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

64.5

°F

October 24, 10:35

Trend:

stable

Yesterday:

65.3°F

Tomorrow:

64.6°F

Sunrise:

07:00

Sunset:

18:06

Day Length:

11 h. 6 min.

San Diego in October

Minimum:

56.8°F

Average:

59.4°F

Maximum:

61.8°F

Sea water temperature in San Diego today

As of now, in San Diego, the water temperature is 64.5°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 1.6°F lower 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 considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 71.6°F on 2015, while the historical minimum was 63.1°F on 2021.

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 64.3°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
Oct 10 67.1°F 65.5°F 67.5°F
Oct 11 66.5°F 65.7°F 67.4°F
Oct 12 66.5°F 64.7°F 67.2°F
Oct 13 66.7°F 63.4°F 67.0°F
Oct 14 66.0°F 63.1°F 66.8°F
Oct 15 65.6°F 62.4°F 66.6°F
Oct 16 65.6°F 62.3°F 66.5°F
Oct 17 65.6°F 62.3°F 66.4°F
Oct 18 65.5°F 62.7°F 66.5°F
Oct 19 65.6°F 62.7°F 66.6°F
Oct 20 65.1°F 63.1°F 66.4°F
Oct 21 64.4°F 63.4°F 66.5°F
Oct 22 64.2°F 63.3°F 66.3°F
Oct 23 65.3°F 63.6°F 66.3°F
Oct 24 64.5°F 63.2°F 66.1°F
Oct 25 64.6°F 63.4°F 66.2°F
Oct 26 64.7°F 64.3°F 66.3°F
Oct 27 64.5°F 64.2°F 66.1°F
Oct 28 64.3°F 64.4°F 65.9°F
Oct 29 64.1°F 64.5°F 65.8°F
Oct 30 64.0°F 64.1°F 65.6°F
Oct 31 64.0°F 64.2°F 65.6°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 59.7°F in Winter, 61.6°F in Spring, 68.3°F in Summer, and 66.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Tijuana 63.5°F 17mi
Oceanside 64.0°F 35mi
Laguna Beach 64.4°F 67mi

* current water temperature in this city

** straight line distance from San Diego