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Recent Trends
Mean annual temperature 0.6°C since 1960  
'hot' days and 'hot' nights    
'cold' days and 'cold' nights    
Mean Rainfall inconsistent trends since 1960  
Rainfall during heavy events 1.2% per decade since 1960  
Key Trends
PRECIPITATION
  • Mean rainfall over Mexico does not show any consistent increase or decrease since 1960. A particularly wet autumn in 2004 caused an apparent increasing trend in SON.
  • The observed maximum 1- and 5-day rainfalls do not show any substantial alteration in magnitude since 1960 in any season, except during SON, when small increasing trends of +0.85 mm and +1.50 mm per decade in 1- and 5-day events, respectively, are seen.
TEMPERATURE
  • The frequency of hot days and hot nights has increased significantly since 1960 in every season and the frequency of cold days and nights, annually, has decreased significantly since 1960.
  • Mean annual temperature has increased by 0.6°C since 1960, at a rate of approximately 0.13°C per decade. The rate of increase is most rapid in the dry seasons (MAM and DJF) at a rate of 0.18-0.2°C per decade and slower in the wet seasons (JJA and SON).
Annual Climate Characteristics
Click on the map to view the historical climate chart for that province.
To learn more about the data click here.
Key Climate Periods
  • The northern part of the country experiences cooler temperatures and peak rainfall during the winter months.
  • The southeast of the country experiences a tropical rainy climate that ranges from no dry season to a short dry season.
Historical Climate Maps
Annual Rainfall
Major Climate Processes
  • El Niño Southern Oscillation (ENSO)
  • La Niña
Impacts on Climate
  • El Niño events bring relatively cool and wet conditions in the winter in the northern regions of Mexico
  • Greatly influences the Monsoon System
  • Brings warmer and drier conditions at that time of year
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