Two well differenced seasons can be noticed in Mexico: the dry season (from late November to early June) that is also the high tourist season, and the rainy season (from June to November), showing torrential though brief rainfalls which mainly take place by the afternoons.
Within Mexico City the weather is dry and mild. Mornings and nights are usually fresh, unlike the afternoons which are usually warmer. Mornings and nights use to be fresh, unlike afternoons when temperatures rise to warmer degrees. Average temperatures between December and March is 20° C, while during the warmer months (April and March) thermometers can go up to 31° C. Afternoon rains usually pour during July and August, they can happen to fall every single day but will rarely last for more than two hours.
On the other hand, the arid and very large Baja California (1.300 kilometres) shows a warm weather around the area of the restless City of Tijuana. Mexicali is very hot indeed, alike La Paz and San Lucas Cape, but humidity rates are higher in the latter cities.
By general rule, in the California Peninsula rainfalls are scarce and few between September and March, although high temperatures predominate in this area, eventually reaching 48°C.
Around the northern territories of Mexico temperatures are quite severe. The vast flatlands framed by the peaks of the Occidental and Oriental Sierra Madre Ridge are arid and hot, showing some very high temperatures during summer (late June to early November), when thermometers can easily get to show numbers above 38° C.
Weather conditions can utterly vary within the mountainous areas of northern Mexico, where winter seasons are very cold (late December to early March), usually freezing during the night time.
In the Pacific Coastline, summer temperatures borders 35° C around the southern areas (Mazatlán or Puerto Vallarta) and 30° C in the northern areas (Guaymas). On winter time, these temperatures would usually decrease in some 10°C.
The fecund lands and thick jungles in the Yucatan Peninsula and Southern Mexico are characterised for their high temperatures and rainy areas. Within this geographical zone is located Cancún, a beach resort that shows a very hot climate throughout the year, and Acapulco, which shows a yearly temperature average of 32 centigrade degrees.
In the San Cristóbal de las Casas (Chiapas) mountain ridge, climate is colder and drier. Oaxaca, at about 1.500 m.a.s.l., temperature can drop to 0° C during winter nights, rising to 38° C in the summer season.