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Monthly climate in Posadas, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Posadas features a humid subtropical climate (Cfa). Temperatures typically range between 16 °C (61 °F) and 27 °C (81 °F) through the year, but rarely can drop to 1 °C (33 °F) or can rise to as high as 41 °C (106 °F). The average annual precipitation amounts to about 1432 mm (56.4 inches) and receives 107 rainy days on the 1 mm (0.04 inches) threshold annually. Posadas enjoys an average of 3417 hours of sunshine throughout the year, and daylight varies from 10 hours 25 minutes to 13 hours 49 minutes per day.

Monthly average temperatures in Posadas, Argentina

The warmest months in Posadas are January, February and December, with daily mean temperatures ranging from 26 to 27 °C (79 - 81 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 16 to 18 °C (61 - 65 °F) throughout the day. On average each year, Posadas experiences 228 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 Posadas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum41°C
(106°F)		40°C
(104°F)		38°C
(101°F)		34°C
(94°F)		33°C
(92°F)		30°C
(87°F)		32°C
(89°F)		37°C
(99°F)		38°C
(100°F)		40°C
(104°F)		39°C
(102°F)		38°C
(100°F)
Mean maximum37°C
(99°F)		37°C
(99°F)		36°C
(98°F)		33°C
(91°F)		30°C
(87°F)		27°C
(81°F)		30°C
(87°F)		34°C
(94°F)		36°C
(97°F)		36°C
(97°F)		36°C
(97°F)		37°C
(99°F)
Average high32°C
(90°F)		32°C
(89°F)		30°C
(87°F)		27°C
(81°F)		23°C
(74°F)		22°C
(72°F)		22°C
(71°F)		24°C
(75°F)		26°C
(80°F)		28°C
(83°F)		30°C
(86°F)		32°C
(90°F)
Daily mean27°C
(81°F)		26°C
(79°F)		25°C
(77°F)		22°C
(72°F)		19°C
(66°F)		17°C
(63°F)		16°C
(61°F)		18°C
(65°F)		21°C
(70°F)		23°C
(73°F)		24°C
(76°F)		26°C
(79°F)
Average low23°C
(73°F)		21°C
(70°F)		20°C
(69°F)		18°C
(64°F)		15°C
(59°F)		13°C
(56°F)		12°C
(54°F)		13°C
(55°F)		16°C
(61°F)		18°C
(65°F)		19°C
(67°F)		21°C
(70°F)
Mean minimum18°C
(65°F)		16°C
(61°F)		15°C
(59°F)		12°C
(54°F)		8°C
(48°F)		5°C
(41°F)		3°C
(37°F)		4°C
(40°F)		9°C
(49°F)		12°C
(54°F)		14°C
(58°F)		16°C
(60°F)
Minimum16°C
(60°F)		13°C
(56°F)		13°C
(56°F)		9°C
(48°F)		7°C
(44°F)		3°C
(37°F)		1°C
(34°F)		1°C
(33°F)		7°C
(46°F)		10°C
(51°F)		12°C
(54°F)		13°C
(56°F)

Compare climate in Posadas with other places

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

Monthly average precipitation in Posadas, Argentina

Posadas usually has the most precipitation in January, May and October, with an average of 12 rainy days and 181 mm (7.1 inches) of precipitation per month. The driest months in Posadas are July, August and December. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Posadas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)156 (6.2)91 (3.6)106 (4.2)122 (4.8)211 (8.3)94 (3.7)80 (3.1)72 (2.8)101 (4.0)175 (6.9)142 (5.6)82 (3.2)
Average precipitation days (≥ 1 mm)1310961187591298

Monthly sunshine hours in Posadas, Argentina

The sunniest months in Posadas are March, November and December, when the sun shines an average of 10 hours 58 minutes a day. Least sunny months in Posadas: 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 Posadas. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours271307315277240220250283265290319374
Mean daily daylight hours13h 37m12h 59m12h 12m11h 24m10h 44m10h 25m10h 35m11h 10m11h 56m12h 44m13h 27m13h 49m

Solar UV radiation in Posadas, Argentina

Posadas 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 6. For more detailed information, check out our hourly Posadas UV Index data.

Average daily maximum UV levels by month for Posadas. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)15141310656710131414