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Monthly climate in Santiago, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Santiago features a hot desert climate (BWh). Temperatures typically range between 17 °C (63 °F) and 28 °C (84 °F) through the year, but rarely can drop to 6 °C (43 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 510 mm (20.1 inches) and receives 55 rainy days on the 1 mm (0.04 inches) threshold annually. Santiago enjoys an average of 3640 hours of sunshine throughout the year, and daylight varies from 10 hours 42 minutes to 13 hours 32 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 28 to 28 °C (83 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 17 to 18 °C (63 - 65 °F) throughout the day. On average each year, Santiago experiences 286 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 Santiago. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum30°C
(87°F)		32°C
(90°F)		33°C
(93°F)		35°C
(96°F)		37°C
(99°F)		38°C
(101°F)		38°C
(101°F)		37°C
(100°F)		35°C
(95°F)		36°C
(97°F)		34°C
(93°F)		29°C
(85°F)
Mean maximum29°C
(85°F)		30°C
(87°F)		32°C
(90°F)		35°C
(94°F)		36°C
(96°F)		36°C
(98°F)		37°C
(99°F)		36°C
(97°F)		34°C
(93°F)		34°C
(94°F)		33°C
(91°F)		29°C
(84°F)
Average high25°C
(77°F)		25°C
(78°F)		28°C
(83°F)		30°C
(87°F)		32°C
(90°F)		34°C
(93°F)		33°C
(92°F)		33°C
(91°F)		31°C
(88°F)		31°C
(89°F)		29°C
(84°F)		25°C
(78°F)
Daily mean17°C
(63°F)		18°C
(65°F)		20°C
(69°F)		23°C
(73°F)		25°C
(77°F)		28°C
(83°F)		28°C
(84°F)		28°C
(83°F)		26°C
(80°F)		25°C
(78°F)		22°C
(72°F)		18°C
(65°F)
Average low11°C
(52°F)		12°C
(53°F)		13°C
(55°F)		15°C
(59°F)		17°C
(64°F)		22°C
(72°F)		24°C
(75°F)		24°C
(75°F)		23°C
(73°F)		20°C
(69°F)		16°C
(62°F)		13°C
(55°F)
Mean minimum7°C
(45°F)		8°C
(46°F)		9°C
(49°F)		11°C
(52°F)		14°C
(57°F)		18°C
(65°F)		22°C
(72°F)		22°C
(73°F)		20°C
(69°F)		14°C
(58°F)		12°C
(54°F)		9°C
(48°F)
Minimum6°C
(44°F)		6°C
(43°F)		8°C
(46°F)		10°C
(50°F)		12°C
(54°F)		16°C
(60°F)		20°C
(69°F)		22°C
(71°F)		19°C
(67°F)		13°C
(56°F)		11°C
(53°F)		8°C
(46°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 July, August and September, with an average of 14 rainy days and 133 mm (5.2 inches) of precipitation per month. The driest months in Santiago are March, April and May. On average, 1 mm (0.0 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)10 (0.4)14 (0.6)2 (0.1)1 (0.0)0 (0.0)22 (0.9)93 (3.7)131 (5.2)175 (6.9)25 (1.0)24 (0.9)14 (0.5)
Average precipitation days (≥ 1 mm)110001121616521

Monthly sunshine hours in Santiago, Mexico

The sunniest months in Santiago are May, June and July, when the sun shines an average of 11 hours 27 minutes a day. Least sunny months in Santiago: January, February and December receive an average of 8 hours 16 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 hours224258311323357346350324294303276270
Mean daily daylight hours10h 51m11h 22m12h 1m12h 42m13h 16m13h 32m13h 23m12h 53m12h 14m11h 34m10h 59m10h 42m

Solar UV radiation in Santiago, Mexico

Santiago experiences the highest level of ultraviolet (UV) radiation in April, May and June, 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)710111313131212121186