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Monthly climate in Mercedes, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Mercedes features a humid subtropical climate (Cfa). Temperatures typically range between 10 °C (50 °F) and 24 °C (76 °F) through the year, but rarely can drop to -4 °C (24 °F) or can rise to as high as 42 °C (107 °F). The average annual precipitation amounts to about 827 mm (32.6 inches) and receives 80 rainy days on the 1 mm (0.04 inches) threshold annually. Mercedes enjoys an average of 3408 hours of sunshine throughout the year, and daylight varies from 9 hours 51 minutes to 14 hours 25 minutes per day.

Monthly average temperatures in Mercedes, Argentina

The warmest months in Mercedes are January, February and December, with daily mean temperatures ranging from 23 to 24 °C (73 - 76 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 10 to 12 °C (50 - 53 °F) throughout the day. On average each year, Mercedes experiences 125 days above 25 °C (77.0 °F) and 5 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Mercedes. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum42°C
(107°F)		36°C
(98°F)		34°C
(93°F)		32°C
(89°F)		28°C
(83°F)		25°C
(77°F)		25°C
(77°F)		27°C
(81°F)		30°C
(86°F)		35°C
(95°F)		35°C
(96°F)		38°C
(101°F)
Mean maximum36°C
(98°F)		35°C
(95°F)		32°C
(90°F)		30°C
(85°F)		26°C
(79°F)		21°C
(70°F)		23°C
(74°F)		26°C
(79°F)		28°C
(83°F)		31°C
(87°F)		34°C
(93°F)		35°C
(96°F)
Average high30°C
(86°F)		29°C
(84°F)		26°C
(80°F)		24°C
(75°F)		19°C
(66°F)		16°C
(61°F)		15°C
(59°F)		18°C
(64°F)		19°C
(67°F)		22°C
(72°F)		26°C
(79°F)		29°C
(84°F)
Daily mean24°C
(76°F)		23°C
(73°F)		21°C
(69°F)		18°C
(64°F)		13°C
(57°F)		11°C
(52°F)		10°C
(50°F)		12°C
(53°F)		14°C
(57°F)		16°C
(62°F)		20°C
(69°F)		23°C
(73°F)
Average low18°C
(65°F)		17°C
(63°F)		15°C
(60°F)		13°C
(56°F)		9°C
(49°F)		7°C
(44°F)		6°C
(42°F)		6°C
(44°F)		9°C
(48°F)		11°C
(52°F)		14°C
(58°F)		16°C
(62°F)
Mean minimum11°C
(51°F)		9°C
(49°F)		8°C
(47°F)		6°C
(43°F)		2°C
(36°F)		-2°C
(29°F)		-3°C
(28°F)		-1°C
(30°F)		3°C
(37°F)		4°C
(39°F)		6°C
(44°F)		10°C
(49°F)
Minimum10°C
(50°F)		8°C
(47°F)		5°C
(42°F)		2°C
(36°F)		-1°C
(31°F)		-4°C
(25°F)		-4°C
(24°F)		-3°C
(28°F)		-1°C
(31°F)		2°C
(36°F)		5°C
(42°F)		7°C
(45°F)

Compare climate in Mercedes with other places

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

Monthly average precipitation in Mercedes, Argentina

Mercedes usually has the most precipitation in March, April and October, with an average of 7 rainy days and 87 mm (3.4 inches) of precipitation per month. The driest months in Mercedes are June, July and August. On average, 44 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mercedes. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)76 (3.0)63 (2.5)77 (3.0)94 (3.7)76 (3.0)44 (1.7)43 (1.7)45 (1.8)77 (3.0)89 (3.5)65 (2.6)77 (3.0)
Average precipitation days (≥ 1 mm)767776746887

Monthly sunshine hours in Mercedes, Argentina

The sunniest months in Mercedes are February, November and December, when the sun shines an average of 11 hours 33 minutes a day. Least sunny months in Mercedes: May, June and July receive an average of 7 hours 13 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mercedes. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours295323316249235213215269262311339376
Mean daily daylight hours14h 9m13h 18m12h 14m11h 10m10h 16m9h 51m10h 5m10h 52m11h 53m12h 58m13h 55m14h 25m

Solar UV radiation in Mercedes, Argentina

Mercedes experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure. May, June and July are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Mercedes UV Index data.

Average daily maximum UV levels by month for Mercedes. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)141311753468101314