Asunción climate — normals and trends

Q: What is the climate of Asunción?

Asunción has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 22.7 °C and it receives 1,616 mm of precipitation per year.

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

The hottest day measured in Asunción between 1940 and 2025 was 1 October 2020, reaching 43.0 °C.

Q: What is the coldest day in Asunción?

The coldest day measured in Asunción between 1940 and 2025 was 27 June 2011, at -1.0 °C.

Q: Does it snow in Asunción?

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

Q: Has the climate of Asunción warmed?

Yes: Asunción warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Asunción?

The wettest day measured in Asunción between 1940 and 2025 was 18 February 1962, with 180 mm of rain in 24 hours.

Q: What was the windiest day in Asunción?

The windiest day measured in Asunción between 1940 and 2025 was 5 October 1942, with winds reaching 51.8 km/h.

Q: What is the warmest month in Asunción?

The warmest month in Asunción is January (27.5 °C on average); the coldest is July (17.5 °C).

Q: How much does it rain in Asunción?

Asunción receives on average 1,616 mm of precipitation per year, spread over about 128 rainy days.

Q: Is it sunny in Asunción?

Asunción gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

Asunción (Paraguay) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 22.7 °C and it receives 1,616 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 (27.5 °C on average) and the coldest is July (17.5 °C). Rainfall peaks in October.

Asunción averages 0 frost days, 145 hot days (≥ 30 °C) and 128 rainy days per year.

Asunción has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 43.0 °C (on 1 October 2020) and the coldest -1.0 °C (on 27 June 2011).

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

AsunciónAsuncion

coords: -25.29°, -57.65°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthOctoberDriest monthJuly

Mean daily temperature

22.7°C

Average daily high

27.8°C

Average daily low

18.4°C

Annual rainfall

1,616mm

Sunshine / day

9.4h

Mean relative humidity

74%

Average peak wind

17.7km/h

Seasonal range

10.0°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

145 d/yr

Rainy days (≥ 1 mm)

128 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.1 °C

Average feels-like low

18.9 °C

Average peak gust

34.4 km/h

Tropical nights (≥ 20 °C)

167 d/yr

Solar radiation

17.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.19 · 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

