São Lourenço da Serra climate — normals and trends

Q: What is the climate of São Lourenço da Serra?

São Lourenço da Serra has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 1,813 mm of precipitation per year.

Q: What is the hottest day ever recorded in São Lourenço da Serra?

The hottest day measured in São Lourenço da Serra between 1940 and 2025 was 27 September 1961, reaching 35.2 °C.

Q: What is the coldest day in São Lourenço da Serra?

The coldest day measured in São Lourenço da Serra between 1940 and 2025 was 30 July 2021, at -0.2 °C.

Q: Does it snow in São Lourenço da Serra?

Almost never: São Lourenço da Serra sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of São Lourenço da Serra warmed?

Yes: São Lourenço da Serra warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in São Lourenço da Serra?

The wettest day measured in São Lourenço da Serra between 1940 and 2025 was 1 February 1983, with 113 mm of rain in 24 hours.

Q: What was the windiest day in São Lourenço da Serra?

The windiest day measured in São Lourenço da Serra between 1940 and 2025 was 10 December 2025, with winds reaching 46.5 km/h.

Q: What is the warmest month in São Lourenço da Serra?

The warmest month in São Lourenço da Serra is February (21.5 °C on average); the coldest is July (15.3 °C).

Q: How much does it rain in São Lourenço da Serra?

São Lourenço da Serra receives on average 1,813 mm of precipitation per year, spread over about 196 rainy days.

Q: Is it sunny in São Lourenço da Serra?

São Lourenço da Serra gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

São Lourenço da Serra (Brazil) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 18.5 °C and it receives 1,813 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is February (21.5 °C on average) and the coldest is July (15.3 °C). Rainfall peaks in January.

São Lourenço da Serra averages 0 frost days, 10 hot days (≥ 30 °C) and 196 rainy days per year.

São Lourenço da Serra has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.

The hottest day of the period reached 35.2 °C (on 27 September 1961) and the coldest -0.2 °C (on 30 July 2021).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

São Lourenço da SerraSão Paulo

coords: -23.85°, -46.94°
period: 1940–2025 · 86 yrs

CfbTemperate oceanicWarmest monthFebruaryColdest monthJulyWettest monthJanuaryDriest monthAugust

Mean daily temperature

18.5°C

Average daily high

23.2°C

Average daily low

15.1°C

Annual rainfall

1,813mm

Sunshine / day

9.2h

Mean relative humidity

84%

Average peak wind

15.6km/h

Seasonal range

6.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

10 d/yr

Rainy days (≥ 1 mm)

196 d/yr

Annual snowfall

0.0 cm

Average feels-like high

24.5 °C

Average feels-like low

15.2 °C

Average peak gust

35.2 km/h

Tropical nights (≥ 20 °C)

16 d/yr

Solar radiation

16.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.7 °C

since 1940

+0.2 °C per decade · r² = 0.55 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

