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Monthly climate in Guanajuato, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Guanajuato features a humid subtropical climate (Cwa). Temperatures typically range between 14 °C (58 °F) and 22 °C (73 °F) through the year, but rarely can drop to 0 °C (33 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 808 mm (31.8 inches) and receives 93 rainy days on the 1 mm (0.04 inches) threshold annually. Guanajuato enjoys an average of 3612 hours of sunshine throughout the year, and daylight varies from 10 hours 52 minutes to 13 hours 22 minutes per day.

Monthly average temperatures in Guanajuato, Mexico

The warmest months in Guanajuato are April, May and June, with daily mean temperatures ranging from 21 to 22 °C (70 - 73 °F) throughout the day. The coldest temperatures usually occur in January, November and December, when daily mean temperatures range from 14 to 16 °C (58 - 61 °F) throughout the day. On average each year, Guanajuato experiences 195 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
Maximum28°C
(83°F)		30°C
(87°F)		32°C
(90°F)		34°C
(94°F)		35°C
(96°F)		35°C
(95°F)		31°C
(88°F)		30°C
(87°F)		29°C
(85°F)		31°C
(87°F)		30°C
(86°F)		27°C
(82°F)
Mean maximum26°C
(79°F)		29°C
(84°F)		31°C
(88°F)		32°C
(90°F)		33°C
(92°F)		32°C
(90°F)		29°C
(85°F)		29°C
(84°F)		28°C
(82°F)		28°C
(83°F)		28°C
(82°F)		26°C
(79°F)
Average high22°C
(73°F)		25°C
(77°F)		28°C
(82°F)		29°C
(85°F)		30°C
(86°F)		27°C
(82°F)		26°C
(78°F)		26°C
(79°F)		25°C
(77°F)		25°C
(77°F)		24°C
(76°F)		23°C
(73°F)
Daily mean14°C
(58°F)		17°C
(62°F)		19°C
(67°F)		21°C
(71°F)		22°C
(73°F)		21°C
(70°F)		19°C
(67°F)		20°C
(68°F)		19°C
(66°F)		18°C
(65°F)		16°C
(61°F)		14°C
(58°F)
Average low8°C
(46°F)		9°C
(49°F)		11°C
(53°F)		13°C
(56°F)		15°C
(59°F)		15°C
(60°F)		14°C
(58°F)		15°C
(59°F)		14°C
(58°F)		13°C
(55°F)		10°C
(50°F)		7°C
(45°F)
Mean minimum3°C
(37°F)		4°C
(40°F)		7°C
(46°F)		9°C
(49°F)		12°C
(54°F)		13°C
(56°F)		12°C
(54°F)		12°C
(54°F)		12°C
(53°F)		9°C
(48°F)		5°C
(41°F)		2°C
(36°F)
Minimum1°C
(34°F)		3°C
(38°F)		4°C
(40°F)		7°C
(44°F)		11°C
(51°F)		11°C
(52°F)		11°C
(53°F)		12°C
(54°F)		9°C
(48°F)		5°C
(42°F)		1°C
(34°F)		0°C
(33°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, July and September, with an average of 17 rainy days and 165 mm (6.5 inches) of precipitation per month. The driest months in Guanajuato are January, April and December. On average, 4 mm (0.2 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)4 (0.2)7 (0.3)11 (0.4)5 (0.2)46 (1.8)172 (6.8)164 (6.5)153 (6.0)160 (6.3)63 (2.5)19 (0.8)4 (0.2)
Average precipitation days (≥ 1 mm)1121815191718821

Monthly sunshine hours in Guanajuato, Mexico

The sunniest months in Guanajuato are May, July and August, when the sun shines an average of 10 hours 45 minutes a day. Least sunny months in Guanajuato: January, February and November receive an average of 8 hours 42 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 hours233269318323343319331325291289280286
Mean daily daylight hours11h 0m11h 27m12h 2m12h 37m13h 7m13h 22m13h 14m12h 47m12h 13m11h 37m11h 7m10h 52m

Solar UV radiation in Guanajuato, Mexico

Guanajuato experiences the highest level of ultraviolet (UV) radiation in April, May and September, when the maximum UV index can reach values of 14 - 15, 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)9111415151414141413108