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 13.38°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.

56.1

°F

December 5, 10:18

Trend:

decreasing

Yesterday:

56.4°F

Tomorrow:

55.9°F

Sunrise:

07:07

Sunset:

16:50

Day Length:

9 h. 43 min.

San Jose in December

Minimum:

52.4°F

Average:

53.2°F

Maximum:

55.5°F

Sea water temperature in San Jose today

As of now, in San Jose, the water temperature is 56.1°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 0.5°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 fall 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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 57.1°F on 2017, while the historical minimum was 53.4°F on 2022.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 55.5°F, the minimum temperature may reach 55.2°F, and the maximum might stay at 55.9°F.

Daily water temperature in San Jose

Date	Current Year actual* / forecast**	last year	10 years average
Nov 21	60.2°F	55.7°F	57.8°F
Nov 22	59.9°F	55.7°F	57.8°F
Nov 23	59.8°F	55.6°F	57.6°F
Nov 24	57.9°F	55.6°F	57.2°F
Nov 25	58.2°F	55.2°F	56.9°F
Nov 26	58.2°F	55.2°F	56.4°F
Nov 27	58.0°F	55.2°F	56.6°F
Nov 28	57.8°F	55.2°F	56.6°F
Nov 29	57.6°F	54.2°F	56.4°F
Nov 30	57.1°F	54.6°F	56.3°F
Dec 1	56.8°F	54.5°F	56.3°F
Dec 2	56.7°F	54.5°F	56.2°F
Dec 3	56.5°F	54.8°F	56.0°F
Dec 4	56.4°F	53.8°F	55.7°F
Dec 5	56.1°F	54.1°F	55.6°F
Dec 6	55.9°F	54.2°F	55.4°F
Dec 7	55.8°F	54.4°F	55.4°F
Dec 8	55.5°F	53.4°F	55.1°F
Dec 9	55.2°F	53.5°F	54.8°F
Dec 10	55.3°F	54.1°F	54.9°F
Dec 11	55.4°F	54.0°F	54.9°F
Dec 12	55.3°F	54.1°F	54.9°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 53.9°F in Winter, 57.9°F in Spring, 64.1°F in Summer, and 62.2°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Redwood City	56.1°F	21mi
Oakland	55.5°F	38mi
San Francisco	55.7°F	42mi
Monterey	56.7°F	51mi

* current water temperature in this city

** straight line distance from San Jose