What is the current water temperature in San Diego?

As of now, in San Diego, the water temperature is 23.54°F. It's safe to say that the water is comfortably warm for various water-related activities.

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.

74.4

°F

August 29, 02:01

Trend:

stable

Yesterday:

73.3°F

Tomorrow:

74.4°F

Sunrise:

06:21

Sunset:

19:17

Day Length:

12 h. 56 min.

San Diego in September

Minimum:

56.4°F

Average:

59.5°F

Maximum:

62.2°F

Sea water temperature in San Diego today

As of now, in San Diego, the water temperature is 74.4°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 5.0°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable 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 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 71.9°F on 2022, while the historical minimum was 64.9°F on 2023.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 74.6°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
Aug 15	71.2°F	68.1°F	70.4°F
Aug 16	71.0°F	67.6°F	70.2°F
Aug 17	70.3°F	67.6°F	70.1°F
Aug 18	69.4°F	68.4°F	70.3°F
Aug 19	67.8°F	69.5°F	70.2°F
Aug 20	67.9°F	70.3°F	70.3°F
Aug 21	69.1°F	70.6°F	70.3°F
Aug 22	69.5°F	71.1°F	70.2°F
Aug 23	69.9°F	71.9°F	70.5°F
Aug 24	70.7°F	72.1°F	70.6°F
Aug 25	71.3°F	72.4°F	70.9°F
Aug 26	72.7°F	71.7°F	70.7°F
Aug 27	73.1°F	71.7°F	70.4°F
Aug 28	73.3°F	72.0°F	70.2°F
Aug 29	74.4°F	71.3°F	69.4°F
Aug 30	74.4°F	71.4°F	69.4°F
Aug 31	74.3°F	70.9°F	69.3°F
Sep 1	74.3°F	70.5°F	69.3°F
Sep 2	74.3°F	70.5°F	69.3°F
Sep 3	74.6°F	69.9°F	69.6°F
Sep 4	75.1°F	69.6°F	70.1°F
Sep 5	75.2°F	69.7°F	70.2°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	73.6°F	17mi
Oceanside	77.1°F	35mi
Laguna Beach	76.4°F	67mi

* current water temperature in this city

** straight line distance from San Diego