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Monthly climate in Formosa, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Formosa features a humid subtropical climate (Cfa). Temperatures typically range between 17 °C (62 °F) and 28 °C (83 °F) through the year, but rarely can drop to -1 °C (31 °F) or can rise to as high as 43 °C (110 °F). The average annual precipitation amounts to about 1285 mm (50.6 inches) and receives 98 rainy days on the 1 mm (0.04 inches) threshold annually. Formosa enjoys an average of 3416 hours of sunshine throughout the year, and daylight varies from 10 hours 30 minutes to 13 hours 44 minutes per day.

Monthly average temperatures in Formosa, Argentina

The warmest months in Formosa are January, February and December, with daily mean temperatures ranging from 27 to 28 °C (81 - 83 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 17 to 19 °C (62 - 66 °F) throughout the day. On average each year, Formosa experiences 242 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Formosa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum41°C
(107°F)		40°C
(105°F)		40°C
(104°F)		35°C
(95°F)		35°C
(95°F)		33°C
(91°F)		33°C
(93°F)		39°C
(102°F)		41°C
(105°F)		43°C
(110°F)		40°C
(104°F)		40°C
(104°F)
Mean maximum38°C
(100°F)		37°C
(100°F)		37°C
(99°F)		34°C
(93°F)		32°C
(89°F)		29°C
(84°F)		32°C
(89°F)		37°C
(98°F)		38°C
(100°F)		39°C
(102°F)		38°C
(100°F)		38°C
(101°F)
Average high33°C
(92°F)		33°C
(91°F)		31°C
(88°F)		28°C
(83°F)		24°C
(76°F)		23°C
(73°F)		23°C
(73°F)		25°C
(78°F)		27°C
(81°F)		29°C
(85°F)		31°C
(88°F)		33°C
(91°F)
Daily mean28°C
(83°F)		27°C
(81°F)		26°C
(78°F)		23°C
(73°F)		19°C
(67°F)		18°C
(64°F)		17°C
(62°F)		19°C
(66°F)		21°C
(71°F)		24°C
(75°F)		25°C
(78°F)		27°C
(81°F)
Average low24°C
(75°F)		22°C
(72°F)		21°C
(70°F)		19°C
(66°F)		15°C
(60°F)		14°C
(57°F)		12°C
(54°F)		13°C
(55°F)		16°C
(62°F)		19°C
(66°F)		20°C
(68°F)		22°C
(71°F)
Mean minimum18°C
(65°F)		17°C
(62°F)		15°C
(60°F)		13°C
(55°F)		8°C
(47°F)		5°C
(41°F)		2°C
(36°F)		4°C
(39°F)		9°C
(49°F)		13°C
(55°F)		15°C
(60°F)		16°C
(61°F)
Minimum14°C
(58°F)		14°C
(58°F)		14°C
(57°F)		9°C
(49°F)		5°C
(42°F)		2°C
(35°F)		-1°C
(31°F)		1°C
(34°F)		8°C
(47°F)		12°C
(54°F)		12°C
(54°F)		15°C
(59°F)

Compare climate in Formosa with other places

Compare temperature, precipitation, sunshine, UV index in Formosa, Argentina with other places around the world.

Monthly average precipitation in Formosa, Argentina

Formosa usually has the most precipitation in May, October and November, with an average of 9 rainy days and 167 mm (6.6 inches) of precipitation per month. The driest months in Formosa are February, July and August. On average, 61 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Formosa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)132 (5.2)69 (2.7)106 (4.2)121 (4.8)171 (6.7)73 (2.9)63 (2.5)50 (2.0)87 (3.4)155 (6.1)175 (6.9)82 (3.2)
Average precipitation days (≥ 1 mm)128107886571197

Monthly sunshine hours in Formosa, Argentina

The sunniest months in Formosa are February, November and December, when the sun shines an average of 11 hours 7 minutes a day. Least sunny months in Formosa: May, June and July receive an average of 7 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Formosa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours276308308272235224250293269283322370
Mean daily daylight hours13h 33m12h 57m12h 11m11h 26m10h 48m10h 30m10h 40m11h 13m11h 56m12h 42m13h 23m13h 44m

Solar UV radiation in Formosa, Argentina

Formosa experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Formosa UV Index data.

Average daily maximum UV levels by month for Formosa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)14141310756810131415