São Luiz Gonzaga climate — normals and trends

Q: What is the climate of São Luiz Gonzaga?

São Luiz Gonzaga has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.3 °C and it receives 1,911 mm of precipitation per year.

Q: What is the hottest day ever recorded in São Luiz Gonzaga?

The hottest day measured in São Luiz Gonzaga between 1940 and 2025 was 17 January 1943, reaching 39.7 °C.

Q: What is the coldest day in São Luiz Gonzaga?

The coldest day measured in São Luiz Gonzaga between 1940 and 2025 was 18 July 1975, at -3.2 °C.

Q: Does it snow in São Luiz Gonzaga?

Almost never: São Luiz Gonzaga sees virtually no snow, with about 1 frost days per year.

Q: Has the climate of São Luiz Gonzaga warmed?

Yes: São Luiz Gonzaga warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in São Luiz Gonzaga?

The wettest day measured in São Luiz Gonzaga between 1940 and 2025 was 13 December 2015, with 191 mm of rain in 24 hours.

Q: What was the windiest day in São Luiz Gonzaga?

The windiest day measured in São Luiz Gonzaga between 1940 and 2025 was 29 April 1992, with winds reaching 60.9 km/h.

Q: What is the warmest month in São Luiz Gonzaga?

The warmest month in São Luiz Gonzaga is January (25.5 °C on average); the coldest is July (14.8 °C).

Q: How much does it rain in São Luiz Gonzaga?

São Luiz Gonzaga receives on average 1,911 mm of precipitation per year, spread over about 130 rainy days.

Q: Is it sunny in São Luiz Gonzaga?

São Luiz Gonzaga gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

São Luiz Gonzaga (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 20.3 °C and it receives 1,911 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 (25.5 °C on average) and the coldest is July (14.8 °C). Rainfall peaks in October.

São Luiz Gonzaga averages 1 frost days, 84 hot days (≥ 30 °C) and 130 rainy days per year.

São Luiz Gonzaga has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 39.7 °C (on 17 January 1943) and the coldest -3.2 °C (on 18 July 1975).

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 Luiz GonzagaRio Grande do Sul

coords: -28.41°, -54.96°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthOctoberDriest monthAugust

Mean daily temperature

20.3°C

Average daily high

25.5°C

Average daily low

15.7°C

Annual rainfall

1,911mm

Sunshine / day

9.1h

Mean relative humidity

75%

Average peak wind

16.8km/h

Seasonal range

10.7°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

84 d/yr

Rainy days (≥ 1 mm)

130 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.2 °C

Average feels-like low

15.4 °C

Average peak gust

33.4 km/h

Tropical nights (≥ 20 °C)

85 d/yr

Solar radiation

17.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °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

