What is the current water temperature in San Francisco?

Q: What is the current water temperature in San Francisco?

As of now, in San Francisco, the water temperature is 15.25°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

United States > San Francisco

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.

59.5

°F

November 18, 13:27

Trend:

decreasing

Yesterday:

59.8°F

Tomorrow:

59.0°F

Sunrise:

06:53

Sunset:

16:56

Day Length:

10 h. 3 min.

San Francisco in November

Minimum:

51.7°F

Average:

52.7°F

Maximum:

54.7°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 59.5°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.0°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 fall a bit.

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 maximum temperature for this date. The maximum temperature recorded for this date was 59.8°F on 2016, while the historical minimum was 56.0°F on 2024.

latest data

last year

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 58.6°F, the minimum temperature may reach 58.4°F, and the maximum might stay at 59.0°F.

Daily water temperature in San Francisco

Date	Current Year actual* / forecast**	last year	10 years average
Nov 4	60.5°F	59.3°F	59.5°F
Nov 5	60.8°F	58.9°F	59.3°F
Nov 6	59.8°F	59.6°F	59.5°F
Nov 7	59.5°F	58.2°F	59.3°F
Nov 8	59.7°F	57.5°F	59.0°F
Nov 9	60.1°F	57.6°F	59.0°F
Nov 10	60.5°F	57.0°F	58.5°F
Nov 11	60.0°F	56.8°F	58.3°F
Nov 12	59.7°F	57.0°F	58.4°F
Nov 13	59.3°F	56.7°F	58.1°F
Nov 14	59.0°F	56.6°F	58.1°F
Nov 15	59.3°F	56.4°F	58.0°F
Nov 16	60.1°F	56.4°F	57.9°F
Nov 17	59.8°F	56.0°F	57.6°F
Nov 18	59.5°F	56.0°F	57.4°F
Nov 19	59.0°F	55.0°F	57.0°F
Nov 20	58.7°F	53.5°F	56.7°F
Nov 21	58.7°F	53.4°F	56.7°F
Nov 22	58.7°F	53.4°F	56.6°F
Nov 23	58.4°F	53.6°F	56.4°F
Nov 24	58.5°F	54.1°F	56.5°F
Nov 25	58.5°F	54.3°F	56.5°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 an average year, San Francisco offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in San Francisco was recorded on August 28, 2023, reaching a 67.4°F. While the coldest temperature occurred on March 4, 2023, dipping to 49.3°F. The average readings by season are 53.5°F in Winter, 56.3°F in Spring, 61.1°F in Summer, and 60.7°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Oakland	60.3°F	8mi
Redwood City	61.8°F	22mi
San Jose	61.4°F	42mi

* current water temperature in this city

** straight line distance from San Francisco