Guaíra climate — normals and trends

Q: What is the climate of Guaíra?

Guaíra has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 22.4 °C and it receives 1,507 mm of precipitation per year.

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

The hottest day measured in Guaíra between 1940 and 2025 was 2 October 2020, reaching 41.5 °C.

Q: What is the coldest day in Guaíra?

The coldest day measured in Guaíra between 1940 and 2025 was 18 July 1975, at -0.2 °C.

Q: Does it snow in Guaíra?

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

Q: Has the climate of Guaíra warmed?

Yes: Guaíra warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Guaíra?

The wettest day measured in Guaíra between 1940 and 2025 was 17 February 2023, with 169 mm of rain in 24 hours.

Q: What was the windiest day in Guaíra?

The windiest day measured in Guaíra between 1940 and 2025 was 15 September 1956, with winds reaching 52.0 km/h.

Q: What is the warmest month in Guaíra?

The warmest month in Guaíra is January (26.0 °C on average); the coldest is July (17.6 °C).

Q: How much does it rain in Guaíra?

Guaíra receives on average 1,507 mm of precipitation per year, spread over about 139 rainy days.

Q: Is it sunny in Guaíra?

Guaíra gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.

Guaíra (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 22.4 °C and it receives 1,507 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 (26.0 °C on average) and the coldest is July (17.6 °C). Rainfall peaks in October.

Guaíra averages 0 frost days, 117 hot days (≥ 30 °C) and 139 rainy days per year.

Guaíra has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.

The hottest day of the period reached 41.5 °C (on 2 October 2020) and the coldest -0.2 °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

GuaíraParaná

coords: -24.08°, -54.25°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthOctoberDriest monthAugust

Mean daily temperature

22.4°C

Average daily high

27.5°C

Average daily low

18.3°C

Annual rainfall

1,507mm

Sunshine / day

9.5h

Mean relative humidity

76%

Average peak wind

13.4km/h

Seasonal range

8.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

117 d/yr

Rainy days (≥ 1 mm)

139 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.3 °C

Average feels-like low

19.4 °C

Average peak gust

30.3 km/h

Tropical nights (≥ 20 °C)

157 d/yr

Solar radiation

17.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.26 · 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

