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 13.29°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

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.

55.9

°F

January 21, 16:31

Trend:

increasing

Yesterday:

55.8°F

Tomorrow:

56.1°F

Sunrise:

06:49

Sunset:

17:11

Day Length:

10 h. 22 min.

San Diego in January

Minimum:

56.2°F

Average:

59.6°F

Maximum:

61.8°F

Sea water temperature in San Diego today

As of now, in San Diego, the water temperature is 55.9°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 3.6°F lower than 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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 61.7°F on 2015, while the historical minimum was 58.0°F on 2021.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest 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 55.9°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
Jan 7	56.0°F	60.7°F	59.3°F
Jan 8	56.6°F	60.2°F	59.4°F
Jan 9	56.4°F	60.1°F	59.4°F
Jan 10	56.8°F	59.9°F	59.4°F
Jan 11	57.0°F	60.1°F	59.4°F
Jan 12	56.5°F	59.8°F	59.4°F
Jan 13	55.9°F	58.7°F	59.2°F
Jan 14	55.5°F	58.2°F	59.0°F
Jan 15	55.5°F	57.8°F	59.1°F
Jan 16	55.6°F	57.6°F	59.0°F
Jan 17	55.7°F	57.7°F	59.0°F
Jan 18	55.8°F	58.1°F	59.2°F
Jan 19	55.9°F	58.2°F	59.2°F
Jan 20	55.8°F	58.4°F	59.2°F
Jan 21	55.9°F	58.3°F	59.5°F
Jan 22	56.1°F	58.9°F	59.6°F
Jan 23	55.9°F	58.6°F	59.5°F
Jan 24	56.0°F	59.7°F	59.6°F
Jan 25	55.8°F	59.4°F	59.4°F
Jan 26	55.9°F	59.7°F	59.5°F
Jan 27	55.8°F	60.0°F	59.4°F
Jan 28	55.7°F	59.7°F	59.2°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 59.8°F in Winter, 61.8°F in Spring, 68.5°F in Summer, and 66.4°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Tijuana	55.8°F	17mi
Oceanside	56.9°F	35mi
Laguna Beach	57.8°F	67mi

* current water temperature in this city

** straight line distance from San Diego