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 17.89°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.

64.2

°F

October 10, 11:37

Trend:

stable

Yesterday:

64.5°F

Tomorrow:

64.3°F

Sunrise:

07:13

Sunset:

18:39

Day Length:

11 h. 26 min.

San Francisco in October

Minimum:

51.5°F

Average:

53.0°F

Maximum:

55.2°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 64.2°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 2.4°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 rise 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 64.4°F on 2023, while the historical minimum was 58.2°F on 2016.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 63.7°F, the minimum temperature may reach 63.2°F, and the maximum might stay at 64.3°F.

Daily water temperature in San Francisco

Date	Current Year actual* / forecast**	last year	10 years average
Sep 26	64.1°F	63.3°F	63.1°F
Sep 27	64.1°F	61.3°F	62.7°F
Sep 28	64.5°F	62.9°F	62.8°F
Sep 29	63.7°F	61.5°F	62.7°F
Sep 30	64.7°F	61.0°F	62.3°F
Oct 1	64.7°F	61.3°F	62.5°F
Oct 2	64.9°F	60.7°F	62.5°F
Oct 3	65.2°F	62.7°F	62.6°F
Oct 4	65.2°F	62.3°F	62.3°F
Oct 5	64.5°F	63.6°F	62.3°F
Oct 6	65.0°F	63.8°F	62.5°F
Oct 7	64.9°F	65.1°F	62.6°F
Oct 8	65.3°F	65.1°F	62.5°F
Oct 9	64.5°F	64.7°F	62.3°F
Oct 10	64.2°F	63.3°F	61.8°F
Oct 11	64.3°F	64.4°F	61.9°F
Oct 12	64.0°F	63.4°F	61.6°F
Oct 13	63.7°F	62.3°F	61.3°F
Oct 14	63.7°F	63.8°F	61.3°F
Oct 15	63.5°F	62.2°F	61.1°F
Oct 16	63.3°F	61.9°F	60.9°F
Oct 17	63.2°F	63.2°F	60.8°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	67.5°F	8mi
Redwood City	67.8°F	22mi
San Jose	66.0°F	42mi

* current water temperature in this city

** straight line distance from San Francisco