San Francisco in August
Find out everything about the water temperature in San Francisco 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:
58.0 °F
Average:
62.5 °F
Maximum:
67.4 °F
Sea water temperature in San Francisco in August
In the city of San Francisco, the month of August is somewhat too cool for swimming. The minimum recorded temperature during this month was 58.0°F on August 1, 2016, with an average temperature being 62.5°F and a maximum temperature reaching 67.4°F on August 28, 2023.
| Date | 10 years average | 2023 | 2022 |
|---|---|---|---|
| Aug 1 | 61.4°F | 60.7°F | 60.8°F |
| Aug 2 | 61.4°F | 59.9°F | 61.8°F |
| Aug 3 | 61.6°F | 59.9°F | 63.5°F |
| Aug 4 | 61.7°F | 60.1°F | 63.2°F |
| Aug 5 | 61.7°F | 60.6°F | 63.7°F |
| Aug 6 | 61.8°F | 61.4°F | 63.2°F |
| Aug 7 | 61.8°F | 60.7°F | 64.6°F |
| Aug 8 | 62.0°F | 61.6°F | 63.1°F |
| Aug 9 | 62.3°F | 61.5°F | 63.1°F |
| Aug 10 | 62.3°F | 62.4°F | 63.6°F |
| Aug 11 | 62.1°F | 61.8°F | 63.0°F |
| Aug 12 | 62.3°F | 62.2°F | 62.8°F |
| Aug 13 | 62.5°F | 62.7°F | 62.7°F |
| Aug 14 | 62.6°F | 63.5°F | 63.2°F |
| Aug 15 | 62.8°F | 63.9°F | 64.0°F |
| Aug 16 | 63.0°F | 64.0°F | 64.3°F |
| Aug 17 | 62.9°F | 64.7°F | 63.9°F |
| Aug 18 | 62.9°F | 65.1°F | 65.9°F |
| Aug 19 | 63.1°F | 65.0°F | 65.7°F |
| Aug 20 | 62.8°F | 64.5°F | 64.9°F |
| Aug 21 | 62.6°F | 64.4°F | 65.0°F |
| Aug 22 | 62.9°F | 65.9°F | 65.6°F |
| Aug 23 | 62.9°F | 66.2°F | 65.0°F |
| Aug 24 | 62.9°F | 66.3°F | 64.0°F |
| Aug 25 | 63.1°F | 66.9°F | 63.9°F |
| Aug 26 | 63.2°F | 66.8°F | 63.6°F |
| Aug 27 | 63.1°F | 66.6°F | 62.3°F |
| Aug 28 | 63.3°F | 67.4°F | 62.5°F |
| Aug 29 | 63.3°F | 65.8°F | 63.7°F |
| Aug 30 | 63.2°F | 65.8°F | 64.4°F |
| Aug 31 | 63.1°F | 65.1°F | 64.2°F |
In an average year, San Francisco offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in San Francisco was recorded on August 28, 2023, reaching a 67.4°F. While the coldest temperature occurred on March 4, 2023, dipping to 49.3°F. The average readings by season are 53.7°F in Winter, 56.2°F in Spring, 60.9°F in Summer, and 60.7°F in Autumn.
The average temperature in August is slightly warmer than July's average of 60.7°F. And in September, the temperature is expected to rise further, potentially reaching an average of 62.9°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Oakland |
55.5°F
|
8mi |
| Redwood City |
65.5°F
|
22mi |
| San Jose |
63.2°F
|
42mi |
* current water temperature in this city
** straight line distance from San Francisco