São Lourenço do Sul climate — normals and trends

Q: What is the climate of São Lourenço do Sul?

São Lourenço do Sul has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.6 °C and it receives 1,291 mm of precipitation per year.

Q: What is the hottest day ever recorded in São Lourenço do Sul?

The hottest day measured in São Lourenço do Sul between 1940 and 2025 was 16 November 1985, reaching 39.0 °C.

Q: What is the coldest day in São Lourenço do Sul?

The coldest day measured in São Lourenço do Sul between 1940 and 2025 was 12 July 2007, at 0.1 °C.

Q: Does it snow in São Lourenço do Sul?

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

Q: Has the climate of São Lourenço do Sul warmed?

Yes: São Lourenço do Sul warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in São Lourenço do Sul?

The wettest day measured in São Lourenço do Sul between 1940 and 2025 was 21 May 1987, with 116 mm of rain in 24 hours.

Q: What was the windiest day in São Lourenço do Sul?

The windiest day measured in São Lourenço do Sul between 1940 and 2025 was 5 June 1992, with winds reaching 61.0 km/h.

Q: What is the warmest month in São Lourenço do Sul?

The warmest month in São Lourenço do Sul is January (23.7 °C on average); the coldest is July (13.4 °C).

Q: How much does it rain in São Lourenço do Sul?

São Lourenço do Sul receives on average 1,291 mm of precipitation per year, spread over about 133 rainy days.

Q: Is it sunny in São Lourenço do Sul?

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

São Lourenço do Sul (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.6 °C and it receives 1,291 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 January (23.7 °C on average) and the coldest is July (13.4 °C). Rainfall peaks in September.

São Lourenço do Sul averages 0 frost days, 18 hot days (≥ 30 °C) and 133 rainy days per year.

São Lourenço do Sul has warmed by +0.8 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.

The hottest day of the period reached 39.0 °C (on 16 November 1985) and the coldest 0.1 °C (on 12 July 2007).

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 do SulRio Grande do Sul

coords: -31.37°, -51.98°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthSeptemberDriest monthDecember

Mean daily temperature

18.6°C

Average daily high

22.2°C

Average daily low

15.5°C

Annual rainfall

1,291mm

Sunshine / day

9.2h

Mean relative humidity

79%

Average peak wind

20.9km/h

Seasonal range

10.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

18 d/yr

Rainy days (≥ 1 mm)

133 d/yr

Annual snowfall

0.0 cm

Average feels-like high

22.9 °C

Average feels-like low

14.7 °C

Average peak gust

37.1 km/h

Tropical nights (≥ 20 °C)

72 d/yr

Solar radiation

16.6 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.8 °C

since 1940

+0.1 °C per decade · r² = 0.25 · 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

