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Monthly climate in Las Heras, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Las Heras features a cold semi-arid climate (BSk). Temperatures typically range between 4 °C (39 °F) and 19 °C (66 °F) through the year, but rarely can drop to -12 °C (10 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 227 mm (8.9 inches) and receives 40 rainy days on the 1 mm (0.04 inches) threshold annually. Las Heras enjoys an average of 3512 hours of sunshine throughout the year, and daylight varies from 8 hours 36 minutes to 15 hours 44 minutes per day.

Monthly average temperatures in Las Heras, Argentina

The warmest months in Las Heras are January, February and December, with daily mean temperatures ranging from 18 to 19 °C (65 - 66 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 4 to 6 °C (39 - 44 °F) throughout the day. On average each year, Las Heras experiences 51 days above 25 °C (77.0 °F) and 36 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Las Heras. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum34°C
(93°F)		37°C
(99°F)		34°C
(94°F)		27°C
(82°F)		21°C
(71°F)		15°C
(60°F)		16°C
(62°F)		20°C
(69°F)		25°C
(77°F)		27°C
(81°F)		31°C
(88°F)		35°C
(95°F)
Mean maximum32°C
(90°F)		34°C
(94°F)		30°C
(86°F)		24°C
(76°F)		20°C
(68°F)		13°C
(56°F)		13°C
(55°F)		18°C
(64°F)		22°C
(72°F)		25°C
(77°F)		29°C
(85°F)		33°C
(91°F)
Average high25°C
(76°F)		25°C
(78°F)		22°C
(71°F)		17°C
(63°F)		12°C
(54°F)		8°C
(46°F)		8°C
(46°F)		11°C
(52°F)		14°C
(58°F)		18°C
(64°F)		22°C
(72°F)		24°C
(76°F)
Daily mean18°C
(65°F)		19°C
(66°F)		15°C
(60°F)		12°C
(53°F)		8°C
(46°F)		4°C
(39°F)		4°C
(39°F)		6°C
(44°F)		9°C
(48°F)		12°C
(53°F)		16°C
(60°F)		18°C
(65°F)
Average low12°C
(54°F)		13°C
(55°F)		10°C
(51°F)		7°C
(45°F)		4°C
(39°F)		1°C
(33°F)		1°C
(34°F)		2°C
(36°F)		4°C
(39°F)		6°C
(44°F)		9°C
(49°F)		12°C
(54°F)
Mean minimum6°C
(44°F)		7°C
(45°F)		4°C
(39°F)		2°C
(35°F)		-3°C
(26°F)		-7°C
(19°F)		-6°C
(22°F)		-4°C
(26°F)		-3°C
(28°F)		-0°C
(32°F)		4°C
(40°F)		7°C
(45°F)
Minimum5°C
(42°F)		5°C
(42°F)		1°C
(34°F)		-3°C
(27°F)		-5°C
(24°F)		-12°C
(10°F)		-12°C
(10°F)		-7°C
(20°F)		-4°C
(25°F)		-4°C
(25°F)		3°C
(37°F)		6°C
(43°F)

Compare climate in Las Heras with other places

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

Monthly average precipitation in Las Heras, Argentina

Las Heras usually has the most precipitation in March, April and June, with an average of 4 rainy days and 30 mm (1.2 inches) of precipitation per month. The driest months in Las Heras are January, October and November. On average, 9 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Las Heras. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)6 (0.2)15 (0.6)32 (1.3)28 (1.1)24 (0.9)29 (1.2)20 (0.8)22 (0.9)16 (0.6)11 (0.4)11 (0.4)14 (0.6)
Average precipitation days (≥ 1 mm)124456444222

Monthly sunshine hours in Las Heras, Argentina

The sunniest months in Las Heras are October, November and December, when the sun shines an average of 12 hours 25 minutes a day. Least sunny months in Las Heras: May, June and July receive an average of 6 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Las Heras. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours324333311257220189199247285358375408
Mean daily daylight hours15h 18m13h 58m12h 20m10h 41m9h 18m8h 36m8h 59m10h 13m11h 47m13h 27m14h 57m15h 44m

Solar UV radiation in Las Heras, Argentina

Las Heras experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 11 - 13, which corresponds to the Extreme category of sun exposure. May, June and July are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Las Heras UV Index data.

Average daily maximum UV levels by month for Las Heras. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)1311853224681112