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Monthly climate in San Antonio, Chile

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Antonio features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 10 °C (50 °F) and 17 °C (62 °F) through the year, but rarely can drop to 1 °C (35 °F) or can rise to as high as 26 °C (80 °F). The average annual precipitation amounts to about 290 mm (11.4 inches) and receives 23 rainy days on the 1 mm (0.04 inches) threshold annually. San Antonio enjoys an average of 3736 hours of sunshine throughout the year, and daylight varies from 9 hours 56 minutes to 14 hours 19 minutes per day.

Monthly average temperatures in San Antonio, Chile

The warmest months in San Antonio are January, February and December, with daily mean temperatures ranging from 16 to 17 °C (61 - 62 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 10 to 11 °C (50 - 51 °F) throughout the day. On average each year, San Antonio experiences 1 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 Antonio. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum26°C
(80°F)		25°C
(77°F)		25°C
(78°F)		23°C
(74°F)		24°C
(75°F)		20°C
(68°F)		20°C
(68°F)		21°C
(71°F)		22°C
(72°F)		24°C
(76°F)		26°C
(79°F)		26°C
(78°F)
Mean maximum24°C
(76°F)		23°C
(74°F)		24°C
(75°F)		22°C
(71°F)		21°C
(70°F)		16°C
(62°F)		18°C
(65°F)		19°C
(66°F)		20°C
(69°F)		22°C
(72°F)		24°C
(76°F)		24°C
(75°F)
Average high20°C
(69°F)		20°C
(69°F)		20°C
(68°F)		18°C
(64°F)		16°C
(61°F)		14°C
(57°F)		14°C
(57°F)		14°C
(58°F)		15°C
(60°F)		17°C
(63°F)		19°C
(66°F)		20°C
(67°F)
Daily mean17°C
(62°F)		17°C
(62°F)		16°C
(60°F)		14°C
(57°F)		12°C
(54°F)		11°C
(51°F)		10°C
(50°F)		10°C
(51°F)		11°C
(53°F)		13°C
(55°F)		15°C
(59°F)		16°C
(61°F)
Average low13°C
(56°F)		13°C
(57°F)		12°C
(54°F)		10°C
(51°F)		9°C
(48°F)		7°C
(46°F)		7°C
(44°F)		7°C
(45°F)		8°C
(47°F)		9°C
(49°F)		11°C
(52°F)		12°C
(54°F)
Mean minimum11°C
(52°F)		12°C
(53°F)		9°C
(49°F)		8°C
(47°F)		5°C
(42°F)		3°C
(38°F)		3°C
(38°F)		4°C
(39°F)		5°C
(42°F)		6°C
(43°F)		9°C
(48°F)		10°C
(51°F)
Minimum10°C
(50°F)		11°C
(52°F)		8°C
(46°F)		7°C
(44°F)		2°C
(36°F)		1°C
(35°F)		2°C
(36°F)		3°C
(37°F)		5°C
(40°F)		5°C
(41°F)		8°C
(47°F)		9°C
(49°F)

Compare climate in San Antonio with other places

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

Monthly average precipitation in San Antonio, Chile

San Antonio usually has the most precipitation in May, June and July, with an average of 4 rainy days and 66 mm (2.6 inches) of precipitation per month. The driest months in San Antonio are March, November and December. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Antonio. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)6 (0.2)3 (0.1)3 (0.1)9 (0.4)43 (1.7)107 (4.2)47 (1.9)38 (1.5)16 (0.6)14 (0.6)3 (0.1)1 (0.0)
Average precipitation days (≥ 1 mm)000137442200

Monthly sunshine hours in San Antonio, Chile

The sunniest months in San Antonio are October, November and December, when the sun shines an average of 12 hours 16 minutes a day. Least sunny months in San Antonio: May, June and July receive an average of 7 hours 55 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Antonio. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours320338350292254219254274302353374399
Mean daily daylight hours14h 4m13h 15m12h 14m11h 12m10h 21m9h 56m10h 10m10h 55m11h 54m12h 56m13h 51m14h 19m

Solar UV radiation in San Antonio, Chile

San Antonio 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 Antonio UV Index data.

Average daily maximum UV levels by month for San Antonio. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)141311853468111314