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 17.32°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.

63.2

°F

May 8, 05:55

Trend:

increasing

Yesterday:

62.6°F

Tomorrow:

63.5°F

Sunrise:

05:55

Sunset:

19:35

Day Length:

13 h. 40 min.

San Diego in May

Minimum:

56.2°F

Average:

59.6°F

Maximum:

62.5°F

Sea water temperature in San Diego today

As of now, in San Diego, the water temperature is 63.2°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 about the same as 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 rise a bit.

Recent sea temperature and forecast

Today's reading indicates a minor change compared to the average water temperature of the last two weeks, but the overall trend remains steady. 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 65.3°F on 2020, while the historical minimum was 60.8°F on 2025.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 63.8°F, with minimum temperature starting at 63.5°F, while the maximum might reach 64.1°F.

Daily water temperature in San Diego

Date	Current Year actual* / forecast**	last year	10 years average
Apr 24	64.8°F	59.4°F	61.2°F
Apr 25	64.5°F	59.5°F	61.4°F
Apr 26	64.3°F	59.1°F	61.5°F
Apr 27	63.7°F	59.4°F	61.5°F
Apr 28	63.8°F	59.9°F	61.7°F
Apr 29	63.4°F	60.1°F	62.0°F
Apr 30	62.8°F	60.4°F	62.0°F
May 1	62.5°F	60.4°F	62.1°F
May 2	62.2°F	60.4°F	62.2°F
May 3	62.3°F	60.6°F	62.6°F
May 4	63.0°F	60.5°F	63.0°F
May 5	62.6°F	59.3°F	63.2°F
May 6	62.8°F	59.9°F	63.2°F
May 7	62.6°F	61.0°F	63.0°F
May 8	63.2°F	60.8°F	63.0°F
May 9	63.5°F	61.3°F	63.3°F
May 10	63.9°F	61.8°F	63.8°F
May 11	64.1°F	61.9°F	63.9°F
May 12	64.0°F	61.9°F	63.9°F
May 13	63.8°F	62.2°F	63.7°F
May 14	63.8°F	62.2°F	63.6°F
May 15	63.6°F	62.1°F	63.5°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, 68.2°F in Summer, and 65.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Tijuana	62.1°F	17mi
Oceanside	65.4°F	35mi
Laguna Beach	61.9°F	67mi

* current water temperature in this city

** straight line distance from San Diego