Santa Rosa climate — normals and trends

Q: What is the climate of Santa Rosa?

Santa Rosa has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.5 °C and it receives 1,740 mm of precipitation per year.

Q: What is the hottest day ever recorded in Santa Rosa?

The hottest day measured in Santa Rosa between 1940 and 2025 was 16 November 1985, reaching 40.6 °C.

Q: What is the coldest day in Santa Rosa?

The coldest day measured in Santa Rosa between 1940 and 2025 was 18 July 1975, at -3.6 °C.

Q: Does it snow in Santa Rosa?

Almost never: Santa Rosa sees virtually no snow, with about 1 frost days per year.

Q: Has the climate of Santa Rosa warmed?

Yes: Santa Rosa warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Santa Rosa?

The wettest day measured in Santa Rosa between 1940 and 2025 was 27 February 1961, with 180 mm of rain in 24 hours.

Q: What was the windiest day in Santa Rosa?

The windiest day measured in Santa Rosa between 1940 and 2025 was 5 June 1992, with winds reaching 45.2 km/h.

Q: What is the warmest month in Santa Rosa?

The warmest month in Santa Rosa is January (25.4 °C on average); the coldest is July (15.1 °C).

Q: How much does it rain in Santa Rosa?

Santa Rosa receives on average 1,740 mm of precipitation per year, spread over about 137 rainy days.

Q: Is it sunny in Santa Rosa?

Santa Rosa gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

Santa Rosa (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 20.5 °C and it receives 1,740 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 (25.4 °C on average) and the coldest is July (15.1 °C). Rainfall peaks in October.

Santa Rosa averages 1 frost days, 87 hot days (≥ 30 °C) and 137 rainy days per year.

Santa Rosa has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.6 °C (on 16 November 1985) and the coldest -3.6 °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

Santa RosaRio Grande do Sul

coords: -27.87°, -54.48°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthOctoberDriest monthJuly

Mean daily temperature

20.5°C

Average daily high

25.8°C

Average daily low

15.9°C

Annual rainfall

1,740mm

Sunshine / day

9.1h

Mean relative humidity

75%

Average peak wind

15.5km/h

Seasonal range

10.3°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

87 d/yr

Rainy days (≥ 1 mm)

137 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.7 °C

Average feels-like low

15.9 °C

Average peak gust

32.0 km/h

Tropical nights (≥ 20 °C)

89 d/yr

Solar radiation

17.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.1 °C

since 1940

+0.1 °C per decade · r² = 0.29 · 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

