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

82.4

°F

March 18, 03:59

Trend:

increasing

Yesterday:

82.1°F

Tomorrow:

82.5°F

Sunrise:

05:49

Sunset:

17:54

Day Length:

12 h. 5 min.

San Francisco in March

Minimum:

82.3°F

Average:

83.3°F

Maximum:

85.4°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 82.4°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 1.3°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. 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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 85.3°F on 2021, while the historical minimum was 81.8°F on 2017.

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 82.7°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
Mar 4 83.3°F 84.5°F 82.9°F
Mar 5 83.4°F 83.1°F 82.8°F
Mar 6 82.6°F 83.7°F 82.9°F
Mar 7 83.6°F 84.3°F 83.2°F
Mar 8 83.8°F 84.2°F 83.2°F
Mar 9 83.6°F 84.7°F 83.1°F
Mar 10 83.0°F 85.4°F 83.3°F
Mar 11 82.9°F 85.3°F 83.3°F
Mar 12 82.8°F 85.3°F 83.3°F
Mar 13 83.2°F 84.3°F 83.2°F
Mar 14 82.4°F 84.5°F 83.2°F
Mar 15 81.8°F 84.1°F 83.1°F
Mar 16 81.4°F 84.7°F 83.0°F
Mar 17 82.1°F 84.9°F 83.4°F
Mar 18 82.4°F 84.6°F 83.7°F
Mar 19 82.5°F 84.0°F 83.8°F
Mar 20 82.4°F 83.9°F 83.7°F
Mar 21 82.7°F 83.7°F 83.9°F
Mar 22 82.6°F 83.7°F 83.9°F
Mar 23 82.8°F 83.7°F 84.1°F
Mar 24 82.9°F 83.4°F 84.2°F
Mar 25 82.8°F 83.3°F 84.1°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 29, 2019, dipping to 80.1°F. The average readings by season are 83.2°F in Winter, 85.0°F in Spring, 86.3°F in Summer, and 85.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Trinidad 82.4°F 6mi
Santiago 81.6°F 30mi
Cebu City 81.4°F 31mi
San Francisco 81.6°F 34mi

* current water temperature in this city

** straight line distance from San Francisco