San Diego Weather In May

In the last 65 years the highest measured May temperature in San Diego was 31 degrees Celsius, most recently encountered on May 29, 1963, and the normal high is 21. The lowest documented temperature in May for San Diego for the past 65 years was 1 most recently encountered on May 15, 1987, and the standard low recorded daily temperature is 15.

National Weather Service historical San Diego May Weather data indicates that on May 31, 1915, the recorded high did not exceed 9 degrees Celsius, the lowest high measured in San Diego in the past 65 years. Weather Service data also shows that on May 26, 1977, the lowest recorded temperature for the day did not drop below 18 degrees, the highest low measured temperature in San Diego in the last 65 years.

National Weather Service records indicate that the high temperature in San Diego on May First averages 19 degrees and the high on the last day of the month averages 18 degrees. The low recorded temperature in San Diego on May First averages 10 degrees Celsius and the low temperature on the final day of May averages 9 degrees.

San Diego usually receives an average of .51 centimeters of precipitation during May. The most rain recorded in a single day, as shown by May San Diego Weather data, was 6.60 centimeters on May 22, 1945.