40.6 °C

16 November 1985

Coldest day

-3.6 °C

18 July 1975

Wettest day

180 mm

27 February 1961

Windiest day

45.2 km/h

5 June 1992

Strongest gust

101.2 km/h

5 June 1992

Hottest feels-like

44.8 °C

24 January 2022

Coldest feels-like

-7.5 °C

18 July 1975

Snowiest day

3.4 cm

20 August 1965

Sunniest day

13.6 h

5 January 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	38.3 °C7 December 2025	-0.5 °C1 July 2025	20.7 °C	1,635 mm	108	1
2024	38.0 °C12 February 2024	0.4 °C30 June 2024	21.5 °C	1,935 mm	121	0
2023	37.1 °C17 December 2023	4.0 °C13 August 2023	21.5 °C	2,019 mm	110	0
2022	39.7 °C24 January 2022	1.6 °C12 June 2022	20.5 °C	1,433 mm	110	0
2021	37.6 °C18 December 2021	0.1 °C29 July 2021	20.8 °C	1,228 mm	116	0
2020	39.2 °C11 December 2020	0.0 °C21 August 2020	21.2 °C	1,223 mm	127	0
2019	38.2 °C1 October 2019	-0.4 °C7 July 2019	21.4 °C	1,657 mm	105	2
2018	37.5 °C18 March 2018	1.2 °C17 June 2018	21.0 °C	1,329 mm	121	0
2017	36.5 °C16 December 2017	0.2 °C18 July 2017	21.4 °C	1,884 mm	112	0
2016	36.8 °C24 January 2016	0.0 °C11 June 2016	20.3 °C	1,580 mm	96	0
2015	35.8 °C13 January 2015	2.4 °C12 September 2015	21.2 °C	2,353 mm	93	0
2014	39.3 °C7 February 2014	2.0 °C14 August 2014	21.3 °C	2,179 mm	111	0
2013	39.2 °C25 December 2013	-0.1 °C24 July 2013	20.3 °C	1,546 mm	95	1
2012	38.3 °C18 February 2012	0.1 °C8 June 2012	21.8 °C	1,207 mm	142	0
2011	38.0 °C20 December 2011	-0.4 °C5 July 2011	20.7 °C	1,805 mm	107	1
2010	37.5 °C5 February 2010	-1.2 °C14 July 2010	20.2 °C	1,708 mm	96	1
2009	37.2 °C2 November 2009	-3.2 °C25 July 2009	20.6 °C	1,635 mm	133	3
2008	38.3 °C8 December 2008	0.7 °C17 June 2008	20.5 °C	1,529 mm	111	0
2007	37.3 °C30 March 2007	0.5 °C30 May 2007	20.7 °C	1,835 mm	134	0
2006	39.4 °C10 January 2006	0.3 °C22 August 2006	21.1 °C	1,555 mm	122	0
2005	38.7 °C20 February 2005	1.5 °C20 July 2005	21.3 °C	1,713 mm	132	0
2004	38.0 °C2 March 2004	-0.1 °C11 July 2004	20.8 °C	1,204 mm	131	1
2003	39.1 °C11 November 2003	0.1 °C12 July 2003	20.7 °C	1,681 mm	100	0
2002	37.9 °C10 March 2002	0.9 °C2 September 2002	21.0 °C	2,180 mm	107	0
2001	36.4 °C20 December 2001	-1.0 °C28 July 2001	20.9 °C	1,813 mm	103	1
2000	36.7 °C8 January 2000	-1.9 °C14 July 2000	20.2 °C	2,100 mm	100	4
1999	37.4 °C21 December 1999	-0.8 °C15 August 1999	20.4 °C	1,596 mm	112	1
1998	36.2 °C8 December 1998	3.0 °C25 June 1998	20.2 °C	2,576 mm	78	0
1997	35.7 °C15 January 1997	1.1 °C30 June 1997	21.0 °C	2,102 mm	114	0
1996	38.2 °C11 January 1996	-0.9 °C29 June 1996	20.1 °C	1,896 mm	86	2
1995	40.1 °C17 December 1995	-0.3 °C5 August 1995	20.7 °C	1,709 mm	103	1
1994	38.1 °C12 December 1994	-0.5 °C26 June 1994	20.8 °C	2,273 mm	92	1
1993	35.0 °C3 December 1993	-1.3 °C15 July 1993	20.1 °C	1,810 mm	108	1
1992	35.7 °C20 February 1992	-1.1 °C23 July 1992	19.9 °C	1,744 mm	82	2
1991	37.4 °C20 January 1991	-1.8 °C2 August 1991	20.9 °C	1,552 mm	116	3
1990	36.9 °C15 November 1990	-1.4 °C29 July 1990	19.9 °C	2,213 mm	78	2
1989	37.7 °C6 December 1989	-0.6 °C6 July 1989	19.9 °C	1,641 mm	92	1
1988	38.4 °C12 January 1988	-2.0 °C25 July 1988	20.1 °C	1,354 mm	110	3
1987	36.2 °C1 December 1987	-2.3 °C17 June 1987	20.0 °C	2,311 mm	81	3
1986	38.8 °C16 January 1986	2.7 °C5 September 1986	21.0 °C	1,969 mm	98	0
