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

75.4

°F

February 22, 08:58

Trend:

stable

Yesterday:

75.8°F

Tomorrow:

75.4°F

Sunrise:

07:27

Sunset:

19:03

Day Length:

11 h. 36 min.

San Francisco in February

Minimum:

71.4°F

Average:

78.0°F

Maximum:

80.1°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 75.4°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.3°F lower 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

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling 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 78.9°F on 2016, while the historical minimum was 74.0°F on 2021.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 75.2°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
Feb 8 72.7°F 78.2°F 76.2°F
Feb 9 73.1°F 77.6°F 76.1°F
Feb 10 74.4°F 77.7°F 76.3°F
Feb 11 75.7°F 77.7°F 76.5°F
Feb 12 76.2°F 77.4°F 76.5°F
Feb 13 76.3°F 77.4°F 76.7°F
Feb 14 77.1°F 77.4°F 76.8°F
Feb 15 77.4°F 77.3°F 76.9°F
Feb 16 76.9°F 76.9°F 76.8°F
Feb 17 76.7°F 76.6°F 76.9°F
Feb 18 76.9°F 75.4°F 76.7°F
Feb 19 76.7°F 75.2°F 76.6°F
Feb 20 76.4°F 74.4°F 76.5°F
Feb 21 75.8°F 75.1°F 76.6°F
Feb 22 75.4°F 76.7°F 76.7°F
Feb 23 75.4°F 76.4°F 76.7°F
Feb 24 75.3°F 76.1°F 76.6°F
Feb 25 75.6°F 76.0°F 76.8°F
Feb 26 75.5°F 76.4°F 76.7°F
Feb 27 75.3°F 75.7°F 76.5°F
Feb 28 75.3°F 76.8°F 76.6°F
Mar 1 74.1°F 32.0°F 76.7°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 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, 78.3°F in Spring, 85.6°F in Summer, and 85.8°F in Autumn.