39.7 °C

17 January 1943

Coldest day

-3.2 °C

18 July 1975

Wettest day

191 mm

13 December 2015

Windiest day

60.9 km/h

29 April 1992

Strongest gust

107.3 km/h

29 April 1992

Hottest feels-like

44.8 °C

24 January 2022

Coldest feels-like

-7.0 °C

18 July 1975

Sunniest day

13.6 h

13 January 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.9 °C11 February 2025	-0.9 °C1 July 2025	20.5 °C	1,778 mm	107	1
2024	36.9 °C12 February 2024	1.1 °C30 June 2024	21.1 °C	1,986 mm	106	0
2023	38.4 °C12 February 2023	3.1 °C13 June 2023	21.5 °C	2,064 mm	112	0
2022	39.5 °C23 January 2022	0.9 °C11 June 2022	20.3 °C	1,414 mm	112	0
2021	36.8 °C29 December 2021	0.1 °C29 July 2021	20.4 °C	1,468 mm	103	0
2020	38.1 °C14 March 2020	-0.7 °C21 August 2020	20.8 °C	1,155 mm	117	1
2019	37.3 °C1 October 2019	-0.6 °C7 July 2019	21.0 °C	1,942 mm	99	1
2018	36.5 °C18 March 2018	1.0 °C17 June 2018	20.6 °C	1,863 mm	103	0
2017	37.9 °C16 December 2017	-0.2 °C18 July 2017	21.3 °C	1,932 mm	103	1
2016	36.8 °C24 January 2016	0.2 °C11 June 2016	20.2 °C	1,834 mm	94	0
2015	35.4 °C13 January 2015	2.4 °C12 September 2015	21.0 °C	2,687 mm	91	0
2014	37.2 °C7 February 2014	1.5 °C14 August 2014	20.9 °C	2,605 mm	105	0
2013	37.5 °C1 February 2013	0.3 °C27 August 2013	20.1 °C	1,707 mm	92	0
2012	38.4 °C19 February 2012	-0.9 °C7 June 2012	21.5 °C	1,471 mm	131	2
2011	38.0 °C20 December 2011	-0.5 °C5 July 2011	20.7 °C	1,685 mm	114	2
2010	37.0 °C5 February 2010	0.0 °C14 July 2010	20.2 °C	1,747 mm	103	0
2009	37.0 °C2 November 2009	-2.8 °C25 July 2009	20.3 °C	1,951 mm	116	2
2008	37.6 °C8 December 2008	0.1 °C16 June 2008	20.2 °C	1,461 mm	107	0
2007	36.5 °C30 March 2007	0.5 °C12 July 2007	20.3 °C	2,056 mm	118	0
2006	38.1 °C8 January 2006	0.4 °C31 July 2006	20.9 °C	1,685 mm	113	0
2005	37.9 °C7 March 2005	1.8 °C20 July 2005	20.9 °C	1,594 mm	125	0
2004	36.1 °C15 December 2004	-0.5 °C11 July 2004	20.5 °C	1,274 mm	118	1
2003	37.4 °C11 November 2003	0.0 °C12 July 2003	20.3 °C	1,978 mm	96	0
2002	37.3 °C10 March 2002	0.6 °C2 September 2002	20.8 °C	2,819 mm	99	0
2001	36.1 °C20 December 2001	-0.1 °C28 July 2001	20.8 °C	2,051 mm	97	1
2000	35.9 °C27 February 2000	-2.8 °C20 July 2000	19.9 °C	2,112 mm	91	5
1999	35.8 °C24 January 1999	0.6 °C15 August 1999	20.1 °C	1,814 mm	106	0
1998	35.5 °C21 January 1998	2.2 °C25 June 1998	20.0 °C	2,718 mm	77	0
1997	36.0 °C26 December 1997	-0.2 °C28 June 1997	20.8 °C	2,323 mm	98	2
1996	38.6 °C11 January 1996	-1.6 °C29 June 1996	20.0 °C	1,986 mm	88	2
1995	39.4 °C17 December 1995	-1.8 °C5 August 1995	20.4 °C	1,814 mm	96	1
1994	37.8 °C11 December 1994	-0.3 °C10 July 1994	20.6 °C	2,147 mm	89	1
1993	35.9 °C3 December 1993	-0.3 °C15 July 1993	19.9 °C	1,972 mm	90	1
1992	35.8 °C20 January 1992	0.2 °C23 July 1992	19.7 °C	1,867 mm	79	0
1991	37.0 °C23 November 1991	-2.3 °C2 August 1991	20.6 °C	1,642 mm	104	3
1990	36.3 °C14 November 1990	-0.5 °C28 July 1990	19.7 °C	2,328 mm	76	1
1989	35.8 °C6 December 1989	-0.7 °C6 July 1989	19.8 °C	1,673 mm	89	1
1988	37.3 °C12 January 1988	-1.0 °C1 June 1988	19.9 °C	1,529 mm	108	3
1987	36.6 °C1 December 1987	-0.7 °C24 June 1987	20.0 °C	2,747 mm	84	2
1986	39.7 °C16 January 1986	2.9 °C5 September 1986	21.0 °C	2,343 mm	98	0
1985	39.1 °C16 November 1985	-0.1 °C11 July 1985	21.0 °C	2,010 mm	113	1
