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Monthly climate in Primero de Mayo, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Primero de Mayo features a hot semi-arid climate (BSh). Temperatures typically range between 14 °C (58 °F) and 32 °C (89 °F) through the year, but rarely can drop to -7 °C (19 °F) or can rise to as high as 44 °C (111 °F). The average annual precipitation amounts to about 355 mm (14.0 inches) and receives 56 rainy days on the 1 mm (0.04 inches) threshold annually. Primero de Mayo enjoys an average of 3423 hours of sunshine throughout the year, and daylight varies from 10 hours 26 minutes to 13 hours 49 minutes per day.

Monthly average temperatures in Primero de Mayo, Mexico

The warmest months in Primero de Mayo are June, July and August, with daily mean temperatures ranging from 31 to 32 °C (88 - 89 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 14 to 17 °C (58 - 63 °F) throughout the day. On average each year, Primero de Mayo experiences 249 days above 25 °C (77.0 °F) and 2 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Primero de Mayo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum34°C
(94°F)		36°C
(98°F)		39°C
(102°F)		41°C
(107°F)		44°C
(111°F)		44°C
(111°F)		43°C
(110°F)		42°C
(107°F)		42°C
(108°F)		41°C
(105°F)		34°C
(94°F)		36°C
(96°F)
Mean maximum31°C
(88°F)		35°C
(95°F)		37°C
(99°F)		40°C
(105°F)		42°C
(107°F)		42°C
(108°F)		41°C
(106°F)		40°C
(105°F)		39°C
(103°F)		37°C
(99°F)		33°C
(91°F)		32°C
(89°F)
Average high21°C
(70°F)		24°C
(76°F)		29°C
(84°F)		32°C
(91°F)		36°C
(96°F)		37°C
(99°F)		37°C
(99°F)		37°C
(99°F)		33°C
(92°F)		30°C
(86°F)		25°C
(77°F)		22°C
(73°F)
Daily mean14°C
(58°F)		17°C
(63°F)		22°C
(71°F)		25°C
(78°F)		29°C
(84°F)		31°C
(88°F)		31°C
(89°F)		32°C
(89°F)		28°C
(83°F)		24°C
(75°F)		19°C
(66°F)		16°C
(60°F)
Average low8°C
(47°F)		11°C
(51°F)		16°C
(61°F)		19°C
(67°F)		23°C
(74°F)		25°C
(78°F)		26°C
(79°F)		26°C
(79°F)		24°C
(75°F)		18°C
(66°F)		13°C
(56°F)		10°C
(50°F)
Mean minimum1°C
(35°F)		2°C
(36°F)		9°C
(48°F)		12°C
(53°F)		17°C
(63°F)		22°C
(72°F)		23°C
(74°F)		23°C
(74°F)		19°C
(66°F)		8°C
(47°F)		6°C
(43°F)		2°C
(36°F)
Minimum-2°C
(28°F)		-7°C
(19°F)		4°C
(40°F)		9°C
(48°F)		14°C
(58°F)		20°C
(68°F)		23°C
(73°F)		22°C
(72°F)		15°C
(60°F)		6°C
(42°F)		1°C
(34°F)		1°C
(33°F)

Compare climate in Primero de Mayo with other places

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

Monthly average precipitation in Primero de Mayo, Mexico

Primero de Mayo usually has the most precipitation in July, September and October, with an average of 7 rainy days and 62 mm (2.4 inches) of precipitation per month. The driest months in Primero de Mayo are January, February and March. On average, 9 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Primero de Mayo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)8 (0.3)8 (0.3)12 (0.5)15 (0.6)40 (1.6)28 (1.1)47 (1.8)29 (1.1)97 (3.8)41 (1.6)15 (0.6)16 (0.6)
Average precipitation days (≥ 1 mm)2233977310532

Monthly sunshine hours in Primero de Mayo, Mexico

The sunniest months in Primero de Mayo are June, July and August, when the sun shines an average of 11 hours 14 minutes a day. Least sunny months in Primero de Mayo: January, February and November receive an average of 7 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Primero de Mayo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours197244277292323341349343282269245255
Mean daily daylight hours10h 37m11h 14m12h 0m12h 49m13h 29m13h 49m13h 38m13h 2m12h 16m11h 28m10h 47m10h 26m

Solar UV radiation in Primero de Mayo, Mexico

Primero de Mayo experiences the highest level of ultraviolet (UV) radiation in April, May and August, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure. January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Primero de Mayo UV Index data.

Average daily maximum UV levels by month for Primero de Mayo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)6910121212121211975