The phenomenon of the Canicula and its impact in Mexico
After the Summer Solstice and an intense rainy season, Mexico is preparing to face another significant climatic event: the Canicula. This period, also known as intra-summer drought, is characterized by a drastic increase in temperatures, reaching up to 45 degrees Celsius in some regions. According to data from the National Meteorological Service (SMN), this phenomenon will begin on July 3, 2025 and will last for approximately 40 days, concluding around August 11.
Causes and characteristics of the Dog Days
The Dog Day is the result of excessive heating of the air, combined with more intense trade winds that inhibit cloud formation. This process significantly reduces precipitation, creating clear skies and arid conditions. Unlike traditional droughts, this phenomenon is temporary, but its impact can be severe, especially in sectors such as agriculture, where the lack of rain affects crop cycles.
The exact dates of the Dog Days vary each year due to factors such as:
- The intensity of the winds in the Gulf of Mexico and the Pacific.
- Local oceanic and atmospheric conditions.
- The previous behavior of rainfall in each region.
Most affected regions and health effects
Southeast Mexico will be the most impacted area, with states such as Campeche, Yucatán, Quintana Roo, Tabasco, Veracruz, Guerrero and Oaxaca experiencing the highest temperatures. On the contrary, regions such as Sonora, Sinaloa, Zacatecas, Baja California and Mexico City will feel minor effects.
This period carries significant health risks, including:
- Heat stroke due to prolonged exposure to high temperatures.
- Dehydration, especially in children and older adults.
- Skin damage due to intense solar radiation.
Recommendations to mitigate the effects
To reduce the risks associated with the Canicula, health authorities recommend:
- Constant hydration: consume at least 2 liters of water a day.
- Avoid sun exposure between 11:00 a.m. and 4:00 p.m., when UV rays are most intense.
- Wear light, light-colored clothing, as well as hats and protective glasses.
- Apply sunscreen and moisturizing creams to take care of the skin.
- Prioritize spaces with adequate ventilation and air flow.
Conclusion and call to action
The Dog Day 2025 represents a climate and public health challenge that requires preparation. Knowing its dates, effects and preventive measures is key to minimizing its impact. Share this information on your social networks to help more people face this period of extreme heat. If you want to delve deeper into meteorological topics, explore our related content.




