Guariba climate — normals and trends

Q: What is the climate of Guariba?

Guariba has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.5 °C and it receives 1,472 mm of precipitation per year.

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

The hottest day measured in Guariba between 1940 and 2025 was 17 October 1963, reaching 40.6 °C.

Q: What is the coldest day in Guariba?

The coldest day measured in Guariba between 1940 and 2025 was 21 July 1981, at 1.2 °C.

Q: Does it snow in Guariba?

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

Q: Has the climate of Guariba warmed?

Yes: Guariba warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Guariba?

The wettest day measured in Guariba between 1940 and 2025 was 1 April 1964, with 141 mm of rain in 24 hours.

Q: What was the windiest day in Guariba?

The windiest day measured in Guariba between 1940 and 2025 was 7 June 2011, with winds reaching 33.5 km/h.

Q: What is the warmest month in Guariba?

The warmest month in Guariba is February (24.3 °C on average); the coldest is June (19.2 °C).

Q: How much does it rain in Guariba?

Guariba receives on average 1,472 mm of precipitation per year, spread over about 152 rainy days.

Q: Is it sunny in Guariba?

Guariba gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Guariba (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 22.5 °C and it receives 1,472 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 June (19.2 °C). Rainfall peaks in January.

Guariba averages 0 frost days, 103 hot days (≥ 30 °C) and 152 rainy days per year.

Guariba has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.6 °C (on 17 October 1963) and the coldest 1.2 °C (on 21 July 1981).

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

GuaribaSão Paulo

coords: -21.36°, -48.23°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthFebruaryColdest monthJuneWettest monthJanuaryDriest monthJuly

Mean daily temperature

22.5°C

Average daily high

28.1°C

Average daily low

17.9°C

Annual rainfall

1,472mm

Sunshine / day

10.0h

Mean relative humidity

71%

Average peak wind

13.0km/h

Seasonal range

5.1°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

103 d/yr

Rainy days (≥ 1 mm)

152 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.5 °C

Average feels-like low

18.6 °C

Average peak gust

29.9 km/h

Tropical nights (≥ 20 °C)

119 d/yr

Solar radiation

18.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.0 °C

since 1940

+0.2 °C per decade · r² = 0.63 · 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

