Posadas climate
Posadas (Argentina) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 21 °C71 °F, and about 1,771 mm70 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Posadas climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 3290 | 2271 | 2781 | 1566.1 | 0 |
| Feb | 3290 | 2171 | 2780 | 1254.9 | 0 |
| Mar | 3187 | 2067 | 2577 | 1495.9 | 0 |
| Apr | 2781 | 1762 | 2272 | 1867.3 | 0 |
| May | 2272 | 1355 | 1864 | 1475.8 | 0 |
| Jun | 2169 | 1253 | 1661 | 1124.4 | 0 |
| Jul | 2068 | 1050 | 1559 | 923.6 | 1 |
| Aug | 2272 | 1253 | 1762 | 903.5 | 0 |
| Sep | 2576 | 1456 | 1966 | 1214.8 | 0 |
| Oct | 2781 | 1762 | 2272 | 2158.5 | 0 |
| Nov | 2984 | 1865 | 2475 | 1917.5 | 0 |
| Dec | 3289 | 2169 | 2679 | 1887.4 | 0 |
| Year | 3290 | 1050 | 2171 | 1,77170 | 1 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 73% | 61% | 6.6 | 13:41 |
| Feb | 72% | 59% | 6.1 | 13:04 |
| Mar | 73% | 53% | 5.3 | 12:19 |
| Apr | 79% | 51% | 4.3 | 11:28 |
| May | 83% | 55% | 3.1 | 10:47 |
| Jun | 85% | 59% | 2.7 | 10:25 |
| Jul | 84% | 54% | 3.0 | 10:34 |
| Aug | 81% | 52% | 3.7 | 11:09 |
| Sep | 78% | 54% | 4.4 | 11:58 |
| Oct | 79% | 60% | 5.3 | 12:48 |
| Nov | 75% | 55% | 6.4 | 13:31 |
| Dec | 72% | 60% | 6.7 | 13:52 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Posadas is like
The warmest month is January, with an average high of 32 °C90 °F and a low of 22 °C71 °F. The coldest is July, when highs average 20 °C68 °F and lows 10 °C50 °F. There is a clear seasonal cycle, with 11.9 °C21.4 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,771 mm70 in of precipitation per year. The wettest three-month stretch is October–December, which brings 34% of the annual total. The wettest month is October (215 mm8.5 in), the driest is August (90 mm3.5 in).
Relative humidity ranges from 72% in February to 85% in June. The clearest skies (lowest average cloud amount, 51%) are typical of April. Average wind speed near the ground ranges from 0 km/h (0 mph) in January to 0 km/h (0 mph) in April. Daylight lasts from about 10.4 hours in June to 13.9 hours in December.
Best time to visit Posadas
Based on these averages, the most comfortable months for sightseeing and outdoor activities are July and August: average highs of 20 °C68 °F to 22 °C72 °F with 90 mm3.5 in to 92 mm3.6 in of precipitation per month.
The most challenging month is December, which is hot, with average highs of 32 °C89 °F and very wet (188 mm7.4 in).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Posadas
- Summer (December–February) — highs around 32 °C89 °F, lows 2169 to 22 °C71 °F, about 156 mm6.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Autumn (March–May) — highs 2272 to 31 °C87 °F, lows 1355 to 20 °C67 °F, about 161 mm6.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Winter (June–August) — highs 2068 to 22 °C72 °F, lows 1050 to 12 °C53 °F, about 98 mm3.9 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
- Spring (September–November) — highs 2576 to 29 °C84 °F, lows 1456 to 18 °C65 °F, about 176 mm6.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
How Posadas compares
Compared with Corrientes, about 287 km to the west, Posadas has practically the same average temperature and receives 28% more precipitation (1,771 mm70 in vs 1,384 mm55 in). The difference is largest in October (0.9 °C1.6 °F cooler).
Of the 31 places in Argentina covered by World Climates, Posadas is the 6th warmest by annual mean temperature and the wettest by annual precipitation. See all of them on the Argentina climate page.
Places in other countries with the most similar temperature and rainfall pattern: Toledo (Brazil, Cfa), Blumenau (Brazil, Cfa) and Brusque (Brazil, Cfa).
Nearby places
- Ituzaingó 78 km · 22 °C71 °F · 1,586 mm62 in
- Ciudad del Este 245 km · 23 °C74 °F · 1,611 mm63 in
- Formosa 260 km · 23 °C73 °F · 1,400 mm55 in
- Uruguaiana 286 km · 20 °C67 °F · 1,414 mm56 in
- Corrientes 287 km · 22 °C71 °F · 1,384 mm55 in
- Asunción 290 km · 23 °C73 °F · 1,474 mm58 in
- Francisco Beltrão 320 km · 20 °C67 °F · 1,699 mm67 in
- Santa Maria 328 km · 19 °C67 °F · 1,692 mm67 in
Frequently asked questions
What is the warmest month in Posadas?
January is the warmest month in Posadas, with an average high of 32 °C (90 °F) and an average low of 22 °C (71 °F).
What is the coldest month in Posadas?
July is the coldest month, with an average high of 20 °C (68 °F) and an average low of 10 °C (50 °F).
When does it rain the most in Posadas?
October is the wettest month with about 215 mm (8.5 in) of precipitation; August is the driest with about 90 mm (3.5 in).
What is the best time to visit Posadas?
Judging by long-term averages, the most comfortable months are July and August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 156 m, while Posadas lies at about 83 m. Temperatures on this page were therefore adjusted by +0.5 °C0.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.