Posadas climate — normals and trends

Posadas (Argentina) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.2 °C and it receives 1,725 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 (26.4 °C on average) and the coldest is July (15.8 °C). Rainfall peaks in October.

Posadas averages 0 frost days, 99 hot days (≥ 30 °C) and 128 rainy days per year.

Posadas has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.1 °C (on 8 December 1985) and the coldest -1.1 °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

PosadasMisiones

coords
-27.39°, -55.92°
period
19402025 · 86 yrs
CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthOctoberDriest monthJuly

Mean daily temperature

21.2°C

Average daily high

26.2°C

Average daily low

17.1°C

Annual rainfall

1,725mm

Sunshine / day

9.3h

Mean relative humidity

76%

Average peak wind

15.7km/h

Seasonal range

10.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

99 d/yr

Rainy days (≥ 1 mm)

128 d/yr

Annual snowfall

0.0 cm

Average feels-like high

28.4 °C

Average feels-like low

17.4 °C

Average peak gust

31.9 km/h

Tropical nights (≥ 20 °C)

122 d/yr

Solar radiation

17.2 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.25 · p = < 0.001

1940Each stripe is one year, from 1940 (left) to 2025 (right). Blue = colder than the period average, red = warmer.2025

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

40.1 °C

8 December 1985

Coldest day

-1.1 °C

18 July 1975

Wettest day

216 mm

7 December 2024

Windiest day

46.6 km/h

5 June 1992

Strongest gust

100.1 km/h

5 June 1992

Hottest feels-like

44.7 °C

8 December 1979

Coldest feels-like

-5.2 °C

18 July 1975

Sunniest day

13.7 h

6 January 1955

YearHottest dayColdest dayAnnual meanRainfallHot daysFrost days
202539.1 °C3 March 20251.7 °C1 July 202521.5 °C1,551 mm1220
202438.4 °C12 February 20242.3 °C30 June 202422.2 °C1,709 mm1490
202337.5 °C8 February 20234.9 °C18 July 202322.5 °C1,884 mm1320
202240.0 °C23 January 20223.4 °C12 June 202221.3 °C1,373 mm1210
202137.4 °C29 December 20212.5 °C19 July 202121.4 °C1,233 mm1250
202038.7 °C1 October 20200.7 °C21 August 202021.8 °C1,106 mm1390
201937.9 °C9 February 20191.9 °C7 July 201922.0 °C1,481 mm1100
201837.2 °C11 December 20183.2 °C17 June 201821.8 °C1,286 mm1280
201737.8 °C16 December 20171.3 °C18 July 201722.3 °C1,755 mm1310
201637.7 °C24 January 20162.6 °C13 June 201621.1 °C1,523 mm1130
201535.3 °C16 September 20154.1 °C12 September 201522.1 °C2,109 mm1110
201438.0 °C8 February 20143.9 °C25 July 201422.0 °C2,349 mm1190
201337.0 °C1 February 20130.9 °C27 August 201321.1 °C1,447 mm1060
201237.9 °C18 February 20121.2 °C8 June 201222.2 °C1,215 mm1400
201138.9 °C21 December 20111.2 °C5 July 201121.4 °C1,504 mm1110
201038.3 °C5 February 20102.6 °C14 July 201021.0 °C1,785 mm1060
200937.3 °C2 November 20090.3 °C25 July 200921.3 °C1,402 mm1380
200838.4 °C8 December 20082.2 °C30 May 200821.2 °C1,325 mm1130
200737.0 °C30 March 20071.5 °C12 July 200721.3 °C1,552 mm1380
200637.9 °C8 January 20062.1 °C31 July 200622.0 °C1,446 mm1320
200538.0 °C20 February 20053.5 °C20 July 200521.7 °C1,545 mm1340
200436.9 °C31 January 20042.3 °C11 July 200421.3 °C1,249 mm1310
200337.4 °C9 January 20032.2 °C12 July 200321.4 °C1,758 mm1030
200236.9 °C9 January 20022.6 °C2 September 200221.7 °C2,315 mm1180
200137.4 °C20 December 20011.1 °C28 July 200121.9 °C1,792 mm1160
200036.5 °C21 January 20000.0 °C17 July 200021.0 °C1,877 mm1110
199936.9 °C30 November 19990.9 °C15 August 199921.1 °C1,819 mm1270
199836.8 °C21 January 19984.3 °C25 June 199821.1 °C2,570 mm870
199735.8 °C15 January 19973.6 °C28 June 199721.9 °C2,102 mm1280