39.0 °C

16 November 1985

Coldest day

0.1 °C

12 July 2007

Wettest day

116 mm

21 May 1987

Windiest day

61.0 km/h

5 June 1992

Strongest gust

108.7 km/h

5 June 1992

Hottest feels-like

44.5 °C

22 January 2022

Coldest feels-like

-4.1 °C

14 July 1991

Sunniest day

13.9 h

21 December 1954

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.2 °C11 February 2025	1.9 °C1 July 2025	18.8 °C	1,453 mm	31
2024	34.0 °C12 February 2024	3.6 °C9 July 2024	19.2 °C	1,467 mm	17
2023	36.4 °C13 February 2023	4.1 °C15 July 2023	19.4 °C	1,606 mm	39
2022	37.1 °C16 January 2022	3.6 °C19 June 2022	18.4 °C	1,142 mm	30
2021	34.9 °C22 November 2021	3.4 °C30 July 2021	18.8 °C	1,149 mm	17
2020	34.9 °C11 December 2020	2.6 °C15 July 2020	18.9 °C	1,085 mm	27
2019	35.9 °C2 January 2019	2.7 °C7 July 2019	19.5 °C	1,452 mm	38
2018	34.8 °C5 January 2018	2.8 °C17 June 2018	19.1 °C	1,223 mm	23
2017	33.5 °C5 February 2017	3.7 °C18 July 2017	19.8 °C	1,384 mm	27
2016	34.2 °C25 January 2016	3.0 °C13 June 2016	18.5 °C	1,189 mm	28
2015	33.2 °C6 January 2015	3.8 °C5 July 2015	19.3 °C	1,762 mm	17
2014	37.7 °C7 February 2014	3.1 °C14 August 2014	19.5 °C	1,423 mm	42
2013	35.2 °C29 December 2013	0.9 °C25 July 2013	18.5 °C	1,103 mm	21
2012	36.0 °C25 December 2012	0.5 °C9 June 2012	19.3 °C	1,089 mm	32
2011	33.1 °C16 January 2011	1.8 °C5 August 2011	18.5 °C	1,186 mm	16
2010	37.1 °C3 February 2010	2.8 °C10 August 2010	18.9 °C	1,200 mm	29
2009	32.0 °C7 January 2009	2.1 °C26 July 2009	18.5 °C	1,153 mm	16
2008	33.1 °C10 January 2008	3.0 °C18 June 2008	18.5 °C	1,298 mm	14
2007	33.7 °C1 March 2007	0.1 °C12 July 2007	18.6 °C	1,468 mm	30
2006	37.0 °C8 January 2006	3.5 °C22 August 2006	19.1 °C	1,083 mm	31
2005	35.2 °C23 November 2005	3.0 °C20 July 2005	19.2 °C	1,197 mm	27
2004	32.9 °C13 February 2004	2.7 °C14 June 2004	18.7 °C	1,070 mm	22
2003	35.3 °C31 January 2003	3.7 °C26 August 2003	18.7 °C	1,315 mm	16
2002	33.6 °C17 March 2002	3.4 °C12 July 2002	19.0 °C	1,600 mm	22
2001	33.5 °C10 February 2001	4.6 °C28 July 2001	19.4 °C	1,568 mm	22
2000	33.1 °C26 December 2000	1.0 °C14 July 2000	18.3 °C	1,327 mm	19
1999	34.3 °C27 December 1999	4.3 °C14 August 1999	18.1 °C	1,334 mm	11
1998	33.5 °C21 January 1998	5.0 °C26 June 1998	18.3 °C	2,063 mm	12
1997	33.6 °C29 January 1997	1.9 °C28 June 1997	18.8 °C	1,589 mm	17
1996	32.7 °C11 January 1996	0.2 °C30 June 1996	18.2 °C	1,274 mm	10
1995	37.7 °C18 December 1995	1.8 °C5 August 1995	18.4 °C	1,455 mm	18
1994	35.6 °C13 December 1994	2.4 °C28 June 1994	18.7 °C	1,517 mm	18
1993	32.0 °C25 January 1993	1.3 °C16 July 1993	18.5 °C	1,394 mm	20
1992	34.3 °C20 February 1992	2.8 °C2 August 1992	18.4 °C	1,310 mm	16
1991	33.3 °C28 February 1991	0.3 °C14 July 1991	18.8 °C	1,072 mm	21
1990	38.1 °C30 January 1990	2.6 °C29 August 1990	18.4 °C	1,373 mm	22
1989	33.9 °C7 February 1989	4.0 °C3 July 1989	18.5 °C	990 mm	19
1988	34.6 °C22 March 1988	1.8 °C26 June 1988	18.0 °C	994 mm	27
1987	34.2 °C2 December 1987	3.2 °C24 June 1987	18.5 °C	1,721 mm	28
1986	35.6 °C16 January 1986	4.9 °C14 May 1986	19.3 °C	1,229 mm	28
