What is the current water temperature in San Jose?

Q: What is the current water temperature in San Jose?

As of now, in San Jose, the water temperature is 15.84°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 Jose

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.

60.5

°F

April 17, 21:27

Trend:

stable

Yesterday:

60.9°F

Tomorrow:

60.7°F

Sunrise:

06:30

Sunset:

19:44

Day Length:

13 h. 14 min.

San Jose in April

Minimum:

51.9°F

Average:

53.2°F

Maximum:

54.8°F

Sea water temperature in San Jose today

As of now, in San Jose, the water temperature is 60.5°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 2.7°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 60.6°F on 2018, while the historical minimum was 54.4°F on 2015.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 61.3°F, with minimum temperature starting at 60.7°F, while the maximum might reach 62.0°F.

Daily water temperature in San Jose

Date	Current Year actual* / forecast**	last year	10 years average
Apr 3	56.8°F	59.0°F	57.1°F
Apr 4	56.0°F	59.3°F	57.0°F
Apr 5	56.2°F	58.7°F	56.6°F
Apr 6	56.4°F	58.3°F	56.6°F
Apr 7	57.6°F	57.7°F	56.7°F
Apr 8	57.4°F	57.4°F	56.8°F
Apr 9	57.6°F	58.1°F	57.1°F
Apr 10	58.6°F	58.5°F	57.6°F
Apr 11	59.5°F	58.5°F	57.6°F
Apr 12	58.8°F	59.3°F	57.9°F
Apr 13	59.0°F	59.5°F	57.8°F
Apr 14	61.2°F	58.9°F	57.9°F
Apr 15	61.4°F	58.6°F	57.9°F
Apr 16	60.9°F	58.5°F	57.9°F
Apr 17	60.5°F	58.7°F	57.8°F
Apr 18	60.7°F	58.8°F	58.0°F
Apr 19	60.9°F	60.4°F	58.2°F
Apr 20	61.2°F	61.4°F	58.4°F
Apr 21	61.4°F	61.8°F	58.7°F
Apr 22	61.4°F	63.1°F	58.7°F
Apr 23	61.8°F	64.4°F	59.1°F
Apr 24	62.0°F	66.0°F	59.3°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, 57.8°F in Spring, 63.9°F in Summer, and 61.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Redwood City	61.4°F	21mi
Oakland	60.6°F	38mi
San Francisco	58.7°F	42mi
Monterey	54.2°F	51mi

* current water temperature in this city

** straight line distance from San Jose