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 18.88°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

66.0

°F

October 10, 11:37

Trend:

decreasing

Yesterday:

66.4°F

Tomorrow:

65.5°F

Sunrise:

07:11

Sunset:

18:38

Day Length:

11 h. 27 min.

San Jose in October

Minimum:

52.2°F

Average:

53.2°F

Maximum:

55.2°F

Sea water temperature in San Jose today

As of now, in San Jose, the water temperature is 66.0°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 2.4°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 70.6°F on 2024, while the historical minimum was 56.7°F on 2017.

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 65.0°F, the minimum temperature may reach 64.6°F, and the maximum might stay at 65.5°F.

Daily water temperature in San Jose

Date	Current Year actual* / forecast**	last year	10 years average
Sep 26	70.8°F	66.8°F	65.2°F
Sep 27	69.8°F	67.9°F	65.4°F
Sep 28	71.0°F	67.6°F	65.3°F
Sep 29	69.9°F	70.2°F	65.1°F
Sep 30	68.9°F	69.6°F	64.6°F
Oct 1	69.0°F	70.9°F	64.3°F
Oct 2	68.1°F	71.1°F	64.1°F
Oct 3	68.1°F	72.2°F	64.0°F
Oct 4	67.1°F	73.3°F	63.9°F
Oct 5	66.5°F	72.0°F	63.7°F
Oct 6	66.5°F	73.1°F	64.0°F
Oct 7	67.1°F	73.9°F	64.2°F
Oct 8	67.1°F	72.1°F	63.9°F
Oct 9	66.4°F	71.9°F	63.8°F
Oct 10	66.0°F	70.6°F	63.6°F
Oct 11	65.5°F	68.7°F	63.1°F
Oct 12	65.1°F	67.2°F	62.7°F
Oct 13	65.0°F	66.9°F	62.6°F
Oct 14	65.1°F	69.3°F	62.7°F
Oct 15	64.6°F	69.2°F	62.2°F
Oct 16	64.6°F	68.2°F	62.2°F
Oct 17	65.0°F	68.0°F	62.6°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, 57.9°F in Spring, 64.1°F in Summer, and 62.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Redwood City	67.8°F	21mi
Oakland	67.5°F	38mi
San Francisco	64.2°F	42mi
Monterey	61.6°F	51mi

* current water temperature in this city

** straight line distance from San Jose