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
- 1940–2025 · 86 yrs
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
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
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
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 32.9 °C | +1.6 °C | 38 mm | -117 mm |
| Feb | 35.0 °C | +4.4 °C | 42 mm | -92 mm |
| Mar | 32.0 °C | +2.6 °C | 75 mm | -50 mm |
| Apr | 25.7 °C | -0.5 °C | 66 mm | -81 mm |
| May | 24.3 °C | +1.6 °C | 175 mm | +29 mm |
| Jun | 17.8 °C | -2.8 °C | 237 mm | +99 mm |
| Jul | 21.5 °C | +0.8 °C | 49 mm | -57 mm |
| Aug | 22.1 °C | -0.4 °C | 106 mm | -5 mm |
| Sep | 24.6 °C | +0.4 °C | 177 mm | +16 mm |
| Oct | 26.2 °C | -0.3 °C | 246 mm | +46 mm |
| Nov | 29.0 °C | +0.4 °C | 88 mm | -65 mm |
| Dec | 30.2 °C | -0.4 °C | 251 mm | +104 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
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.
Compare Posadas with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Posadas