West Yarmouth — Water Temperature in July

Water Temperature Range

15°C

minimum

20°C

average

23°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

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

July: Climate and Swimming Opportunities

Average Night Air Temperature

17°C

Average Day Air Temperature

26°C

Precipitation Amount per Month

70 mm

Number of Rainy Days

Daylight per Day

15 hrs

Sunshine per Day

8 hrs

Average Wind Speed

16 km/h

Average Humidity

75%

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.