1985	39.0 °C16 November 1985	5.3 °C11 July 1985	19.1 °C	1,488 mm	21
1984	33.5 °C4 February 1984	3.3 °C29 June 1984	18.4 °C	1,759 mm	24
1983	33.2 °C30 December 1983	2.8 °C8 June 1983	18.3 °C	1,404 mm	14
1982	32.4 °C11 December 1982	4.8 °C16 June 1982	18.8 °C	1,234 mm	13
1981	33.1 °C28 January 1981	4.0 °C15 June 1981	18.8 °C	1,076 mm	12
1980	36.4 °C23 January 1980	2.0 °C31 July 1980	18.8 °C	1,270 mm	21
1979	33.1 °C25 January 1979	3.1 °C18 July 1979	17.9 °C	1,187 mm	10
1978	34.3 °C19 January 1978	4.1 °C31 August 1978	18.6 °C	1,277 mm	18
1977	33.1 °C16 February 1977	4.7 °C2 September 1977	19.3 °C	1,662 mm	19
1976	33.5 °C13 December 1976	2.9 °C15 August 1976	18.1 °C	1,388 mm	20
1975	36.4 °C12 February 1975	3.6 °C18 July 1975	18.6 °C	1,135 mm	18
1974	33.4 °C19 January 1974	3.3 °C17 August 1974	18.5 °C	1,281 mm	20
1973	33.6 °C24 February 1973	5.0 °C19 July 1973	18.6 °C	1,585 mm	14
1972	33.2 °C12 January 1972	2.8 °C4 August 1972	18.6 °C	1,796 mm	15
1971	35.2 °C20 December 1971	2.1 °C17 June 1971	18.4 °C	995 mm	26
1970	34.7 °C27 December 1970	4.4 °C3 July 1970	18.8 °C	1,209 mm	21
1969	33.7 °C31 January 1969	2.0 °C19 June 1969	18.5 °C	1,092 mm	15
1968	35.8 °C12 December 1968	4.2 °C3 September 1968	18.5 °C	1,077 mm	29
1967	33.7 °C10 November 1967	2.2 °C14 June 1967	18.6 °C	1,397 mm	11
1966	32.3 °C5 February 1966	2.6 °C1 July 1966	17.9 °C	1,423 mm	8
1965	33.4 °C15 January 1965	1.7 °C12 July 1965	18.2 °C	1,473 mm	21
1964	33.2 °C26 January 1964	3.0 °C10 July 1964	17.7 °C	949 mm	13
1963	33.1 °C18 February 1963	2.9 °C23 July 1963	18.6 °C	1,488 mm	15
1962	33.9 °C28 November 1962	4.1 °C20 July 1962	17.9 °C	793 mm	12
1961	32.8 °C20 January 1961	2.9 °C16 June 1961	18.8 °C	1,469 mm	20
1960	32.7 °C13 February 1960	2.2 °C25 June 1960	17.9 °C	1,214 mm	13
1959	30.8 °C4 February 1959	3.8 °C11 June 1959	18.1 °C	1,669 mm	3
1958	32.8 °C14 February 1958	4.9 °C25 May 1958	18.4 °C	1,196 mm	6
1957	32.6 °C29 December 1957	3.1 °C3 August 1957	18.3 °C	1,261 mm	6
1956	33.0 °C5 February 1956	4.7 °C21 July 1956	17.7 °C	922 mm	6
1955	33.3 °C6 February 1955	2.1 °C9 July 1955	17.6 °C	1,117 mm	8
1954	32.3 °C4 March 1954	4.8 °C6 July 1954	18.4 °C	1,572 mm	10
1953	35.2 °C5 January 1953	3.4 °C25 July 1953	18.8 °C	1,139 mm	19
1952	35.1 °C27 December 1952	6.4 °C12 June 1952	18.2 °C	868 mm	11
1951	30.8 °C29 January 1951	5.3 °C30 June 1951	18.2 °C	1,000 mm	5
1950	32.1 °C12 December 1950	3.2 °C12 July 1950	18.0 °C	1,265 mm	8
1949	34.8 °C20 December 1949	2.2 °C18 July 1949	17.9 °C	928 mm	9
1948	30.2 °C4 January 1948	1.5 °C9 August 1948	18.2 °C	1,421 mm	2
1947	32.8 °C3 February 1947	2.2 °C11 July 1947	18.2 °C	1,100 mm	5
1946	32.2 °C13 February 1946	4.0 °C17 July 1946	18.3 °C	1,272 mm	3
1945	34.5 °C15 January 1945	2.0 °C9 July 1945	18.9 °C	1,097 mm	6
1944	33.9 °C13 February 1944	5.6 °C8 September 1944	19.3 °C	1,054 mm	11
1943	34.8 °C22 January 1943	5.0 °C29 August 1943	19.0 °C	1,076 mm	22
1942	36.4 °C16 December 1942	3.2 °C18 June 1942	18.4 °C	821 mm	18
1941	31.6 °C9 December 1941	3.5 °C29 June 1941	18.2 °C	1,316 mm	4
1940	32.6 °C22 March 1940	4.6 °C3 August 1940	18.4 °C	1,517 mm	7