1984	35.9 °C19 February 1984	-0.3 °C26 August 1984	20.2 °C	2,629 mm	88	1
1983	35.8 °C30 December 1983	1.2 °C9 September 1983	19.8 °C	2,322 mm	90	0
1982	37.1 °C27 January 1982	2.6 °C29 June 1982	20.6 °C	2,207 mm	85	0
1981	34.8 °C2 January 1981	-2.4 °C19 June 1981	20.5 °C	1,528 mm	98	2
1980	35.3 °C9 December 1980	-1.7 °C31 July 1980	20.3 °C	2,017 mm	105	2
1979	38.0 °C5 February 1979	1.0 °C17 July 1979	19.7 °C	2,113 mm	86	0
1978	37.0 °C18 March 1978	0.2 °C1 June 1978	20.3 °C	1,471 mm	103	0
1977	36.0 °C9 March 1977	1.5 °C17 July 1977	21.0 °C	2,084 mm	108	0
1976	37.7 °C14 December 1976	-0.2 °C10 July 1976	19.2 °C	1,511 mm	79	1
1975	37.0 °C14 February 1975	-3.2 °C18 July 1975	19.7 °C	1,897 mm	69	1
1974	36.7 °C6 January 1974	0.0 °C13 June 1974	19.8 °C	1,742 mm	89	0
1973	36.3 °C12 January 1973	0.9 °C7 September 1973	19.8 °C	2,647 mm	87	0
1972	37.6 °C8 February 1972	0.2 °C1 September 1972	20.1 °C	2,934 mm	71	0
1971	38.9 °C20 December 1971	-1.1 °C12 June 1971	19.7 °C	1,711 mm	83	2
1970	37.4 °C27 December 1970	0.3 °C2 July 1970	20.2 °C	1,977 mm	88	0
1969	35.4 °C4 February 1969	1.4 °C19 June 1969	19.7 °C	2,357 mm	76	0
1968	37.2 °C14 December 1968	2.7 °C21 June 1968	20.1 °C	1,411 mm	106	0
1967	35.9 °C18 December 1967	-2.9 °C14 June 1967	20.1 °C	2,411 mm	64	2
1966	35.0 °C11 December 1966	-0.4 °C6 August 1966	19.4 °C	2,083 mm	51	1
1965	37.3 °C22 January 1965	0.5 °C7 July 1965	19.9 °C	1,920 mm	81	0
1964	35.9 °C25 January 1964	0.5 °C29 June 1964	19.3 °C	1,108 mm	82	0
1963	37.4 °C2 January 1963	-0.8 °C6 August 1963	20.4 °C	1,645 mm	89	1
1962	38.6 °C25 December 1962	0.4 °C30 May 1962	19.0 °C	1,289 mm	74	0
1961	34.6 °C16 January 1961	-1.4 °C16 June 1961	20.4 °C	1,950 mm	79	2
1960	35.5 °C9 December 1960	-0.3 °C25 June 1960	19.7 °C	1,629 mm	77	1
1959	33.0 °C21 January 1959	3.5 °C10 June 1959	19.9 °C	2,458 mm	51	0
1958	36.4 °C7 January 1958	2.9 °C19 June 1958	19.8 °C	1,814 mm	59	0
1957	34.1 °C17 October 1957	0.9 °C22 July 1957	19.8 °C	1,894 mm	39	0
1956	32.0 °C5 February 1956	1.7 °C11 May 1956	18.8 °C	1,786 mm	17	0
1955	33.3 °C29 November 1955	-1.6 °C8 July 1955	19.3 °C	1,878 mm	43	2
1954	33.1 °C11 December 1954	3.7 °C8 August 1954	19.7 °C	2,065 mm	36	0
1953	35.5 °C5 January 1953	2.4 °C20 July 1953	20.6 °C	2,116 mm	54	0
1952	36.2 °C27 December 1952	3.8 °C17 June 1952	19.9 °C	1,609 mm	48	0
1951	31.7 °C25 September 1951	3.5 °C6 July 1951	19.8 °C	1,696 mm	25	0
1950	32.0 °C29 January 1950	1.0 °C11 July 1950	19.6 °C	1,676 mm	29	0
1949	34.3 °C20 December 1949	2.4 °C19 July 1949	19.6 °C	1,491 mm	46	0
1948	32.4 °C12 December 1948	1.3 °C8 August 1948	19.7 °C	2,639 mm	15	0
1947	32.5 °C29 November 1947	0.2 °C10 July 1947	19.7 °C	1,783 mm	20	0
1946	32.8 °C23 January 1946	1.1 °C19 July 1946	19.7 °C	2,258 mm	28	0
1945	36.0 °C10 January 1945	0.7 °C9 July 1945	20.7 °C	1,474 mm	59	0
1944	34.7 °C26 March 1944	0.2 °C27 June 1944	21.4 °C	1,592 mm	85	0
1943	39.7 °C17 January 1943	3.1 °C28 August 1943	21.0 °C	919 mm	86	0
1942	38.0 °C26 November 1942	-0.4 °C5 July 1942	20.0 °C	1,227 mm	82	1
1941	31.8 °C10 December 1941	0.9 °C26 June 1941	20.0 °C	2,224 mm	37	0
1940	34.4 °C8 March 1940	2.8 °C9 August 1940	20.1 °C	1,957 mm	69	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

