Arroio do Meio climate — normals and trends

Q: What is the climate of Arroio do Meio?

Arroio do Meio has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.8 °C and it receives 1,737 mm of precipitation per year.

Q: What is the hottest day ever recorded in Arroio do Meio?

The hottest day measured in Arroio do Meio between 1940 and 2025 was 16 November 1985, reaching 39.2 °C.

Q: What is the coldest day in Arroio do Meio?

The coldest day measured in Arroio do Meio between 1940 and 2025 was 14 July 1991, at -3.8 °C.

Q: Does it snow in Arroio do Meio?

Almost never: Arroio do Meio sees virtually no snow, with about 1 frost days per year.

Q: Has the climate of Arroio do Meio warmed?

Yes: Arroio do Meio warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Arroio do Meio?

The wettest day measured in Arroio do Meio between 1940 and 2025 was 10 November 1977, with 133 mm of rain in 24 hours.

Q: What was the windiest day in Arroio do Meio?

The windiest day measured in Arroio do Meio between 1940 and 2025 was 2 July 1983, with winds reaching 43.6 km/h.

Q: What is the warmest month in Arroio do Meio?

The warmest month in Arroio do Meio is January (23.7 °C on average); the coldest is July (13.6 °C).

Q: How much does it rain in Arroio do Meio?

Arroio do Meio receives on average 1,737 mm of precipitation per year, spread over about 153 rainy days.

Q: Is it sunny in Arroio do Meio?

Arroio do Meio gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.

Arroio do Meio (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.8 °C and it receives 1,737 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 (13.6 °C). Rainfall peaks in January.

Arroio do Meio averages 1 frost days, 47 hot days (≥ 30 °C) and 153 rainy days per year.

Arroio do Meio has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.

The hottest day of the period reached 39.2 °C (on 16 November 1985) and the coldest -3.8 °C (on 14 July 1991).

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

Arroio do MeioRio Grande do Sul

coords: -29.40°, -51.95°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthJanuaryDriest monthMay

Mean daily temperature

18.8°C

Average daily high

23.9°C

Average daily low

14.4°C

Annual rainfall

1,737mm

Sunshine / day

8.8h

Mean relative humidity

81%

Average peak wind

13.3km/h

Seasonal range

10.1°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

47 d/yr

Rainy days (≥ 1 mm)

153 d/yr

Annual snowfall

0.0 cm

Average feels-like high

25.8 °C

Average feels-like low

14.4 °C

Average peak gust

31.1 km/h

Tropical nights (≥ 20 °C)

46 d/yr

Solar radiation

16.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.8 °C

since 1940

+0.1 °C per decade · r² = 0.21 · 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

