Overview
- The formal heat season is set from the third week of March through the first week of October, according to Cenapred and federal guidance.
- The Servicio Meteorológico Nacional forecasts a national March average of 29.8 °C, the highest since 2017 and about 1.4 °C above the 1981–2010 March climatology.
- State-level anomalies are uneven, led by San Luis Potosí (+2.3 °C), Coahuila (+2.2 °C) and Aguascalientes (+2.0 °C), with a few states projected below the historical March average.
- Authorities urge hydration, avoidance of peak sun hours and special protection for children and older adults, and the SMN notes monthly updates in the first week can reflect short-term weather shifts.
- Officials highlight drought risks and potential knock-on effects for the hurricane season, while the UK Met Office expects 2026 global temperatures around 1.46 °C above preindustrial levels.