nomadseason

Monthly climate in San Jeronimo, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Jeronimo features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 9 °C (48 °F) and 18 °C (64 °F) through the year, but rarely can drop to -7 °C (19 °F) or can rise to as high as 31 °C (87 °F). The average annual precipitation amounts to about 1373 mm (54.1 inches) and receives 140 rainy days on the 1 mm (0.04 inches) threshold annually. San Jeronimo enjoys an average of 3506 hours of sunshine throughout the year, and daylight varies from 10 hours 40 minutes to 13 hours 33 minutes per day.

Monthly average temperatures in San Jeronimo, Mexico

The warmest months in San Jeronimo are May, June and August, with daily mean temperatures ranging from 17 to 18 °C (62 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 9 to 10 °C (48 - 51 °F) throughout the day. On average each year, San Jeronimo experiences 35 days above 25 °C (77.0 °F) and 14 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 Jeronimo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum22°C
(72°F)		24°C
(76°F)		26°C
(80°F)		28°C
(83°F)		29°C
(84°F)		31°C
(87°F)		27°C
(81°F)		29°C
(84°F)		26°C
(80°F)		27°C
(81°F)		25°C
(78°F)		24°C
(75°F)
Mean maximum21°C
(70°F)		23°C
(74°F)		25°C
(77°F)		26°C
(80°F)		28°C
(82°F)		29°C
(84°F)		26°C
(78°F)		27°C
(81°F)		26°C
(78°F)		26°C
(79°F)		24°C
(75°F)		22°C
(72°F)
Average high17°C
(63°F)		18°C
(65°F)		21°C
(70°F)		23°C
(73°F)		24°C
(76°F)		24°C
(76°F)		22°C
(72°F)		23°C
(75°F)		22°C
(73°F)		23°C
(73°F)		21°C
(69°F)		17°C
(64°F)
Daily mean9°C
(48°F)		10°C
(51°F)		13°C
(55°F)		14°C
(58°F)		17°C
(62°F)		18°C
(64°F)		16°C
(62°F)		17°C
(63°F)		16°C
(62°F)		16°C
(60°F)		13°C
(55°F)		10°C
(49°F)
Average low2°C
(36°F)		3°C
(38°F)		4°C
(40°F)		6°C
(43°F)		8°C
(47°F)		12°C
(55°F)		12°C
(54°F)		13°C
(55°F)		12°C
(54°F)		10°C
(50°F)		6°C
(43°F)		3°C
(38°F)
Mean minimum-3°C
(27°F)		-2°C
(30°F)		0°C
(33°F)		1°C
(34°F)		4°C
(40°F)		9°C
(49°F)		10°C
(50°F)		11°C
(52°F)		9°C
(49°F)		5°C
(42°F)		0°C
(33°F)		-2°C
(28°F)
Minimum-7°C
(19°F)		-3°C
(27°F)		-1°C
(31°F)		-1°C
(31°F)		3°C
(37°F)		8°C
(46°F)		9°C
(49°F)		10°C
(50°F)		7°C
(46°F)		4°C
(40°F)		-3°C
(28°F)		-4°C
(24°F)

Compare climate in San Jeronimo with other places

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

Monthly average precipitation in San Jeronimo, Mexico

San Jeronimo usually has the most precipitation in July, August and September, with an average of 27 rainy days and 290 mm (11.4 inches) of precipitation per month. The driest months in San Jeronimo are March, April and May. On average, 16 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Jeronimo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)31 (1.2)45 (1.8)11 (0.4)8 (0.3)30 (1.2)170 (6.7)357 (14.0)272 (10.7)241 (9.5)117 (4.6)38 (1.5)52 (2.1)
Average precipitation days (≥ 1 mm)34216213027251155

Monthly sunshine hours in San Jeronimo, Mexico

The sunniest months in San Jeronimo are March, April and May, when the sun shines an average of 10 hours 57 minutes a day. Least sunny months in San Jeronimo: January, February and September receive an average of 8 hours 21 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Jeronimo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours225263319330357318291293263288277277
Mean daily daylight hours10h 50m11h 21m12h 1m12h 43m13h 17m13h 33m13h 24m12h 54m12h 14m11h 33m10h 58m10h 40m

Solar UV radiation in San Jeronimo, Mexico

San Jeronimo experiences the highest level of ultraviolet (UV) radiation in April, May 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 9. For more detailed information, check out our hourly San Jeronimo UV Index data.

Average daily maximum UV levels by month for San Jeronimo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)811121414131313131297