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 21.95°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

71.5

°F

September 5, 14:21

Trend:

stable

Yesterday:

71.5°F

Tomorrow:

71.9°F

Sunrise:

06:41

Sunset:

19:31

Day Length:

12 h. 50 min.

San Jose in September

Minimum:

52.0°F

Average:

53.0°F

Maximum:

55.1°F

Sea water temperature in San Jose today

As of now, in San Jose, the water temperature is 71.5°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 6.3°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 71.1°F on 2022, while the historical minimum was 58.1°F on 2016.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 71.5°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
Aug 22	68.4°F	68.2°F	65.4°F
Aug 23	69.9°F	66.9°F	65.3°F
Aug 24	70.4°F	66.0°F	65.3°F
Aug 25	70.0°F	65.8°F	65.0°F
Aug 26	69.7°F	65.6°F	64.8°F
Aug 27	68.5°F	66.6°F	64.7°F
Aug 28	67.9°F	66.8°F	64.6°F
Aug 29	67.6°F	68.5°F	64.6°F
Aug 30	68.1°F	68.5°F	64.7°F
Aug 31	69.4°F	70.3°F	65.0°F
Sep 1	69.7°F	69.8°F	65.1°F
Sep 2	69.5°F	70.1°F	65.1°F
Sep 3	70.3°F	68.8°F	65.3°F
Sep 4	71.5°F	68.3°F	65.6°F
Sep 5	71.5°F	69.2°F	65.2°F
Sep 6	71.9°F	69.9°F	65.6°F
Sep 7	71.8°F	71.1°F	65.5°F
Sep 8	71.5°F	70.1°F	65.2°F
Sep 9	71.7°F	69.7°F	65.4°F
Sep 10	71.5°F	69.5°F	65.2°F
Sep 11	71.3°F	69.4°F	65.0°F
Sep 12	70.8°F	69.4°F	64.5°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 61.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Redwood City	71.5°F	21mi
Oakland	66.2°F	38mi
San Francisco	63.4°F	42mi
Monterey	59.5°F	51mi

* current water temperature in this city

** straight line distance from San Jose