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Monthly climate in Primero de Mayo, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Primero de Mayo features a cold desert climate (BWk). Temperatures typically range between 8 °C (48 °F) and 28 °C (82 °F) through the year, but rarely can drop to -3 °C (26 °F) or can rise to as high as 42 °C (108 °F). The average annual precipitation amounts to about 133 mm (5.2 inches) and receives 22 rainy days on the 1 mm (0.04 inches) threshold annually. Primero de Mayo enjoys an average of 3803 hours of sunshine throughout the year, and daylight varies from 10 hours 3 minutes to 14 hours 12 minutes per day.

Monthly average temperatures in Primero de Mayo, Argentina

The warmest months in Primero de Mayo are January, February and December, with daily mean temperatures ranging from 26 to 28 °C (79 - 82 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 8 to 12 °C (48 - 54 °F) throughout the day. On average each year, Primero de Mayo experiences 177 days above 25 °C (77.0 °F) and 8 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Primero de Mayo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum42°C
(108°F)		41°C
(107°F)		39°C
(102°F)		33°C
(92°F)		26°C
(80°F)		27°C
(82°F)		22°C
(72°F)		31°C
(89°F)		37°C
(99°F)		38°C
(101°F)		38°C
(100°F)		40°C
(104°F)
Mean maximum40°C
(104°F)		39°C
(102°F)		37°C
(99°F)		31°C
(89°F)		25°C
(77°F)		22°C
(72°F)		21°C
(70°F)		29°C
(84°F)		33°C
(91°F)		35°C
(95°F)		36°C
(98°F)		40°C
(103°F)
Average high34°C
(94°F)		32°C
(91°F)		30°C
(86°F)		25°C
(78°F)		20°C
(68°F)		16°C
(61°F)		16°C
(60°F)		20°C
(68°F)		23°C
(74°F)		26°C
(80°F)		30°C
(87°F)		33°C
(91°F)
Daily mean28°C
(82°F)		26°C
(79°F)		23°C
(73°F)		19°C
(66°F)		13°C
(56°F)		9°C
(49°F)		8°C
(48°F)		12°C
(54°F)		16°C
(61°F)		20°C
(68°F)		24°C
(75°F)		26°C
(79°F)
Average low21°C
(71°F)		20°C
(69°F)		17°C
(63°F)		13°C
(56°F)		8°C
(47°F)		4°C
(39°F)		3°C
(37°F)		5°C
(42°F)		10°C
(50°F)		13°C
(56°F)		17°C
(63°F)		19°C
(67°F)
Mean minimum15°C
(60°F)		14°C
(58°F)		10°C
(51°F)		7°C
(46°F)		2°C
(37°F)		-1°C
(31°F)		-2°C
(29°F)		-0°C
(32°F)		3°C
(38°F)		5°C
(41°F)		11°C
(52°F)		14°C
(57°F)
Minimum11°C
(52°F)		14°C
(57°F)		7°C
(46°F)		3°C
(37°F)		0°C
(33°F)		-3°C
(26°F)		-3°C
(26°F)		-2°C
(28°F)		1°C
(33°F)		4°C
(39°F)		9°C
(49°F)		12°C
(54°F)

Compare climate in Primero de Mayo with other places

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

Monthly average precipitation in Primero de Mayo, Argentina

Primero de Mayo usually has the most precipitation in January, March and December, with an average of 2 rainy days and 18 mm (0.7 inches) of precipitation per month. The driest months in Primero de Mayo are June, July and August. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Primero de Mayo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)18 (0.7)11 (0.4)20 (0.8)14 (0.5)13 (0.5)3 (0.1)3 (0.1)3 (0.1)7 (0.3)12 (0.5)12 (0.5)18 (0.7)
Average precipitation days (≥ 1 mm)322231101223

Monthly sunshine hours in Primero de Mayo, Argentina

The sunniest months in Primero de Mayo are October, November and December, when the sun shines an average of 12 hours 4 minutes a day. Least sunny months in Primero de Mayo: April, May and June receive an average of 8 hours 55 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Primero de Mayo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours309322330276268267281312321352367390
Mean daily daylight hours13h 58m13h 12m12h 14m11h 14m10h 26m10h 3m10h 15m10h 58m11h 54m12h 53m13h 46m14h 12m

Solar UV radiation in Primero de Mayo, Argentina

Primero de Mayo experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 14 - 15, 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 6. For more detailed information, check out our hourly Primero de Mayo UV Index data.

Average daily maximum UV levels by month for Primero de Mayo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151412964569121415