All data are in degrees Fahrenheit

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Water temperature in San Francisco

Detailed information about the current water temperature in San Francisco. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in San Francisco now

86.5

°F

August 6, 03:17

Trend:

stable

Yesterday:

86.6°F

Tomorrow:

86.6°F

Sunrise:

05:33

Sunset:

18:05

Day Length:

12 h. 32 min.

San Francisco in August

Minimum:

81.0°F

Average:

82.8°F

Maximum:

85.2°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 86.5°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 1.2°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 87.2°F on 2023, while the historical minimum was 83.4°F on 2015.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 86.6°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in San Francisco

Date Current Year

actual* / forecast**

last year 10 years average
Jul 23 85.3°F 85.7°F 85.7°F
Jul 24 85.3°F 85.5°F 85.8°F
Jul 25 85.4°F 85.3°F 85.8°F
Jul 26 85.3°F 85.2°F 85.9°F
Jul 27 85.6°F 85.6°F 86.0°F
Jul 28 85.8°F 85.5°F 86.0°F
Jul 29 85.7°F 85.5°F 85.9°F
Jul 30 85.6°F 86.8°F 86.0°F
Jul 31 86.0°F 86.5°F 86.0°F
Aug 1 86.7°F 86.4°F 86.0°F
Aug 2 86.8°F 86.5°F 86.0°F
Aug 3 85.7°F 86.4°F 85.7°F
Aug 4 85.6°F 86.2°F 85.5°F
Aug 5 86.6°F 86.0°F 85.4°F
Aug 6 86.5°F 85.9°F 85.4°F
Aug 7 86.6°F 85.8°F 85.4°F
Aug 8 86.6°F 86.1°F 85.4°F
Aug 9 86.5°F 85.9°F 85.3°F
Aug 10 86.3°F 85.7°F 85.1°F
Aug 11 86.6°F 86.1°F 85.4°F
Aug 12 86.8°F 86.2°F 85.6°F
Aug 13 86.9°F 86.3°F 85.7°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in San Francisco by month

In San Francisco, the water temperature is comfortable for swimming all year round.
The warmest water in San Francisco was recorded on May 18, 2024, reaching a 89.3°F. While the coldest temperature occurred on January 13, 2015, dipping to 79.0°F. The average readings by season are 83.0°F in Winter, 84.9°F in Spring, 86.2°F in Summer, and 85.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Trinidad 86.2°F 6mi
Santiago 87.1°F 30mi
Cebu City 86.3°F 31mi
San Francisco 87.0°F 34mi

* current water temperature in this city

** straight line distance from San Francisco