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San Diego in August

Find out everything about the water temperature in San Diego in August. Average, minimum and maximum recorded temperatures as well as daily temperature in August for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in August
Minimum:

61.9 °F

Average:

70.4 °F

Maximum:

75.8 °F

Sea water temperature in San Diego in August

In the city of San Diego, the month of August is somewhat comfortable for swimming. The minimum recorded temperature during this month was 61.9°F on August 4, 2021, with an average temperature being 70.4°F and a maximum temperature reaching 75.8°F on August 7, 2018.

While some may find it enjoyable for a brief swim, others might consider it a bit too cold for extended periods in the water. In August, the sea temperature remains relatively stable. The average temperature stays close to 70.4°F throughout the month, with minimal changes.
Date 10 years average 2024 2023
Aug 1 70.0°F 65.1°F 70.7°F
Aug 2 69.9°F 64.4°F 71.3°F
Aug 3 69.8°F 64.1°F 71.8°F
Aug 4 69.8°F 63.8°F 71.5°F
Aug 5 69.7°F 63.6°F 70.6°F
Aug 6 69.8°F 64.0°F 69.4°F
Aug 7 69.8°F 64.7°F 69.1°F
Aug 8 70.1°F 66.4°F 69.8°F
Aug 9 70.1°F 67.8°F 69.6°F
Aug 10 70.5°F 68.2°F 70.0°F
Aug 11 70.8°F 68.5°F 70.4°F
Aug 12 70.9°F 68.6°F 71.3°F
Aug 13 70.8°F 68.5°F 71.3°F
Aug 14 70.7°F 68.4°F 70.2°F
Aug 15 70.7°F 68.4°F 69.2°F
Aug 16 70.6°F 72.5°F 68.3°F
Aug 17 70.6°F 72.4°F 66.2°F
Aug 18 70.8°F 72.9°F 64.3°F
Aug 19 70.7°F 73.2°F 64.0°F
Aug 20 70.8°F 74.3°F 64.1°F
Aug 21 70.5°F 73.8°F 64.4°F
Aug 22 70.4°F 73.7°F 64.3°F
Aug 23 70.7°F 73.7°F 64.9°F
Aug 24 70.8°F 73.7°F 65.7°F
Aug 25 71.0°F 74.1°F 66.3°F
Aug 26 70.7°F 73.4°F 66.2°F
Aug 27 70.4°F 72.9°F 65.5°F
Aug 28 70.2°F 72.8°F 65.6°F
Aug 29 69.9°F 71.9°F 64.9°F
Aug 30 69.9°F 71.6°F 64.5°F
Aug 31 69.9°F 70.8°F 65.1°F

Sea water temperature in San Diego by month

In an average year, San Diego offers no days when the water temperature is warm enough to swim comfortably. The warmest water in San Diego was recorded on August 7, 2018, reaching a 75.8°F. While the coldest temperature occurred on February 25, 2023, dipping to 55.9°F. The average readings by season are 60.1°F in Winter, 61.8°F in Spring, 68.6°F in Summer, and 66.8°F in Autumn. In August, the temperature is higher than July's average of 69.3°F and September's average of 69.4°F.

Popular neighboring cities and resorts

City Water temperature* Distance**
Tijuana 57.8°F 17mi
Oceanside 60.0°F 35mi
Laguna Beach 58.7°F 67mi

* current water temperature in this city

** straight line distance from San Diego