39.2 °C

16 November 1985

Coldest day

-3.8 °C

14 July 1991

Wettest day

133 mm

10 November 1977

Windiest day

43.6 km/h

2 July 1983

Strongest gust

103.3 km/h

2 July 1983

Hottest feels-like

45.9 °C

7 February 2010

Coldest feels-like

-7.2 °C

14 July 1991

Sunniest day

13.6 h

3 December 1941

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.2 °C11 February 2025	-0.6 °C1 July 2025	19.0 °C	1,806 mm	72	1
2024	36.3 °C12 February 2024	1.3 °C30 June 2024	19.5 °C	2,143 mm	51	0
2023	38.3 °C13 February 2023	2.6 °C28 August 2023	19.6 °C	2,065 mm	80	0
2022	37.8 °C22 January 2022	1.6 °C19 June 2022	18.5 °C	1,589 mm	67	0
2021	37.8 °C11 January 2021	-0.2 °C30 July 2021	18.9 °C	1,210 mm	57	1
2020	37.6 °C14 March 2020	0.0 °C21 August 2020	19.1 °C	1,229 mm	66	0
2019	37.5 °C27 December 2019	-1.3 °C7 July 2019	19.8 °C	1,635 mm	77	1
2018	37.3 °C11 December 2018	-0.3 °C17 June 2018	19.3 °C	1,509 mm	56	1
2017	35.7 °C16 December 2017	0.1 °C19 July 2017	20.1 °C	1,945 mm	71	0
2016	36.1 °C24 January 2016	-0.5 °C13 June 2016	18.8 °C	1,473 mm	70	1
2015	34.3 °C6 January 2015	2.6 °C12 September 2015	19.5 °C	2,257 mm	45	0
2014	37.9 °C5 February 2014	-0.5 °C14 August 2014	19.5 °C	2,146 mm	67	1
2013	37.3 °C26 December 2013	-0.3 °C25 July 2013	18.7 °C	1,633 mm	59	1
2012	37.2 °C19 February 2012	-3.3 °C9 June 2012	19.7 °C	1,347 mm	90	2
2011	36.2 °C22 December 2011	-1.6 °C6 July 2011	18.6 °C	1,919 mm	55	4
2010	37.0 °C3 February 2010	0.4 °C15 July 2010	18.6 °C	1,758 mm	52	0
2009	36.1 °C2 November 2009	-3.0 °C25 July 2009	18.5 °C	1,789 mm	56	3
2008	35.3 °C8 December 2008	0.0 °C17 June 2008	18.4 °C	1,646 mm	46	0
2007	36.1 °C30 March 2007	-0.9 °C12 July 2007	19.0 °C	1,967 mm	81	3
2006	37.1 °C8 January 2006	-0.7 °C22 August 2006	19.1 °C	1,519 mm	64	2
2005	37.7 °C8 March 2005	-0.2 °C20 July 2005	19.4 °C	1,498 mm	83	1
2004	35.2 °C6 September 2004	-1.0 °C11 July 2004	18.6 °C	1,378 mm	42	2
2003	35.8 °C4 February 2003	0.6 °C12 July 2003	18.9 °C	1,887 mm	47	0
2002	35.6 °C10 March 2002	1.2 °C25 June 2002	19.4 °C	2,325 mm	59	0
2001	34.7 °C20 December 2001	0.5 °C22 June 2001	19.5 °C	1,885 mm	58	0
2000	35.5 °C12 February 2000	-2.2 °C14 July 2000	18.4 °C	1,907 mm	51	2
1999	36.6 °C26 December 1999	2.2 °C6 June 1999	18.3 °C	1,615 mm	49	0
1998	34.2 °C21 January 1998	2.6 °C26 June 1998	18.3 °C	2,509 mm	39	0
1997	35.4 °C7 January 1997	-0.7 °C29 June 1997	19.0 °C	2,239 mm	47	2
1996	35.5 °C11 January 1996	-2.6 °C30 June 1996	18.4 °C	2,000 mm	42	1
1995	38.7 °C18 December 1995	-0.9 °C5 August 1995	18.8 °C	1,644 mm	65	1
1994	37.3 °C12 December 1994	-1.3 °C11 July 1994	19.0 °C	1,993 mm	53	2
1993	35.1 °C3 December 1993	-0.5 °C16 July 1993	18.6 °C	1,877 mm	50	2
1992	35.0 °C20 February 1992	-1.6 °C3 August 1992	18.4 °C	1,970 mm	46	2
1991	35.4 °C20 January 1991	-3.8 °C14 July 1991	18.9 °C	1,682 mm	58	5
1990	35.9 °C15 November 1990	0.2 °C23 July 1990	18.3 °C	2,036 mm	47	0
1989	34.0 °C7 February 1989	0.6 °C6 July 1989	18.4 °C	1,525 mm	57	0
1988	36.3 °C26 March 1988	-1.5 °C1 June 1988	18.3 °C	1,516 mm	65	6
1987	35.8 °C1 December 1987	-0.3 °C24 June 1987	18.6 °C	2,249 mm	50	1
1986	36.7 °C16 January 1986	2.8 °C14 May 1986	19.5 °C	1,832 mm	57	0
1985	39.2 °C16 November 1985	2.3 °C4 June 1985	19.4 °C	1,740 mm	60	0
