2025 Rainy Season: When Does it End and Why Has it Been So Intense?

Web Editor

October 5, 2025

a group of people walking down a flooded street in a tunnel with a bus in the background and a green

Overview of the 2025 Rainy Season in Mexico

The rainy season in Mexico, officially ending on November 30th according to the National Weather Service (SMN) and the National Disaster Prevention Center (Cenapred), will continue to bring wet conditions through October and November. The season began on May 15th in the Pacific Ocean and June 1st in the Atlantic Ocean, with above-average rainfall expected in June.

Constant and Favorable Rainfall

From May to September, Mexico has experienced consistent and favorable rainfall, leading to full water storage in dams across various states. However, several cities and communities have suffered due to severe flooding that has impacted homes and infrastructure, making this season seem unusually long.

Has the 2025 Rainy Season Lasted Longer?

The 2025 rainy season remains within the typical timeframe, but it has been marked by a phenomenon known as El Niño-La Niña neutral conditions. This has resulted in an active season on both coasts, with increased frequency and proximity of tropical storms.

El Niño typically occurs in Mexico’s northwestern, northern regions, and slightly in the central part. Conversely, La Niña is more common in the south-central region.

Future Rainfall Outlook

In the coming months, intense rainfall may continue to affect certain areas.

Key Questions and Answers

  • Q: When does the rainy season in Mexico usually end? A: The official end of the rainy season in Mexico is November 30th, as determined by the SMN and Cenapred.
  • Q: When did the 2025 rainy season begin? A: The rainy season started on May 15th in the Pacific Ocean and June 1st in the Atlantic Ocean.
  • Q: Why has the 2025 rainy season seemed so intense? A: The 2025 rainy season has been marked by El Niño-La Niña neutral conditions, leading to more frequent and closer tropical storms along both coasts.
  • Q: How have cities and communities been affected by the intense rainfall? A: Severe flooding has impacted homes and infrastructure in various cities, making the season seem unusually long.
  • Q: What can we expect in terms of rainfall for the remaining months of 2025? A: Intense rainfall may continue to affect certain areas in the coming months.

Context and Relevance

Understanding the 2025 rainy season in Mexico is crucial for residents, policymakers, and emergency responders. The prolonged and intense rainfall has led to significant flooding, causing damage to homes and infrastructure. The El Niño-La Niña neutral conditions have contributed to an active season with more frequent tropical storms along both coasts. As the season officially ends on November 30th, continued vigilance and preparation for potential rainfall are essential to mitigate further impacts on communities.