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 16.85°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.

62.3

°F

October 20, 13:39

Trend:

decreasing

Yesterday:

63.3°F

Tomorrow:

62.1°F

Sunrise:

07:23

Sunset:

18:26

Day Length:

11 h. 3 min.

San Francisco in October

Minimum:

51.5°F

Average:

52.9°F

Maximum:

55.2°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 62.3°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 1.1°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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 63.6°F on 2023, while the historical minimum was 57.3°F on 2017.

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. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 61.7°F, the minimum temperature may reach 61.2°F, and the maximum might stay at 62.1°F.

Daily water temperature in San Francisco

Date	Current Year actual* / forecast**	last year	10 years average
Oct 6	63.6°F	65.0°F	62.7°F
Oct 7	64.2°F	64.9°F	62.9°F
Oct 8	65.0°F	65.3°F	62.8°F
Oct 9	63.7°F	64.5°F	62.5°F
Oct 10	63.0°F	64.2°F	62.2°F
Oct 11	62.6°F	63.9°F	62.2°F
Oct 12	62.4°F	64.8°F	62.0°F
Oct 13	62.4°F	65.0°F	61.7°F
Oct 14	62.1°F	64.5°F	61.6°F
Oct 15	62.5°F	64.1°F	61.4°F
Oct 16	62.5°F	63.6°F	61.2°F
Oct 17	63.0°F	63.2°F	61.1°F
Oct 18	63.0°F	63.2°F	61.2°F
Oct 19	63.3°F	62.9°F	61.3°F
Oct 20	62.3°F	62.8°F	61.3°F
Oct 21	62.1°F	62.6°F	61.0°F
Oct 22	62.0°F	63.2°F	60.9°F
Oct 23	61.8°F	63.6°F	60.8°F
Oct 24	62.0°F	63.5°F	60.9°F
Oct 25	61.4°F	63.4°F	60.4°F
Oct 26	61.2°F	62.5°F	60.1°F
Oct 27	61.4°F	63.0°F	60.4°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 September 11, 2026, reaching a 67.6°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, 56.6°F in Spring, 61.4°F in Summer, and 60.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Oakland	63.6°F	8mi
Redwood City	65.0°F	22mi
San Jose	62.3°F	42mi

* current water temperature in this city

** straight line distance from San Francisco