1984	36.1 °C4 February 1984	0.9 °C30 June 1984	18.9 °C	2,178 mm	59	0
1983	33.7 °C30 December 1983	1.2 °C7 June 1983	18.5 °C	2,086 mm	41	0
1982	35.5 °C31 January 1982	3.1 °C28 May 1982	19.1 °C	1,649 mm	47	0
1981	33.8 °C12 February 1981	0.3 °C21 June 1981	19.0 °C	1,425 mm	36	0
1980	35.0 °C24 March 1980	-0.9 °C1 August 1980	19.1 °C	1,590 mm	55	2
1979	37.4 °C6 February 1979	1.4 °C20 September 1979	18.2 °C	1,623 mm	60	0
1978	36.0 °C17 March 1978	0.7 °C6 June 1978	18.8 °C	1,372 mm	40	0
1977	34.8 °C16 February 1977	1.2 °C2 September 1977	19.7 °C	1,941 mm	66	0
1976	35.1 °C14 December 1976	-0.9 °C11 July 1976	18.1 °C	1,899 mm	44	2
1975	35.7 °C15 November 1975	-1.7 °C18 July 1975	18.5 °C	1,862 mm	39	2
1974	35.6 °C4 November 1974	0.0 °C9 August 1974	18.5 °C	1,506 mm	51	0
1973	34.8 °C12 January 1973	1.9 °C19 July 1973	18.7 °C	2,129 mm	48	0
1972	36.1 °C28 December 1972	0.1 °C14 July 1972	18.7 °C	2,269 mm	38	0
1971	35.7 °C17 November 1971	-1.5 °C17 June 1971	18.4 °C	1,734 mm	51	2
1970	36.8 °C27 December 1970	0.0 °C3 July 1970	18.9 °C	1,713 mm	60	0
1969	35.0 °C4 February 1969	0.8 °C3 August 1969	18.4 °C	1,608 mm	35	0
1968	37.0 °C12 December 1968	0.6 °C3 September 1968	18.4 °C	1,424 mm	62	0
1967	35.4 °C10 November 1967	-1.9 °C14 June 1967	18.7 °C	1,864 mm	28	2
1966	33.2 °C14 December 1966	-0.8 °C1 July 1966	17.8 °C	1,917 mm	16	1
1965	35.5 °C1 February 1965	-1.1 °C12 July 1965	18.2 °C	1,729 mm	50	2
1964	34.6 °C25 January 1964	0.8 °C26 June 1964	17.8 °C	1,297 mm	46	0
1963	37.5 °C3 January 1963	-0.1 °C23 July 1963	18.6 °C	1,931 mm	41	1
1962	35.2 °C28 November 1962	0.8 °C20 July 1962	17.6 °C	975 mm	44	0
1961	34.1 °C20 January 1961	-0.8 °C17 June 1961	18.9 °C	1,751 mm	47	2
1960	34.2 °C22 January 1960	0.2 °C25 June 1960	18.0 °C	1,452 mm	42	0
1959	32.1 °C8 September 1959	1.1 °C11 June 1959	18.4 °C	1,886 mm	29	0
1958	35.5 °C7 January 1958	1.9 °C24 May 1958	18.3 °C	1,675 mm	24	0
1957	34.1 °C25 December 1957	-1.0 °C3 August 1957	18.2 °C	1,745 mm	20	1
1956	33.6 °C5 February 1956	0.7 °C15 May 1956	17.4 °C	1,459 mm	9	0
1955	34.2 °C8 January 1955	-0.8 °C8 July 1955	17.9 °C	1,732 mm	29	2
1954	32.7 °C1 December 1954	1.9 °C6 July 1954	18.4 °C	1,959 mm	23	0
1953	34.5 °C21 February 1953	2.0 °C31 July 1953	19.0 °C	1,822 mm	31	0
1952	35.3 °C27 December 1952	3.5 °C13 June 1952	18.5 °C	1,393 mm	34	0
1951	32.2 °C25 September 1951	2.7 °C6 July 1951	18.5 °C	1,488 mm	17	0
1950	33.1 °C29 January 1950	-0.5 °C11 July 1950	18.1 °C	1,619 mm	26	1
1949	34.4 °C22 December 1949	-0.5 °C16 August 1949	18.0 °C	1,491 mm	14	1
1948	32.1 °C25 September 1948	0.4 °C9 August 1948	18.4 °C	2,317 mm	9	0
1947	32.3 °C30 November 1947	-0.1 °C11 July 1947	18.2 °C	1,572 mm	14	1
1946	32.4 °C23 January 1946	-1.0 °C19 July 1946	18.3 °C	1,838 mm	16	1
1945	35.8 °C15 January 1945	0.6 °C24 June 1945	19.1 °C	1,358 mm	24	0
1944	33.7 °C1 January 1944	1.1 °C27 June 1944	19.7 °C	1,376 mm	46	0
1943	38.3 °C2 January 1943	1.5 °C24 August 1943	19.3 °C	1,021 mm	57	0
1942	38.1 °C26 November 1942	-1.6 °C19 June 1942	18.6 °C	1,080 mm	61	3
1941	32.0 °C25 November 1941	-0.5 °C19 July 1941	18.6 °C	1,860 mm	17	1
1940	34.0 °C14 January 1940	2.4 °C10 August 1940	18.8 °C	1,850 mm	28	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