41.5 °C

2 October 2020

Coldest day

-0.2 °C

18 July 1975

Wettest day

169 mm

17 February 2023

Windiest day

52.0 km/h

15 September 1956

Strongest gust

82.8 km/h

27 June 1982

Hottest feels-like

44.5 °C

17 November 1985

Coldest feels-like

-4.3 °C

18 July 1975

Sunniest day

13.3 h

3 January 1945

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.7 °C2 March 2025	1.1 °C24 June 2025	22.5 °C	1,400 mm	145	0
2024	38.4 °C25 September 2024	4.8 °C13 August 2024	24.1 °C	978 mm	216	0
2023	39.1 °C26 September 2023	7.0 °C15 July 2023	23.3 °C	1,432 mm	139	0
2022	38.6 °C23 January 2022	4.9 °C13 June 2022	22.2 °C	1,461 mm	142	0
2021	39.5 °C20 September 2021	1.8 °C29 July 2021	22.8 °C	1,054 mm	170	0
2020	41.5 °C2 October 2020	4.7 °C22 August 2020	23.4 °C	961 mm	202	0
2019	39.0 °C16 September 2019	3.0 °C7 July 2019	23.6 °C	1,205 mm	155	0
2018	35.9 °C12 December 2018	5.9 °C8 June 2018	22.6 °C	1,412 mm	152	0
2017	37.5 °C18 October 2017	2.4 °C18 July 2017	23.0 °C	1,636 mm	140	0
2016	38.0 °C19 October 2016	3.5 °C12 June 2016	22.1 °C	1,566 mm	133	0
2015	37.2 °C18 September 2015	6.8 °C16 June 2015	23.3 °C	2,025 mm	141	0
2014	38.9 °C8 February 2014	7.4 °C14 August 2014	23.0 °C	1,484 mm	138	0
2013	37.2 °C5 December 2013	2.1 °C28 August 2013	22.3 °C	1,618 mm	134	0
2012	37.5 °C16 September 2012	3.8 °C8 June 2012	23.2 °C	1,133 mm	172	0
2011	37.0 °C30 September 2011	3.1 °C28 June 2011	22.2 °C	1,532 mm	132	0
2010	36.6 °C5 February 2010	4.5 °C14 July 2010	22.0 °C	1,529 mm	122	0
2009	36.7 °C3 November 2009	3.1 °C25 July 2009	22.5 °C	1,720 mm	153	0
2008	36.8 °C8 December 2008	3.9 °C17 June 2008	22.4 °C	1,511 mm	147	0
2007	37.1 °C20 September 2007	2.7 °C26 July 2007	22.9 °C	1,283 mm	184	0
2006	38.0 °C29 October 2006	3.7 °C5 September 2006	23.0 °C	1,290 mm	151	0
2005	39.0 °C12 March 2005	4.5 °C20 July 2005	23.0 °C	1,245 mm	159	0
2004	40.0 °C2 March 2004	4.4 °C13 June 2004	22.6 °C	1,403 mm	156	0
2003	37.6 °C11 November 2003	3.5 °C12 July 2003	22.6 °C	1,221 mm	140	0
2002	38.6 °C7 October 2002	3.6 °C2 September 2002	23.5 °C	1,249 mm	178	0
2001	35.1 °C28 January 2001	2.9 °C21 June 2001	22.8 °C	1,696 mm	140	0
2000	37.5 °C23 January 2000	1.5 °C17 July 2000	22.5 °C	1,664 mm	148	0
1999	37.3 °C5 December 1999	3.5 °C15 August 1999	22.4 °C	1,186 mm	156	0
1998	36.7 °C26 January 1998	7.6 °C10 July 1998	22.4 °C	2,021 mm	98	0
1997	36.5 °C26 December 1997	5.5 °C9 June 1997	22.6 °C	1,838 mm	130	0
1996	34.9 °C25 December 1996	3.9 °C30 June 1996	22.0 °C	1,912 mm	102	0
1995	35.9 °C18 September 1995	5.2 °C26 June 1995	22.6 °C	1,581 mm	133	0
1994	36.2 °C26 December 1994	2.4 °C26 June 1994	22.9 °C	1,823 mm	146	0
1993	36.7 °C4 January 1993	1.9 °C15 July 1993	22.2 °C	1,407 mm	128	0
1992	36.6 °C7 February 1992	3.1 °C20 July 1992	22.2 °C	1,720 mm	113	0
1991	37.3 °C22 January 1991	2.2 °C3 August 1991	23.0 °C	1,332 mm	151	0
1990	36.6 °C2 December 1990	2.7 °C29 July 1990	22.1 °C	1,807 mm	128	0
1989	35.8 °C25 October 1989	2.5 °C6 July 1989	21.7 °C	1,575 mm	105	0
1988	38.5 °C16 December 1988	2.5 °C5 June 1988	22.4 °C	1,187 mm	146	0
1987	36.3 °C11 October 1987	3.8 °C17 June 1987	22.2 °C	1,820 mm	132	0
1986	36.8 °C9 January 1986	5.5 °C1 June 1986	22.6 °C	1,533 mm	128	0
1985	40.7 °C17 November 1985	4.3 °C11 July 1985	22.8 °C	1,051 mm	152	0