17 October 1963

Coldest day

1.2 °C

21 July 1981

Wettest day

141 mm

1 April 1964

Windiest day

33.5 km/h

7 June 2011

Strongest gust

80.3 km/h

30 July 1989

Hottest feels-like

43.1 °C

29 October 2007

Coldest feels-like

-2.3 °C

21 July 1981

Sunniest day

13.3 h

14 December 1948

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.1 °C6 October 2025	3.4 °C25 June 2025	23.0 °C	871 mm	171
2024	39.4 °C8 October 2024	5.7 °C11 August 2024	23.9 °C	1,185 mm	206
2023	38.6 °C13 November 2023	5.4 °C18 June 2023	23.2 °C	1,198 mm	163
2022	35.1 °C10 September 2022	6.1 °C18 May 2022	22.5 °C	1,083 mm	133
2021	38.3 °C20 September 2021	3.1 °C20 July 2021	23.0 °C	959 mm	163
2020	39.9 °C7 October 2020	5.2 °C27 May 2020	23.0 °C	1,043 mm	136
2019	37.1 °C12 September 2019	5.7 °C7 July 2019	23.8 °C	1,076 mm	169
2018	36.6 °C24 September 2018	7.8 °C11 August 2018	23.9 °C	1,072 mm	183
2017	37.6 °C14 October 2017	9.1 °C11 June 2017	23.8 °C	1,112 mm	175
2016	37.3 °C19 October 2016	5.3 °C18 July 2016	23.5 °C	1,358 mm	180
2015	38.4 °C20 October 2015	12.4 °C30 May 2015	23.9 °C	1,437 mm	159
2014	39.0 °C16 October 2014	10.4 °C27 May 2014	24.3 °C	887 mm	206
2013	36.2 °C28 September 2013	6.0 °C28 August 2013	22.9 °C	1,290 mm	134
2012	38.1 °C31 October 2012	7.4 °C19 July 2012	23.5 °C	1,313 mm	156
2011	36.8 °C30 September 2011	5.2 °C28 June 2011	23.1 °C	1,415 mm	149
2010	35.8 °C17 September 2010	8.3 °C13 May 2010	23.4 °C	1,175 mm	173
2009	34.5 °C6 March 2009	5.0 °C3 June 2009	22.9 °C	1,726 mm	100
2008	37.6 °C15 October 2008	8.2 °C17 June 2008	22.9 °C	1,352 mm	115
2007	37.1 °C29 October 2007	8.2 °C26 July 2007	23.6 °C	1,396 mm	170
2006	35.8 °C15 September 2006	8.3 °C6 September 2006	22.9 °C	1,424 mm	125
2005	35.7 °C13 October 2005	10.5 °C11 August 2005	23.3 °C	1,367 mm	141
2004	36.7 °C24 September 2004	8.3 °C27 May 2004	22.4 °C	1,630 mm	97
2003	36.8 °C25 September 2003	8.5 °C27 May 2003	22.9 °C	1,231 mm	117
2002	37.1 °C12 October 2002	6.4 °C3 September 2002	23.7 °C	1,219 mm	173
2001	36.0 °C10 September 2001	7.6 °C27 June 2001	23.0 °C	1,239 mm	152
2000	37.2 °C13 October 2000	4.3 °C18 July 2000	22.7 °C	1,666 mm	121
1999	36.3 °C1 October 1999	7.9 °C19 April 1999	22.7 °C	1,303 mm	132
1998	35.8 °C17 September 1998	9.6 °C9 June 1998	22.9 °C	1,541 mm	141
1997	36.4 °C10 November 1997	6.7 °C9 June 1997	22.7 °C	1,655 mm	130
1996	34.7 °C30 January 1996	6.9 °C13 July 1996	22.4 °C	1,860 mm	111
1995	35.1 °C11 September 1995	10.2 °C8 June 1995	22.8 °C	1,817 mm	127
1994	37.1 °C4 November 1994	1.8 °C26 June 1994	23.2 °C	1,366 mm	143
1993	35.2 °C2 December 1993	6.7 °C1 August 1993	22.6 °C	1,468 mm	100
1992	32.5 °C15 November 1992	9.7 °C24 July 1992	22.3 °C	1,738 mm	55
1991	33.8 °C16 October 1991	9.5 °C3 August 1991	22.7 °C	1,965 mm	100
1990	36.9 °C12 October 1990	5.3 °C22 June 1990	23.0 °C	1,259 mm	151
1989	34.5 °C23 September 1989	7.3 °C12 July 1989	22.2 °C	1,586 mm	91
1988	37.2 °C27 September 1988	5.2 °C6 June 1988	22.7 °C	1,419 mm	123
1987	36.9 °C18 October 1987	4.6 °C8 August 1987	22.9 °C	1,305 mm	135
1986	35.7 °C7 October 1986	8.2 °C2 June 1986	22.6 °C	1,334 mm	103
1985	37.4 °C17 November 1985	3.9 °C9 June 1985	22.6 °C	1,227 mm	121
1984	36.2 °C5 November 1984	7.8 °C27 August 1984	23.2 °C	1,303 mm	128
1983	32.9 °C17 February 1983	8.3 °C4 August 1983	22.3 °C	2,344 mm	60
1982	33.3 °C12 September 1982	11.0 °C1 August 1982	22.2 °C	1,834 mm	71
1981	35.6 °C28 September 1981	1.2 °C21 July 1981	22.5 °C	1,361 mm	94
1980	36.8 °C28 October 1980	7.5 °C15 June 1980	22.7 °C	1,404 mm	107
1979	35.3 °C22 November 1979	1.7 °C1 June 1979	22.0 °C	1,413 mm	82
1978	34.1 °C25 October 1978	4.7 °C16 August 1978	22.3 °C	1,299 mm	99
1977	33.7 °C11 March 1977	6.4 °C18 May 1977	22.9 °C	1,342 mm	117
1976	34.4 °C19 January 1976	7.0 °C6 July 1976	21.5 °C	1,880 mm	48
1975	34.7 °C8 September 1975	5.4 °C18 July 1975	22.5 °C	1,341 mm	122
1974	35.2 °C19 November 1974	8.8 °C17 August 1974	22.2 °C	1,470 mm	108
1973	35.3 °C18 September 1973	5.1 °C20 June 1973	22.8 °C	1,371 mm	119
1972	35.4 °C26 October 1972	4.3 °C9 July 1972	22.1 °C	1,560 mm	68
1971	35.3 °C4 February 1971	7.1 °C10 June 1971	22.2 °C	1,279 mm	92
1970	34.9 °C17 October 1970	9.4 °C3 July 1970	22.5 °C	972 mm	114
1969	35.7 °C11 September 1969	3.9 °C11 July 1969	23.1 °C	929 mm	142
1968	36.6 °C6 November 1968	6.1 °C18 May 1968	21.9 °C	937 mm	95
1967	35.9 °C6 September 1967	6.8 °C10 June 1967	22.5 °C	1,543 mm	94
1966	35.1 °C16 September 1966	7.7 °C6 August 1966	21.9 °C	1,471 mm	52
1965	34.8 °C10 September 1965	3.9 °C12 July 1965	21.4 °C	1,841 mm	39
1964	33.1 °C1 September 1964	6.1 °C28 July 1964	21.0 °C	2,082 mm	24
1963	40.6 °C17 October 1963	7.0 °C21 June 1963	23.4 °C	970 mm	124
1962	34.8 °C11 September 1962	5.2 °C7 July 1962	21.1 °C	1,869 mm	31
1961	39.1 °C28 September 1961	10.9 °C4 August 1961	23.1 °C	1,468 mm	94
1960	38.1 °C24 September 1960	7.7 °C25 June 1960	21.7 °C	1,816 mm	42
1959	35.5 °C4 October 1959	6.4 °C8 June 1959	22.5 °C	1,463 mm	94
1958	35.0 °C3 December 1958	9.3 °C22 June 1958	22.1 °C	1,344 mm	91
1957	36.7 °C20 October 1957	4.1 °C22 July 1957	21.8 °C	1,547 mm	50
1956	35.0 °C8 October 1956	7.5 °C5 June 1956	21.3 °C	1,213 mm	70
1955	37.3 °C17 September 1955	6.5 °C25 May 1955	22.2 °C	1,438 mm	75
1954	35.9 °C22 September 1954	6.4 °C21 June 1954	22.0 °C	1,777 mm	64
1953	33.6 °C21 August 1953	10.5 °C5 July 1953	22.0 °C	1,754 mm	25
1952	35.5 °C30 September 1952	6.9 °C17 July 1952	21.5 °C	1,750 mm	31
1951	35.1 °C26 September 1951	10.1 °C16 July 1951	21.8 °C	1,302 mm	61
1950	35.0 °C17 September 1950	8.4 °C12 June 1950	21.6 °C	1,931 mm	49
1949	35.3 °C12 October 1949	9.4 °C19 May 1949	21.7 °C	1,901 mm	38
1948	36.9 °C26 September 1948	7.9 °C16 June 1948	22.2 °C	1,371 mm	68
1947	32.8 °C8 January 1947	8.0 °C4 August 1947	21.2 °C	1,940 mm	22
1946	32.6 °C6 September 1946	7.9 °C27 July 1946	21.8 °C	1,869 mm	40
1945	33.0 °C29 September 1945	10.1 °C26 June 1945	21.5 °C	2,645 mm	28
1944	35.8 °C7 September 1944	10.2 °C15 June 1944	22.1 °C	1,848 mm	39
1943	31.5 °C17 January 1943	9.9 °C26 June 1943	20.8 °C	1,462 mm	10
1942	38.2 °C27 November 1942	4.4 °C18 June 1942	21.7 °C	1,068 mm	87
1941	31.9 °C26 October 1941	9.0 °C30 May 1941	21.5 °C	2,274 mm	21
1940	33.8 °C23 August 1940	9.9 °C18 August 1940	21.6 °C	2,053 mm	24

