Petrópolis climate — normals and trends

Q: What is the climate of Petrópolis?

Petrópolis has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.3 °C and it receives 1,965 mm of precipitation per year.

Q: What is the hottest day ever recorded in Petrópolis?

The hottest day measured in Petrópolis between 1940 and 2025 was 28 September 1961, reaching 37.9 °C.

Q: What is the coldest day in Petrópolis?

The coldest day measured in Petrópolis between 1940 and 2025 was 18 July 2000, at 5.4 °C.

Q: Does it snow in Petrópolis?

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

Q: Has the climate of Petrópolis warmed?

Yes: Petrópolis warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Petrópolis?

The wettest day measured in Petrópolis between 1940 and 2025 was 30 November 1946, with 167 mm of rain in 24 hours.

Q: What was the windiest day in Petrópolis?

The windiest day measured in Petrópolis between 1940 and 2025 was 17 December 1989, with winds reaching 26.0 km/h.

Q: What is the warmest month in Petrópolis?

The warmest month in Petrópolis is February (24.3 °C on average); the coldest is July (17.9 °C).

Q: How much does it rain in Petrópolis?

Petrópolis receives on average 1,965 mm of precipitation per year, spread over about 189 rainy days.

Q: Is it sunny in Petrópolis?

Petrópolis gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Petrópolis (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.3 °C and it receives 1,965 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 (24.3 °C on average) and the coldest is July (17.9 °C). Rainfall peaks in January.

Petrópolis averages 0 frost days, 54 hot days (≥ 30 °C) and 189 rainy days per year.

Petrópolis has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.

The hottest day of the period reached 37.9 °C (on 28 September 1961) and the coldest 5.4 °C (on 18 July 2000).

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

PetrópolisRio de Janeiro

coords: -22.50°, -43.18°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthFebruaryColdest monthJulyWettest monthJanuaryDriest monthJuly

Mean daily temperature

21.3°C

Average daily high

25.8°C

Average daily low

17.8°C

Annual rainfall

1,965mm

Sunshine / day

9.2h

Mean relative humidity

82%

Average peak wind

9.1km/h

Seasonal range

6.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

54 d/yr

Rainy days (≥ 1 mm)

189 d/yr

Annual snowfall

0.0 cm

Average feels-like high

28.8 °C

Average feels-like low

19.5 °C

Average peak gust

28.0 km/h

Tropical nights (≥ 20 °C)

107 d/yr

Solar radiation

16.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.6 °C

since 1940

+0.2 °C per decade · r² = 0.54 · 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

