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Monthly climate in Santiago, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Santiago features a hot semi-arid climate (BSh). Temperatures typically range between 11 °C (53 °F) and 24 °C (75 °F) through the year, but rarely can drop to -7 °C (20 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 1212 mm (47.7 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually. Santiago enjoys an average of 3529 hours of sunshine throughout the year, and daylight varies from 10 hours 33 minutes to 13 hours 41 minutes per day.

Monthly average temperatures in Santiago, Mexico

The warmest months in Santiago are June, July and August, with daily mean temperatures ranging from 23 to 24 °C (74 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 11 to 14 °C (53 - 57 °F) throughout the day. On average each year, Santiago experiences 160 days above 25 °C (77.0 °F) and 3 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Santiago. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(83°F)		31°C
(87°F)		31°C
(88°F)		33°C
(92°F)		33°C
(92°F)		34°C
(94°F)		33°C
(91°F)		32°C
(90°F)		31°C
(89°F)		31°C
(89°F)		28°C
(83°F)		29°C
(84°F)
Mean maximum26°C
(79°F)		28°C
(82°F)		29°C
(85°F)		31°C
(89°F)		31°C
(89°F)		32°C
(90°F)		32°C
(89°F)		31°C
(88°F)		30°C
(87°F)		29°C
(85°F)		27°C
(80°F)		27°C
(80°F)
Average high17°C
(63°F)		20°C
(68°F)		22°C
(72°F)		25°C
(77°F)		27°C
(80°F)		28°C
(83°F)		28°C
(83°F)		29°C
(84°F)		26°C
(79°F)		24°C
(76°F)		21°C
(69°F)		19°C
(66°F)
Daily mean11°C
(53°F)		14°C
(57°F)		17°C
(62°F)		19°C
(67°F)		22°C
(72°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		22°C
(71°F)		19°C
(66°F)		15°C
(59°F)		13°C
(55°F)
Average low7°C
(44°F)		8°C
(47°F)		11°C
(53°F)		14°C
(57°F)		17°C
(63°F)		18°C
(65°F)		18°C
(65°F)		18°C
(65°F)		18°C
(64°F)		14°C
(58°F)		10°C
(51°F)		8°C
(46°F)
Mean minimum-0°C
(32°F)		1°C
(35°F)		5°C
(41°F)		7°C
(45°F)		13°C
(55°F)		16°C
(61°F)		16°C
(62°F)		16°C
(62°F)		15°C
(59°F)		7°C
(45°F)		3°C
(38°F)		0°C
(32°F)
Minimum-3°C
(26°F)		-3°C
(27°F)		1°C
(34°F)		5°C
(41°F)		9°C
(49°F)		14°C
(57°F)		16°C
(60°F)		16°C
(61°F)		13°C
(56°F)		5°C
(41°F)		-3°C
(28°F)		-7°C
(20°F)

Compare climate in Santiago with other places

Compare temperature, precipitation, sunshine, UV index in Santiago, Mexico with other places around the world.

Monthly average precipitation in Santiago, Mexico

Santiago usually has the most precipitation in April, May and September, with an average of 17 rainy days and 190 mm (7.5 inches) of precipitation per month. The driest months in Santiago are January, August and December. On average, 42 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Santiago. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)45 (1.8)78 (3.1)98 (3.9)187 (7.4)193 (7.6)93 (3.7)120 (4.7)30 (1.2)191 (7.5)73 (2.9)54 (2.1)50 (2.0)
Average precipitation days (≥ 1 mm)61114151912116181186

Monthly sunshine hours in Santiago, Mexico

The sunniest months in Santiago are June, July and August, when the sun shines an average of 11 hours 10 minutes a day. Least sunny months in Santiago: January, February and November receive an average of 8 hours 5 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Santiago. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours207254294302335342339346282292264266
Mean daily daylight hours10h 43m11h 17m12h 1m12h 46m13h 23m13h 41m13h 31m12h 58m12h 15m11h 30m10h 52m10h 33m

Solar UV radiation in Santiago, Mexico

Santiago experiences the highest level of ultraviolet (UV) radiation in April, May and July, when the maximum UV index can reach values of 13 - 13, which corresponds to the Extreme category of sun exposure. January, November and December are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Santiago UV Index data.

Average daily maximum UV levels by month for Santiago. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)79111313131312121186