Rio Grande climate — normals and trends

Q: What is the climate of Rio Grande?

Rio Grande has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 1,210 mm of precipitation per year.

Q: What is the hottest day ever recorded in Rio Grande?

The hottest day measured in Rio Grande between 1940 and 2025 was 11 February 2025, reaching 31.0 °C.

Q: What is the coldest day in Rio Grande?

The coldest day measured in Rio Grande between 1940 and 2025 was 11 July 2007, at 5.1 °C.

Q: Does it snow in Rio Grande?

Almost never: Rio Grande sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Rio Grande warmed?

Yes: Rio Grande warmed by +0.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Rio Grande?

The wettest day measured in Rio Grande between 1940 and 2025 was 12 April 1992, with 136 mm of rain in 24 hours.

Q: What was the windiest day in Rio Grande?

The windiest day measured in Rio Grande between 1940 and 2025 was 17 April 1999, with winds reaching 80.2 km/h.

Q: What is the warmest month in Rio Grande?

The warmest month in Rio Grande is February (23.4 °C on average); the coldest is July (13.6 °C).

Q: How much does it rain in Rio Grande?

Rio Grande receives on average 1,210 mm of precipitation per year, spread over about 117 rainy days.

Q: Is it sunny in Rio Grande?

Rio Grande gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

Rio Grande (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.5 °C and it receives 1,210 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 (23.4 °C on average) and the coldest is July (13.6 °C). Rainfall peaks in September.

Rio Grande averages 0 frost days, 0 hot days (≥ 30 °C) and 117 rainy days per year.

Rio Grande has warmed by +0.6 °C between 1940 and 2025, or +0.07 °C per decade. This trend is statistically significant.

The hottest day of the period reached 31.0 °C (on 11 February 2025) and the coldest 5.1 °C (on 11 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

Rio GrandeRio Grande do Sul

coords: -32.03°, -52.10°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthFebruaryColdest monthJulyWettest monthSeptemberDriest monthDecember

Mean daily temperature

18.5°C

Average daily high

19.5°C

Average daily low

17.5°C

Annual rainfall

1,210mm

Sunshine / day

9.4h

Mean relative humidity

80%

Average peak wind

30.4km/h

Seasonal range

9.8°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

0 d/yr

Rainy days (≥ 1 mm)

117 d/yr

Annual snowfall

0.0 cm

Average feels-like high

19.5 °C

Average feels-like low

15.3 °C

Average peak gust

41.1 km/h

Tropical nights (≥ 20 °C)

120 d/yr

Solar radiation

16.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.6 °C

since 1940

+0.1 °C per decade · r² = 0.17 · 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