1985	40.6 °C16 November 1985	0.2 °C11 July 1985	21.2 °C	1,568 mm	122	0
1984	38.9 °C10 January 1984	0.5 °C27 August 1984	20.6 °C	2,043 mm	86	0
1983	36.0 °C9 December 1983	2.1 °C9 September 1983	19.9 °C	2,361 mm	92	0
1982	37.7 °C16 January 1982	2.7 °C29 June 1982	21.0 °C	1,928 mm	98	0
1981	34.7 °C27 November 1981	-2.1 °C19 June 1981	20.8 °C	1,444 mm	114	1
1980	35.7 °C22 January 1980	-0.8 °C31 July 1980	20.4 °C	1,821 mm	100	2
1979	39.5 °C26 January 1979	1.5 °C31 May 1979	20.0 °C	1,866 mm	86	0
1978	37.7 °C7 January 1978	1.2 °C31 August 1978	21.1 °C	1,189 mm	131	0
1977	36.6 °C30 December 1977	1.1 °C17 July 1977	21.3 °C	1,645 mm	119	0
1976	37.4 °C14 December 1976	-0.9 °C28 June 1976	19.4 °C	1,346 mm	73	2
1975	36.5 °C14 February 1975	-3.6 °C18 July 1975	19.9 °C	1,761 mm	68	1
1974	35.8 °C18 November 1974	0.3 °C13 June 1974	19.9 °C	1,606 mm	86	0
1973	35.6 °C12 January 1973	1.5 °C7 September 1973	20.1 °C	2,369 mm	83	0
1972	37.6 °C8 February 1972	0.3 °C9 July 1972	20.3 °C	2,341 mm	72	0
1971	37.8 °C30 December 1971	-0.9 °C12 June 1971	19.7 °C	1,789 mm	83	2
1970	37.7 °C8 December 1970	0.7 °C2 July 1970	20.5 °C	1,554 mm	94	0
1969	36.0 °C21 December 1969	1.7 °C3 August 1969	19.9 °C	1,802 mm	86	0
1968	37.4 °C12 December 1968	2.3 °C21 June 1968	20.2 °C	1,215 mm	113	0
1967	35.3 °C18 December 1967	-2.0 °C14 June 1967	20.2 °C	2,151 mm	65	1
1966	34.4 °C15 March 1966	-0.1 °C6 August 1966	19.6 °C	1,796 mm	54	1
1965	35.6 °C22 January 1965	0.6 °C7 July 1965	19.8 °C	1,626 mm	71	0
1964	36.2 °C24 December 1964	0.5 °C29 June 1964	19.5 °C	1,204 mm	94	0
1963	38.6 °C2 January 1963	-0.9 °C6 August 1963	20.6 °C	1,783 mm	97	1
1962	39.2 °C24 December 1962	0.6 °C30 May 1962	19.2 °C	1,036 mm	81	0
1961	35.0 °C31 January 1961	-0.7 °C16 June 1961	20.6 °C	1,807 mm	81	2
1960	35.9 °C24 December 1960	0.3 °C25 June 1960	19.9 °C	1,316 mm	86	0
1959	33.9 °C21 January 1959	3.4 °C8 August 1959	20.2 °C	2,044 mm	49	0
1958	36.5 °C7 January 1958	3.5 °C19 June 1958	20.2 °C	1,600 mm	60	0
1957	34.3 °C17 October 1957	1.3 °C22 July 1957	20.1 °C	1,562 mm	49	0
1956	32.3 °C5 February 1956	1.7 °C15 May 1956	19.0 °C	1,499 mm	17	0
1955	34.0 °C29 November 1955	-1.1 °C8 July 1955	19.6 °C	1,821 mm	50	2
1954	33.7 °C10 December 1954	4.0 °C8 August 1954	20.0 °C	1,903 mm	31	0
1953	34.2 °C26 December 1953	3.0 °C20 July 1953	20.8 °C	1,921 mm	43	0
1952	35.4 °C27 December 1952	3.8 °C10 June 1952	20.1 °C	1,376 mm	48	0
1951	31.9 °C25 September 1951	3.7 °C6 July 1951	20.0 °C	1,873 mm	25	0
1950	32.2 °C26 December 1950	1.7 °C6 August 1950	19.8 °C	1,754 mm	19	0
1949	34.1 °C27 December 1949	3.1 °C19 July 1949	19.7 °C	1,613 mm	33	0
1948	32.2 °C25 September 1948	2.4 °C8 August 1948	19.9 °C	2,578 mm	15	0
1947	32.1 °C29 November 1947	1.1 °C11 July 1947	19.8 °C	1,851 mm	14	0
1946	32.0 °C14 February 1946	1.5 °C21 July 1946	19.8 °C	2,217 mm	26	0
1945	36.0 °C10 January 1945	1.1 °C24 June 1945	20.7 °C	1,400 mm	46	0
1944	34.8 °C26 March 1944	0.5 °C27 June 1944	21.6 °C	1,300 mm	82	0
1943	38.5 °C17 January 1943	3.2 °C29 August 1943	20.9 °C	758 mm	89	0
1942	39.9 °C26 November 1942	-0.4 °C19 June 1942	20.1 °C	1,319 mm	81	2
1941	32.1 °C25 November 1941	1.2 °C26 June 1941	20.2 °C	2,238 mm	37	0
1940	33.4 °C8 March 1940	3.5 °C9 August 1940	20.1 °C	1,922 mm	48	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

