Overview

• June 2025 brought a 55.8% surplus in rainfall, the highest monthly total since 1941, according to SMN data.
• Between July 1 and 29, national precipitation dropped 21% below historical averages as rainfall waned in the east, southeast, south and parts of the western coast.
• Conagua and SMN have attributed the July shortfall to the canícula, noting that exact onset and end dates will only be confirmed after the rainy season closes.
• The canícula, or mid-summer drought, varies in timing, duration and intensity, most frequently affecting central Mexico along the Pacific and Gulf slopes as well as the Yucatán Peninsula.
• Authorities are maintaining real-time monitoring of the canícula to inform agricultural schedules, water resource management, public health advisories.