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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.
Sea temperature in San Francisco now

86.3

°F

October 23, 00:31

Trend:

decreasing

Yesterday:

86.3°F

Tomorrow:

86.1°F

Sunrise:

05:27

Sunset:

17:18

Day Length:

11 h. 51 min.

San Francisco in October

Minimum:

80.7°F

Average:

82.0°F

Maximum:

83.2°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 86.3°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 fall 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 86.6°F on 2023, while the historical minimum was 84.7°F on 2020.

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 85.9°F, the minimum temperature may reach 85.9°F, and the maximum might stay at 86.1°F.

Daily water temperature in San Francisco

Date Current Year

actual* / forecast**

 last year 10 years average
Oct 9 85.7°F 85.0°F 85.6°F
Oct 10 85.9°F 84.7°F 85.6°F
Oct 11 86.7°F 84.6°F 85.6°F
Oct 12 86.5°F 84.5°F 85.5°F
Oct 13 86.0°F 84.9°F 85.4°F
Oct 14 86.3°F 85.1°F 85.5°F
Oct 15 86.2°F 85.7°F 85.5°F
Oct 16 86.2°F 85.3°F 85.4°F
Oct 17 86.2°F 85.4°F 85.4°F
Oct 18 86.3°F 85.3°F 85.4°F
Oct 19 86.3°F 84.8°F 85.4°F
Oct 20 86.8°F 84.8°F 85.5°F
Oct 21 86.1°F 84.7°F 85.6°F
Oct 22 86.3°F 84.9°F 85.5°F
Oct 23 86.3°F 85.3°F 85.5°F
Oct 24 86.1°F 85.0°F 85.3°F
Oct 25 85.9°F 84.9°F 85.1°F
Oct 26 85.9°F 84.8°F 85.2°F
Oct 27 85.9°F 84.8°F 85.1°F
Oct 28 85.9°F 84.8°F 85.1°F
Oct 29 85.9°F 84.8°F 85.2°F
Oct 30 85.9°F 85.0°F 85.1°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

January

February

March

April

May

June

July

August

September

October

November

December

In San Francisco, the water temperature is comfortable for swimming all year round.
The warmest water in San Francisco was recorded on October 26, 2023, reaching a 87.6°F. While the coldest temperature occurred on February 23, 2019, dipping to 79.2°F. The average readings by season are 82.1°F in Winter, 82.9°F in Spring, 85.4°F in Summer, and 85.1°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
San Francisco 85.5°F 18mi
Madrid 86.0°F 37mi
San Francisco 85.2°F 43mi
San Jose 84.8°F 45mi
Santa Monica 86.0°F 51mi
Burgos 85.8°F 51mi
Medina 86.5°F 53mi
San Juan 85.4°F 55mi

* current water temperature in this city

** straight line distance from San Francisco