24.4 °C

+0.5 °C

Hot days (≥ 30 °C)

72 d/yr

+25

Frost days (< 0 °C)

1 d/yr

Annual rainfall

1806 mm

+69 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.0 °C	+1.0 °C	97 mm	-82 mm
Feb	32.3 °C	+3.7 °C	121 mm	-29 mm
Mar	30.3 °C	+3.0 °C	58 mm	-78 mm
Apr	23.7 °C	-0.6 °C	105 mm	-15 mm
May	22.3 °C	+1.4 °C	172 mm	+52 mm
Jun	15.8 °C	-3.0 °C	234 mm	+100 mm
Jul	17.6 °C	-1.1 °C	74 mm	-55 mm
Aug	19.7 °C	-0.5 °C	114 mm	-21 mm
Sep	21.6 °C	+0.1 °C	264 mm	+92 mm
Oct	23.9 °C	+0.3 °C	140 mm	-36 mm
Nov	26.4 °C	+0.5 °C	116 mm	-24 mm
Dec	29.4 °C	+1.3 °C	312 mm	+165 mm

The year's extremes

Hottest day

37.2 °C

11 Feb 2025

Coldest day

-0.6 °C

1 Jul 2025

Wettest day

57.9 mm

18 Jun 2025

Windiest day

33.1 km/h

20 Aug 2025

Strongest gust

68.8 km/h

14 Jun 2025

Hottest feels-like

43.9 °C

3 Mar 2025

Coldest feels-like

-3.9 °C

1 Jul 2025

Sunniest day

13.6 h

4 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 Arroio do Meio?

Arroio do Meio has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.8 °C and it receives 1,737 mm of precipitation per year.

What is the hottest day ever recorded in Arroio do Meio?

The hottest day measured in Arroio do Meio between 1940 and 2025 was 16 November 1985, reaching 39.2 °C.

What is the coldest day in Arroio do Meio?

The coldest day measured in Arroio do Meio between 1940 and 2025 was 14 July 1991, at -3.8 °C.

Does it snow in Arroio do Meio?

Almost never: Arroio do Meio sees virtually no snow, with about 1 frost days per year.

Has the climate of Arroio do Meio warmed?

Yes: Arroio do Meio warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Arroio do Meio?

The wettest day measured in Arroio do Meio between 1940 and 2025 was 10 November 1977, with 133 mm of rain in 24 hours.

What was the windiest day in Arroio do Meio?

The windiest day measured in Arroio do Meio between 1940 and 2025 was 2 July 1983, with winds reaching 43.6 km/h.

What is the warmest month in Arroio do Meio?

The warmest month in Arroio do Meio is January (23.7 °C on average); the coldest is July (13.6 °C).

How much does it rain in Arroio do Meio?

Arroio do Meio receives on average 1,737 mm of precipitation per year, spread over about 153 rainy days.

Is it sunny in Arroio do Meio?

Arroio do Meio gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.

Are there tropical nights in Arroio do Meio?

Yes: Arroio do Meio has on average 46 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Arroio do Meio?

In Arroio do Meio, between 1940 and 2025, the highest apparent temperature reached 45.9 °C on 7 February 2010, and the lowest was -7.2 °C on 14 July 1991.

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