Formosa climate
Formosa (Argentina) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 23 °C73 °F, and about 1,400 mm55 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Formosa climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3494 | 2373 | 2883 | 1355.3 |
| Feb | 3493 | 2272 | 2882 | 1275.0 |
| Mar | 3290 | 2069 | 2680 | 1485.8 |
| Apr | 2984 | 1763 | 2374 | 1606.3 |
| May | 2475 | 1355 | 1865 | 1164.6 |
| Jun | 2272 | 1152 | 1762 | 652.6 |
| Jul | 2271 | 1050 | 1660 | 552.2 |
| Aug | 2576 | 1152 | 1864 | 351.4 |
| Sep | 2882 | 1456 | 2169 | 652.6 |
| Oct | 3188 | 1864 | 2476 | 1435.6 |
| Nov | 3290 | 1966 | 2578 | 1756.9 |
| Dec | 3392 | 2170 | 2781 | 1787.0 |
| Year | 3494 | 1050 | 2373 | 1,40055 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 67% | 59% | 6.8 | 13:36 |
| Feb | 67% | 60% | 6.2 | 13:01 |
| Mar | 68% | 53% | 5.3 | 12:19 |
| Apr | 75% | 53% | 4.2 | 11:30 |
| May | 80% | 53% | 3.3 | 10:51 |
| Jun | 82% | 58% | 2.7 | 10:30 |
| Jul | 78% | 51% | 3.1 | 10:39 |
| Aug | 72% | 47% | 3.9 | 11:12 |
| Sep | 66% | 56% | 4.6 | 11:59 |
| Oct | 68% | 61% | 5.5 | 12:46 |
| Nov | 68% | 55% | 6.5 | 13:27 |
| Dec | 68% | 60% | 6.8 | 13:46 |
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 Formosa is like
The warmest month is January, with an average high of 34 °C94 °F and a low of 23 °C73 °F. The coldest is July, when highs average 22 °C71 °F and lows 10 °C50 °F. There is a clear seasonal cycle, with 12.6 °C22.7 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,400 mm55 in of precipitation per year. The wettest three-month stretch is October–December, which brings 35% of the annual total. The wettest month is December (178 mm7.0 in), the driest is August (35 mm1.4 in).
Relative humidity ranges from 66% in September to 82% in June. The clearest skies (lowest average cloud amount, 47%) are typical of August. Average wind speed near the ground ranges from 8 km/h (5 mph) in March to 11 km/h (7 mph) in October. Daylight lasts from about 10.5 hours in June to 13.8 hours in December.
Best time to visit Formosa
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–September: average highs of 22 °C71 °F to 28 °C82 °F with 35 mm1.4 in to 65 mm2.6 in of precipitation per month.
The most challenging month is December, which is hot, with average highs of 33 °C92 °F and very wet (178 mm7.0 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 Formosa
- Summer (December–February) — highs 3392 to 34 °C94 °F, lows 2170 to 23 °C73 °F, about 146 mm5.8 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 2475 to 32 °C90 °F, lows 1355 to 20 °C69 °F, about 141 mm5.6 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 2271 to 25 °C76 °F, lows 1050 to 11 °C52 °F, about 51 mm2.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Spring (September–November) — highs 2882 to 32 °C90 °F, lows 1456 to 19 °C66 °F, about 128 mm5.0 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
How Formosa compares
Compared with Asunción, about 113 km to the northeast, Formosa has practically the same average temperature and receives a similar amount of precipitation.
Of the 31 places in Argentina covered by World Climates, Formosa is the warmest by annual mean temperature and the 4th 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 (seasons shifted for the other hemisphere where needed): Asunción (Paraguay, Cfa), Ciudad del Este (Paraguay, Cfa) and Beiliu (China, Cfa).
Nearby places
- Asunción 113 km · 23 °C73 °F · 1,474 mm58 in
- Corrientes 157 km · 22 °C71 °F · 1,384 mm55 in
- Ituzaingó 214 km · 22 °C71 °F · 1,586 mm62 in
- Posadas 260 km · 21 °C71 °F · 1,771 mm70 in
- Ciudad del Este 361 km · 23 °C74 °F · 1,611 mm63 in
- Uruguaiana 411 km · 20 °C67 °F · 1,414 mm56 in
- Toledo 474 km · 21 °C70 °F · 1,530 mm60 in
- Cascavel 493 km · 19 °C66 °F · 1,585 mm62 in
Frequently asked questions
What is the warmest month in Formosa?
January is the warmest month in Formosa, with an average high of 34 °C (94 °F) and an average low of 23 °C (73 °F).
What is the coldest month in Formosa?
July is the coldest month, with an average high of 22 °C (71 °F) and an average low of 10 °C (50 °F).
When does it rain the most in Formosa?
December is the wettest month with about 178 mm (7.0 in) of precipitation; August is the driest with about 35 mm (1.4 in).
What is the best time to visit Formosa?
Judging by long-term averages, the most comfortable months are June–September.
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.