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 11.87°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.

53.4

°F

November 21, 01:46

Trend:

decreasing

Yesterday:

53.5°F

Tomorrow:

53.3°F

Sunrise:

06:57

Sunset:

16:54

Day Length:

9 h. 57 min.

San Francisco in November

Minimum:

51.4°F

Average:

52.6°F

Maximum:

54.7°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 53.4°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 3.9°F lower 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

Today's water temperature is considerably 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 58.5°F on 2014, while the historical minimum was 55.4°F on 2022.

latest data

last year

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 minimum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 53.0°F, the minimum temperature may reach 52.6°F, and the maximum might stay at 53.3°F.

Daily water temperature in San Francisco

Date	Current Year actual* / forecast**	last year	10 years average
Nov 7	58.2°F	60.0°F	59.5°F
Nov 8	57.5°F	59.5°F	59.1°F
Nov 9	57.5°F	59.9°F	59.1°F
Nov 10	56.9°F	58.9°F	58.5°F
Nov 11	56.7°F	57.8°F	58.3°F
Nov 12	56.9°F	59.2°F	58.4°F
Nov 13	56.6°F	58.1°F	58.2°F
Nov 14	56.6°F	59.2°F	58.2°F
Nov 15	56.4°F	58.6°F	58.0°F
Nov 16	56.4°F	58.5°F	57.9°F
Nov 17	56.0°F	57.8°F	57.6°F
Nov 18	56.0°F	58.4°F	57.6°F
Nov 19	55.0°F	58.2°F	57.1°F
Nov 20	53.5°F	58.7°F	56.8°F
Nov 21	53.4°F	58.5°F	57.2°F
Nov 22	53.3°F	58.6°F	57.1°F
Nov 23	53.1°F	57.4°F	56.9°F
Nov 24	53.1°F	57.7°F	56.9°F
Nov 25	53.1°F	57.3°F	56.9°F
Nov 26	52.9°F	57.0°F	56.7°F
Nov 27	52.9°F	56.8°F	56.7°F
Nov 28	52.6°F	57.0°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 53.7°F in Winter, 56.2°F in Spring, 60.9°F in Summer, and 60.7°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Oakland	54.3°F	8mi
Redwood City	55.5°F	22mi
San Jose	55.7°F	42mi

* current water temperature in this city

** straight line distance from San Francisco