37.9 °C

28 September 1961

Coldest day

5.4 °C

18 July 2000

Wettest day

167 mm

30 November 1946

Windiest day

26.0 km/h

17 December 1989

Strongest gust

79.9 km/h

10 December 2025

Hottest feels-like

42.8 °C

12 November 2013

Coldest feels-like

3.5 °C

18 July 2000

Sunniest day

13.4 h

28 December 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	34.8 °C17 February 2025	8.6 °C30 July 2025	21.4 °C	1,218 mm	75
2024	34.7 °C28 November 2024	6.9 °C13 August 2024	22.3 °C	1,710 mm	96
2023	37.7 °C18 November 2023	9.2 °C4 July 2023	22.0 °C	1,828 mm	95
2022	33.7 °C27 January 2022	8.8 °C16 June 2022	21.1 °C	2,039 mm	59
2021	34.3 °C14 September 2021	6.8 °C20 July 2021	21.0 °C	1,865 mm	47
2020	36.3 °C2 October 2020	9.5 °C27 May 2020	21.5 °C	1,964 mm	55
2019	34.9 °C5 November 2019	9.0 °C9 July 2019	22.4 °C	1,580 mm	91
2018	33.9 °C18 January 2018	9.3 °C22 May 2018	22.1 °C	1,787 mm	67
2017	33.5 °C10 January 2017	9.7 °C7 August 2017	21.8 °C	1,445 mm	77
2016	34.1 °C10 February 2016	6.9 °C15 June 2016	22.0 °C	1,812 mm	93
2015	35.1 °C24 September 2015	11.1 °C5 August 2015	22.5 °C	1,651 mm	92
2014	35.2 °C3 January 2014	9.7 °C8 August 2014	22.1 °C	1,207 mm	100
2013	36.2 °C12 November 2013	9.0 °C9 May 2013	21.4 °C	2,089 mm	66
2012	36.4 °C19 September 2012	10.3 °C29 September 2012	21.7 °C	1,669 mm	60
2011	33.4 °C28 January 2011	8.3 °C4 September 2011	21.2 °C	1,707 mm	69
2010	35.3 °C8 February 2010	7.5 °C18 August 2010	21.9 °C	1,873 mm	93
2009	33.9 °C28 September 2009	7.2 °C4 June 2009	22.0 °C	2,449 mm	80
2008	33.7 °C27 October 2008	8.7 °C15 July 2008	21.2 °C	2,331 mm	56
2007	34.1 °C1 November 2007	7.7 °C30 July 2007	21.8 °C	1,705 mm	81
2006	35.6 °C25 January 2006	8.4 °C6 September 2006	21.8 °C	1,704 mm	76
2005	35.2 °C14 October 2005	11.0 °C9 July 2005	22.0 °C	2,022 mm	62
2004	33.3 °C31 October 2004	9.0 °C11 August 2004	21.4 °C	1,916 mm	46
2003	35.2 °C16 December 2003	10.0 °C19 August 2003	21.8 °C	1,920 mm	83
2002	34.1 °C22 January 2002	11.3 °C3 September 2002	22.5 °C	1,594 mm	98
2001	32.8 °C10 February 2001	10.8 °C30 July 2001	21.8 °C	1,534 mm	74
2000	34.2 °C15 January 2000	5.4 °C18 July 2000	21.3 °C	1,610 mm	64
1999	34.3 °C20 January 1999	9.8 °C13 July 1999	20.8 °C	1,702 mm	51
1998	34.3 °C5 February 1998	10.0 °C7 June 1998	21.7 °C	1,913 mm	73
1997	35.2 °C9 September 1997	9.2 °C10 June 1997	21.8 °C	1,837 mm	92
1996	34.6 °C27 January 1996	8.6 °C24 July 1996	21.2 °C	2,163 mm	80
1995	36.1 °C17 January 1995	9.8 °C6 September 1995	21.8 °C	2,341 mm	87
1994	34.9 °C17 February 1994	6.3 °C27 June 1994	22.0 °C	2,265 mm	92
1993	34.5 °C1 November 1993	10.7 °C14 June 1993	22.0 °C	1,764 mm	89
1992	34.1 °C22 February 1992	9.7 °C27 July 1992	21.7 °C	1,927 mm	48
1991	33.4 °C26 December 1991	9.9 °C5 September 1991	21.5 °C	1,955 mm	35
1990	34.4 °C25 January 1990	9.5 °C16 September 1990	21.7 °C	1,638 mm	54
1989	32.6 °C21 February 1989	8.4 °C20 July 1989	21.2 °C	1,939 mm	29
1988	33.9 °C30 January 1988	6.0 °C6 June 1988	21.3 °C	2,106 mm	52
1987	33.8 °C9 January 1987	9.3 °C26 June 1987	21.8 °C	1,982 mm	59
1986	33.1 °C7 October 1986	9.4 °C13 July 1986	21.7 °C	1,921 mm	54
