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Monthly climate in General Jose de San Martin, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification General Jose de San Martin features a humid subtropical climate (Cfa). Temperatures typically range between 16 °C (61 °F) and 28 °C (82 °F) through the year, but rarely can drop to -2 °C (30 °F) or can rise to as high as 43 °C (109 °F). The average annual precipitation amounts to about 1100 mm (43.3 inches) and receives 98 rainy days on the 1 mm (0.04 inches) threshold annually. General Jose de San Martin enjoys an average of 3417 hours of sunshine throughout the year, and daylight varies from 10 hours 29 minutes to 13 hours 45 minutes per day.

Monthly average temperatures in General Jose de San Martin, Argentina

The warmest months in General Jose de San Martin are January, February and December, with daily mean temperatures ranging from 27 to 28 °C (80 - 82 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 16 to 18 °C (61 - 65 °F) throughout the day. On average each year, General Jose de San Martin experiences 230 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in General Jose de San Martin. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum41°C
(106°F)		40°C
(105°F)		40°C
(104°F)		36°C
(97°F)		34°C
(94°F)		34°C
(94°F)		33°C
(92°F)		38°C
(100°F)		42°C
(107°F)		43°C
(109°F)		41°C
(106°F)		40°C
(105°F)
Mean maximum38°C
(100°F)		37°C
(100°F)		37°C
(99°F)		33°C
(92°F)		31°C
(88°F)		28°C
(83°F)		32°C
(89°F)		36°C
(97°F)		38°C
(101°F)		39°C
(102°F)		38°C
(100°F)		39°C
(102°F)
Average high33°C
(92°F)		32°C
(91°F)		31°C
(88°F)		27°C
(82°F)		24°C
(75°F)		22°C
(72°F)		22°C
(72°F)		25°C
(78°F)		27°C
(81°F)		28°C
(83°F)		31°C
(87°F)		33°C
(91°F)
Daily mean28°C
(82°F)		27°C
(80°F)		25°C
(77°F)		22°C
(72°F)		19°C
(66°F)		17°C
(63°F)		16°C
(61°F)		18°C
(65°F)		21°C
(70°F)		23°C
(74°F)		25°C
(77°F)		27°C
(81°F)
Average low23°C
(74°F)		21°C
(71°F)		20°C
(68°F)		18°C
(64°F)		14°C
(58°F)		13°C
(55°F)		11°C
(52°F)		12°C
(54°F)		16°C
(60°F)		18°C
(64°F)		19°C
(67°F)		21°C
(70°F)
Mean minimum17°C
(63°F)		16°C
(60°F)		14°C
(57°F)		11°C
(52°F)		6°C
(44°F)		3°C
(38°F)		1°C
(34°F)		2°C
(36°F)		8°C
(47°F)		11°C
(53°F)		14°C
(57°F)		15°C
(60°F)
Minimum14°C
(57°F)		13°C
(56°F)		12°C
(53°F)		8°C
(46°F)		2°C
(37°F)		-0°C
(32°F)		-2°C
(30°F)		0°C
(33°F)		8°C
(46°F)		11°C
(52°F)		11°C
(52°F)		14°C
(57°F)

Compare climate in General Jose de San Martin with other places

Compare temperature, precipitation, sunshine, UV index in General Jose de San Martin, Argentina with other places around the world.

Monthly average precipitation in General Jose de San Martin, Argentina

General Jose de San Martin usually has the most precipitation in January, May and November, with an average of 9 rainy days and 134 mm (5.3 inches) of precipitation per month. The driest months in General Jose de San Martin 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 General Jose de San Martin. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)131 (5.1)65 (2.6)107 (4.2)115 (4.5)123 (4.8)59 (2.3)40 (1.6)34 (1.3)91 (3.6)123 (4.8)150 (5.9)64 (2.5)
Average precipitation days (≥ 1 mm)1081171075481297

Monthly sunshine hours in General Jose de San Martin, Argentina

The sunniest months in General Jose de San Martin are February, November and December, when the sun shines an average of 11 hours 11 minutes a day. Least sunny months in General Jose de San Martin: May, June and July receive an average of 7 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in General Jose de San Martin. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours276306306269232219249294274286327372
Mean daily daylight hours13h 34m12h 58m12h 11m11h 25m10h 47m10h 29m10h 38m11h 12m11h 56m12h 43m13h 24m13h 45m

Solar UV radiation in General Jose de San Martin, Argentina

General Jose de San Martin 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 7. For more detailed information, check out our hourly General Jose de San Martin UV Index data.

Average daily maximum UV levels by month for General Jose de San Martin. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)15141310756810131415