Mexico - weather in July

July is the central month of summer in the Northern Hemisphere, and in Mexico, a very extensive country crossed by the Tropic of Cancer in the central part, it is a hot, muggy and rainy month in the center-south, very hot and sunny in the north, with possible thunderstorms in inland areas.
At low altitudes, the temperature is warm, and not too hot, only on the north-west coast, exposed to the Pacific, where a cold current flows (see Tijuana, Ensenada). Instead, in the south, in the tierras frìas (see Mexico City), the temperature is not too high because it is mitigated by the altitude.
In the rest of the country, July is a hot month, and in Mexico it is on average the hottest of the year together with August.
Especially in inland areas and at low altitudes, heat waves can occur, during which the temperature can reach and exceed 40 °C (104 °F). In particular, in the central-northern inland areas (see Hermosillo) and in the north-west, in the Yuma desert (see Mexicali), extremely high temperatures can be reached, even more than 45 °C (113 °F).
The rains are very rare or completely absent in the northwest, in Baja California. On the other hand, in the Sierra Madre Occidental and in the Chihuahua desert, even though the rains are quite rare, thunderstorms can form, brought by humid air coming from the Pacific Ocean ("North American monsoon").
On the coast of the Gulf of Mexico, the rains are quite rare in the northern part, on the border with Texas (see Matamoros), moderately abundant in the central part (see Tampico), and decidedly abundant in the southern part (see Veracruz). Actually, in the south, the rains are abundant everywhere.
From June to November is the season of hurricanes, which mainly affect the coasts of the Gulf of Mexico and the southern Pacific coast, but sometimes they can also affect the north-west, i.e. the California peninsula, or they can penetrate inland. However, hurricanes are still quite rare in July, and will become more probable in the following months, and in particular, from August to October.
Mexico is located at fairly low latitudes, however, in July the day is quite long, about 14 hours in the north and 13 in the south.

The sea is warm enough for swimming everywhere, except in the north-central part of the Pacific coast (see Tijuana, Ensenada, Guerrero Negro), where it is very cool or cold due to the already mentioned cold current.




See also: Mexico, the weather in June - August
The climate of Mexico