199637.6 °C11 January 19960.3 °C29 June 199621.0 °C1,979 mm1070
199539.2 °C17 December 19952.1 °C5 August 199521.4 °C1,494 mm1120
199436.8 °C22 January 19941.1 °C10 July 199421.7 °C1,906 mm1100
199336.0 °C3 December 19932.1 °C15 July 199321.0 °C1,725 mm1120
199237.4 °C8 February 19921.5 °C23 July 199220.7 °C1,750 mm900
199137.7 °C23 November 1991-0.2 °C2 August 199121.7 °C1,560 mm1211
199036.6 °C12 March 19901.2 °C28 July 199020.8 °C2,031 mm960
198936.7 °C5 December 19891.3 °C6 July 198920.7 °C1,538 mm960
198837.5 °C6 December 19880.3 °C25 July 198820.7 °C1,493 mm1150
198737.0 °C11 October 19871.4 °C16 June 198720.8 °C2,289 mm910
198638.1 °C16 January 19864.3 °C5 September 198621.9 °C2,205 mm1110
198540.1 °C8 December 19853.0 °C11 July 198521.9 °C1,592 mm1270
198437.1 °C25 February 19842.6 °C28 June 198421.2 °C2,308 mm1040
198336.3 °C9 December 19833.1 °C15 June 198320.7 °C2,270 mm1070
198237.5 °C16 January 19823.5 °C29 June 198221.6 °C1,847 mm1090
198134.6 °C5 January 19811.6 °C18 June 198121.4 °C1,427 mm1120
198035.9 °C22 January 19800.9 °C31 July 198021.2 °C1,853 mm1100
197939.6 °C26 January 19792.2 °C15 June 197920.8 °C1,799 mm950
197837.7 °C30 January 19783.3 °C14 August 197821.5 °C1,178 mm1340
197737.4 °C23 October 19773.4 °C14 August 197722.0 °C1,490 mm1280
197636.6 °C14 December 19761.6 °C10 July 197620.2 °C1,251 mm920
197536.7 °C14 February 1975-1.1 °C18 July 197520.5 °C1,809 mm771
197435.5 °C18 November 19742.1 °C13 June 197420.5 °C1,803 mm940
197335.7 °C12 January 19733.8 °C7 September 197320.7 °C2,351 mm930
197236.6 °C1 January 19722.9 °C8 July 197221.0 °C2,444 mm830
197137.1 °C20 December 19710.6 °C12 June 197120.5 °C1,634 mm980
197038.2 °C22 January 19702.1 °C2 July 197021.2 °C1,737 mm1060
196936.3 °C7 February 19692.0 °C2 August 196920.8 °C2,010 mm930
196836.8 °C14 December 19684.4 °C17 May 196821.0 °C1,436 mm1160
196735.9 °C18 December 1967-0.2 °C14 June 196721.1 °C2,191 mm921
196635.4 °C13 December 19662.2 °C6 August 196620.5 °C1,954 mm800
196535.6 °C22 January 19652.5 °C11 July 196520.5 °C1,635 mm860
196436.9 °C26 January 19642.1 °C29 June 196420.3 °C1,076 mm1040
196338.0 °C2 January 19631.8 °C6 August 196321.5 °C1,632 mm1150
196237.8 °C24 December 19621.6 °C17 July 196219.9 °C1,174 mm940
196136.4 °C31 January 19610.9 °C16 June 196121.6 °C1,754 mm1050
196037.3 °C24 December 19601.6 °C9 July 196020.7 °C1,334 mm1040
195933.6 °C8 September 19595.7 °C15 August 195921.0 °C2,224 mm710
195837.8 °C11 February 19584.7 °C11 August 195821.0 °C1,717 mm760
195735.0 °C17 October 19572.8 °C21 July 195720.9 °C1,591 mm590
195632.9 °C5 February 19564.1 °C11 May 195619.9 °C1,490 mm340
195533.9 °C9 February 19551.2 °C31 July 195520.4 °C1,761 mm640
195433.7 °C11 December 19545.7 °C8 August 195420.8 °C1,905 mm510
195335.7 °C5 January 19534.1 °C20 July 195321.6 °C2,062 mm580
195236.3 °C11 December 19525.0 °C19 June 195221.1 °C1,392 mm720
195131.6 °C5 September 19515.9 °C29 June 195120.9 °C1,904 mm350
195032.0 °C16 February 19503.4 °C11 July 195020.6 °C1,664 mm330
194934.3 °C27 December 19494.2 °C14 May 194920.6 °C1,621 mm590
194832.6 °C23 September 19484.7 °C9 August 194820.8 °C2,649 mm220
194733.0 °C29 November 19472.8 °C11 July 194720.7 °C1,878 mm330
194632.1 °C15 November 19462.8 °C21 July 194620.6 °C2,285 mm330
194536.2 °C15 January 19452.4 °C9 July 194521.5 °C1,459 mm650
194435.7 °C6 February 19442.4 °C27 June 194422.3 °C1,369 mm900
194338.5 °C17 January 19435.1 °C29 August 194321.8 °C842 mm960
194238.4 °C25 November 19421.6 °C19 June 194221.0 °C1,270 mm1090
194133.7 °C17 February 19413.6 °C26 June 194121.0 °C2,175 mm570
194033.9 °C8 March 19405.0 °C9 August 194020.9 °C2,034 mm650

