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Monthly climate in San Luis, Argentina

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification San Luis features a cold semi-arid climate (BSk).Temperatures typically range between 9 °C (48 °F) and 24 °C (75 °F) through the year, but rarely can drop to -5 °C (23 °F) or can rise to as high as 40 °C (104 °F).The average annual precipitation amounts to about 549 mm (21.6 inches) and receives 72 rainy days on the 1 mm (0.04 inches) threshold annually.San Luis enjoys an average of 3732 hours of sunshine throughout the year, and daylight varies from 9 hours 58 minutes to 14 hours 18 minutes per day.

Monthly average temperatures in San Luis, Argentina §

The warmest months in San Luis are January, February and December, with daily mean temperatures ranging from 22 to 24 °C (72 - 75 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 9 to 12 °C (48 - 54 °F) throughout the day. On average each year, San Luis experiences 145 days above 25 °C (77.0 °F) and 10 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in San Luis, Argentina.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 40°C
(104°F)		 37°C
(98°F)		 36°C
(96°F)		 31°C
(88°F)		 31°C
(88°F)		 25°C
(77°F)		 25°C
(77°F)		 30°C
(86°F)		 34°C
(94°F)		 38°C
(101°F)		 37°C
(99°F)		 39°C
(103°F)
Mean maximum 37°C
(98°F)		 35°C
(95°F)		 33°C
(92°F)		 29°C
(85°F)		 26°C
(79°F)		 22°C
(71°F)		 23°C
(74°F)		 28°C
(83°F)		 32°C
(90°F)		 35°C
(95°F)		 35°C
(96°F)		 38°C
(101°F)
Average high 30°C
(86°F)		 28°C
(83°F)		 26°C
(80°F)		 23°C
(74°F)		 19°C
(67°F)		 16°C
(61°F)		 16°C
(61°F)		 19°C
(67°F)		 22°C
(72°F)		 25°C
(76°F)		 27°C
(82°F)		 30°C
(86°F)
Daily mean 24°C
(75°F)		 22°C
(72°F)		 20°C
(69°F)		 17°C
(63°F)		 13°C
(55°F)		 9°C
(49°F)		 9°C
(48°F)		 12°C
(54°F)		 15°C
(59°F)		 18°C
(64°F)		 21°C
(70°F)		 23°C
(74°F)
Average low 18°C
(65°F)		 17°C
(63°F)		 15°C
(59°F)		 12°C
(54°F)		 8°C
(46°F)		 4°C
(39°F)		 3°C
(38°F)		 5°C
(42°F)		 9°C
(48°F)		 12°C
(53°F)		 15°C
(59°F)		 17°C
(63°F)
Mean minimum 11°C
(53°F)		 10°C
(50°F)		 6°C
(43°F)		 6°C
(42°F)		 1°C
(34°F)		 -2°C
(29°F)		 -3°C
(26°F)		 -2°C
(28°F)		 1°C
(34°F)		 2°C
(37°F)		 8°C
(47°F)		 11°C
(52°F)
Minimum 7°C
(44°F)		 7°C
(46°F)		 3°C
(38°F)		 4°C
(39°F)		 -2°C
(29°F)		 -5°C
(24°F)		 -5°C
(24°F)		 -5°C
(23°F)		 -2°C
(29°F)		 -0°C
(32°F)		 6°C
(43°F)		 10°C
(50°F)

Compare climate in San Luis with other places

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

Monthly average precipitation in San Luis, Argentina §

San Luis usually has the most precipitation in January, February and April, with an average of 8 rainy days and 81 mm (3.2 inches) of precipitation per month.The driest months in San Luis are June, July and August. On average, 9 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Luis, Argentina.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 92 (3.6) 79 (3.1) 60 (2.4) 72 (2.8) 32 (1.2) 13 (0.5) 9 (0.4) 4 (0.2) 21 (0.8) 32 (1.2) 71 (2.8) 63 (2.5)
Average precipitation days (≥ 1 mm) 10 10 9 6 4 3 2 0 3 7 9 9

Monthly sunshine hours in San Luis, Argentina §

The sunniest months in San Luis are October, November and December, when the sun shines an average of 11 hours 49 minutes a day.Least sunny months in San Luis: April, May and June receive an average of 8 hours 36 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Luis, Argentina.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 310 329 332 270 255 257 271 309 307 343 358 385
Mean daily daylight hours 14h 3m 13h 14m 12h 14m 11h 12m 10h 22m 9h 58m 10h 11m 10h 55m 11h 54m 12h 55m 13h 50m 14h 18m

Solar UV radiation in San Luis, Argentina §

San Luis 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 exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly San Luis UV Index data.

Average daily maximum UV levels by month for San Luis, Argentina.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 15 13 11 8 5 4 4 6 8 11 14 15