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

85.3

°F

December 11, 00:35

Trend:

stable

Yesterday:

85.0°F

Tomorrow:

85.3°F

Sunrise:

05:49

Sunset:

17:22

Day Length:

11 h. 33 min.

San Francisco in December

Minimum:

79.1°F

Average:

82.4°F

Maximum:

84.8°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 85.3°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 0.6°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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 86.3°F on 2020, while the historical minimum was 83.5°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 85.0°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
Nov 27 84.8°F 84.9°F 85.0°F
Nov 28 85.9°F 85.1°F 85.2°F
Nov 29 85.8°F 85.3°F 85.3°F
Nov 30 85.3°F 84.9°F 85.1°F
Dec 1 85.1°F 84.5°F 84.9°F
Dec 2 85.2°F 84.9°F 84.8°F
Dec 3 84.9°F 86.1°F 84.7°F
Dec 4 85.2°F 86.0°F 84.9°F
Dec 5 85.1°F 85.9°F 84.9°F
Dec 6 84.9°F 85.6°F 84.8°F
Dec 7 84.8°F 84.5°F 84.7°F
Dec 8 85.1°F 84.3°F 84.7°F
Dec 9 85.0°F 84.2°F 84.6°F
Dec 10 85.0°F 84.2°F 84.5°F
Dec 11 85.3°F 85.6°F 84.8°F
Dec 12 85.3°F 84.9°F 84.7°F
Dec 13 85.3°F 84.8°F 84.7°F
Dec 14 85.2°F 84.8°F 84.6°F
Dec 15 84.9°F 85.2°F 84.3°F
Dec 16 84.8°F 84.9°F 84.2°F
Dec 17 84.9°F 84.8°F 84.4°F
Dec 18 84.8°F 84.6°F 84.2°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 85.0°F 6mi
Santiago 85.0°F 30mi
Cebu City 84.7°F 31mi
San Francisco 84.9°F 34mi

* current water temperature in this city

** straight line distance from San Francisco