All data are in degrees Fahrenheit

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Water temperature in San Jose

Detailed information about the current water temperature in San Jose. 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 Jose now

68.3

°F

August 15, 19:36

Trend:

increasing

Yesterday:

68.3°F

Tomorrow:

68.4°F

Sunrise:

06:24

Sunset:

20:00

Day Length:

13 h. 36 min.

San Jose in August

Minimum:

51.8°F

Average:

52.9°F

Maximum:

54.9°F

Sea water temperature in San Jose today

As of now, in San Jose, the water temperature is 68.3°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 4.1°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 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 69.3°F on 2023, while the historical minimum was 58.7°F on 2016.

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 68.7°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 Jose

Date Current Year

actual* / forecast**

last year 10 years average
Aug 1 64.1°F 68.7°F 64.8°F
Aug 2 63.7°F 68.4°F 64.5°F
Aug 3 62.3°F 69.0°F 64.5°F
Aug 4 62.4°F 68.5°F 64.4°F
Aug 5 62.9°F 67.7°F 64.6°F
Aug 6 63.9°F 68.0°F 64.7°F
Aug 7 64.5°F 68.1°F 64.5°F
Aug 8 65.6°F 68.6°F 64.6°F
Aug 9 65.4°F 68.6°F 64.4°F
Aug 10 64.9°F 68.2°F 63.9°F
Aug 11 64.9°F 68.1°F 63.8°F
Aug 12 69.5°F 68.6°F 64.3°F
Aug 13 68.5°F 68.7°F 64.4°F
Aug 14 68.3°F 68.8°F 64.6°F
Aug 15 68.3°F 68.5°F 64.3°F
Aug 16 68.4°F 66.0°F 64.3°F
Aug 17 68.6°F 66.5°F 64.5°F
Aug 18 68.6°F 66.7°F 64.6°F
Aug 19 68.5°F 66.0°F 64.4°F
Aug 20 68.7°F 66.5°F 64.6°F
Aug 21 68.9°F 66.4°F 64.8°F
Aug 22 69.2°F 68.2°F 65.1°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 Jose by month

In an average year, San Jose offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in San Jose was recorded on October 7, 2024, reaching a 73.9°F. While the coldest temperature occurred on January 23, 2025, dipping to 50.5°F. The average readings by season are 53.8°F in Winter, 57.9°F in Spring, 64.0°F in Summer, and 61.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Redwood City 70.4°F 21mi
Oakland 67.0°F 38mi
San Francisco 64.7°F 42mi
Monterey 60.5°F 51mi

* current water temperature in this city

** straight line distance from San Jose