Sea Temperature in Plymouth in December

Complete information on the sea temperature range in the Atlantic Ocean in Plymouth in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Plymouth. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Plymouth in December

39°F

MINIMUN

46°F

AVERAGE

52°F

MAXIMUM

Historical Data of Water Temperature in December in Plymouth

Water Temperature Chart for Atlantic Ocean in Plymouth in December

Sea Temperature Table in Plymouth in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	50°C	48°C	50°C	49°C
Dec 2	48°C	48°C	50°C	49°C
Dec 3	48°C	46°C	48°C	48°C
Dec 4	48°C	46°C	48°C	48°C
Dec 5	48°C	48°C	50°C	49°C
Dec 6	48°C	48°C	48°C	48°C
Dec 7	46°C	48°C	48°C	48°C
Dec 8	46°C	46°C	48°C	47°C
Dec 9	45°C	46°C	46°C	47°C
Dec 10	45°C	46°C	48°C	46°C
Dec 11	46°C	46°C	48°C	47°C
Dec 12	46°C	46°C	48°C	47°C
Dec 13	46°C	46°C	48°C	47°C
Dec 14	46°C	46°C	46°C	47°C
Dec 15	46°C	46°C	46°C	46°C
Dec 16	46°C	46°C	46°C	46°C
Dec 17	45°C	46°C	46°C	46°C
Dec 18	45°C	46°C	46°C	46°C
Dec 19	46°C	46°C	46°C	46°C
Dec 20	46°C	46°C	46°C	46°C
Dec 21	46°C	46°C	45°C	46°C
Dec 22	45°C	46°C	45°C	46°C
Dec 23	45°C	45°C	45°C	45°C
Dec 24	45°C	45°C	45°C	45°C
Dec 25	45°C	45°C	45°C	45°C
Dec 26	45°C	45°C	45°C	45°C
Dec 27	45°C	45°C	43°C	45°C
Dec 28	45°C	45°C	43°C	44°C
Dec 29	43°C	45°C	43°C	44°C
Dec 30	43°C	46°C	43°C	45°C

Plymouth Climate and Swimming Opportunities in December

43°F

Average Day Air Temperature

25°F

Average Night Air Temperature

4 in

Precipitation Amount per Month

12 days

Number of Rainy Days

9 hrs

Daylight
per Day

4 hrs

Sunshine
per Day

10 mph

Average Wind Speed

66%

Average
humidity

Plymouth lies within the Massachusetts in United States. The average daytime temperature in Plymouth in December is 44°F (6°C), while the nighttime average is 26°F (-4°C). There are typically 12 rainy days during the month, with a total precipitation of 4.1 inches (105 mm). The daylight duration in December in Plymouth is 9 hours, with an average of 4 hours of sunshine per day. The average wind speed in December is 11 mph (17 km/h), and the humidity level is around 66%.

The water temperature in Plymouth in December ranges from 43°F to 48°F (6°C to 9°C). At the beginning of the month, the average temperature is around 48°F (9°C), shifting to 46°F (8°C) by mid-December and reaching 45°F (7°C) in the last ten days. Overall, the average sea temperature in Plymouth for December is 46°F (8°C). Still too cold for most swimmers. Only short dips in proper gear are advisable.

Sea Temperature in December in Nearby Cities

Frequently Asked Questions About Water Temperatures in December in Plymouth

What is the sea temperature in Plymouth in December?

The water temperature in the Atlantic Ocean in Plymouth in December ranges from 43°F to 48°F (6°C to 9°C).

Is it possible to swim in the Atlantic Ocean in Plymouth in December?

The average sea temperature in Plymouth in December is 46°F (8°C), and the air temperature is 44°F (6°C), so still too cold for most swimmers. Only short dips in proper gear are advisable.