What is the current water temperature in San Diego?

As of now, in San Diego, the water temperature is 23.0°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.

73.4

°F

October 14, 08:09

Trend:

decreasing

Yesterday:

73.5°F

Tomorrow:

73.2°F

Sunrise:

06:52

Sunset:

18:17

Day Length:

11 h. 25 min.

San Diego in October

Minimum:

56.8°F

Average:

59.5°F

Maximum:

62.0°F

Sea water temperature in San Diego today

As of now, in San Diego, the water temperature is 73.4°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 7.2°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 slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 68.3°F on 2017, while the historical minimum was 62.5°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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 73.1°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
Sep 30	72.8°F	67.8°F	67.8°F
Oct 1	72.4°F	67.4°F	67.6°F
Oct 2	72.8°F	66.9°F	67.5°F
Oct 3	73.6°F	67.5°F	67.3°F
Oct 4	73.2°F	66.7°F	67.1°F
Oct 5	74.7°F	66.6°F	67.6°F
Oct 6	74.3°F	66.4°F	67.7°F
Oct 7	74.0°F	66.6°F	67.7°F
Oct 8	74.3°F	67.2°F	67.7°F
Oct 9	75.0°F	67.7°F	67.9°F
Oct 10	74.3°F	67.1°F	67.7°F
Oct 11	74.6°F	66.5°F	67.7°F
Oct 12	73.8°F	66.5°F	67.3°F
Oct 13	73.5°F	66.7°F	67.0°F
Oct 14	73.4°F	66.0°F	66.2°F
Oct 15	73.2°F	65.6°F	66.0°F
Oct 16	73.1°F	65.6°F	65.8°F
Oct 17	73.0°F	65.6°F	65.8°F
Oct 18	73.1°F	65.5°F	65.9°F
Oct 19	73.2°F	65.6°F	66.0°F
Oct 20	73.1°F	65.1°F	65.9°F
Oct 21	73.2°F	64.4°F	66.0°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, 68.4°F in Summer, and 66.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Tijuana	72.2°F	17mi
Oceanside	72.6°F	35mi
Laguna Beach	71.5°F	67mi

* current water temperature in this city

** straight line distance from San Diego