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 15.38°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.

59.7

°F

June 23, 22:07

Trend:

decreasing

Yesterday:

60.7°F

Tomorrow:

59.6°F

Sunrise:

05:48

Sunset:

20:35

Day Length:

14 h. 47 min.

San Francisco in June

Minimum:

50.9°F

Average:

52.8°F

Maximum:

56.7°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 59.7°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 0.6°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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 63.7°F on 2021, while the historical minimum was 57.0°F on 2016.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 59.8°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
Jun 9	59.0°F	57.2°F	59.6°F
Jun 10	59.6°F	58.4°F	59.8°F
Jun 11	59.3°F	58.5°F	59.7°F
Jun 12	60.9°F	60.2°F	60.1°F
Jun 13	60.5°F	60.1°F	59.8°F
Jun 14	60.3°F	59.6°F	59.8°F
Jun 15	60.5°F	61.2°F	60.0°F
Jun 16	60.9°F	60.4°F	60.0°F
Jun 17	61.1°F	60.8°F	59.9°F
Jun 18	61.2°F	61.0°F	60.1°F
Jun 19	61.7°F	61.2°F	60.2°F
Jun 20	62.0°F	60.4°F	60.2°F
Jun 21	62.2°F	58.9°F	59.8°F
Jun 22	60.7°F	58.2°F	59.9°F
Jun 23	59.7°F	59.7°F	60.3°F
Jun 24	59.6°F	58.2°F	60.3°F
Jun 25	59.3°F	57.9°F	60.0°F
Jun 26	59.8°F	58.5°F	60.4°F
Jun 27	60.0°F	59.0°F	60.6°F
Jun 28	59.8°F	59.3°F	60.4°F
Jun 29	60.2°F	59.5°F	60.8°F
Jun 30	59.8°F	59.4°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 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	63.8°F	8mi
Redwood City	64.3°F	22mi
San Jose	65.3°F	42mi

* current water temperature in this city

** straight line distance from San Francisco