San Jose — Water Temperature in July

Water Temperature Range

19°C

minimum

24°C

average

27°C

maximum

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Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2025	2024	2023	2022
JUL 1	23°C	24°C	23°C	22°C
JUL 2	23°C	25°C	22°C	22°C
JUL 3	23°C	25°C	22°C	21°C
JUL 4	24°C	25°C	23°C	22°C
JUL 5	24°C	26°C	23°C	21°C
JUL 6	25°C	26°C	23°C	23°C
JUL 7	24°C	26°C	22°C	23°C
JUL 8	24°C	26°C	22°C	22°C
JUL 9	24°C	26°C	22°C	23°C
JUL 10	24°C	26°C	22°C	23°C
JUL 11	24°C	26°C	22°C	23°C
JUL 12	25°C	26°C	24°C	24°C
JUL 13	25°C	26°C	22°C	24°C
JUL 14	25°C	26°C	23°C	24°C
JUL 15	24°C	25°C	24°C	24°C
JUL 16	24°C	25°C	23°C	26°C
JUL 17	24°C	25°C	23°C	24°C
JUL 18	24°C	25°C	23°C	23°C
JUL 19	24°C	25°C	24°C	24°C
JUL 20	25°C	25°C	24°C	25°C
JUL 21	25°C	25°C	25°C	25°C
JUL 22	24°C	25°C	23°C	25°C
JUL 23	24°C	25°C	23°C	24°C
JUL 24	24°C	24°C	23°C	24°C
JUL 25	25°C	24°C	24°C	25°C
JUL 26	25°C	24°C	24°C	26°C
JUL 27	25°C	24°C	24°C	25°C
JUL 28	25°C	24°C	23°C	25°C
JUL 29	25°C	25°C	24°C	25°C
JUL 30	24°C	24°C	24°C	25°C
JUL 31	25°C	24°C	25°C	24°C

July: Climate and Swimming Opportunities

Average Night Air Temperature

22°C

Average Day Air Temperature

30°C

Precipitation Amount per Month

1 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

11 hrs

Average Wind Speed

13 km/h

Average Humidity

61%

At such water and air temperatures, swimming is pleasant and refreshing rather than hot. After you get in, it feels comfortable, and you’ll warm up quickly when you come out.