35.2 °C

27 September 1961

Coldest day

-0.2 °C

30 July 2021

Wettest day

113 mm

1 February 1983

Windiest day

46.5 km/h

10 December 2025

Strongest gust

98.3 km/h

22 September 2025

Hottest feels-like

38.7 °C

28 December 2025

Coldest feels-like

-4.1 °C

21 July 1981

Sunniest day

13.5 h

12 December 1941

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	32.7 °C26 December 2025	2.9 °C25 June 2025	18.7 °C	1,555 mm	26	0
2024	33.1 °C26 September 2024	2.2 °C27 August 2024	19.8 °C	1,784 mm	34	0
2023	34.6 °C24 September 2023	8.0 °C17 June 2023	19.6 °C	1,634 mm	36	0
2022	31.4 °C27 October 2022	4.0 °C13 June 2022	18.3 °C	1,706 mm	13	0
2021	32.2 °C20 September 2021	-0.2 °C30 July 2021	18.5 °C	1,466 mm	12	1
2020	34.8 °C2 October 2020	6.3 °C27 May 2020	18.8 °C	1,539 mm	16	0
2019	33.2 °C2 February 2019	2.9 °C7 July 2019	19.7 °C	1,519 mm	37	0
2018	31.4 °C22 January 2018	6.8 °C21 May 2018	19.3 °C	1,481 mm	17	0
2017	33.2 °C13 October 2017	6.1 °C19 July 2017	19.4 °C	1,469 mm	27	0
2016	33.1 °C19 October 2016	2.2 °C13 June 2016	19.3 °C	1,677 mm	31	0
2015	33.7 °C20 October 2015	9.4 °C16 June 2015	20.1 °C	2,158 mm	34	0
2014	33.6 °C19 October 2014	6.4 °C3 June 2014	19.7 °C	1,274 mm	44	0
2013	32.1 °C4 December 2013	4.4 °C24 July 2013	18.8 °C	1,639 mm	21	0
2012	33.2 °C30 October 2012	4.7 °C14 July 2012	19.3 °C	1,839 mm	27	0
2011	31.8 °C1 October 2011	2.7 °C28 June 2011	18.7 °C	1,678 mm	16	0
2010	32.0 °C6 February 2010	5.8 °C7 June 2010	19.0 °C	1,880 mm	24	0
2009	31.8 °C2 March 2009	5.3 °C4 June 2009	19.2 °C	2,091 mm	10	0
2008	31.8 °C15 October 2008	5.9 °C17 June 2008	18.7 °C	1,986 mm	5	0
2007	32.8 °C21 October 2007	4.9 °C30 July 2007	19.2 °C	1,391 mm	22	0
2006	32.6 °C15 September 2006	4.8 °C6 September 2006	18.9 °C	1,532 mm	15	0
2005	31.3 °C13 October 2005	6.6 °C26 July 2005	19.1 °C	1,651 mm	8	0
2004	31.6 °C26 September 2004	5.5 °C13 June 2004	18.4 °C	1,706 mm	5	0
2003	31.7 °C9 January 2003	4.2 °C18 August 2003	19.0 °C	1,519 mm	18	0
2002	32.8 °C16 October 2002	2.9 °C3 September 2002	19.7 °C	1,518 mm	19	0
2001	30.2 °C8 January 2001	4.4 °C21 June 2001	19.1 °C	1,729 mm	5	0
2000	31.9 °C23 October 2000	1.3 °C17 July 2000	18.7 °C	1,808 mm	7	0
1999	31.4 °C7 September 1999	5.1 °C15 August 1999	18.4 °C	1,874 mm	11	0
1998	31.5 °C27 January 1998	7.9 °C17 July 1998	19.0 °C	1,924 mm	13	0
1997	32.2 °C11 November 1997	5.3 °C9 June 1997	19.1 °C	1,870 mm	11	0
1996	32.1 °C30 January 1996	5.0 °C2 August 1996	18.5 °C	2,187 mm	9	0
1995	31.6 °C25 February 1995	7.6 °C5 June 1995	19.0 °C	2,225 mm	19	0
1994	31.8 °C13 October 1994	1.9 °C26 June 1994	19.3 °C	1,727 mm	17	0
1993	31.1 °C30 November 1993	3.8 °C1 August 1993	19.0 °C	1,789 mm	8	0
1992	30.3 °C15 November 1992	4.9 °C26 August 1992	18.7 °C	1,533 mm	1	0
1991	31.2 °C16 October 1991	4.2 °C2 August 1991	18.7 °C	1,957 mm	2	0
1990	31.6 °C11 October 1990	0.8 °C29 July 1990	18.8 °C	1,821 mm	8	0
1989	30.3 °C20 February 1989	5.3 °C7 August 1989	18.2 °C	1,881 mm	4	0
1988	32.6 °C27 September 1988	4.0 °C6 June 1988	18.4 °C	1,918 mm	17	0
1987	31.5 °C23 February 1987	4.6 °C21 June 1987	18.8 °C	1,684 mm	6	0
1986	31.4 °C7 October 1986	6.1 °C2 June 1986	19.1 °C	1,944 mm	8	0
