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 12.19°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.

53.9

°F

January 8, 16:05

Trend:

increasing

Yesterday:

53.6°F

Tomorrow:

54.0°F

Sunrise:

07:22

Sunset:

17:07

Day Length:

9 h. 45 min.

San Jose in January

Minimum:

51.8°F

Average:

53.3°F

Maximum:

54.8°F

Sea water temperature in San Jose today

As of now, in San Jose, the water temperature is 53.9°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 1.2°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 54.1°F on 2018, while the historical minimum was 51.8°F on 2017.

latest data

last year

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 54.2°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
Jan 1	53.5°F	54.8°F	53.3°F
Jan 2	53.7°F	54.6°F	53.3°F
Jan 3	53.6°F	54.4°F	53.3°F
Jan 4	54.0°F	53.9°F	53.1°F
Jan 5	53.4°F	52.5°F	52.4°F
Jan 6	53.5°F	52.7°F	52.6°F
Jan 7	53.6°F	52.9°F	52.7°F
Jan 8	53.9°F	53.2°F	52.7°F
Jan 9	54.0°F	52.7°F	52.8°F
Jan 10	54.2°F	53.2°F	53.0°F
Jan 11	54.3°F	53.4°F	53.0°F
Jan 12	54.2°F	53.2°F	53.0°F
Jan 13	54.2°F	52.8°F	53.0°F
Jan 14	54.3°F	52.8°F	53.0°F
Jan 15	54.3°F	52.9°F	53.1°F
Dec 25	53.0°F	53.8°F	53.5°F
Dec 26	53.1°F	54.1°F	53.5°F
Dec 27	53.5°F	54.1°F	53.6°F
Dec 28	53.5°F	54.1°F	53.6°F
Dec 29	53.7°F	53.8°F	53.5°F
Dec 30	53.6°F	53.8°F	53.3°F
Dec 31	53.5°F	55.1°F	53.3°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 53.6°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	54.2°F	21mi
Oakland	54.1°F	38mi
San Francisco	54.6°F	42mi
Monterey	58.2°F	51mi

* current water temperature in this city

** straight line distance from San Jose