43.0 °C

1 October 2020

Coldest day

-1.0 °C

27 June 2011

Wettest day

180 mm

18 February 1962

Windiest day

51.8 km/h

5 October 1942

Strongest gust

90.7 km/h

30 August 1992

Hottest feels-like

47.1 °C

24 January 2022

Coldest feels-like

-4.8 °C

2 August 1991

Sunniest day

13.6 h

18 December 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	40.5 °C18 January 2025	1.4 °C24 June 2025	23.1 °C	1,299 mm	163	0
2024	40.9 °C14 March 2024	2.9 °C10 July 2024	24.2 °C	1,099 mm	228	0
2023	41.2 °C16 October 2023	5.2 °C19 July 2023	24.2 °C	1,528 mm	188	0
2022	41.5 °C24 January 2022	2.0 °C12 June 2022	22.8 °C	1,163 mm	168	0
2021	39.4 °C7 September 2021	0.7 °C29 June 2021	23.0 °C	1,150 mm	180	0
2020	43.0 °C1 October 2020	2.0 °C22 August 2020	23.8 °C	950 mm	217	0
2019	40.8 °C30 October 2019	2.4 °C7 July 2019	23.6 °C	1,218 mm	166	0
2018	37.2 °C11 December 2018	3.0 °C17 June 2018	22.9 °C	1,418 mm	172	0
2017	38.5 °C18 October 2017	0.0 °C18 July 2017	23.6 °C	1,512 mm	174	0
2016	37.2 °C17 October 2016	0.9 °C12 June 2016	22.4 °C	1,470 mm	153	0
2015	38.9 °C21 September 2015	6.6 °C19 June 2015	23.7 °C	1,882 mm	162	0
2014	40.4 °C16 October 2014	4.6 °C25 July 2014	23.8 °C	1,766 mm	168	0
2013	39.3 °C24 January 2013	0.7 °C24 July 2013	22.7 °C	1,298 mm	152	0
2012	39.4 °C2 October 2012	0.9 °C8 June 2012	23.7 °C	1,116 mm	180	0
2011	39.4 °C22 December 2011	-1.0 °C27 June 2011	22.8 °C	1,345 mm	166	1
2010	39.2 °C5 February 2010	1.5 °C5 August 2010	22.4 °C	1,390 mm	156	0
2009	38.6 °C4 March 2009	1.7 °C25 July 2009	22.9 °C	1,431 mm	190	0
2008	39.3 °C8 December 2008	3.0 °C30 May 2008	23.0 °C	1,165 mm	174	0
2007	38.2 °C5 September 2007	2.5 °C26 July 2007	22.8 °C	1,359 mm	190	0
2006	38.4 °C15 January 2006	3.5 °C5 September 2006	23.6 °C	1,394 mm	183	0
2005	39.3 °C21 February 2005	3.1 °C19 July 2005	22.8 °C	1,356 mm	167	0
2004	38.8 °C2 March 2004	3.1 °C13 June 2004	22.5 °C	1,343 mm	156	0
2003	39.8 °C23 September 2003	3.1 °C12 July 2003	23.0 °C	1,531 mm	166	0
2002	39.8 °C7 October 2002	3.7 °C2 September 2002	23.3 °C	1,561 mm	180	0
2001	36.9 °C28 October 2001	0.0 °C28 July 2001	23.1 °C	1,674 mm	165	0
2000	39.0 °C11 January 2000	-0.4 °C13 July 2000	22.8 °C	1,615 mm	170	2
1999	41.4 °C15 October 1999	1.3 °C15 August 1999	22.8 °C	1,522 mm	177	0
1998	38.6 °C26 January 1998	4.4 °C10 July 1998	22.4 °C	2,497 mm	132	0
1997	36.9 °C8 January 1997	4.6 °C1 July 1997	23.4 °C	2,014 mm	178	0
1996	38.8 °C11 January 1996	0.8 °C29 June 1996	22.2 °C	2,386 mm	129	0
1995	38.8 °C17 December 1995	4.1 °C26 June 1995	22.7 °C	1,422 mm	164	0
1994	38.8 °C22 September 1994	1.1 °C9 July 1994	23.3 °C	1,741 mm	166	0
1993	37.6 °C14 March 1993	0.9 °C31 July 1993	22.5 °C	1,685 mm	169	0
1992	38.4 °C8 February 1992	1.3 °C19 July 1992	22.0 °C	1,833 mm	115	0
1991	39.4 °C21 January 1991	0.9 °C2 August 1991	23.0 °C	1,611 mm	146	0
1990	40.2 °C14 March 1990	2.2 °C29 July 1990	22.4 °C	2,093 mm	145	0
1989	36.8 °C5 December 1989	1.4 °C6 July 1989	22.0 °C	1,750 mm	128	0
1988	38.5 °C11 November 1988	0.5 °C24 July 1988	22.3 °C	1,314 mm	161	0
1987	40.1 °C11 October 1987	2.1 °C17 June 1987	22.4 °C	1,880 mm	151	0
1986	37.9 °C8 January 1986	2.9 °C5 September 1986	23.1 °C	2,178 mm	148	0
1985	40.0 °C17 November 1985	3.3 °C12 July 1985	22.9 °C	1,609 mm	153	0
