Stinson Beach — Water Temperature in July

Water Temperature Range

10°C

minimum

14°C

average

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

July: Climate and Swimming Opportunities

Average Night Air Temperature

14°C

Average Day Air Temperature

21°C

Precipitation Amount per Month

1 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

10 hrs

Average Wind Speed

15 km/h

Average Humidity

70%

With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.