Asunción climate

Name: Asunción
Address: PY

Asunción is warmest in January, with average highs of 32 °C, and coldest in July, when nights average 14 °C. November is the wettest month (195 mm) and August the driest (63 mm). Figures are 1991–2020 climate normals.

Across a full year Asunción averages 1,577 mm of rain and 259 days above 25 °C.

Paraguay · population 1,482,200 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month January 32 °C
Coldest month July 14 °C
Driest month August 63 mm
Wettest month November 195 mm
Least cloud August 40 % cloud
Hottest on record October 42 °C
Coldest on record July 1.0 °C

What to expectAsunción through the year

Asunción has a clear annual cycle: average daily highs run from 22 °C in July to 32 °C in January, a swing of 11 °C in mean temperature across the year.

Counted across a normal year, 259 days a year reach 25 °C, 134 of them reach 30 °C. The warmest reading in the 1991–2020 record is 42 °C, in October.

Rain is strongly seasonal. November averages 195 mm against 63 mm in August — 3.1 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	32.2 °C	123 mm	51 %
February	31.3 °C	142 mm	52 %
March	30.3 °C	124 mm	47 %
April	27.6 °C	155 mm	47 %
May	23.5 °C	136 mm	52 %
June	22.1 °C	100 mm	54 %
July	21.8 °C	75 mm	46 %
August	24.6 °C	63 mm	40 %
September	26.7 °C	105 mm	43 %
October	28.6 °C	192 mm	53 %
November	29.6 °C	195 mm	49 %
December	31.2 °C	165 mm	52 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	32.2 °C	23.8 °C	27.7 °C	38.2 °C	15.9 °C	31	25
February	31.3 °C	23.3 °C	27.0 °C	38.1 °C	14.5 °C	28	19
March	30.3 °C	22.1 °C	25.9 °C	38.5 °C	10.9 °C	29	17
April	27.6 °C	19.6 °C	23.2 °C	36.2 °C	7.0 °C	22	9
May	23.5 °C	16.1 °C	19.4 °C	33.2 °C	4.0 °C	12	2
June	22.1 °C	14.8 °C	18.0 °C	30.3 °C	1.5 °C	10	0
July	21.8 °C	13.5 °C	17.1 °C	32.4 °C	1.0 °C	11	0
August	24.6 °C	15.1 °C	19.2 °C	36.1 °C	1.1 °C	16	6
September	26.7 °C	16.9 °C	21.2 °C	39.9 °C	4.3 °C	18	9
October	28.6 °C	19.7 °C	23.7 °C	41.7 °C	8.7 °C	25	11
November	29.6 °C	20.5 °C	24.8 °C	40.0 °C	9.4 °C	28	13
December	31.2 °C	22.7 °C	26.7 °C	38.8 °C	12.1 °C	31	21

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	123 mm	12	14 h/day	51 %	71 %	17 km/h
February	142 mm	12	13 h/day	52 %	73 %	16 km/h
March	124 mm	11	12 h/day	47 %	73 %	16 km/h
April	155 mm	9	12 h/day	47 %	75 %	17 km/h
May	136 mm	9	11 h/day	52 %	78 %	17 km/h
June	100 mm	8	11 h/day	54 %	78 %	18 km/h
July	75 mm	7	11 h/day	46 %	75 %	19 km/h
August	63 mm	6	11 h/day	40 %	68 %	20 km/h
September	105 mm	9	12 h/day	43 %	67 %	20 km/h
October	192 mm	11	13 h/day	53 %	72 %	20 km/h
November	195 mm	11	13 h/day	49 %	71 %	19 km/h
December	165 mm	13	14 h/day	52 %	72 %	18 km/h

How Asunción compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Asunción	32 °C	14 °C	1,577 mm	259
San Lorenzo · Paraguay	32 °C	14 °C	1,599 mm	259
Formosa · Argentina	32 °C	13 °C	1,569 mm	248
Corrientes · Argentina	31 °C	12 °C	1,523 mm	219
Ituzaingó · Argentina	31 °C	12 °C	1,684 mm	221
Resistencia · Argentina	32 °C	12 °C	1,470 mm	221
Posadas · Argentina	31 °C	12 °C	1,721 mm	222

Where Asunción ranks

Ranking	Position	Value
The warmest places in South America in January	12thof 50	32 °C
The warmest places in South America in December	23rdof 50	31 °C
The warmest places in South America in February	31stof 50	31 °C
The warmest places in South America in March	44thof 50	30 °C

Planning a trip? See the best time to visit Asunción.

QuestionsCommon questions about Asunción’s climate

When is the best time to visit Asunción?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, August, September sit closest to 20 °C on average, January is the warmest month and August the driest. The month-by-month table above has the full picture.

How hot does Asunción get?

In January, the warmest month, daily highs average 32 °C. About 134 days a year pass 30 °C. The highest value in the 1991–2020 record is 42 °C.

How cold does it get in winter?

Nights average 14 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Asunción?

November, averaging 195 mm over 11 days with rain. The driest month is August with 63 mm. The year as a whole averages 1,577 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Asunción rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.