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

87.5

°F

May 10, 01:27

Trend:

stable

Yesterday:

87.4°F

Tomorrow:

87.4°F

Sunrise:

05:23

Sunset:

17:56

Day Length:

12 h. 33 min.

San Francisco in May

Minimum:

81.2°F

Average:

83.2°F

Maximum:

86.1°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 87.5°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 1.4°F higher 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

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 88.2°F on 2023, while the historical minimum was 84.4°F on 2015.

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 maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 87.7°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
Apr 26 85.9°F 87.0°F 85.7°F
Apr 27 86.6°F 86.6°F 85.7°F
Apr 28 87.2°F 86.3°F 85.7°F
Apr 29 87.2°F 86.9°F 85.9°F
Apr 30 86.7°F 86.2°F 85.8°F
May 1 86.8°F 86.1°F 85.8°F
May 2 86.8°F 86.5°F 85.9°F
May 3 86.6°F 85.9°F 85.8°F
May 4 86.4°F 87.5°F 85.9°F
May 5 86.4°F 87.2°F 86.2°F
May 6 86.3°F 87.1°F 86.0°F
May 7 86.8°F 86.8°F 86.3°F
May 8 86.4°F 85.8°F 86.2°F
May 9 87.4°F 86.1°F 86.0°F
May 10 87.5°F 86.9°F 86.2°F
May 11 87.4°F 86.8°F 86.1°F
May 12 87.7°F 87.0°F 86.3°F
May 13 87.7°F 87.1°F 86.4°F
May 14 87.8°F 87.2°F 86.5°F
May 15 87.9°F 87.0°F 86.6°F
May 16 87.8°F 88.0°F 86.5°F
May 17 87.9°F 87.9°F 86.6°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

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 13, 2015, dipping to 79.0°F. The average readings by season are 83.0°F in Winter, 84.9°F in Spring, 86.2°F in Summer, and 85.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Trinidad 87.2°F 6mi
Santiago 86.4°F 30mi
Cebu City 86.0°F 31mi
San Francisco 86.5°F 34mi

* current water temperature in this city

** straight line distance from San Francisco