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Monthly climate in San Jacinto, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Jacinto features a hot desert climate (BWh). Temperatures typically range between 15 °C (59 °F) and 28 °C (83 °F) through the year, but rarely can drop to -2 °C (28 °F) or can rise to as high as 40 °C (104 °F). The average annual precipitation amounts to about 251 mm (9.9 inches) and receives 38 rainy days on the 1 mm (0.04 inches) threshold annually. San Jacinto enjoys an average of 3632 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 San Jacinto, Mexico

The warmest months in San Jacinto are May, June and August, with daily mean temperatures ranging from 27 to 28 °C (81 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 15 to 18 °C (59 - 65 °F) throughout the day. On average each year, San Jacinto experiences 252 days above 25 °C (77.0 °F) and 1 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 Jacinto. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum30°C
(86°F)		35°C
(96°F)		38°C
(101°F)		37°C
(99°F)		40°C
(104°F)		40°C
(104°F)		37°C
(99°F)		36°C
(97°F)		37°C
(99°F)		36°C
(97°F)		33°C
(91°F)		30°C
(87°F)
Mean maximum28°C
(83°F)		32°C
(90°F)		35°C
(95°F)		36°C
(97°F)		38°C
(101°F)		38°C
(101°F)		36°C
(97°F)		35°C
(96°F)		35°C
(95°F)		33°C
(92°F)		30°C
(87°F)		28°C
(83°F)
Average high21°C
(71°F)		25°C
(78°F)		29°C
(84°F)		32°C
(90°F)		34°C
(94°F)		34°C
(93°F)		32°C
(90°F)		32°C
(91°F)		30°C
(86°F)		28°C
(83°F)		25°C
(77°F)		22°C
(72°F)
Daily mean15°C
(59°F)		18°C
(65°F)		21°C
(71°F)		25°C
(77°F)		28°C
(82°F)		28°C
(83°F)		27°C
(81°F)		27°C
(81°F)		25°C
(76°F)		23°C
(73°F)		19°C
(66°F)		15°C
(60°F)
Average low8°C
(47°F)		12°C
(53°F)		14°C
(58°F)		17°C
(63°F)		20°C
(69°F)		22°C
(71°F)		22°C
(71°F)		22°C
(71°F)		20°C
(68°F)		17°C
(63°F)		13°C
(55°F)		9°C
(49°F)
Mean minimum1°C
(35°F)		4°C
(40°F)		8°C
(46°F)		10°C
(51°F)		15°C
(60°F)		19°C
(66°F)		19°C
(66°F)		19°C
(66°F)		17°C
(62°F)		10°C
(50°F)		6°C
(42°F)		1°C
(35°F)
Minimum-1°C
(30°F)		-0°C
(31°F)		5°C
(42°F)		9°C
(49°F)		13°C
(56°F)		15°C
(59°F)		18°C
(65°F)		16°C
(61°F)		15°C
(60°F)		8°C
(47°F)		-2°C
(28°F)		-2°C
(28°F)

Compare climate in San Jacinto with other places

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

Monthly average precipitation in San Jacinto, Mexico

San Jacinto usually has the most precipitation in July, September and October, with an average of 7 rainy days and 49 mm (1.9 inches) of precipitation per month. The driest months in San Jacinto are January, February and April. On average, 5 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Jacinto. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)6 (0.2)6 (0.2)9 (0.3)3 (0.1)7 (0.3)24 (0.9)49 (1.9)32 (1.2)61 (2.4)37 (1.4)6 (0.2)13 (0.5)
Average precipitation days (≥ 1 mm)011114859512

Monthly sunshine hours in San Jacinto, Mexico

The sunniest months in San Jacinto are May, June and July, when the sun shines an average of 11 hours 31 minutes a day. Least sunny months in San Jacinto: January, February and November receive an average of 8 hours 18 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Jacinto. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours217260308323353349356343293285269271
Mean daily daylight hours10h 44m11h 17m12h 1m12h 46m13h 23m13h 41m13h 31m12h 58m12h 15m11h 31m10h 52m10h 33m

Solar UV radiation in San Jacinto, Mexico

San Jacinto 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 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 San Jacinto UV Index data.

Average daily maximum UV levels by month for San Jacinto. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)710121413131313131187