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 18.45°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.

65.2

°F

August 4, 23:15

Trend:

stable

Yesterday:

64.9°F

Tomorrow:

65.1°F

Sunrise:

06:05

Sunset:

19:45

Day Length:

13 h. 40 min.

San Diego in August

Minimum:

56.6°F

Average:

59.4°F

Maximum:

61.8°F

Sea water temperature in San Diego today

As of now, in San Diego, the water temperature is 65.2°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 4.4°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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 75.1°F on 2018, while the historical minimum was 61.9°F on 2021.

latest data

last year

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 minimum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 65.6°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
Jul 21	68.5°F	66.6°F	69.7°F
Jul 22	68.4°F	65.6°F	69.6°F
Jul 23	68.9°F	65.3°F	69.5°F
Jul 24	69.2°F	65.8°F	69.7°F
Jul 25	68.9°F	66.3°F	69.9°F
Jul 26	67.2°F	66.5°F	69.8°F
Jul 27	65.7°F	65.7°F	69.8°F
Jul 28	65.2°F	65.2°F	69.8°F
Jul 29	64.5°F	65.5°F	69.4°F
Jul 30	64.4°F	65.1°F	69.1°F
Jul 31	63.8°F	64.8°F	69.0°F
Aug 1	63.3°F	65.1°F	69.2°F
Aug 2	64.2°F	64.4°F	69.2°F
Aug 3	64.9°F	64.1°F	69.1°F
Aug 4	65.2°F	63.8°F	69.6°F
Aug 5	65.1°F	63.6°F	69.5°F
Aug 6	65.1°F	64.0°F	69.5°F
Aug 7	65.2°F	64.7°F	69.6°F
Aug 8	65.6°F	66.4°F	70.0°F
Aug 9	65.6°F	67.8°F	70.0°F
Aug 10	66.0°F	68.2°F	70.4°F
Aug 11	66.3°F	68.6°F	70.8°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 66.4°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Tijuana	66.8°F	17mi
Oceanside	69.2°F	35mi
Laguna Beach	67.6°F	67mi

* current water temperature in this city

** straight line distance from San Diego