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 30.61°C. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort.

Philippines > 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.

87.1

°F

October 6, 01:56

Trend:

stable

Yesterday:

87.3°F

Tomorrow:

87.3°F

Sunrise:

05:31

Sunset:

17:31

Day Length:

12 h. 0 min.

San Francisco in October

Minimum:

81.5°F

Average:

83.0°F

Maximum:

84.4°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 87.1°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 0.8°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 closely matches the previous two weeks' average, indicating a stable trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 87.8°F on 2019, while the historical minimum was 83.7°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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 87.0°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
Sep 22	86.2°F	86.0°F	86.0°F
Sep 23	86.5°F	86.3°F	86.1°F
Sep 24	86.1°F	85.7°F	86.0°F
Sep 25	86.9°F	85.5°F	86.1°F
Sep 26	86.5°F	85.4°F	86.0°F
Sep 27	87.0°F	85.5°F	86.1°F
Sep 28	87.1°F	85.4°F	86.0°F
Sep 29	87.1°F	85.4°F	86.1°F
Sep 30	87.4°F	85.5°F	86.1°F
Oct 1	87.9°F	85.6°F	86.1°F
Oct 2	88.1°F	85.7°F	86.4°F
Oct 3	87.7°F	85.8°F	86.3°F
Oct 4	87.7°F	85.8°F	86.3°F
Oct 5	87.3°F	86.8°F	86.4°F
Oct 6	87.1°F	86.3°F	86.3°F
Oct 7	87.3°F	86.3°F	86.5°F
Oct 8	87.2°F	86.0°F	86.4°F
Oct 9	87.1°F	85.8°F	86.2°F
Oct 10	87.0°F	85.6°F	86.2°F
Oct 11	86.9°F	85.3°F	86.1°F
Oct 12	86.9°F	85.2°F	86.0°F
Oct 13	86.8°F	85.3°F	86.0°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 San Francisco, the water temperature is comfortable for swimming all year round.

The warmest water in San Francisco was recorded on June 13, 2026, reaching a 90.0°F. While the coldest temperature occurred on January 29, 2019, dipping to 80.1°F. The average readings by season are 83.2°F in Winter, 85.0°F in Spring, 86.4°F in Summer, and 85.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Trinidad	86.9°F	6mi
Santiago	87.0°F	30mi
Cebu City	86.3°F	31mi
San Francisco	87.0°F	34mi

* current water temperature in this city

** straight line distance from San Francisco