All data are in degrees Fahrenheit

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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

83.2

°F

December 13, 06:06

Trend:

stable

Yesterday:

83.0°F

Tomorrow:

83.2°F

Sunrise:

05:58

Sunset:

17:20

Day Length:

11 h. 22 min.

San Francisco in December

Minimum:

79.1°F

Average:

81.3°F

Maximum:

82.8°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 83.2°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 0.2°F lower 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 is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 84.5°F on 2023, while the historical minimum was 82.6°F on 2021.

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. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 82.8°F, the minimum temperature may reach 82.3°F, and the maximum might stay at 83.2°F.

Daily water temperature in San Francisco

Date Current Year

actual* / forecast**

last year 10 years average
Nov 29 84.2°F 84.5°F 83.8°F
Nov 30 84.5°F 84.1°F 83.6°F
Dec 1 84.4°F 83.7°F 83.6°F
Dec 2 84.7°F 83.4°F 83.5°F
Dec 3 85.0°F 83.3°F 83.5°F
Dec 4 85.4°F 83.4°F 83.4°F
Dec 5 85.0°F 83.6°F 83.4°F
Dec 6 84.7°F 84.1°F 83.4°F
Dec 7 84.3°F 83.9°F 83.4°F
Dec 8 84.0°F 83.9°F 83.3°F
Dec 9 83.7°F 83.7°F 83.3°F
Dec 10 83.4°F 83.4°F 83.1°F
Dec 11 83.2°F 83.4°F 83.2°F
Dec 12 83.0°F 83.4°F 83.2°F
Dec 13 83.2°F 83.3°F 83.4°F
Dec 14 83.2°F 83.6°F 83.4°F
Dec 15 83.2°F 83.5°F 83.4°F
Dec 16 83.0°F 83.3°F 83.2°F
Dec 17 82.8°F 83.1°F 83.0°F
Dec 18 82.6°F 82.9°F 82.8°F
Dec 19 82.6°F 82.9°F 82.8°F
Dec 20 82.3°F 82.8°F 82.5°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 San Francisco, the water temperature is comfortable for swimming all year round.
The warmest water in San Francisco was recorded on June 15, 2024, reaching a 88.6°F. While the coldest temperature occurred on January 13, 2015, dipping to 78.9°F. The average readings by season are 81.8°F in Winter, 84.0°F in Spring, 85.8°F in Summer, and 84.8°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Santo Domingo 83.1°F 6mi
Padang 83.1°F 7mi
San Francisco 82.7°F 19mi
San Jose 81.7°F 26mi
San Sebastian 82.9°F 30mi
San Jose 82.9°F 31mi

* current water temperature in this city

** straight line distance from San Francisco