1984	37.9 °C25 February 1984	2.7 °C26 August 1984	22.7 °C	1,628 mm	153	0
1983	36.4 °C15 December 1983	4.3 °C4 June 1983	21.9 °C	1,953 mm	138	0
1982	37.2 °C16 January 1982	5.1 °C29 June 1982	22.7 °C	1,830 mm	119	0
1981	36.4 °C30 October 1981	0.7 °C19 June 1981	22.5 °C	1,371 mm	148	0
1980	36.5 °C22 January 1980	2.5 °C3 July 1980	22.4 °C	1,890 mm	140	0
1979	38.1 °C27 January 1979	2.2 °C21 July 1979	22.3 °C	1,844 mm	129	0
1978	39.6 °C29 January 1978	4.1 °C14 August 1978	23.1 °C	1,082 mm	169	0
1977	37.6 °C12 March 1977	4.6 °C17 July 1977	23.4 °C	1,260 mm	161	0
1976	36.4 °C11 March 1976	2.4 °C10 July 1976	21.7 °C	1,138 mm	135	0
1975	38.3 °C13 February 1975	0.5 °C18 July 1975	22.1 °C	1,515 mm	123	0
1974	37.4 °C25 November 1974	3.7 °C19 August 1974	22.0 °C	1,310 mm	139	0
1973	37.3 °C13 January 1973	6.2 °C28 June 1973	22.3 °C	1,778 mm	129	0
1972	38.4 °C24 March 1972	2.5 °C9 July 1972	22.9 °C	1,624 mm	151	0
1971	37.9 °C8 February 1971	2.7 °C12 June 1971	21.7 °C	1,756 mm	120	0
1970	39.2 °C8 December 1970	2.3 °C2 July 1970	22.7 °C	1,800 mm	162	0
1969	38.2 °C11 February 1969	3.2 °C9 July 1969	22.7 °C	1,566 mm	152	0
1968	39.1 °C14 December 1968	4.0 °C17 May 1968	22.6 °C	1,586 mm	149	0
1967	36.8 °C17 October 1967	2.5 °C14 June 1967	22.7 °C	1,984 mm	157	0
1966	37.2 °C13 December 1966	3.2 °C5 August 1966	22.5 °C	1,487 mm	132	0
1965	36.2 °C23 January 1965	0.4 °C11 July 1965	21.9 °C	1,789 mm	111	0
1964	38.2 °C7 February 1964	2.3 °C30 June 1964	22.0 °C	1,069 mm	145	0
1963	38.6 °C27 November 1963	2.3 °C18 June 1963	23.2 °C	1,502 mm	162	0
1962	39.0 °C24 December 1962	-0.1 °C17 July 1962	21.2 °C	1,397 mm	127	1
1961	38.8 °C21 January 1961	1.3 °C16 June 1961	23.1 °C	1,635 mm	162	0
1960	37.0 °C9 December 1960	1.2 °C9 July 1960	22.1 °C	1,209 mm	151	0
1959	35.8 °C8 September 1959	6.8 °C11 June 1959	22.5 °C	2,123 mm	138	0
1958	39.2 °C12 February 1958	4.6 °C10 August 1958	22.6 °C	1,717 mm	125	0
1957	36.6 °C18 October 1957	3.2 °C21 July 1957	22.4 °C	1,601 mm	117	0
1956	33.9 °C28 December 1956	3.7 °C20 September 1956	21.5 °C	1,651 mm	74	0
1955	35.6 °C19 February 1955	0.5 °C31 July 1955	21.9 °C	1,508 mm	104	0
1954	35.5 °C1 December 1954	6.7 °C6 August 1954	22.2 °C	1,936 mm	101	0
1953	36.8 °C6 January 1953	5.9 °C20 July 1953	23.1 °C	2,275 mm	102	0
1952	37.4 °C10 December 1952	6.0 °C10 June 1952	22.6 °C	1,412 mm	113	0
1951	35.8 °C25 September 1951	5.2 °C29 June 1951	22.6 °C	2,276 mm	88	0
1950	35.4 °C2 September 1950	5.3 °C11 July 1950	22.1 °C	1,908 mm	66	0
1949	35.9 °C14 November 1949	5.0 °C19 July 1949	22.0 °C	2,090 mm	95	0
1948	35.0 °C23 September 1948	6.4 °C8 August 1948	22.4 °C	2,352 mm	70	0
1947	33.4 °C29 November 1947	5.2 °C11 July 1947	22.1 °C	2,037 mm	69	0
1946	35.4 °C2 January 1946	3.9 °C18 July 1946	22.0 °C	2,516 mm	60	0
1945	38.2 °C10 January 1945	2.8 °C11 July 1945	23.1 °C	1,591 mm	111	0
1944	38.1 °C10 January 1944	3.6 °C27 June 1944	24.2 °C	1,232 mm	162	0
1943	40.7 °C16 January 1943	5.4 °C24 August 1943	23.8 °C	745 mm	160	0
1942	41.3 °C25 November 1942	2.6 °C19 June 1942	23.0 °C	1,226 mm	170	0
1941	33.9 °C11 December 1941	5.1 °C26 June 1941	22.5 °C	2,024 mm	98	0
1940	32.8 °C25 December 1940	6.4 °C28 August 1940	22.1 °C	2,180 mm	85	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

