Severe Weather Alert: Heavy Rains, Strong Winds, and Extreme Heat Expected Across Mexico on September 20-21

Web Editor

September 20, 2025

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Overview of the Weather Conditions

The National Weather Service (SMN) forecasts a weekend of contrasting weather across Mexico, with intense rainfall in the south and southeastern regions, showers in the central and western areas, and extreme heat in the northern and Yucatan Peninsula.

Intense Rains and Thunderstorms

From late Friday through Sunday, very strong to locally intense rainfall is expected in Oaxaca, Chiapas, Tabasco, Veracruz, and Guerrero, with a likelihood of thunderstorms, hail, and the risk of flooding and river level increases.

  • Oaxaca, Chiapas, Tabasco, Veracruz, and Guerrero will experience significant rainfall.
  • Thunderstorms, hail, and potential flooding are also expected in these regions.

Winds and High Waves

The southern Pacific coast, from Guerrero to Chiapas, will see wind gusts of up to 70 km/h and elevated waves, with heights ranging from 2.5 to 3.5 meters, particularly on Sunday. In Baja California Sur and northwestern Mexico, the monsoon season will continue, bringing rain, winds up to 50 km/h, and waves 1.5 to 2.5 meters high.

Extreme Temperatures

The hot weather will persist in the north and southeast. Baja California, Sonora, Chihuahua, Sinaloa, Jalisco, Colima, Michoacán, Campeche, Yucatán, and Quintana Roo will have maximum temperatures between 35 to 40 °C. Meanwhile, mountainous areas in the State of Mexico, Tlaxcala, and Puebla will experience cooler mornings with minimum temperatures ranging from 0 to 5 °C.

Recommendations for the Weekend

Authorities advise exercising extreme caution due to potential landslides, flooding, and water accumulation. It is also recommended to avoid crossing swollen rivers or streams. Along the coast, caution is advised due to high waves, and residents should heed warnings from local civil protection agencies.

Key Questions and Answers

  • What weather conditions are expected across Mexico on September 20-21? Intense rainfall in the south and southeast, showers in central and western areas, and extreme heat in the north and Yucatan Peninsula.
  • Which regions will experience the most severe weather? Oaxaca, Chiapas, Tabasco, Veracruz, and Guerrero will face intense rainfall, thunderstorms, and potential hail and flooding.
  • How will coastal areas be affected? Southern Pacific coasts from Guerrero to Chiapas will see strong winds and high waves, while Baja California Sur and northwestern Mexico will continue to experience monsoon-related rain, winds, and elevated waves.
  • What temperature conditions can be expected? The north and southeast will have very hot weather, with maximum temperatures between 35 to 40 °C. Mountainous areas in the State of Mexico, Tlaxcala, and Puebla will have cooler mornings with minimum temperatures between 0 to 5 °C.
  • What safety measures are recommended for the weekend? Authorities advise caution against landslides, flooding, and water accumulation. Coastal residents should exercise caution due to high waves, and everyone should follow warnings from local civil protection agencies.