San Diego Weather In August

The highest recorded temperature for San Diego California for the past 70 years in August was 98 degrees Fahrenheit, measured on August 31, 1955, while the mean high temperature is 78. The lowest documented temperature for San Diego for the past 70 years in August was 57 on August 7, 1944, and the average low daily temperature is 67.

National Weather Service historical San Diego August Weather data indicates that on August 23, 1924, the recorded high did not exceed 66 degrees Fahrenheit, the lowest high measured in San Diego in the past 70 years. Weather Service records additionally indicate that on August 23, 1984, the low for the day was not measured below 76 degrees, the highest low temperature recorded in San Diego in the last 70 years.

NWS data indicates that the daily high temperature in San Diego on August First averages 76 degrees Fahrenheit and the high on the last day of August averages 76 degrees. The low recorded temperature in San Diego on August First averages 66 degrees Fahrenheit and the low temperature on the final day of August averages 65 degrees.

San Diego usually receives an average of 0.09 inches of rain during the month. The most precipitation measured in a single day, as indicated by August San Diego Weather data, was 1.44 inches on August 17, 1977.