There are following are the public holidays in Mexico where it can be expected that all banks will be closed.
The full list of banking holidays in Mexico for 2018 calendar year:
January 1, 2018, Monday – Año Nuevo (New Year’s Day), National holiday in Mexico
February 5, 2018, Monday – Día de la Constitución (Constitution Day), National holiday (First Monday in February)
March 19, 2018, Monday – Natalicio de Benito Juárez (Benito Juárez’s birthday), National holiday (Third Monday of March)
March 29, 2018, Thursday – Jueves Santo (Maundy Thursday), Public holiday (The Thursday before Easter Sunday)
March 30, 2018, Friday – Viernes Santo (Good Friday), Public holiday (Friday before Easter Sunday)
April 1, 2018, Sunday – Easter Sunday
May 1, 2018, Tuesday – Día del Trabajo (Labour Day), National holiday in Mexico
July 1, 2018, Sunday– Mexican General Elections
September 16, 2018, Sunday – Día de la Independencia (Independence Day), National holiday in Mexico
November 2, 2018, Friday – All Souls Day
November 19, 2018, Monday – Revolution Day Memorial, Public holiday (The third Monday of November)
December 1, 2018, Saturday – Inauguration Day, Public holiday (The third Monday of November)
December 12, 2018, Wednesday – Day of the Virgin of Guadalupe
December 25, 2018, Tuesday – Día de Navidad (Christmas Day), National holiday in Mexico