31.0 °C

11 February 2025

Coldest day

5.1 °C

11 July 2007

Wettest day

136 mm

12 April 1992

Windiest day

80.2 km/h

17 April 1999

Strongest gust

118.8 km/h

17 April 1999

Hottest feels-like

37.9 °C

23 January 2022

Coldest feels-like

-2.9 °C

27 June 1984

Sunniest day

14.0 h

26 December 1943

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	31.0 °C11 February 2025	5.1 °C1 July 2025	18.9 °C	1,368 mm	1
2024	28.9 °C12 February 2024	6.8 °C30 June 2024	18.9 °C	1,594 mm	0
2023	30.9 °C14 February 2023	8.5 °C17 July 2023	19.4 °C	1,419 mm	1
2022	29.5 °C16 January 2022	7.9 °C11 June 2022	18.3 °C	1,125 mm	0
2021	28.2 °C8 January 2021	6.7 °C29 July 2021	18.8 °C	1,036 mm	0
2020	28.1 °C18 February 2020	6.4 °C14 July 2020	18.5 °C	990 mm	0
2019	30.8 °C30 January 2019	7.0 °C5 July 2019	19.2 °C	1,254 mm	2
2018	27.5 °C23 January 2018	8.3 °C26 August 2018	18.9 °C	1,120 mm	0
2017	29.3 °C1 March 2017	7.2 °C18 July 2017	19.6 °C	1,072 mm	0
2016	29.3 °C25 January 2016	7.1 °C17 July 2016	18.0 °C	1,262 mm	0
2015	27.0 °C12 January 2015	8.5 °C12 September 2015	19.2 °C	1,582 mm	0
2014	30.8 °C24 January 2014	8.9 °C13 August 2014	19.3 °C	1,236 mm	2
2013	29.0 °C2 February 2013	5.9 °C22 July 2013	18.1 °C	1,127 mm	0
2012	29.6 °C19 February 2012	6.8 °C7 June 2012	19.0 °C	971 mm	0
2011	27.1 °C27 January 2011	6.6 °C3 July 2011	18.3 °C	997 mm	0
2010	30.9 °C3 February 2010	6.9 °C13 July 2010	18.7 °C	1,127 mm	2
2009	26.6 °C20 February 2009	5.8 °C24 July 2009	18.4 °C	1,258 mm	0
2008	26.4 °C16 January 2008	8.2 °C30 May 2008	18.5 °C	1,054 mm	0
2007	28.1 °C13 January 2007	5.1 °C11 July 2007	18.2 °C	1,212 mm	0
2006	27.3 °C5 February 2006	7.2 °C4 September 2006	18.7 °C	1,028 mm	0
2005	27.2 °C11 March 2005	9.1 °C6 July 2005	18.9 °C	1,140 mm	0
2004	26.7 °C17 February 2004	8.1 °C11 July 2004	18.5 °C	1,028 mm	0
2003	28.5 °C3 February 2003	7.9 °C10 July 2003	18.3 °C	1,114 mm	0
2002	28.7 °C17 March 2002	7.7 °C24 June 2002	18.8 °C	1,808 mm	0
2001	28.2 °C7 February 2001	8.2 °C27 July 2001	19.2 °C	1,465 mm	0
2000	27.0 °C9 December 2000	5.5 °C14 July 2000	18.2 °C	1,397 mm	0
1999	27.0 °C27 December 1999	7.3 °C14 August 1999	18.1 °C	1,148 mm	0
1998	27.1 °C6 March 1998	9.7 °C25 June 1998	18.5 °C	1,870 mm	0
1997	26.7 °C8 January 1997	6.0 °C28 June 1997	18.6 °C	1,500 mm	0
1996	26.6 °C2 April 1996	6.4 °C29 June 1996	18.2 °C	1,124 mm	0
1995	28.5 °C18 December 1995	5.9 °C4 August 1995	18.0 °C	1,222 mm	0
1994	27.9 °C13 December 1994	5.9 °C8 July 1994	18.3 °C	1,318 mm	0
1993	28.2 °C25 January 1993	6.7 °C7 July 1993	18.2 °C	1,252 mm	0
1992	28.6 °C20 February 1992	6.6 °C2 August 1992	18.3 °C	1,260 mm	0
1991	26.6 °C28 February 1991	5.7 °C2 August 1991	18.6 °C	1,075 mm	0
1990	29.4 °C30 January 1990	6.8 °C19 July 1990	18.3 °C	1,365 mm	0
1989	26.8 °C7 February 1989	8.0 °C3 July 1989	18.5 °C	813 mm	0
1988	29.3 °C27 March 1988	6.3 °C11 July 1988	17.5 °C	913 mm	0
1987	27.5 °C5 March 1987	7.9 °C16 June 1987	18.2 °C	1,713 mm	0
1986	27.0 °C6 February 1986	9.3 °C5 September 1986	19.0 °C	1,231 mm	0
1985	27.5 °C26 February 1985	9.4 °C11 July 1985	18.7 °C	1,311 mm	0