1985	33.2 °C4 February 1985	8.8 °C19 July 1985	21.1 °C	2,095 mm	36
1984	34.0 °C16 January 1984	9.9 °C27 August 1984	21.9 °C	1,587 mm	45
1983	34.0 °C26 February 1983	8.4 °C6 August 1983	21.5 °C	2,636 mm	34
1982	32.4 °C30 October 1982	9.9 °C6 May 1982	21.3 °C	2,133 mm	22
1981	34.9 °C29 September 1981	9.6 °C9 July 1981	21.0 °C	2,046 mm	40
1980	33.2 °C27 October 1980	9.9 °C18 June 1980	21.5 °C	1,849 mm	48
1979	32.2 °C15 December 1979	5.6 °C1 June 1979	20.8 °C	2,248 mm	37
1978	33.0 °C31 January 1978	7.6 °C2 June 1978	21.1 °C	1,825 mm	39
1977	33.9 °C28 February 1977	11.6 °C21 May 1977	21.9 °C	1,542 mm	57
1976	33.4 °C19 January 1976	10.0 °C16 August 1976	21.0 °C	2,184 mm	34
1975	34.0 °C9 December 1975	7.5 °C8 July 1975	21.0 °C	2,107 mm	44
1974	32.7 °C26 November 1974	8.4 °C16 June 1974	21.1 °C	1,729 mm	40
1973	35.1 °C24 January 1973	10.7 °C17 May 1973	21.7 °C	2,109 mm	65
1972	34.1 °C4 January 1972	9.8 °C30 July 1972	21.4 °C	2,081 mm	48
1971	33.9 °C5 January 1971	9.8 °C14 September 1971	21.1 °C	1,709 mm	55
1970	33.0 °C30 January 1970	9.8 °C13 August 1970	21.1 °C	1,418 mm	46
1969	35.3 °C9 January 1969	10.4 °C7 June 1969	21.2 °C	1,647 mm	48
1968	34.8 °C24 December 1968	8.0 °C14 July 1968	20.1 °C	1,412 mm	33
1967	33.6 °C12 October 1967	10.4 °C19 July 1967	21.3 °C	2,205 mm	31
1966	33.9 °C5 December 1966	9.3 °C23 September 1966	20.7 °C	2,246 mm	54
1965	32.9 °C21 December 1965	9.3 °C13 July 1965	20.7 °C	2,601 mm	29
1964	33.0 °C18 February 1964	8.9 °C29 July 1964	19.9 °C	2,289 mm	18
1963	36.0 °C14 October 1963	9.2 °C22 June 1963	21.1 °C	1,419 mm	67
1962	31.2 °C18 February 1962	8.6 °C26 August 1962	19.8 °C	2,938 mm	13
1961	37.9 °C28 September 1961	10.7 °C19 June 1961	21.6 °C	2,301 mm	69
1960	35.5 °C25 September 1960	9.3 °C15 July 1960	20.2 °C	2,252 mm	26
1959	32.7 °C26 February 1959	10.1 °C13 June 1959	21.1 °C	1,694 mm	55
1958	33.8 °C16 November 1958	7.9 °C22 September 1958	20.9 °C	1,921 mm	50
1957	33.4 °C19 October 1957	9.4 °C23 July 1957	20.6 °C	1,940 mm	28
1956	34.1 °C27 January 1956	8.9 °C13 July 1956	19.9 °C	1,690 mm	48
1955	34.6 °C1 October 1955	9.8 °C4 August 1955	20.6 °C	1,473 mm	58
1954	35.1 °C22 September 1954	9.2 °C30 August 1954	21.0 °C	2,521 mm	46
1953	32.8 °C30 January 1953	10.3 °C13 July 1953	20.8 °C	2,218 mm	30
1952	32.8 °C31 January 1952	10.5 °C17 July 1952	20.6 °C	2,405 mm	17
1951	35.2 °C16 November 1951	9.2 °C14 August 1951	20.4 °C	1,623 mm	48
1950	33.1 °C20 February 1950	8.5 °C14 July 1950	20.5 °C	2,320 mm	29
1949	32.1 °C18 March 1949	10.1 °C3 July 1949	20.1 °C	2,386 mm	18
1948	33.7 °C27 January 1948	8.9 °C31 August 1948	20.6 °C	1,617 mm	54
1947	34.6 °C8 January 1947	7.3 °C4 August 1947	20.2 °C	2,308 mm	32
1946	32.7 °C2 November 1946	8.9 °C30 July 1946	21.2 °C	2,499 mm	38
1945	33.5 °C13 November 1945	10.1 °C14 July 1945	20.9 °C	2,300 mm	35
1944	33.5 °C2 October 1944	9.0 °C22 August 1944	20.6 °C	2,394 mm	27
1943	31.0 °C19 January 1943	8.3 °C5 September 1943	19.6 °C	2,186 mm	8
1942	34.2 °C7 October 1942	6.9 °C24 June 1942	20.0 °C	1,834 mm	30
1941	33.4 °C13 January 1941	10.1 °C1 July 1941	20.7 °C	2,593 mm	24
1940	32.7 °C23 August 1940	11.0 °C28 September 1940	21.0 °C	2,769 mm	28