1984	37.6 °C17 January 1984	3.1 °C26 August 1984	22.7 °C	1,498 mm	130	0
1983	34.9 °C15 December 1983	6.1 °C15 June 1983	21.9 °C	2,301 mm	113	0
1982	35.9 °C22 October 1982	6.5 °C30 July 1982	22.5 °C	1,657 mm	100	0
1981	36.0 °C28 September 1981	2.0 °C19 June 1981	22.0 °C	1,323 mm	122	0
1980	35.3 °C20 October 1980	3.0 °C27 June 1980	22.1 °C	1,762 mm	122	0
1979	37.8 °C7 February 1979	4.1 °C21 July 1979	21.9 °C	1,560 mm	108	0
1978	38.2 °C26 March 1978	4.4 °C15 August 1978	22.8 °C	1,167 mm	151	0
1977	37.5 °C12 March 1977	4.9 °C18 May 1977	23.1 °C	1,390 mm	147	0
1976	35.6 °C15 January 1976	4.3 °C10 July 1976	21.2 °C	1,510 mm	104	0
1975	35.2 °C13 February 1975	-0.2 °C18 July 1975	21.9 °C	1,162 mm	92	1
1974	35.2 °C25 November 1974	5.1 °C13 June 1974	21.5 °C	1,564 mm	91	0
1973	36.4 °C13 January 1973	5.3 °C28 June 1973	22.1 °C	1,757 mm	110	0
1972	37.9 °C27 October 1972	3.2 °C9 July 1972	22.2 °C	1,520 mm	95	0
1971	36.6 °C6 February 1971	4.3 °C14 June 1971	21.8 °C	1,321 mm	105	0
1970	37.6 °C8 December 1970	5.7 °C25 June 1970	22.2 °C	1,370 mm	107	0
1969	35.5 °C12 February 1969	4.5 °C11 July 1969	22.1 °C	1,204 mm	113	0
1968	37.4 °C25 November 1968	5.4 °C17 May 1968	21.7 °C	1,295 mm	127	0
1967	36.6 °C18 October 1967	4.0 °C9 June 1967	22.6 °C	1,489 mm	130	0
1966	35.2 °C10 December 1966	3.0 °C6 August 1966	21.9 °C	1,253 mm	92	0
1965	33.4 °C24 September 1965	3.9 °C11 July 1965	21.4 °C	1,570 mm	65	0
1964	36.1 °C13 March 1964	5.2 °C28 July 1964	21.5 °C	1,124 mm	97	0
1963	39.2 °C21 October 1963	2.7 °C6 August 1963	22.7 °C	1,246 mm	137	0
1962	36.1 °C17 September 1962	4.1 °C17 July 1962	20.9 °C	1,081 mm	77	0
1961	38.5 °C27 September 1961	4.1 °C16 June 1961	22.7 °C	1,397 mm	137	0
1960	36.3 °C10 December 1960	3.6 °C9 July 1960	21.5 °C	1,280 mm	101	0
1959	34.2 °C2 October 1959	5.9 °C10 June 1959	22.4 °C	1,398 mm	94	0
1958	36.1 °C5 January 1958	6.4 °C11 August 1958	22.2 °C	1,487 mm	93	0
1957	35.0 °C18 October 1957	4.9 °C22 July 1957	22.0 °C	1,646 mm	57	0
1956	35.3 °C7 October 1956	5.7 °C20 September 1956	21.5 °C	1,372 mm	67	0
1955	34.9 °C30 September 1955	2.1 °C31 July 1955	21.8 °C	1,660 mm	79	0
1954	33.6 °C17 September 1954	7.2 °C21 June 1954	22.2 °C	1,581 mm	73	0
1953	32.8 °C20 August 1953	7.2 °C25 July 1953	22.7 °C	1,442 mm	48	0
1952	35.4 °C16 December 1952	6.8 °C19 June 1952	22.1 °C	1,370 mm	66	0
1951	35.8 °C25 September 1951	7.7 °C9 July 1951	22.2 °C	1,497 mm	48	0
1950	34.5 °C2 September 1950	6.1 °C11 July 1950	21.9 °C	1,892 mm	43	0
1949	33.7 °C15 November 1949	5.6 °C14 May 1949	21.6 °C	2,419 mm	42	0
1948	33.9 °C23 September 1948	7.7 °C22 May 1948	22.0 °C	2,228 mm	40	0
1947	32.3 °C29 November 1947	7.3 °C7 July 1947	21.7 °C	2,237 mm	26	0
1946	32.1 °C18 October 1946	4.4 °C18 July 1946	21.8 °C	2,463 mm	23	0
1945	32.8 °C16 January 1945	5.5 °C10 July 1945	22.1 °C	1,613 mm	30	0
1944	35.4 °C13 September 1944	8.2 °C27 June 1944	23.7 °C	939 mm	145	0
1943	38.7 °C16 January 1943	7.0 °C24 August 1943	22.7 °C	624 mm	140	0
1942	41.1 °C26 November 1942	2.3 °C19 June 1942	22.3 °C	1,022 mm	148	0
1941	32.5 °C6 January 1941	4.8 °C18 July 1941	22.1 °C	2,484 mm	36	0
1940	31.6 °C9 December 1940	6.8 °C17 August 1940	22.0 °C	1,958 mm	35	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

