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 17.46°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

63.4

°F

September 5, 11:47

Trend:

stable

Yesterday:

65.4°F

Tomorrow:

63.4°F

Sunrise:

06:43

Sunset:

19:33

Day Length:

12 h. 50 min.

San Francisco in September

Minimum:

51.4°F

Average:

52.8°F

Maximum:

55.5°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 63.4°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 0.2°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 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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 66.5°F on 2019, while the historical minimum was 58.8°F on 2016.

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 maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 63.6°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
Aug 22	63.4°F	62.2°F	62.9°F
Aug 23	63.5°F	61.8°F	62.9°F
Aug 24	63.8°F	60.7°F	62.8°F
Aug 25	64.8°F	60.9°F	63.2°F
Aug 26	64.8°F	61.8°F	63.2°F
Aug 27	64.0°F	63.1°F	63.1°F
Aug 28	63.8°F	64.3°F	63.4°F
Aug 29	63.9°F	64.0°F	63.4°F
Aug 30	64.0°F	63.6°F	63.3°F
Aug 31	65.0°F	63.2°F	63.2°F
Sep 1	66.0°F	63.0°F	63.7°F
Sep 2	66.6°F	61.9°F	63.4°F
Sep 3	65.9°F	62.5°F	63.5°F
Sep 4	65.4°F	62.5°F	63.2°F
Sep 5	63.4°F	63.9°F	63.2°F
Sep 6	63.4°F	63.8°F	63.2°F
Sep 7	63.6°F	64.2°F	63.4°F
Sep 8	63.4°F	63.2°F	63.2°F
Sep 9	63.9°F	64.4°F	63.7°F
Sep 10	63.9°F	65.6°F	63.7°F
Sep 11	63.7°F	65.1°F	63.5°F
Sep 12	63.5°F	64.9°F	63.3°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 60.6°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Oakland	66.2°F	8mi
Redwood City	71.5°F	22mi
San Jose	71.5°F	42mi

* current water temperature in this city

** straight line distance from San Francisco