All data are in degrees Fahrenheit

en

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

83.4

°F

December 25, 05:02

Trend:

decreasing

Yesterday:

83.5°F

Tomorrow:

83.4°F

Sunrise:

05:51

Sunset:

17:25

Day Length:

11 h. 34 min.

San Francisco in January

Minimum:

80.4°F

Average:

82.0°F

Maximum:

82.8°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 83.4°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 1.4°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 stay about the same.

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 83.0°F on 2022, while the historical minimum was 79.0°F on 2018.

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 83.4°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 1 83.4°F 82.5°F 82.0°F
Dec 11 83.7°F 83.8°F 83.3°F
Dec 12 83.5°F 83.5°F 83.4°F
Dec 13 83.5°F 83.1°F 83.2°F
Dec 14 83.4°F 83.4°F 83.1°F
Dec 15 83.6°F 83.2°F 83.0°F
Dec 16 83.9°F 83.1°F 82.9°F
Dec 17 83.8°F 83.0°F 82.9°F
Dec 18 83.8°F 83.0°F 82.8°F
Dec 19 83.7°F 82.9°F 82.8°F
Dec 20 83.6°F 82.9°F 82.6°F
Dec 21 83.8°F 83.0°F 82.5°F
Dec 22 83.6°F 83.0°F 82.4°F
Dec 23 83.5°F 82.9°F 82.2°F
Dec 24 83.5°F 82.7°F 82.0°F
Dec 25 83.4°F 82.5°F 82.0°F
Dec 26 83.4°F 82.3°F 82.0°F
Dec 27 83.3°F 82.0°F 81.9°F
Dec 28 83.3°F 82.0°F 81.9°F
Dec 29 83.4°F 82.2°F 82.0°F
Dec 30 83.5°F 82.3°F 82.1°F
Dec 31 83.5°F 82.6°F 82.1°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

In San Francisco, the water temperature is comfortable for swimming all year round.
The warmest water in San Francisco was recorded on October 7, 2023, reaching a 86.8°F. While the coldest temperature occurred on December 23, 2018, dipping to 78.5°F. The average readings by season are 81.9°F in Winter, 82.9°F in Spring, 84.9°F in Summer, and 84.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
San Francisco 83.8°F 18mi
San Francisco 83.6°F 27mi
San Jose 83.5°F 29mi
San Juan 83.6°F 38mi
Santa Monica 83.9°F 45mi
Madrid 83.9°F 51mi

* current water temperature in this city

** straight line distance from San Francisco