26.0 °C

+0.5 °C

Hot days (≥ 30 °C)

107 d/yr

+23

Frost days (< 0 °C)

1 d/yr

Annual rainfall

1778 mm

-133 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	32.7 °C	+1.9 °C	46 mm	-139 mm
Feb	34.3 °C	+4.3 °C	94 mm	-56 mm
Mar	31.7 °C	+2.8 °C	80 mm	-55 mm
Apr	25.3 °C	-0.4 °C	71 mm	-94 mm
May	23.2 °C	+1.0 °C	283 mm	+125 mm
Jun	17.0 °C	-2.9 °C	223 mm	+66 mm
Jul	19.9 °C	0.0 °C	64 mm	-72 mm
Aug	21.1 °C	-0.5 °C	122 mm	-7 mm
Sep	23.3 °C	0.0 °C	273 mm	+96 mm
Oct	25.4 °C	-0.3 °C	195 mm	-14 mm
Nov	28.8 °C	+0.8 °C	92 mm	-67 mm
Dec	30.0 °C	-0.2 °C	236 mm	+85 mm

The year's extremes

Hottest day

37.9 °C

11 Feb 2025

Coldest day

-0.9 °C

1 Jul 2025

Wettest day

97.5 mm

9 May 2025

Windiest day

34.1 km/h

28 Oct 2025

Strongest gust

78.5 km/h

21 Sep 2025

Hottest feels-like

42.7 °C

5 Feb 2025

Coldest feels-like

-4.3 °C

1 Jul 2025

Sunniest day

13.6 h

13 Jan 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 Luiz Gonzaga?

São Luiz Gonzaga has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.3 °C and it receives 1,911 mm of precipitation per year.

What is the hottest day ever recorded in São Luiz Gonzaga?

The hottest day measured in São Luiz Gonzaga between 1940 and 2025 was 17 January 1943, reaching 39.7 °C.

What is the coldest day in São Luiz Gonzaga?

The coldest day measured in São Luiz Gonzaga between 1940 and 2025 was 18 July 1975, at -3.2 °C.

Does it snow in São Luiz Gonzaga?

Almost never: São Luiz Gonzaga sees virtually no snow, with about 1 frost days per year.

Has the climate of São Luiz Gonzaga warmed?

Yes: São Luiz Gonzaga warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in São Luiz Gonzaga?

The wettest day measured in São Luiz Gonzaga between 1940 and 2025 was 13 December 2015, with 191 mm of rain in 24 hours.

What was the windiest day in São Luiz Gonzaga?

The windiest day measured in São Luiz Gonzaga between 1940 and 2025 was 29 April 1992, with winds reaching 60.9 km/h.

What is the warmest month in São Luiz Gonzaga?

The warmest month in São Luiz Gonzaga is January (25.5 °C on average); the coldest is July (14.8 °C).

How much does it rain in São Luiz Gonzaga?

São Luiz Gonzaga receives on average 1,911 mm of precipitation per year, spread over about 130 rainy days.

Is it sunny in São Luiz Gonzaga?

São Luiz Gonzaga gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

Are there tropical nights in São Luiz Gonzaga?

Yes: São Luiz Gonzaga has on average 85 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in São Luiz Gonzaga?

In São Luiz Gonzaga, between 1940 and 2025, the highest apparent temperature reached 44.8 °C on 24 January 2022, and the lowest was -7.0 °C on 18 July 1975.

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