What is the current water temperature in San Francisco?

As of now, in San Francisco, the water temperature is 27.19°C. It's safe to say that the water is comfortably warm for various water-related activities.

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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.

80.9

°F

December 29, 03:51

Trend:

increasing

Yesterday:

80.5°F

Tomorrow:

81.0°F

Sunrise:

06:14

Sunset:

17:27

Day Length:

11 h. 13 min.

San Francisco in January

Minimum:

80.0°F

Average:

81.3°F

Maximum:

83.2°F

Sea water temperature in San Francisco today

As of now, in San Francisco, the water temperature is 80.9°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is about the same as 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 aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 83.1°F on 2015, while the historical minimum was 79.6°F on 2024.

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 81.1°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	81.2°F	80.1°F	81.3°F
Jan 2	81.1°F	80.2°F	81.2°F
Jan 3	81.2°F	80.2°F	81.2°F
Jan 4	81.1°F	80.1°F	81.2°F
Jan 5	81.1°F	80.0°F	81.1°F
Dec 15	83.2°F	80.5°F	81.8°F
Dec 16	83.1°F	80.6°F	81.7°F
Dec 17	82.8°F	80.5°F	81.7°F
Dec 18	82.5°F	80.4°F	81.6°F
Dec 19	82.1°F	80.4°F	81.6°F
Dec 20	82.4°F	80.4°F	81.7°F
Dec 21	81.8°F	80.4°F	81.6°F
Dec 22	82.3°F	80.3°F	81.6°F
Dec 23	82.2°F	80.2°F	81.5°F
Dec 24	82.3°F	80.2°F	81.5°F
Dec 25	82.0°F	80.1°F	81.4°F
Dec 26	81.8°F	79.9°F	81.2°F
Dec 27	81.6°F	79.7°F	81.1°F
Dec 28	80.5°F	79.6°F	81.0°F
Dec 29	80.9°F	79.6°F	81.0°F
Dec 30	81.0°F	79.7°F	81.1°F
Dec 31	81.0°F	79.9°F	81.1°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 September 17, 2024, reaching a 89.2°F. While the coldest temperature occurred on February 14, 2015, dipping to 78.7°F. The average readings by season are 81.0°F in Winter, 82.8°F in Spring, 84.8°F in Summer, and 85.0°F in Autumn.