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

29.4 °C

+1.3 °C

Hot days (≥ 30 °C)

171 d/yr

+68

Frost days (< 0 °C)

0 d/yr

Annual rainfall

871 mm

-601 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.5 °C	+1.7 °C	158 mm	-93 mm
Feb	31.1 °C	+2.1 °C	83 mm	-117 mm
Mar	31.5 °C	+2.7 °C	79 mm	-82 mm
Apr	28.6 °C	+0.7 °C	103 mm	+23 mm
May	27.2 °C	+1.3 °C	11 mm	-41 mm
Jun	25.9 °C	+0.6 °C	44 mm	+12 mm
Jul	26.1 °C	+0.4 °C	3 mm	-23 mm
Aug	28.9 °C	+0.7 °C	2 mm	-24 mm
Sep	31.8 °C	+1.9 °C	18 mm	-46 mm
Oct	30.1 °C	+0.3 °C	112 mm	-37 mm
Nov	30.1 °C	+1.0 °C	95 mm	-93 mm
Dec	30.8 °C	+2.2 °C	164 mm	-81 mm

The year's extremes

Hottest day

36.1 °C

6 Oct 2025

Coldest day

3.4 °C

25 Jun 2025

Wettest day

39.6 mm

3 Jan 2025

Windiest day

27.3 km/h

10 Dec 2025

Strongest gust

69.1 km/h

9 Dec 2025

Hottest feels-like

40.8 °C

26 Dec 2025

Coldest feels-like

0.2 °C

25 Jun 2025

Sunniest day

13.2 h

5 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 Guariba?

Guariba has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.5 °C and it receives 1,472 mm of precipitation per year.

What is the hottest day ever recorded in Guariba?

The hottest day measured in Guariba between 1940 and 2025 was 17 October 1963, reaching 40.6 °C.

What is the coldest day in Guariba?

The coldest day measured in Guariba between 1940 and 2025 was 21 July 1981, at 1.2 °C.

Does it snow in Guariba?

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

Has the climate of Guariba warmed?

Yes: Guariba warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Guariba?

The wettest day measured in Guariba between 1940 and 2025 was 1 April 1964, with 141 mm of rain in 24 hours.

What was the windiest day in Guariba?

The windiest day measured in Guariba between 1940 and 2025 was 7 June 2011, with winds reaching 33.5 km/h.

What is the warmest month in Guariba?

The warmest month in Guariba is February (24.3 °C on average); the coldest is June (19.2 °C).

How much does it rain in Guariba?

Guariba receives on average 1,472 mm of precipitation per year, spread over about 152 rainy days.

Is it sunny in Guariba?

Guariba gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Are there tropical nights in Guariba?

Yes: Guariba has on average 119 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Guariba?

In Guariba, between 1940 and 2025, the highest apparent temperature reached 43.1 °C on 29 October 2007, and the lowest was -2.3 °C on 21 July 1981.

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