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

80.1

°F

January 31, 15:03

Trend:

decreasing

Yesterday:

80.9°F

Tomorrow:

80.1°F

Sunrise:

06:39

Sunset:

18:24

Day Length:

11 h. 45 min.

San Francisco in February

Minimum:

79.7°F

Average:

82.0°F

Maximum:

84.7°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 80.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is about the same as 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 considerably 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 83.0°F on 2025, while the historical minimum was 75.2°F on 2019.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 79.3°F, the minimum temperature may reach 78.7°F, and the maximum might stay at 80.1°F.

Daily water temperature in San Francisco

Date Current Year

actual* / forecast**

last year 10 years average
Jan 17 80.8°F 82.8°F 81.2°F
Jan 18 81.1°F 82.4°F 80.9°F
Jan 19 81.1°F 82.5°F 80.8°F
Jan 20 81.2°F 82.2°F 80.6°F
Jan 21 81.8°F 82.1°F 80.6°F
Jan 22 82.1°F 82.1°F 80.7°F
Jan 23 81.7°F 83.1°F 80.7°F
Jan 24 81.1°F 82.6°F 80.6°F
Jan 25 81.0°F 82.9°F 80.5°F
Jan 26 81.7°F 82.9°F 80.5°F
Jan 27 81.6°F 83.5°F 80.7°F
Jan 28 81.5°F 82.5°F 80.4°F
Jan 29 81.3°F 82.0°F 80.3°F
Jan 30 80.9°F 82.2°F 80.0°F
Jan 31 80.1°F 83.0°F 80.2°F
Feb 1 80.1°F 82.9°F 80.2°F
Feb 2 79.6°F 82.3°F 79.7°F
Feb 3 79.4°F 82.6°F 79.5°F
Feb 4 79.2°F 82.3°F 79.3°F
Feb 5 79.3°F 82.5°F 79.4°F
Feb 6 79.0°F 82.7°F 79.1°F
Feb 7 78.7°F 82.8°F 78.8°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 September 6, 2023, reaching a 87.5°F. While the coldest temperature occurred on February 23, 2023, dipping to 73.1°F. The average readings by season are 80.6°F in Winter, 80.7°F in Spring, 84.0°F in Summer, and 83.7°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Panamá 80.1°F 1mi
Veracruz 80.7°F 10mi
San José 80.9°F 16mi
Miramar 82.1°F 42mi
San José 81.2°F 42mi

* current water temperature in this city

** straight line distance from San Francisco