< Previous Month Next Month >

San Diego August Weather

Averages and records for weather in San Diego, California in the month of August.

Typical San Diego August Weather 1991–2020
Average daily high	76.9 °F
Average daily low	67.2 °F
Average monthly precipitation	0.0 inches
Daily chance of precipitation	0.97%

San Diego August Weather Records 1850–2024
Highest temperature	98 °F	August 31, 1955
Lowest temperature	54 °F	August 29, 1895
Highest daily low	78 °F	August 10, 2018
Lowest daily high	66 °F	August 28, 2010
Hottest average high temperature	83.3 °F	2018
Coldest average high temperature	70.0 °F	1900
Most daily precipitation	1.8 inches	August 20, 2023
Most monthly precipitation	2.1 inches	1977

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
August 1	75.9	66.7	90	60
August 2	76.0	66.8	85	59
August 3	76.0	66.8	85	57
August 4	76.1	66.9	86	59
August 5	76.2	66.9	88	56
August 6	76.2	66.9	89	56
August 7	76.2	67.0	91	55
August 8	76.3	67.0	94	58
August 9	76.3	67.0	90	59
August 10	76.4	67.0	88	58
August 11	76.4	67.0	88	58
August 12	76.5	67.1	94	57
August 13	76.7	67.1	93	57
August 14	76.8	67.2	90	57
August 15	76.9	67.2	92	58
August 16	76.9	67.2	88	59
August 17	77.0	67.2	88	58
August 18	77.0	67.2	90	59
August 19	77.1	67.2	88	54
August 20	77.2	67.3	89	58
August 21	77.3	67.3	89	58
August 22	77.4	67.3	90	59
August 23	77.6	67.4	89	55
August 24	77.6	67.4	85	58
August 25	77.6	67.4	89	57
August 26	77.6	67.4	92	58
August 27	77.5	67.4	91	58
August 28	77.5	67.3	91	54
August 29	77.4	67.3	88	54
August 30	77.4	67.2	93	56
August 31	77.4	67.1	98	58

Weather Station Details

Years	Station	Coordinates
1940–2024	San Diego International Airport	location
1850–1939	San Diego WBO	location