28.8 °C

+1.0 °C

Hot days (≥ 30 °C)

163 d/yr

+18

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1299 mm

-317 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	36.0 °C	+3.5 °C	24 mm	-128 mm
Feb	36.5 °C	+4.7 °C	89 mm	-60 mm
Mar	32.9 °C	+2.2 °C	96 mm	-36 mm
Apr	26.6 °C	-1.1 °C	119 mm	-31 mm
May	26.7 °C	+2.4 °C	116 mm	-12 mm
Jun	20.2 °C	-2.2 °C	180 mm	+74 mm
Jul	24.4 °C	+1.6 °C	56 mm	-16 mm
Aug	25.1 °C	+0.4 °C	53 mm	-28 mm
Sep	27.7 °C	+1.2 °C	130 mm	+5 mm
Oct	28.4 °C	-0.1 °C	77 mm	-108 mm
Nov	30.5 °C	+0.4 °C	163 mm	-14 mm
Dec	31.5 °C	-0.2 °C	198 mm	+37 mm

The year's extremes

Hottest day

40.5 °C

18 Jan 2025

Coldest day

1.4 °C

24 Jun 2025

Wettest day

54.6 mm

18 Feb 2025

Windiest day

38.3 km/h

22 Sep 2025

Strongest gust

78.5 km/h

7 Nov 2025

Hottest feels-like

46.0 °C

18 Jan 2025

Coldest feels-like

-1.7 °C

24 Jun 2025

Sunniest day

13.6 h

17 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 Asunción?

Asunción has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 22.7 °C and it receives 1,616 mm of precipitation per year.

What is the hottest day ever recorded in Asunción?

The hottest day measured in Asunción between 1940 and 2025 was 1 October 2020, reaching 43.0 °C.

What is the coldest day in Asunción?

The coldest day measured in Asunción between 1940 and 2025 was 27 June 2011, at -1.0 °C.

Does it snow in Asunción?

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

Has the climate of Asunción warmed?

Yes: Asunción warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Asunción?

The wettest day measured in Asunción between 1940 and 2025 was 18 February 1962, with 180 mm of rain in 24 hours.

What was the windiest day in Asunción?

The windiest day measured in Asunción between 1940 and 2025 was 5 October 1942, with winds reaching 51.8 km/h.

What is the warmest month in Asunción?

The warmest month in Asunción is January (27.5 °C on average); the coldest is July (17.5 °C).

How much does it rain in Asunción?

Asunción receives on average 1,616 mm of precipitation per year, spread over about 128 rainy days.

Is it sunny in Asunción?

Asunción gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

Are there tropical nights in Asunción?

Yes: Asunción has on average 167 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Asunción?

In Asunción, between 1940 and 2025, the highest apparent temperature reached 47.1 °C on 24 January 2022, and the lowest was -4.8 °C on 2 August 1991.

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