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Monthly climate in Petacalco, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Petacalco features a tropical savanna climate (Aw). Temperatures typically range between 25 °C (77 °F) and 28 °C (83 °F) through the year, but rarely can drop to 17 °C (63 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 1105 mm (43.5 inches) and receives 102 rainy days on the 1 mm (0.04 inches) threshold annually. Petacalco enjoys an average of 3459 hours of sunshine throughout the year, and daylight varies from 11 hours 3 minutes to 13 hours 10 minutes per day.

Monthly average temperatures in Petacalco, Mexico

The warmest months in Petacalco are June, July and August, with daily mean temperatures ranging from 27 to 28 °C (81 - 83 °F) throughout the day. The coldest temperatures usually occur in February, March and April, when daily mean temperatures range from 25 to 25 °C (77 - 78 °F) throughout the day. On average each year, Petacalco experiences 328 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 Petacalco. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum33°C
(91°F)		33°C
(92°F)		33°C
(91°F)		33°C
(92°F)		34°C
(94°F)		35°C
(95°F)		35°C
(95°F)		34°C
(93°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		32°C
(91°F)
Mean maximum32°C
(90°F)		32°C
(89°F)		31°C
(88°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		34°C
(93°F)		33°C
(92°F)		32°C
(90°F)		32°C
(90°F)		33°C
(91°F)		32°C
(89°F)
Average high29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		30°C
(87°F)		30°C
(87°F)		32°C
(89°F)		30°C
(87°F)		30°C
(86°F)		30°C
(86°F)		30°C
(87°F)		30°C
(85°F)
Daily mean25°C
(78°F)		25°C
(77°F)		25°C
(78°F)		25°C
(78°F)		26°C
(80°F)		27°C
(81°F)		28°C
(83°F)		28°C
(82°F)		27°C
(81°F)		27°C
(81°F)		27°C
(80°F)		26°C
(78°F)
Average low22°C
(72°F)		22°C
(71°F)		22°C
(71°F)		22°C
(71°F)		23°C
(74°F)		25°C
(77°F)		26°C
(78°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		24°C
(75°F)		23°C
(73°F)
Mean minimum20°C
(68°F)		20°C
(68°F)		20°C
(68°F)		20°C
(68°F)		21°C
(70°F)		23°C
(74°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		24°C
(75°F)		22°C
(72°F)		20°C
(69°F)
Minimum18°C
(65°F)		17°C
(63°F)		19°C
(66°F)		18°C
(65°F)		20°C
(68°F)		21°C
(71°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		23°C
(74°F)		20°C
(69°F)		20°C
(68°F)

Compare climate in Petacalco with other places

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

Monthly average precipitation in Petacalco, Mexico

Petacalco usually has the most precipitation in August, September and October, with an average of 20 rainy days and 250 mm (9.8 inches) of precipitation per month. The driest months in Petacalco are February, March and April. On average, 1 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Petacalco. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)4 (0.2)2 (0.1)1 (0.0)0 (0.0)7 (0.3)188 (7.4)102 (4.0)250 (9.9)265 (10.4)234 (9.2)47 (1.8)4 (0.2)
Average precipitation days (≥ 1 mm)00001151721202170

Monthly sunshine hours in Petacalco, Mexico

The sunniest months in Petacalco are March, April and May, when the sun shines an average of 10 hours 33 minutes a day. Least sunny months in Petacalco: January, August and September receive an average of 8 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Petacalco. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours238274318320332285308272264273279291
Mean daily daylight hours11h 10m11h 32m12h 2m12h 33m12h 58m13h 10m13h 3m12h 41m12h 12m11h 42m11h 16m11h 3m

Solar UV radiation in Petacalco, Mexico

Petacalco experiences the highest level of ultraviolet (UV) radiation in April, June 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 Petacalco UV Index data.

Average daily maximum UV levels by month for Petacalco. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)911131313141312131198