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 21.8°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.

71.2

°F

August 7, 19:50

Trend:

stable

Yesterday:

72.5°F

Tomorrow:

71.7°F

Sunrise:

06:07

Sunset:

19:42

Day Length:

13 h. 35 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 71.2°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 1.9°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 rise a bit.

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 75.8°F on 2018, while the historical minimum was 63.4°F on 2021.

latest data

last year

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 suggests a gradual increase. The average temperature is expected to rise up to 72.2°F, with minimum temperature starting at 71.7°F, while the maximum might reach 72.8°F.

Daily water temperature in San Diego

Date	Current Year actual* / forecast**	last year	10 years average
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	69.5°F
Jul 30	73.9°F	64.4°F	69.3°F
Jul 31	73.9°F	63.8°F	69.1°F
Aug 1	74.3°F	63.3°F	69.4°F
Aug 2	74.9°F	64.2°F	69.5°F
Aug 3	75.4°F	64.9°F	69.5°F
Aug 4	75.1°F	65.2°F	69.5°F
Aug 5	74.6°F	66.7°F	69.5°F
Aug 6	72.5°F	67.3°F	69.4°F
Aug 7	71.2°F	68.3°F	69.3°F
Aug 8	71.7°F	68.5°F	69.8°F
Aug 9	72.0°F	68.8°F	70.1°F
Aug 10	72.4°F	69.2°F	70.5°F
Aug 11	72.8°F	69.5°F	70.8°F
Aug 12	72.3°F	66.7°F	70.4°F
Aug 13	72.3°F	67.6°F	70.4°F
Aug 14	72.2°F	68.1°F	70.3°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	71.4°F	17mi
Oceanside	75.6°F	35mi
Laguna Beach	74.9°F	67mi

* current water temperature in this city

** straight line distance from San Diego