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 22.81°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

73.1

°F

July 29, 14:28

Trend:

decreasing

Yesterday:

73.2°F

Tomorrow:

72.7°F

Sunrise:

06:00

Sunset:

19:49

Day Length:

13 h. 49 min.

San Diego in August

Minimum:

56.6°F

Average:

59.5°F

Maximum:

62.5°F

Sea water temperature in San Diego today

As of now, in San Diego, the water temperature is 73.1°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 3.9°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 notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 73.7°F on 2016, while the historical minimum was 64.5°F on 2025.

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 maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 72.7°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 15	69.9°F	66.6°F	69.0°F
Jul 16	70.0°F	66.5°F	69.0°F
Jul 17	70.0°F	67.0°F	69.2°F
Jul 18	70.0°F	67.9°F	69.6°F
Jul 19	70.5°F	68.1°F	69.9°F
Jul 20	70.7°F	68.5°F	70.0°F
Jul 21	71.5°F	68.5°F	70.0°F
Jul 22	72.8°F	68.4°F	69.9°F
Jul 23	73.6°F	68.9°F	69.8°F
Jul 24	73.2°F	69.2°F	69.8°F
Jul 25	72.6°F	68.9°F	70.0°F
Jul 26	71.9°F	67.2°F	69.9°F
Jul 27	72.6°F	65.7°F	69.8°F
Jul 28	73.2°F	65.2°F	69.9°F
Jul 29	73.1°F	64.5°F	69.2°F
Jul 30	72.7°F	64.4°F	68.9°F
Jul 31	72.5°F	63.8°F	68.6°F
Aug 1	72.7°F	63.3°F	68.9°F
Aug 2	72.8°F	64.2°F	69.0°F
Aug 3	72.7°F	64.9°F	68.9°F
Aug 4	72.8°F	65.2°F	69.0°F
Aug 5	72.9°F	66.7°F	69.0°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 59.6°F in Winter, 61.7°F in Spring, 68.3°F in Summer, and 65.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Tijuana	73.3°F	17mi
Oceanside	75.6°F	35mi
Laguna Beach	74.8°F	67mi

* current water temperature in this city

** straight line distance from San Diego