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Monthly climate in Guanajuato, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Guanajuato features a tropical savanna climate (Aw). Temperatures typically range between 24 °C (75 °F) and 26 °C (79 °F) through the year, but rarely can drop to 14 °C (57 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 1948 mm (76.7 inches) and receives 180 rainy days on the 1 mm (0.04 inches) threshold annually. Guanajuato enjoys an average of 3585 hours of sunshine throughout the year, and daylight varies from 11 hours 11 minutes to 13 hours 2 minutes per day.

Monthly average temperatures in Guanajuato, Mexico

The warmest months in Guanajuato are April, May and July, with daily mean temperatures ranging from 26 to 26 °C (78 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 24 to 25 °C (75 - 77 °F) throughout the day. On average each year, Guanajuato experiences 328 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 Guanajuato. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum34°C
(93°F)		34°C
(93°F)		35°C
(95°F)		35°C
(96°F)		35°C
(95°F)		33°C
(92°F)		33°C
(91°F)		33°C
(91°F)		32°C
(89°F)		33°C
(91°F)		33°C
(92°F)		33°C
(91°F)
Mean maximum32°C
(90°F)		33°C
(93°F)		34°C
(93°F)		34°C
(94°F)		33°C
(92°F)		31°C
(87°F)		33°C
(91°F)		32°C
(90°F)		31°C
(89°F)		32°C
(89°F)		32°C
(90°F)		32°C
(90°F)
Average high30°C
(87°F)		31°C
(88°F)		32°C
(90°F)		32°C
(90°F)		31°C
(88°F)		29°C
(85°F)		30°C
(87°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		30°C
(87°F)		30°C
(87°F)
Daily mean24°C
(75°F)		25°C
(77°F)		26°C
(78°F)		26°C
(79°F)		26°C
(79°F)		25°C
(78°F)		26°C
(78°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		24°C
(76°F)
Average low19°C
(66°F)		19°C
(67°F)		20°C
(69°F)		21°C
(70°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		22°C
(71°F)		22°C
(72°F)		21°C
(70°F)		19°C
(67°F)
Mean minimum16°C
(61°F)		16°C
(62°F)		18°C
(65°F)		19°C
(66°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		21°C
(69°F)		20°C
(69°F)		20°C
(69°F)		18°C
(65°F)		16°C
(62°F)
Minimum14°C
(57°F)		14°C
(58°F)		18°C
(64°F)		18°C
(64°F)		21°C
(69°F)		20°C
(68°F)		20°C
(69°F)		20°C
(68°F)		20°C
(69°F)		20°C
(68°F)		17°C
(63°F)		16°C
(60°F)

Compare climate in Guanajuato with other places

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

Monthly average precipitation in Guanajuato, Mexico

Guanajuato usually has the most precipitation in June, August and September, with an average of 27 rainy days and 358 mm (14.1 inches) of precipitation per month. The driest months in Guanajuato are January, February and December. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Guanajuato. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)3 (0.1)3 (0.1)11 (0.4)39 (1.5)176 (6.9)327 (12.9)277 (10.9)355 (14.0)391 (15.4)323 (12.7)38 (1.5)4 (0.2)
Average precipitation days (≥ 1 mm)002724262928272782

Monthly sunshine hours in Guanajuato, Mexico

The sunniest months in Guanajuato are March, May and July, when the sun shines an average of 10 hours 19 minutes a day. Least sunny months in Guanajuato: January, February and June receive an average of 8 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Guanajuato. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours249282321315316275322301288289309314
Mean daily daylight hours11h 17m11h 37m12h 2m12h 29m12h 51m13h 2m12h 56m12h 36m12h 11m11h 45m11h 22m11h 11m

Solar UV radiation in Guanajuato, Mexico

Guanajuato experiences the highest level of ultraviolet (UV) radiation in April, May and July, when the maximum UV index can reach values of 14 - 14, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 10. For more detailed information, check out our hourly Guanajuato UV Index data.

Average daily maximum UV levels by month for Guanajuato. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)10121314141414131312109