All data are in degrees Fahrenheit

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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.
Sea temperature in San Diego now

75.1

°F

August 4, 18:53

Trend:

stable

Yesterday:

75.4°F

Tomorrow:

75.1°F

Sunrise:

06:05

Sunset:

19:45

Day Length:

13 h. 40 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 75.1°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 6.1°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 stay about the same.

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 75.1°F on 2018, while the historical minimum was 61.9°F on 2021.

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 75.9°F, with minimum temperature starting at 75.1°F, while the maximum might reach 76.9°F.

Daily water temperature in San Diego

Date Current Year

actual* / forecast**

last year 10 years average
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 69.5°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 69.0°F
Aug 5 75.1°F 66.7°F 69.0°F
Aug 6 75.2°F 67.3°F 69.1°F
Aug 7 75.4°F 68.3°F 69.3°F
Aug 8 75.9°F 68.5°F 69.8°F
Aug 9 76.1°F 68.8°F 70.1°F
Aug 10 76.6°F 69.2°F 70.5°F
Aug 11 76.9°F 69.5°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 59.6°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 73.5°F 17mi
Oceanside 75.5°F 35mi
Laguna Beach 75.0°F 67mi

* current water temperature in this city

** straight line distance from San Diego