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?

Across the whole year

Average daily high
26.7 °C
+0.5 °C
Hot days (≥ 30 °C)
122 d/yr
+23
Frost days (< 0 °C)
0 d/yr
0
Annual rainfall
1551 mm
-174 mm

Month by month

Highvs. normalPrecipitationvs. normal
Jan32.9 °C+1.6 °C38 mm-117 mm
Feb35.0 °C+4.4 °C42 mm-92 mm
Mar32.0 °C+2.6 °C75 mm-50 mm
Apr25.7 °C-0.5 °C66 mm-81 mm
May24.3 °C+1.6 °C175 mm+29 mm
Jun17.8 °C-2.8 °C237 mm+99 mm
Jul21.5 °C+0.8 °C49 mm-57 mm
Aug22.1 °C-0.4 °C106 mm-5 mm
Sep24.6 °C+0.4 °C177 mm+16 mm
Oct26.2 °C-0.3 °C246 mm+46 mm
Nov29.0 °C+0.4 °C88 mm-65 mm
Dec30.2 °C-0.4 °C251 mm+104 mm

The year's extremes

Hottest day
39.1 °C
3 Mar 2025
Coldest day
1.7 °C
1 Jul 2025
Wettest day
69.6 mm
9 May 2025
Windiest day
33.1 km/h
22 Sep 2025
Strongest gust
71.6 km/h
14 Jun 2025
Hottest feels-like
43.5 °C
4 Feb 2025
Coldest feels-like
-2.5 °C
2 Jul 2025
Sunniest day
13.6 h
8 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 Posadas?

Posadas has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.2 °C and it receives 1,725 mm of precipitation per year.

What is the hottest day ever recorded in Posadas?

The hottest day measured in Posadas between 1940 and 2025 was 8 December 1985, reaching 40.1 °C.

What is the coldest day in Posadas?

The coldest day measured in Posadas between 1940 and 2025 was 18 July 1975, at -1.1 °C.

Does it snow in Posadas?

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

Has the climate of Posadas warmed?

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

What is the wettest day in Posadas?

The wettest day measured in Posadas between 1940 and 2025 was 7 December 2024, with 216 mm of rain in 24 hours.

What was the windiest day in Posadas?

The windiest day measured in Posadas between 1940 and 2025 was 5 June 1992, with winds reaching 46.6 km/h.

What is the warmest month in Posadas?

The warmest month in Posadas is January (26.4 °C on average); the coldest is July (15.8 °C).

How much does it rain in Posadas?

Posadas receives on average 1,725 mm of precipitation per year, spread over about 128 rainy days.

Is it sunny in Posadas?

Posadas gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.

Are there tropical nights in Posadas?

Yes: Posadas has on average 122 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Posadas?

In Posadas, between 1940 and 2025, the highest apparent temperature reached 44.7 °C on 8 December 1979, and the lowest was -5.2 °C on 18 July 1975.

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