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Monthly climate in San Simon, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Simon features a tropical savanna climate (Aw). Temperatures typically range between 19 °C (67 °F) and 26 °C (80 °F) through the year, but rarely can drop to 7 °C (45 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1829 mm (72.0 inches) and receives 151 rainy days on the 1 mm (0.04 inches) threshold annually. San Simon enjoys an average of 3530 hours of sunshine throughout the year, and daylight varies from 11 hours 0 minutes to 13 hours 13 minutes per day.

Monthly average temperatures in San Simon, Mexico

The warmest months in San Simon are March, April and May, with daily mean temperatures ranging from 24 to 26 °C (76 - 80 °F) throughout the day. The coldest temperatures usually occur in January, November and December, when daily mean temperatures range from 19 to 21 °C (67 - 69 °F) throughout the day. On average each year, San Simon experiences 320 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 Simon. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum32°C
(89°F)		33°C
(92°F)		35°C
(95°F)		36°C
(97°F)		37°C
(99°F)		34°C
(94°F)		32°C
(91°F)		30°C
(87°F)		30°C
(86°F)		30°C
(86°F)		31°C
(88°F)		30°C
(87°F)
Mean maximum30°C
(87°F)		33°C
(91°F)		34°C
(94°F)		36°C
(96°F)		36°C
(97°F)		32°C
(90°F)		31°C
(88°F)		30°C
(86°F)		30°C
(85°F)		30°C
(85°F)		30°C
(85°F)		29°C
(85°F)
Average high28°C
(83°F)		30°C
(86°F)		32°C
(90°F)		33°C
(92°F)		33°C
(92°F)		29°C
(84°F)		28°C
(83°F)		27°C
(82°F)		27°C
(81°F)		27°C
(81°F)		27°C
(82°F)		27°C
(81°F)
Daily mean20°C
(68°F)		22°C
(71°F)		24°C
(76°F)		26°C
(79°F)		26°C
(80°F)		24°C
(75°F)		23°C
(73°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		21°C
(69°F)		19°C
(67°F)
Average low12°C
(54°F)		13°C
(56°F)		15°C
(60°F)		17°C
(63°F)		19°C
(66°F)		19°C
(67°F)		18°C
(65°F)		18°C
(65°F)		18°C
(65°F)		17°C
(63°F)		15°C
(58°F)		12°C
(54°F)
Mean minimum8°C
(47°F)		10°C
(50°F)		12°C
(55°F)		13°C
(56°F)		16°C
(60°F)		18°C
(65°F)		16°C
(61°F)		16°C
(61°F)		16°C
(61°F)		15°C
(59°F)		11°C
(52°F)		9°C
(48°F)
Minimum7°C
(45°F)		8°C
(46°F)		11°C
(52°F)		11°C
(53°F)		14°C
(58°F)		17°C
(63°F)		15°C
(59°F)		15°C
(60°F)		15°C
(59°F)		14°C
(57°F)		9°C
(48°F)		7°C
(45°F)

Compare climate in San Simon with other places

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

Monthly average precipitation in San Simon, Mexico

San Simon usually has the most precipitation in July, August and September, with an average of 29 rainy days and 395 mm (15.5 inches) of precipitation per month. The driest months in San Simon are January, March and April. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Simon. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)3 (0.1)5 (0.2)2 (0.1)1 (0.0)49 (1.9)275 (10.8)353 (13.9)426 (16.8)405 (16.0)250 (9.9)55 (2.2)4 (0.2)
Average precipitation days (≥ 1 mm)00005252930292481

Monthly sunshine hours in San Simon, Mexico

The sunniest months in San Simon are March, April and May, when the sun shines an average of 10 hours 40 minutes a day. Least sunny months in San Simon: January, February and September receive an average of 8 hours 51 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Simon. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours244280321324335285307289272285287296
Mean daily daylight hours11h 8m11h 31m12h 2m12h 34m13h 0m13h 13m13h 6m12h 43m12h 12m11h 41m11h 14m11h 0m

Solar UV radiation in San Simon, Mexico

San Simon experiences the highest level of ultraviolet (UV) radiation in April, August and September, when the maximum UV index can reach values of 13 - 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 9. For more detailed information, check out our hourly San Simon UV Index data.

Average daily maximum UV levels by month for San Simon. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)911131413131313141198