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Monthly climate in Mariano Moreno, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Mariano Moreno features a oceanic climate (Cfb). Temperatures typically range between 2 °C (37 °F) and 20 °C (69 °F) through the year, but rarely can drop to -17 °C (2 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 314 mm (12.4 inches) and receives 48 rainy days on the 1 mm (0.04 inches) threshold annually. Mariano Moreno enjoys an average of 3670 hours of sunshine throughout the year, and daylight varies from 9 hours 28 minutes to 14 hours 48 minutes per day.

Monthly average temperatures in Mariano Moreno, Argentina

The warmest months in Mariano Moreno are January, February and December, with daily mean temperatures ranging from 19 to 20 °C (66 - 69 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 2 to 5 °C (37 - 41 °F) throughout the day. On average each year, Mariano Moreno experiences 99 days above 25 °C (77.0 °F) and 66 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Mariano Moreno. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum38°C
(101°F)		36°C
(98°F)		35°C
(96°F)		32°C
(89°F)		23°C
(74°F)		19°C
(66°F)		18°C
(64°F)		21°C
(71°F)		28°C
(82°F)		30°C
(86°F)		32°C
(89°F)		36°C
(98°F)
Mean maximum37°C
(100°F)		35°C
(95°F)		33°C
(91°F)		28°C
(83°F)		21°C
(71°F)		14°C
(57°F)		15°C
(60°F)		20°C
(68°F)		26°C
(79°F)		27°C
(81°F)		30°C
(87°F)		34°C
(93°F)
Average high29°C
(84°F)		28°C
(82°F)		25°C
(77°F)		20°C
(68°F)		14°C
(57°F)		9°C
(48°F)		8°C
(46°F)		11°C
(52°F)		16°C
(60°F)		18°C
(65°F)		24°C
(75°F)		27°C
(81°F)
Daily mean20°C
(69°F)		19°C
(67°F)		16°C
(61°F)		12°C
(54°F)		7°C
(45°F)		4°C
(39°F)		2°C
(37°F)		5°C
(41°F)		8°C
(47°F)		11°C
(52°F)		16°C
(61°F)		19°C
(66°F)
Average low12°C
(53°F)		11°C
(53°F)		8°C
(47°F)		5°C
(42°F)		2°C
(35°F)		-0°C
(32°F)		-2°C
(28°F)		-1°C
(31°F)		2°C
(35°F)		4°C
(40°F)		8°C
(46°F)		10°C
(50°F)
Mean minimum4°C
(39°F)		5°C
(42°F)		0°C
(33°F)		-1°C
(31°F)		-5°C
(23°F)		-8°C
(18°F)		-11°C
(13°F)		-9°C
(16°F)		-5°C
(24°F)		-4°C
(24°F)		2°C
(35°F)		4°C
(39°F)
Minimum0°C
(33°F)		4°C
(39°F)		-3°C
(26°F)		-3°C
(27°F)		-9°C
(17°F)		-17°C
(2°F)		-16°C
(4°F)		-14°C
(8°F)		-6°C
(21°F)		-10°C
(14°F)		1°C
(34°F)		3°C
(37°F)

Compare climate in Mariano Moreno with other places

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

Monthly average precipitation in Mariano Moreno, Argentina

Mariano Moreno usually has the most precipitation in May, June and July, with an average of 7 rainy days and 53 mm (2.1 inches) of precipitation per month. The driest months in Mariano Moreno are January, March and September. On average, 11 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mariano Moreno. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)6 (0.2)17 (0.7)11 (0.4)23 (0.9)29 (1.1)71 (2.8)58 (2.3)26 (1.0)15 (0.6)25 (1.0)17 (0.7)15 (0.6)
Average precipitation days (≥ 1 mm)132459753432

Monthly sunshine hours in Mariano Moreno, Argentina

The sunniest months in Mariano Moreno are October, November and December, when the sun shines an average of 12 hours 11 minutes a day. Least sunny months in Mariano Moreno: May, June and July receive an average of 7 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mariano Moreno. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours324332348273246201230277312349375396
Mean daily daylight hours14h 30m13h 30m12h 16m11h 1m9h 59m9h 28m9h 45m10h 40m11h 51m13h 7m14h 14m14h 48m

Solar UV radiation in Mariano Moreno, Argentina

Mariano Moreno experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 13 - 15, 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 4. For more detailed information, check out our hourly Mariano Moreno UV Index data.

Average daily maximum UV levels by month for Mariano Moreno. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151310743458111314