,288 mm	172
Guarulhos · Brazil	27 °C	12 °C	1,383 mm	163

Planning a trip? See the best time to visit Santos.

QuestionsCommon questions about Santos’s climate

When is the best time to visit Santos?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, August 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 Santos get?

In February, the warmest month, daily highs average 29 °C. About 41 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.

How cold does it get in winter?

Nights average 17 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Santos?

January, averaging 325 mm over 25 days with rain. The driest month is August with 74 mm. The year as a whole averages 2,101 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 Santos 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
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.