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

26.3 °C

+0.5 °C

Hot days (≥ 30 °C)

75 d/yr

+21

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1218 mm

-747 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.0 °C	+0.4 °C	266 mm	-52 mm
Feb	31.4 °C	+2.5 °C	20 mm	-232 mm
Mar	28.6 °C	+0.8 °C	147 mm	-102 mm
Apr	25.8 °C	-0.2 °C	165 mm	+43 mm
May	24.8 °C	+0.7 °C	20 mm	-52 mm
Jun	24.0 °C	+0.7 °C	34 mm	-12 mm
Jul	22.0 °C	-1.0 °C	26 mm	-17 mm
Aug	23.8 °C	-0.4 °C	23 mm	-29 mm
Sep	24.9 °C	-0.1 °C	47 mm	-43 mm
Oct	25.5 °C	-0.2 °C	120 mm	-42 mm
Nov	26.4 °C	+0.3 °C	158 mm	-90 mm
Dec	29.6 °C	+2.3 °C	192 mm	-120 mm

The year's extremes

Hottest day

34.8 °C

17 Feb 2025

Coldest day

8.6 °C

30 Jul 2025

Wettest day

40.0 mm

5 Apr 2025

Windiest day

25.5 km/h

10 Dec 2025

Strongest gust

79.9 km/h

10 Dec 2025

Hottest feels-like

40.8 °C

21 Jan 2025

Coldest feels-like

7.6 °C

14 Jun 2025

Sunniest day

13.4 h

22 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 Petrópolis?

Petrópolis has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.3 °C and it receives 1,965 mm of precipitation per year.

What is the hottest day ever recorded in Petrópolis?

The hottest day measured in Petrópolis between 1940 and 2025 was 28 September 1961, reaching 37.9 °C.

What is the coldest day in Petrópolis?

The coldest day measured in Petrópolis between 1940 and 2025 was 18 July 2000, at 5.4 °C.

Does it snow in Petrópolis?

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

Has the climate of Petrópolis warmed?

Yes: Petrópolis warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Petrópolis?

The wettest day measured in Petrópolis between 1940 and 2025 was 30 November 1946, with 167 mm of rain in 24 hours.

What was the windiest day in Petrópolis?

The windiest day measured in Petrópolis between 1940 and 2025 was 17 December 1989, with winds reaching 26.0 km/h.

What is the warmest month in Petrópolis?

The warmest month in Petrópolis is February (24.3 °C on average); the coldest is July (17.9 °C).

How much does it rain in Petrópolis?

Petrópolis receives on average 1,965 mm of precipitation per year, spread over about 189 rainy days.

Is it sunny in Petrópolis?

Petrópolis gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Are there tropical nights in Petrópolis?

Yes: Petrópolis has on average 107 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Petrópolis?

In Petrópolis, between 1940 and 2025, the highest apparent temperature reached 42.8 °C on 12 November 2013, and the lowest was 3.5 °C on 18 July 2000.

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