1984	29.0 °C28 February 1984	6.0 °C27 June 1984	18.1 °C	1,615 mm	0
1983	28.3 °C30 December 1983	8.3 °C10 June 1983	18.0 °C	1,272 mm	0
1982	26.7 °C21 February 1982	7.3 °C29 June 1982	18.3 °C	1,265 mm	0
1981	27.5 °C27 February 1981	7.9 °C19 June 1981	18.4 °C	1,178 mm	0
1980	29.3 °C23 January 1980	6.3 °C31 July 1980	18.6 °C	1,229 mm	0
1979	25.8 °C13 February 1979	8.0 °C17 July 1979	17.8 °C	1,182 mm	0
1978	27.6 °C23 January 1978	7.7 °C31 August 1978	18.5 °C	1,268 mm	0
1977	27.0 °C21 February 1977	7.7 °C16 July 1977	19.0 °C	1,751 mm	0
1976	28.2 °C19 January 1976	7.4 °C9 July 1976	17.9 °C	1,342 mm	0
1975	29.4 °C12 February 1975	6.8 °C17 July 1975	18.3 °C	1,015 mm	0
1974	26.6 °C7 February 1974	7.8 °C8 August 1974	18.1 °C	1,294 mm	0
1973	28.8 °C3 February 1973	8.4 °C18 July 1973	18.5 °C	1,419 mm	0
1972	27.5 °C9 February 1972	5.5 °C4 August 1972	18.4 °C	1,761 mm	0
1971	27.8 °C20 December 1971	6.8 °C16 June 1971	18.1 °C	1,000 mm	0
1970	28.8 °C7 March 1970	9.1 °C30 June 1970	18.6 °C	1,208 mm	0
1969	28.7 °C31 January 1969	7.6 °C19 June 1969	18.4 °C	1,102 mm	0
1968	27.4 °C22 February 1968	9.0 °C20 June 1968	18.3 °C	958 mm	0
1967	26.6 °C17 January 1967	7.0 °C14 June 1967	18.4 °C	1,426 mm	0
1966	27.9 °C17 March 1966	7.2 °C24 July 1966	18.2 °C	1,408 mm	0
1965	28.0 °C6 February 1965	6.5 °C11 July 1965	18.1 °C	1,135 mm	0
1964	27.8 °C4 March 1964	8.0 °C9 July 1964	17.9 °C	955 mm	0
1963	27.7 °C6 March 1963	7.9 °C23 July 1963	18.6 °C	1,553 mm	0
1962	27.1 °C17 February 1962	8.5 °C29 May 1962	18.1 °C	831 mm	0
1961	27.4 °C17 January 1961	6.9 °C14 June 1961	18.7 °C	1,309 mm	0
1960	25.3 °C16 February 1960	7.1 °C2 September 1960	17.7 °C	1,078 mm	0
1959	26.1 °C4 February 1959	7.7 °C15 August 1959	18.0 °C	1,567 mm	0
1958	27.7 °C14 February 1958	9.2 °C18 June 1958	18.7 °C	1,107 mm	0
1957	27.2 °C12 January 1957	7.6 °C21 July 1957	18.4 °C	1,358 mm	0
1956	27.9 °C5 February 1956	9.2 °C29 June 1956	18.0 °C	835 mm	0
1955	26.5 °C15 February 1955	6.0 °C29 July 1955	17.7 °C	972 mm	0
1954	27.3 °C4 March 1954	9.2 °C19 July 1954	18.6 °C	1,262 mm	0
1953	27.8 °C31 January 1953	7.9 °C20 July 1953	18.6 °C	1,053 mm	0
1952	27.8 °C19 March 1952	8.6 °C30 June 1952	18.0 °C	899 mm	0
1951	26.4 °C20 February 1951	8.2 °C3 August 1951	18.1 °C	996 mm	0
1950	26.1 °C10 December 1950	8.2 °C6 August 1950	18.0 °C	1,024 mm	0
1949	27.2 °C7 February 1949	7.3 °C22 July 1949	17.7 °C	895 mm	0
1948	25.8 °C18 February 1948	6.7 °C8 August 1948	18.2 °C	1,198 mm	0
1947	26.9 °C3 February 1947	8.0 °C10 July 1947	18.3 °C	982 mm	0
1946	25.4 °C13 February 1946	7.4 °C15 July 1946	18.4 °C	1,070 mm	0
1945	25.9 °C15 March 1945	6.3 °C9 July 1945	18.9 °C	982 mm	0
1944	27.0 °C14 February 1944	9.6 °C26 June 1944	19.0 °C	999 mm	0
1943	28.2 °C21 February 1943	8.0 °C27 August 1943	18.9 °C	901 mm	0
1942	27.8 °C13 February 1942	7.1 °C17 June 1942	18.1 °C	855 mm	0
1941	25.6 °C15 February 1941	7.1 °C18 July 1941	17.9 °C	1,278 mm	0
1940	25.6 °C8 April 1940	8.8 °C1 July 1940	18.2 °C	1,383 mm	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

