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

84.7

°F

June 26, 16:58

Trend:

increasing

Yesterday:

84.5°F

Tomorrow:

84.9°F

Sunrise:

07:22

Sunset:

20:46

Day Length:

13 h. 24 min.

San Francisco in July

Minimum:

71.8°F

Average:

77.9°F

Maximum:

80.3°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 84.7°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 0.2°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 rise a bit.

Recent sea temperature and forecast

Today's water temperature closely matches the previous two weeks' average, indicating a stable trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 85.8°F on 2015, while the historical minimum was 83.1°F on 2017.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 85.3°F, with minimum temperature starting at 84.9°F, while the maximum might reach 85.7°F.

Daily water temperature in San Francisco

Date Current Year

actual* / forecast**

last year 10 years average
Jun 12 85.9°F 83.8°F 83.4°F
Jun 13 85.1°F 83.5°F 83.4°F
Jun 14 85.0°F 83.4°F 83.4°F
Jun 15 84.8°F 83.8°F 83.2°F
Jun 16 84.5°F 84.4°F 83.2°F
Jun 17 84.4°F 84.3°F 83.3°F
Jun 18 84.3°F 83.7°F 83.3°F
Jun 19 84.3°F 83.9°F 83.6°F
Jun 20 84.4°F 83.6°F 83.6°F
Jun 21 84.5°F 83.7°F 83.8°F
Jun 22 84.6°F 83.8°F 84.2°F
Jun 23 84.6°F 84.3°F 84.1°F
Jun 24 84.5°F 84.3°F 84.3°F
Jun 25 84.5°F 84.3°F 84.3°F
Jun 26 84.7°F 84.4°F 84.5°F
Jun 27 84.9°F 84.6°F 84.7°F
Jun 28 85.0°F 84.3°F 84.7°F
Jun 29 85.0°F 84.4°F 84.8°F
Jun 30 85.4°F 84.5°F 85.2°F
Jul 1 85.4°F 84.6°F 85.2°F
Jul 2 85.6°F 84.7°F 85.4°F
Jul 3 85.7°F 84.8°F 85.5°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 July 31, 2023, reaching a 89.6°F. While the coldest temperature occurred on January 25, 2025, dipping to 70.5°F. The average readings by season are 77.8°F in Winter, 78.2°F in Spring, 85.7°F in Summer, and 85.8°F in Autumn.