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 12.51°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.

54.5

°F

January 29, 04:34

Trend:

stable

Yesterday:

53.7°F

Tomorrow:

54.5°F

Sunrise:

07:16

Sunset:

17:30

Day Length:

10 h. 14 min.

San Francisco in February

Minimum:

51.0°F

Average:

52.7°F

Maximum:

55.5°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 54.5°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 1.5°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature slightly varies from the average of the past two weeks. 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 56.4°F on 2024, while the historical minimum was 50.8°F on 2021.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 54.7°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
Jan 15	54.0°F	52.4°F	52.7°F
Jan 16	54.2°F	52.5°F	52.8°F
Jan 17	54.2°F	52.9°F	53.0°F
Jan 18	54.6°F	53.0°F	53.0°F
Jan 19	55.0°F	53.0°F	53.0°F
Jan 20	55.1°F	52.4°F	53.0°F
Jan 21	55.0°F	53.2°F	53.1°F
Jan 22	55.0°F	51.9°F	52.9°F
Jan 23	55.2°F	51.9°F	53.0°F
Jan 24	54.7°F	51.9°F	52.9°F
Jan 25	54.9°F	52.1°F	53.0°F
Jan 26	54.2°F	52.2°F	52.9°F
Jan 27	54.1°F	52.1°F	53.1°F
Jan 28	53.7°F	51.7°F	52.9°F
Jan 29	54.5°F	52.0°F	53.0°F
Jan 30	54.5°F	52.0°F	52.9°F
Jan 31	54.5°F	53.1°F	53.0°F
Feb 1	54.5°F	53.2°F	53.0°F
Feb 2	54.7°F	53.2°F	53.2°F
Feb 3	54.9°F	53.2°F	53.4°F
Feb 4	55.0°F	53.3°F	53.4°F
Feb 5	55.1°F	53.3°F	53.5°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, 56.4°F in Spring, 61.2°F in Summer, and 60.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Oakland	53.9°F	8mi
Redwood City	53.7°F	22mi
San Jose	52.7°F	42mi

* current water temperature in this city

** straight line distance from San Francisco