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 12.46°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.

54.4

°F

February 21, 19:01

Trend:

stable

Yesterday:

55.0°F

Tomorrow:

54.6°F

Sunrise:

06:50

Sunset:

17:53

Day Length:

11 h. 3 min.

San Jose in February

Minimum:

52.2°F

Average:

53.3°F

Maximum:

55.0°F

Sea water temperature in San Jose today

As of now, in San Jose, the water temperature is 54.4°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 0.7°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 considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 54.7°F on 2022, while the historical minimum was 51.7°F on 2023.

latest data

last year

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 55.0°F, with minimum temperature starting at 54.6°F, while the maximum might reach 55.4°F.

Daily water temperature in San Jose

Date	Current Year actual* / forecast**	last year	10 years average
Feb 7	57.0°F	52.1°F	53.2°F
Feb 8	56.9°F	52.2°F	53.5°F
Feb 9	57.2°F	52.5°F	53.7°F
Feb 10	57.1°F	52.4°F	53.9°F
Feb 11	56.9°F	52.0°F	53.8°F
Feb 12	56.7°F	52.1°F	53.9°F
Feb 13	56.7°F	52.1°F	53.8°F
Feb 14	56.4°F	52.1°F	54.0°F
Feb 15	56.1°F	52.7°F	54.0°F
Feb 16	56.3°F	52.6°F	54.0°F
Feb 17	56.2°F	52.7°F	53.9°F
Feb 18	56.1°F	52.5°F	53.8°F
Feb 19	55.7°F	52.8°F	53.9°F
Feb 20	55.0°F	52.8°F	53.9°F
Feb 21	54.4°F	53.2°F	53.7°F
Feb 22	54.6°F	53.9°F	53.9°F
Feb 23	54.6°F	54.6°F	54.0°F
Feb 24	54.8°F	55.0°F	54.1°F
Feb 25	54.9°F	55.0°F	54.2°F
Feb 26	55.2°F	54.9°F	54.5°F
Feb 27	55.3°F	55.8°F	54.6°F
Feb 28	55.4°F	56.4°F	54.7°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 53.7°F in Winter, 58.2°F in Spring, 64.6°F in Summer, and 62.4°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Redwood City	53.5°F	21mi
Oakland	53.8°F	38mi
San Francisco	54.6°F	42mi
Monterey	56.4°F	51mi

* current water temperature in this city

** straight line distance from San Jose