26.2 °C

+0.4 °C

Hot days (≥ 30 °C)

108 d/yr

+21

Frost days (< 0 °C)

1 d/yr

Annual rainfall

1635 mm

-105 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	32.0 °C	+1.3 °C	51 mm	-114 mm
Feb	33.2 °C	+3.2 °C	93 mm	-46 mm
Mar	32.0 °C	+2.9 °C	47 mm	-77 mm
Apr	25.5 °C	-0.4 °C	85 mm	-54 mm
May	23.7 °C	+1.3 °C	168 mm	+24 mm
Jun	17.5 °C	-2.8 °C	267 mm	+118 mm
Jul	20.5 °C	+0.2 °C	55 mm	-63 mm
Aug	21.4 °C	-0.7 °C	129 mm	+11 mm
Sep	23.9 °C	+0.1 °C	179 mm	+20 mm
Oct	25.7 °C	-0.4 °C	301 mm	+103 mm
Nov	29.3 °C	+1.0 °C	54 mm	-93 mm
Dec	30.4 °C	+0.1 °C	207 mm	+67 mm

The year's extremes

Hottest day

38.3 °C

7 Dec 2025

Coldest day

-0.5 °C

1 Jul 2025

Wettest day

78.6 mm

12 Oct 2025

Windiest day

32.9 km/h

10 Dec 2025

Strongest gust

76.3 km/h

14 Jun 2025

Hottest feels-like

42.7 °C

2 Mar 2025

Coldest feels-like

-4.0 °C

1 Jul 2025

Sunniest day

13.6 h

4 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 Santa Rosa?

Santa Rosa has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.5 °C and it receives 1,740 mm of precipitation per year.

What is the hottest day ever recorded in Santa Rosa?

The hottest day measured in Santa Rosa between 1940 and 2025 was 16 November 1985, reaching 40.6 °C.

What is the coldest day in Santa Rosa?

The coldest day measured in Santa Rosa between 1940 and 2025 was 18 July 1975, at -3.6 °C.

Does it snow in Santa Rosa?

Almost never: Santa Rosa sees virtually no snow, with about 1 frost days per year.

Has the climate of Santa Rosa warmed?

Yes: Santa Rosa warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Santa Rosa?

The wettest day measured in Santa Rosa between 1940 and 2025 was 27 February 1961, with 180 mm of rain in 24 hours.

What was the windiest day in Santa Rosa?

The windiest day measured in Santa Rosa between 1940 and 2025 was 5 June 1992, with winds reaching 45.2 km/h.

What is the warmest month in Santa Rosa?

The warmest month in Santa Rosa is January (25.4 °C on average); the coldest is July (15.1 °C).

How much does it rain in Santa Rosa?

Santa Rosa receives on average 1,740 mm of precipitation per year, spread over about 137 rainy days.

Is it sunny in Santa Rosa?

Santa Rosa gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.

What is the biggest single-day snowfall in Santa Rosa?

The heaviest 24-hour snowfall measured in Santa Rosa between 1940 and 2025 was 20 August 1965, with 3.4 cm.

Are there tropical nights in Santa Rosa?

Yes: Santa Rosa has on average 89 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Santa Rosa?

In Santa Rosa, between 1940 and 2025, the highest apparent temperature reached 44.8 °C on 24 January 2022, and the lowest was -7.5 °C on 18 July 1975.

Compare Santa Rosa with another city

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

Nearby cities

The climate around Santa Rosa

Other cities — Brazil

All cities in Brazil →