28.1 °C

+0.6 °C

Hot days (≥ 30 °C)

145 d/yr

+28

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1400 mm

-107 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	33.0 °C	+2.3 °C	64 mm	-99 mm
Feb	33.2 °C	+2.8 °C	45 mm	-103 mm
Mar	32.2 °C	+2.3 °C	85 mm	-26 mm
Apr	26.4 °C	-1.3 °C	151 mm	+52 mm
May	26.4 °C	+2.0 °C	72 mm	-45 mm
Jun	21.7 °C	-1.1 °C	167 mm	+62 mm
Jul	23.7 °C	+0.6 °C	30 mm	-58 mm
Aug	25.0 °C	-0.3 °C	91 mm	+9 mm
Sep	28.8 °C	+1.7 °C	64 mm	-59 mm
Oct	27.7 °C	-0.8 °C	190 mm	+18 mm
Nov	29.1 °C	-0.5 °C	206 mm	+65 mm
Dec	30.3 °C	-0.1 °C	236 mm	+76 mm

The year's extremes

Hottest day

37.7 °C

2 Mar 2025

Coldest day

1.1 °C

24 Jun 2025

Wettest day

68.6 mm

12 Dec 2025

Windiest day

28.7 km/h

22 Sep 2025

Strongest gust

61.6 km/h

22 Sep 2025

Hottest feels-like

41.3 °C

17 Jan 2025

Coldest feels-like

-1.6 °C

24 Jun 2025

Sunniest day

13.2 h

5 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 Guaíra?

Guaíra has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 22.4 °C and it receives 1,507 mm of precipitation per year.

What is the hottest day ever recorded in Guaíra?

The hottest day measured in Guaíra between 1940 and 2025 was 2 October 2020, reaching 41.5 °C.

What is the coldest day in Guaíra?

The coldest day measured in Guaíra between 1940 and 2025 was 18 July 1975, at -0.2 °C.

Does it snow in Guaíra?

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

Has the climate of Guaíra warmed?

Yes: Guaíra warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Guaíra?

The wettest day measured in Guaíra between 1940 and 2025 was 17 February 2023, with 169 mm of rain in 24 hours.

What was the windiest day in Guaíra?

The windiest day measured in Guaíra between 1940 and 2025 was 15 September 1956, with winds reaching 52.0 km/h.

What is the warmest month in Guaíra?

The warmest month in Guaíra is January (26.0 °C on average); the coldest is July (17.6 °C).

How much does it rain in Guaíra?

Guaíra receives on average 1,507 mm of precipitation per year, spread over about 139 rainy days.

Is it sunny in Guaíra?

Guaíra gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.

Are there tropical nights in Guaíra?

Yes: Guaíra has on average 157 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Guaíra?

In Guaíra, between 1940 and 2025, the highest apparent temperature reached 44.5 °C on 17 November 1985, and the lowest was -4.3 °C on 18 July 1975.

Compare Guaíra with another city

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

Nearby cities

The climate around Guaíra

Other cities — Brazil

All cities in Brazil →