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Monthly climate in Riachuelo, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Riachuelo features a humid subtropical climate (Cfa). Temperatures typically range between 15 °C (60 °F) and 28 °C (82 °F) through the year, but rarely can drop to 0 °C (33 °F) or can rise to as high as 43 °C (109 °F). The average annual precipitation amounts to about 1161 mm (45.7 inches) and receives 93 rainy days on the 1 mm (0.04 inches) threshold annually. Riachuelo enjoys an average of 3402 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 Riachuelo, Argentina

The warmest months in Riachuelo are January, February and December, with daily mean temperatures ranging from 26 to 28 °C (80 - 82 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 15 to 17 °C (60 - 64 °F) throughout the day. On average each year, Riachuelo experiences 221 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 Riachuelo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum41°C
(107°F)		41°C
(107°F)		39°C
(103°F)		34°C
(94°F)		32°C
(90°F)		33°C
(91°F)		32°C
(90°F)		37°C
(98°F)		40°C
(105°F)		43°C
(109°F)		39°C
(103°F)		39°C
(103°F)
Mean maximum37°C
(100°F)		37°C
(99°F)		36°C
(98°F)		33°C
(91°F)		30°C
(86°F)		27°C
(82°F)		31°C
(87°F)		35°C
(95°F)		37°C
(99°F)		38°C
(101°F)		36°C
(98°F)		38°C
(100°F)
Average high33°C
(91°F)		32°C
(90°F)		30°C
(86°F)		27°C
(81°F)		23°C
(74°F)		21°C
(70°F)		21°C
(70°F)		24°C
(76°F)		26°C
(79°F)		28°C
(83°F)		30°C
(86°F)		32°C
(90°F)
Daily mean28°C
(82°F)		27°C
(80°F)		25°C
(77°F)		22°C
(72°F)		18°C
(65°F)		16°C
(62°F)		15°C
(60°F)		17°C
(64°F)		20°C
(69°F)		23°C
(73°F)		25°C
(77°F)		26°C
(80°F)
Average low23°C
(74°F)		22°C
(71°F)		20°C
(68°F)		18°C
(64°F)		15°C
(58°F)		13°C
(55°F)		11°C
(53°F)		12°C
(54°F)		15°C
(60°F)		18°C
(64°F)		19°C
(67°F)		21°C
(70°F)
Mean minimum18°C
(64°F)		16°C
(61°F)		14°C
(58°F)		12°C
(54°F)		8°C
(47°F)		4°C
(40°F)		2°C
(36°F)		3°C
(38°F)		9°C
(49°F)		12°C
(54°F)		14°C
(58°F)		15°C
(60°F)
Minimum15°C
(59°F)		14°C
(57°F)		13°C
(55°F)		10°C
(50°F)		6°C
(43°F)		2°C
(35°F)		1°C
(34°F)		0°C
(33°F)		8°C
(46°F)		11°C
(52°F)		11°C
(52°F)		14°C
(57°F)

Compare climate in Riachuelo with other places

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

Monthly average precipitation in Riachuelo, Argentina

Riachuelo usually has the most precipitation in January, March and November, with an average of 9 rainy days and 142 mm (5.6 inches) of precipitation per month. The driest months in Riachuelo are June, July and August. On average, 46 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Riachuelo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)139 (5.5)70 (2.8)139 (5.5)122 (4.8)129 (5.1)60 (2.4)38 (1.5)39 (1.5)84 (3.3)118 (4.6)147 (5.8)76 (3.0)
Average precipitation days (≥ 1 mm)107971065591096

Monthly sunshine hours in Riachuelo, Argentina

The sunniest months in Riachuelo are February, November and December, when the sun shines an average of 11 hours 11 minutes a day. Least sunny months in Riachuelo: May, June and July receive an average of 7 hours 30 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Riachuelo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours270311310265232218240287280289320376
Mean daily daylight hours13h 38m13h 0m12h 12m11h 23m10h 44m10h 25m10h 35m11h 10m11h 56m12h 45m13h 28m13h 49m

Solar UV radiation in Riachuelo, Argentina

Riachuelo experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 14 - 14, 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 Riachuelo UV Index data.

Average daily maximum UV levels by month for Riachuelo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)14141210756710131414