1985	30.8 °C17 November 1985	3.9 °C8 June 1985	18.6 °C	1,548 mm	7	0
1984	32.3 °C4 February 1984	1.1 °C27 August 1984	19.0 °C	1,598 mm	19	0
1983	30.2 °C17 February 1983	4.9 °C16 June 1983	18.9 °C	2,591 mm	1	0
1982	30.4 °C13 February 1982	7.7 °C30 July 1982	18.6 °C	2,026 mm	3	0
1981	30.6 °C4 February 1981	1.6 °C20 June 1981	18.2 °C	1,939 mm	4	0
1980	30.3 °C25 March 1980	4.1 °C28 June 1980	18.7 °C	1,798 mm	4	0
1979	31.0 °C7 February 1979	2.5 °C1 June 1979	18.0 °C	1,826 mm	2	0
1978	32.4 °C25 January 1978	3.8 °C2 June 1978	18.3 °C	1,486 mm	12	0
1977	31.2 °C10 February 1977	5.7 °C17 May 1977	19.2 °C	1,791 mm	5	0
1976	31.5 °C19 January 1976	4.7 °C16 August 1976	18.1 °C	2,513 mm	3	0
1975	31.1 °C14 February 1975	1.2 °C18 July 1975	18.4 °C	1,610 mm	10	0
1974	31.8 °C19 November 1974	3.1 °C17 August 1974	18.2 °C	1,834 mm	2	0
1973	31.9 °C22 February 1973	4.8 °C20 June 1973	18.7 °C	1,769 mm	12	0
1972	31.1 °C29 November 1972	4.2 °C9 July 1972	18.7 °C	1,815 mm	3	0
1971	32.6 °C28 January 1971	5.2 °C7 July 1971	18.1 °C	1,539 mm	13	0
1970	30.6 °C8 December 1970	5.8 °C2 September 1970	18.4 °C	1,634 mm	2	0
1969	31.9 °C5 January 1969	1.8 °C11 July 1969	18.5 °C	1,249 mm	5	0
1968	31.7 °C7 October 1968	4.1 °C18 May 1968	17.5 °C	1,206 mm	7	0
1967	30.0 °C2 December 1967	4.5 °C9 June 1967	18.6 °C	1,637 mm	1	0
1966	29.5 °C20 January 1966	2.4 °C7 August 1966	17.9 °C	2,150 mm	0	0
1965	30.7 °C19 September 1965	2.5 °C12 July 1965	17.8 °C	2,149 mm	5	0
1964	27.9 °C8 February 1964	5.4 °C29 July 1964	17.2 °C	1,873 mm	0	0
1963	33.3 °C15 October 1963	5.7 °C21 June 1963	18.6 °C	1,722 mm	19	0
1962	29.0 °C8 September 1962	4.3 °C7 July 1962	16.8 °C	2,187 mm	0	0
1961	35.2 °C27 September 1961	7.9 °C16 June 1961	18.9 °C	1,570 mm	24	0
1960	32.1 °C24 September 1960	6.5 °C10 July 1960	17.5 °C	1,964 mm	3	0
1959	31.0 °C7 September 1959	4.8 °C8 June 1959	18.5 °C	1,583 mm	6	0
1958	30.5 °C8 January 1958	6.2 °C22 June 1958	18.2 °C	2,054 mm	4	0
1957	30.3 °C19 October 1957	4.0 °C22 July 1957	17.8 °C	2,140 mm	2	0
1956	30.3 °C1 February 1956	5.1 °C26 August 1956	17.2 °C	1,483 mm	2	0
1955	30.2 °C30 September 1955	5.5 °C31 July 1955	17.5 °C	1,667 mm	2	0
1954	30.4 °C12 September 1954	5.8 °C21 June 1954	18.2 °C	1,876 mm	3	0
1953	29.8 °C21 August 1953	7.4 °C13 July 1953	18.2 °C	1,817 mm	0	0
1952	30.3 °C30 September 1952	4.9 °C16 July 1952	17.8 °C	1,588 mm	3	0
1951	30.4 °C26 September 1951	7.6 °C4 June 1951	17.8 °C	1,671 mm	2	0
1950	30.4 °C17 September 1950	6.7 °C12 July 1950	17.7 °C	2,318 mm	1	0
1949	28.3 °C17 March 1949	7.5 °C28 August 1949	17.5 °C	2,358 mm	0	0
1948	32.3 °C26 September 1948	6.9 °C15 June 1948	18.0 °C	1,678 mm	2	0
1947	30.3 °C8 January 1947	3.8 °C2 September 1947	17.4 °C	2,403 mm	2	0
1946	28.2 °C18 February 1946	5.9 °C4 June 1946	18.3 °C	2,465 mm	0	0
1945	28.9 °C28 September 1945	7.2 °C12 July 1945	18.1 °C	2,637 mm	0	0
1944	32.1 °C7 September 1944	8.6 °C13 July 1944	18.3 °C	1,775 mm	8	0
1943	28.8 °C1 January 1943	6.9 °C30 August 1943	17.2 °C	1,526 mm	0	0
1942	33.6 °C27 November 1942	3.8 °C19 June 1942	17.6 °C	1,508 mm	7	0
1941	29.2 °C7 January 1941	5.4 °C4 September 1941	18.2 °C	2,662 mm	0	0
1940	29.9 °C12 September 1940	7.4 °C19 August 1940	18.5 °C	2,114 mm	0	0

