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Monthly climate in Rio Grande, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Rio Grande features a subpolar climate (Cfc). Temperatures typically range between 3 °C (37 °F) and 11 °C (52 °F) through the year, but rarely can drop to -7 °C (20 °F) or can rise to as high as 21 °C (70 °F). The average annual precipitation amounts to about 466 mm (18.4 inches) and receives 111 rainy days on the 1 mm (0.04 inches) threshold annually. Rio Grande enjoys an average of 2965 hours of sunshine throughout the year, and daylight varies from 7 hours 28 minutes to 16 hours 58 minutes per day.

Monthly average temperatures in Rio Grande, Argentina

The warmest months in Rio Grande are January, February and December, with daily mean temperatures ranging from 10 to 11 °C (51 - 52 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 3 to 4 °C (37 - 39 °F) throughout the day. On average each year, Rio Grande experiences 0 days above 25 °C (77.0 °F) and 25 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Rio Grande. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum17°C
(63°F)		21°C
(70°F)		17°C
(63°F)		14°C
(58°F)		12°C
(54°F)		9°C
(49°F)		10°C
(50°F)		11°C
(53°F)		11°C
(53°F)		14°C
(57°F)		14°C
(58°F)		18°C
(66°F)
Mean maximum16°C
(61°F)		19°C
(66°F)		15°C
(60°F)		13°C
(56°F)		11°C
(52°F)		8°C
(47°F)		8°C
(47°F)		8°C
(47°F)		11°C
(51°F)		12°C
(53°F)		14°C
(57°F)		16°C
(61°F)
Average high13°C
(56°F)		14°C
(57°F)		12°C
(54°F)		10°C
(50°F)		8°C
(46°F)		5°C
(41°F)		4°C
(40°F)		5°C
(42°F)		7°C
(45°F)		8°C
(47°F)		11°C
(51°F)		13°C
(55°F)
Daily mean11°C
(51°F)		11°C
(52°F)		10°C
(50°F)		8°C
(46°F)		6°C
(43°F)		3°C
(38°F)		3°C
(37°F)		4°C
(39°F)		5°C
(41°F)		6°C
(43°F)		8°C
(47°F)		10°C
(51°F)
Average low8°C
(47°F)		9°C
(48°F)		8°C
(46°F)		6°C
(42°F)		4°C
(39°F)		1°C
(35°F)		1°C
(34°F)		2°C
(35°F)		2°C
(37°F)		4°C
(39°F)		6°C
(43°F)		8°C
(46°F)
Mean minimum5°C
(41°F)		5°C
(42°F)		4°C
(39°F)		1°C
(35°F)		-1°C
(31°F)		-2°C
(28°F)		-4°C
(25°F)		-2°C
(28°F)		-1°C
(31°F)		-0°C
(32°F)		3°C
(37°F)		4°C
(40°F)
Minimum4°C
(40°F)		3°C
(39°F)		3°C
(37°F)		0°C
(33°F)		-3°C
(27°F)		-6°C
(22°F)		-7°C
(20°F)		-4°C
(26°F)		-2°C
(29°F)		-1°C
(30°F)		1°C
(35°F)		3°C
(37°F)

Compare climate in Rio Grande with other places

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

Monthly average precipitation in Rio Grande, Argentina

Rio Grande usually has the most precipitation in January, March and May, with an average of 11 rainy days and 53 mm (2.1 inches) of precipitation per month. The driest months in Rio Grande are July, September and October. On average, 28 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rio Grande. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)49 (1.9)38 (1.5)59 (2.3)41 (1.6)51 (2.0)32 (1.3)30 (1.2)38 (1.5)23 (0.9)29 (1.1)36 (1.4)39 (1.5)
Average precipitation days (≥ 1 mm)131012109871067910

Monthly sunshine hours in Rio Grande, Argentina

The sunniest months in Rio Grande are October, November and December, when the sun shines an average of 11 hours 13 minutes a day. Least sunny months in Rio Grande: May, June and July receive an average of 5 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rio Grande. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours269285247209169139153203254314347371
Mean daily daylight hours16h 22m14h 33m12h 25m10h 16m8h 25m7h 28m8h 0m9h 39m11h 43m13h 52m15h 52m16h 58m

Solar UV radiation in Rio Grande, Argentina

Rio Grande experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 10 - 12, which corresponds to the Very High / Extreme category of sun exposure. May, June and July are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Rio Grande UV Index data.

Average daily maximum UV levels by month for Rio Grande. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)108632113491210