What is the current water temperature in San Diego?

Q: What is the current water temperature in San Diego?

As of now, in San Diego, the water temperature is 16.92°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

United States > San Diego

Water temperature in San Diego

Detailed information about the current water temperature in San Diego. 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.

62.5

°F

December 18, 00:55

Trend:

stable

Yesterday:

62.4°F

Tomorrow:

62.3°F

Sunrise:

06:45

Sunset:

16:45

Day Length:

10 h. 0 min.

San Diego in December

Minimum:

56.5°F

Average:

59.4°F

Maximum:

61.5°F

Sea water temperature in San Diego today

As of now, in San Diego, the water temperature is 62.5°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 2.2°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 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 63.0°F on 2015, while the historical minimum was 56.4°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 62.2°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 Diego

Date	Current Year actual* / forecast**	last year	10 years average
Dec 4	63.9°F	57.8°F	61.3°F
Dec 5	63.3°F	57.8°F	61.2°F
Dec 6	62.8°F	57.4°F	61.1°F
Dec 7	62.5°F	57.2°F	61.0°F
Dec 8	62.6°F	57.2°F	61.1°F
Dec 9	62.5°F	56.8°F	61.1°F
Dec 10	62.4°F	57.2°F	61.2°F
Dec 11	62.3°F	56.9°F	61.1°F
Dec 12	62.7°F	56.2°F	61.1°F
Dec 13	62.6°F	56.4°F	61.0°F
Dec 14	62.4°F	56.8°F	61.0°F
Dec 15	62.3°F	56.5°F	60.9°F
Dec 16	62.4°F	56.7°F	60.7°F
Dec 17	62.4°F	56.7°F	60.6°F
Dec 18	62.5°F	56.4°F	60.3°F
Dec 19	62.3°F	56.6°F	60.1°F
Dec 20	62.1°F	56.8°F	59.9°F
Dec 21	62.3°F	56.8°F	60.1°F
Dec 22	62.2°F	56.6°F	60.0°F
Dec 23	62.3°F	56.5°F	60.1°F
Dec 24	62.2°F	56.6°F	60.1°F
Dec 25	62.2°F	56.8°F	60.0°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 Diego by month

In an average year, San Diego offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in San Diego was recorded on August 7, 2018, reaching a 75.8°F. While the coldest temperature occurred on January 15, 2025, dipping to 55.5°F. The average readings by season are 59.7°F in Winter, 61.6°F in Spring, 68.3°F in Summer, and 66.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Tijuana	62.5°F	17mi
Oceanside	63.8°F	35mi
Laguna Beach	62.6°F	67mi

* current water temperature in this city

** straight line distance from San Diego