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Monthly climate in San Isidro, Buenos Aires, Argentina

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification San Isidro features a humid subtropical climate (Cfa).Temperatures typically range between 11 °C (52 °F) and 25 °C (77 °F) through the year, but rarely can drop to 1 °C (34 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 896 mm (35.3 inches) and receives 89 rainy days on the 1 mm (0.04 inches) threshold annually.San Isidro enjoys an average of 3395 hours of sunshine throughout the year, and daylight varies from 9 hours 51 minutes to 14 hours 24 minutes per day.

Monthly average temperatures in San Isidro, Buenos Aires, Argentina §

The warmest months in San Isidro are January, February and December, with daily mean temperatures ranging from 23 to 25 °C (73 - 77 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 11 to 12 °C (52 - 55 °F) throughout the day. On average each year, San Isidro experiences 91 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 San Isidro, Buenos Aires, 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 37°C
(99°F)		 33°C
(92°F)		 32°C
(89°F)		 29°C
(84°F)		 25°C
(77°F)		 23°C
(74°F)		 23°C
(74°F)		 24°C
(75°F)		 27°C
(81°F)		 30°C
(87°F)		 33°C
(91°F)		 34°C
(94°F)
Mean maximum 34°C
(93°F)		 32°C
(90°F)		 30°C
(87°F)		 27°C
(81°F)		 23°C
(74°F)		 19°C
(66°F)		 21°C
(70°F)		 22°C
(72°F)		 25°C
(76°F)		 27°C
(81°F)		 31°C
(88°F)		 32°C
(90°F)
Average high 28°C
(83°F)		 27°C
(81°F)		 25°C
(77°F)		 22°C
(72°F)		 18°C
(65°F)		 15°C
(60°F)		 14°C
(57°F)		 16°C
(61°F)		 18°C
(64°F)		 20°C
(69°F)		 24°C
(76°F)		 26°C
(80°F)
Daily mean 25°C
(77°F)		 23°C
(75°F)		 22°C
(71°F)		 19°C
(66°F)		 15°C
(59°F)		 12°C
(54°F)		 11°C
(52°F)		 12°C
(55°F)		 15°C
(59°F)		 17°C
(63°F)		 21°C
(69°F)		 23°C
(73°F)
Average low 21°C
(71°F)		 20°C
(68°F)		 18°C
(65°F)		 16°C
(61°F)		 12°C
(54°F)		 10°C
(50°F)		 8°C
(47°F)		 9°C
(49°F)		 12°C
(54°F)		 14°C
(57°F)		 17°C
(63°F)		 19°C
(67°F)
Mean minimum 15°C
(60°F)		 14°C
(57°F)		 13°C
(55°F)		 11°C
(51°F)		 7°C
(44°F)		 3°C
(38°F)		 2°C
(36°F)		 4°C
(39°F)		 7°C
(44°F)		 8°C
(47°F)		 11°C
(52°F)		 13°C
(56°F)
Minimum 14°C
(58°F)		 13°C
(55°F)		 10°C
(51°F)		 6°C
(44°F)		 4°C
(39°F)		 1°C
(35°F)		 1°C
(34°F)		 2°C
(36°F)		 3°C
(38°F)		 7°C
(45°F)		 9°C
(49°F)		 10°C
(50°F)

Compare climate in San Isidro with other places

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

Monthly average precipitation in San Isidro, Buenos Aires, Argentina §

San Isidro usually has the most precipitation in April, September and October, with an average of 8 rainy days and 91 mm (3.6 inches) of precipitation per month.The driest months in San Isidro are January, June and August. On average, 59 mm (2.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Isidro, Buenos Aires, 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) 59 (2.3) 72 (2.9) 77 (3.0) 82 (3.2) 80 (3.2) 66 (2.6) 75 (3.0) 51 (2.0) 86 (3.4) 103 (4.1) 77 (3.0) 66 (2.6)
Average precipitation days (≥ 1 mm) 6 8 8 8 7 8 8 5 6 10 8 7

Monthly sunshine hours in San Isidro, Buenos Aires, Argentina §

The sunniest months in San Isidro are February, November and December, when the sun shines an average of 11 hours 36 minutes a day.Least sunny months in San Isidro: May, June and July receive an average of 7 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Isidro, Buenos Aires, 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 298 320 312 259 231 218 210 262 256 301 340 382
Mean daily daylight hours 14h 8m 13h 18m 12h 14m 11h 10m 10h 17m 9h 51m 10h 5m 10h 52m 11h 53m 12h 58m 13h 55m 14h 24m

Solar UV radiation in San Isidro, Buenos Aires, Argentina §

San Isidro experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 13 - 14, 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 Isidro UV Index data.

Average daily maximum UV levels by month for San Isidro, Buenos Aires, 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) 14 13 11 7 5 4 4 6 8 10 13 14