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

87.4

°F

April 19, 10:51

Trend:

increasing

Yesterday:

87.3°F

Tomorrow:

87.6°F

Sunrise:

05:53

Sunset:

18:15

Day Length:

12 h. 22 min.

San Jose in April

Minimum:

80.6°F

Average:

83.3°F

Maximum:

85.7°F

Sea water temperature in San Jose today

As of now, in San Jose, the water temperature is 87.4°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 1.7°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 rise a bit.

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 88.1°F on 2024, while the historical minimum was 84.0°F on 2015.

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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 87.8°F, with minimum temperature starting at 87.6°F, while the maximum might reach 88.0°F.

Daily water temperature in San Jose

Date Current Year

actual* / forecast**

last year 10 years average
Apr 5 84.8°F 86.5°F 84.6°F
Apr 6 84.8°F 86.2°F 84.7°F
Apr 7 84.5°F 86.8°F 84.7°F
Apr 8 84.3°F 85.7°F 84.6°F
Apr 9 85.3°F 86.8°F 84.8°F
Apr 10 85.6°F 86.5°F 84.8°F
Apr 11 85.9°F 86.1°F 84.9°F
Apr 12 86.5°F 86.2°F 85.0°F
Apr 13 86.4°F 86.5°F 85.2°F
Apr 14 86.7°F 86.8°F 85.4°F
Apr 15 86.8°F 86.6°F 85.5°F
Apr 16 87.2°F 86.4°F 85.5°F
Apr 17 86.8°F 86.8°F 85.5°F
Apr 18 87.3°F 87.1°F 85.6°F
Apr 19 87.4°F 88.1°F 85.7°F
Apr 20 87.6°F 88.1°F 85.9°F
Apr 21 87.6°F 87.2°F 85.9°F
Apr 22 87.8°F 87.7°F 86.1°F
Apr 23 87.7°F 87.2°F 86.0°F
Apr 24 87.8°F 87.9°F 86.1°F
Apr 25 88.0°F 88.2°F 86.3°F
Apr 26 87.8°F 88.0°F 86.1°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 San Jose, the water temperature is comfortable for swimming all year round.
The warmest water in San Jose was recorded on May 24, 2024, reaching a 89.5°F. While the coldest temperature occurred on February 28, 2016, dipping to 79.3°F. The average readings by season are 83.0°F in Winter, 85.2°F in Spring, 85.5°F in Summer, and 85.1°F in Autumn.