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

82.9

°F

January 20, 21:22

Trend:

stable

Yesterday:

82.8°F

Tomorrow:

82.8°F

Sunrise:

06:02

Sunset:

17:39

Day Length:

11 h. 37 min.

San Francisco in January

Minimum:

81.6°F

Average:

82.5°F

Maximum:

83.6°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 82.9°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 1.1°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 82.4°F on 2018, while the historical minimum was 81.0°F on 2017.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 82.8°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
Jan 6 82.5°F 82.6°F 82.2°F
Jan 7 82.4°F 83.1°F 82.2°F
Jan 8 83.0°F 82.8°F 82.3°F
Jan 9 82.9°F 82.8°F 82.2°F
Jan 10 82.9°F 83.3°F 82.1°F
Jan 11 82.7°F 83.0°F 82.1°F
Jan 12 82.5°F 82.3°F 82.0°F
Jan 13 82.3°F 82.2°F 81.9°F
Jan 14 82.2°F 82.1°F 81.8°F
Jan 15 82.1°F 82.0°F 81.7°F
Jan 16 82.1°F 82.0°F 81.9°F
Jan 17 82.0°F 82.5°F 81.9°F
Jan 18 83.1°F 82.1°F 81.9°F
Jan 19 82.8°F 82.5°F 81.9°F
Jan 20 82.9°F 82.4°F 81.8°F
Jan 21 82.8°F 82.3°F 81.7°F
Jan 22 82.9°F 82.4°F 81.8°F
Jan 23 82.9°F 82.5°F 81.8°F
Jan 24 82.8°F 82.3°F 81.8°F
Jan 25 82.8°F 82.5°F 81.7°F
Jan 26 82.7°F 82.4°F 81.7°F
Jan 27 82.7°F 82.4°F 81.6°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

January

February

March

April

May

June

July

August

September

October

November

December

In San Francisco, the water temperature is comfortable for swimming all year round.
The warmest water in San Francisco was recorded on September 5, 2017, reaching a 86.6°F. While the coldest temperature occurred on February 16, 2019, dipping to 79.3°F. The average readings by season are 82.1°F in Winter, 83.0°F in Spring, 85.0°F in Summer, and 84.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
San Juan 82.9°F 14mi
San Francisco 82.7°F 27mi
San Jose 82.8°F 29mi
San Francisco 82.9°F 43mi
Trinidad 83.3°F 56mi

* current water temperature in this city

** straight line distance from San Francisco