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

23.7 °C

+0.5 °C

Hot days (≥ 30 °C)

26 d/yr

+16

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1555 mm

-258 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	26.4 °C	+0.7 °C	344 mm	+68 mm
Feb	28.3 °C	+2.4 °C	173 mm	-78 mm
Mar	26.4 °C	+1.2 °C	147 mm	-74 mm
Apr	23.3 °C	-0.1 °C	213 mm	+109 mm
May	22.5 °C	+1.2 °C	33 mm	-49 mm
Jun	20.3 °C	-0.1 °C	103 mm	+39 mm
Jul	18.9 °C	-1.4 °C	12 mm	-51 mm
Aug	21.2 °C	-0.5 °C	30 mm	-27 mm
Sep	23.3 °C	+0.6 °C	27 mm	-79 mm
Oct	22.7 °C	-0.5 °C	153 mm	-11 mm
Nov	24.0 °C	+0.2 °C	124 mm	-57 mm
Dec	27.3 °C	+2.6 °C	195 mm	-48 mm

The year's extremes

Hottest day

32.7 °C

26 Dec 2025

Coldest day

2.9 °C

25 Jun 2025

Wettest day

37.2 mm

30 Jan 2025

Windiest day

46.5 km/h

10 Dec 2025

Strongest gust

98.3 km/h

22 Sep 2025

Hottest feels-like

38.7 °C

28 Dec 2025

Coldest feels-like

-0.1 °C

25 Jun 2025

Sunniest day

13.5 h

11 Dec 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of São Lourenço da Serra?

São Lourenço da Serra has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 1,813 mm of precipitation per year.

What is the hottest day ever recorded in São Lourenço da Serra?

The hottest day measured in São Lourenço da Serra between 1940 and 2025 was 27 September 1961, reaching 35.2 °C.

What is the coldest day in São Lourenço da Serra?

The coldest day measured in São Lourenço da Serra between 1940 and 2025 was 30 July 2021, at -0.2 °C.

Does it snow in São Lourenço da Serra?

Almost never: São Lourenço da Serra sees virtually no snow, with about 0 frost days per year.

Has the climate of São Lourenço da Serra warmed?

Yes: São Lourenço da Serra warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in São Lourenço da Serra?

The wettest day measured in São Lourenço da Serra between 1940 and 2025 was 1 February 1983, with 113 mm of rain in 24 hours.

What was the windiest day in São Lourenço da Serra?

The windiest day measured in São Lourenço da Serra between 1940 and 2025 was 10 December 2025, with winds reaching 46.5 km/h.

What is the warmest month in São Lourenço da Serra?

The warmest month in São Lourenço da Serra is February (21.5 °C on average); the coldest is July (15.3 °C).

How much does it rain in São Lourenço da Serra?

São Lourenço da Serra receives on average 1,813 mm of precipitation per year, spread over about 196 rainy days.

Is it sunny in São Lourenço da Serra?

São Lourenço da Serra gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Are there tropical nights in São Lourenço da Serra?

Yes: São Lourenço da Serra has on average 16 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in São Lourenço da Serra?

In São Lourenço da Serra, between 1940 and 2025, the highest apparent temperature reached 38.7 °C on 28 December 2025, and the lowest was -4.1 °C on 21 July 1981.

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