20.0 °C

+0.5 °C

Hot days (≥ 30 °C)

1 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1368 mm

+158 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	24.1 °C	+0.3 °C	130 mm	+42 mm
Feb	26.3 °C	+2.0 °C	30 mm	-54 mm
Mar	25.1 °C	+1.6 °C	58 mm	-37 mm
Apr	21.1 °C	-0.2 °C	132 mm	+29 mm
May	19.5 °C	+1.1 °C	156 mm	+49 mm
Jun	14.9 °C	-1.0 °C	130 mm	+19 mm
Jul	13.2 °C	-1.6 °C	120 mm	+6 mm
Aug	15.1 °C	0.0 °C	169 mm	+59 mm
Sep	17.0 °C	+0.9 °C	147 mm	+23 mm
Oct	19.2 °C	+1.1 °C	85 mm	-29 mm
Nov	20.6 °C	+0.4 °C	73 mm	-13 mm
Dec	23.9 °C	+1.7 °C	138 mm	+63 mm

The year's extremes

Hottest day

31.0 °C

11 Feb 2025

Coldest day

5.1 °C

1 Jul 2025

Wettest day

63.4 mm

27 Jul 2025

Windiest day

68.3 km/h

28 Jul 2025

Strongest gust

94.7 km/h

28 Jul 2025

Hottest feels-like

37.0 °C

11 Feb 2025

Coldest feels-like

-2.8 °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 Rio Grande?

Rio Grande has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 1,210 mm of precipitation per year.

What is the hottest day ever recorded in Rio Grande?

The hottest day measured in Rio Grande between 1940 and 2025 was 11 February 2025, reaching 31.0 °C.

What is the coldest day in Rio Grande?

The coldest day measured in Rio Grande between 1940 and 2025 was 11 July 2007, at 5.1 °C.

Does it snow in Rio Grande?

Almost never: Rio Grande sees virtually no snow, with about 0 frost days per year.

Has the climate of Rio Grande warmed?

Yes: Rio Grande warmed by +0.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Rio Grande?

The wettest day measured in Rio Grande between 1940 and 2025 was 12 April 1992, with 136 mm of rain in 24 hours.

What was the windiest day in Rio Grande?

The windiest day measured in Rio Grande between 1940 and 2025 was 17 April 1999, with winds reaching 80.2 km/h.

What is the warmest month in Rio Grande?

The warmest month in Rio Grande is February (23.4 °C on average); the coldest is July (13.6 °C).

How much does it rain in Rio Grande?

Rio Grande receives on average 1,210 mm of precipitation per year, spread over about 117 rainy days.

Is it sunny in Rio Grande?

Rio Grande gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

Are there tropical nights in Rio Grande?

Yes: Rio Grande has on average 120 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Rio Grande?

In Rio Grande, between 1940 and 2025, the highest apparent temperature reached 37.9 °C on 23 January 2022, and the lowest was -2.9 °C on 27 June 1984.

Compare Rio Grande with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Rio Grande

Other cities — Brazil

All cities in Brazil →