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

22.7 °C

+0.5 °C

Hot days (≥ 30 °C)

31 d/yr

+13

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1453 mm

+162 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	28.1 °C	+0.8 °C	83 mm	-28 mm
Feb	29.7 °C	+2.5 °C	61 mm	-45 mm
Mar	28.0 °C	+2.1 °C	67 mm	-36 mm
Apr	22.7 °C	-0.5 °C	103 mm	+6 mm
May	21.1 °C	+1.0 °C	139 mm	+35 mm
Jun	15.6 °C	-1.9 °C	156 mm	+51 mm
Jul	15.5 °C	-1.6 °C	125 mm	+13 mm
Aug	17.7 °C	-0.4 °C	145 mm	+32 mm
Sep	19.9 °C	+0.7 °C	155 mm	+19 mm
Oct	22.6 °C	+1.2 °C	85 mm	-33 mm
Nov	24.1 °C	+0.4 °C	79 mm	-15 mm
Dec	27.5 °C	+1.5 °C	256 mm	+163 mm

The year's extremes

Hottest day

36.2 °C

11 Feb 2025

Coldest day

1.9 °C

1 Jul 2025

Wettest day

70.1 mm

9 Dec 2025

Windiest day

55.8 km/h

28 Jul 2025

Strongest gust

88.9 km/h

28 Jul 2025

Hottest feels-like

40.9 °C

25 Feb 2025

Coldest feels-like

-3.3 °C

1 Jul 2025

Sunniest day

13.8 h

19 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 do Sul?

São Lourenço do Sul has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.6 °C and it receives 1,291 mm of precipitation per year.

What is the hottest day ever recorded in São Lourenço do Sul?

The hottest day measured in São Lourenço do Sul between 1940 and 2025 was 16 November 1985, reaching 39.0 °C.

What is the coldest day in São Lourenço do Sul?

The coldest day measured in São Lourenço do Sul between 1940 and 2025 was 12 July 2007, at 0.1 °C.

Does it snow in São Lourenço do Sul?

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

Has the climate of São Lourenço do Sul warmed?

Yes: São Lourenço do Sul warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in São Lourenço do Sul?

The wettest day measured in São Lourenço do Sul between 1940 and 2025 was 21 May 1987, with 116 mm of rain in 24 hours.

What was the windiest day in São Lourenço do Sul?

The windiest day measured in São Lourenço do Sul between 1940 and 2025 was 5 June 1992, with winds reaching 61.0 km/h.

What is the warmest month in São Lourenço do Sul?

The warmest month in São Lourenço do Sul is January (23.7 °C on average); the coldest is July (13.4 °C).

How much does it rain in São Lourenço do Sul?

São Lourenço do Sul receives on average 1,291 mm of precipitation per year, spread over about 133 rainy days.

Is it sunny in São Lourenço do Sul?

São Lourenço do Sul 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 do Sul?

Yes: São Lourenço do Sul has on average 72 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in São Lourenço do Sul?

In São Lourenço do Sul, between 1940 and 2025, the highest apparent temperature reached 44.5 °C on 22 January 2022, and the lowest was -4.1 °C on 14 July 1991.

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