Mattapoisett — Water Temperature in October

Water Temperature Range

9°C

minimum

17°C

average

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

October: Climate and Swimming Opportunities

Average Night Air Temperature

8°C

Average Day Air Temperature

16°C

Precipitation Amount per Month

135 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

5 hrs

Average Wind Speed

15 km/h

Average Humidity

83%

At such water and air temperatures, swimming often feels chilly and is best for short swims. Getting out can feel cold, so it helps to have dry clothes ready right away.