Sea Temperature in Dartmouth in December

Complete information on the sea temperature range in the Atlantic Ocean in Dartmouth in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Dartmouth. 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 Dartmouth in December

39°F

MINIMUN

46°F

AVERAGE

52°F

MAXIMUM

Historical Data of Water Temperature in December in Dartmouth

Water Temperature Chart for Atlantic Ocean in Dartmouth in December

Sea Temperature Table in Dartmouth in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	50°C	48°C	50°C	49°C
Dec 2	50°C	48°C	50°C	50°C
Dec 3	48°C	48°C	48°C	48°C
Dec 4	48°C	48°C	50°C	48°C
Dec 5	48°C	48°C	50°C	48°C
Dec 6	48°C	48°C	48°C	48°C
Dec 7	46°C	48°C	48°C	47°C
Dec 8	46°C	46°C	48°C	48°C
Dec 9	46°C	46°C	46°C	47°C
Dec 10	46°C	46°C	50°C	47°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	48°C	46°C	47°C
Dec 14	45°C	46°C	46°C	46°C
Dec 15	45°C	46°C	45°C	46°C
Dec 16	45°C	46°C	46°C	46°C
Dec 17	43°C	46°C	46°C	46°C
Dec 18	45°C	46°C	46°C	46°C
Dec 19	46°C	46°C	45°C	46°C
Dec 20	45°C	46°C	45°C	46°C
Dec 21	45°C	46°C	45°C	46°C
Dec 22	43°C	46°C	45°C	45°C
Dec 23	43°C	45°C	43°C	44°C
Dec 24	43°C	45°C	43°C	44°C
Dec 25	43°C	45°C	43°C	44°C
Dec 26	43°C	45°C	43°C	44°C
Dec 27	43°C	45°C	41°C	43°C
Dec 28	43°C	45°C	41°C	43°C
Dec 29	43°C	46°C	41°C	44°C
Dec 30	41°C	46°C	41°C	44°C

Dartmouth Climate and Swimming Opportunities in December

50°F

Average Day Air Temperature

39°F

Average Night Air Temperature

11 in

Precipitation Amount per Month

21 days

Number of Rainy Days

9 hrs

Daylight
per Day

2 hrs

Sunshine
per Day

12 mph

Average Wind Speed

87%

Average
humidity

Dartmouth lies within the Massachusetts in United States. The average daytime temperature in Dartmouth in December is 49°F (10°C), while the nighttime average is 38°F (4°C). There are typically 21 rainy days during the month, with a total precipitation of 11.4 inches (291 mm). The daylight duration in December in Dartmouth is 9 hours, with an average of 2 hours of sunshine per day. The average wind speed in December is 12 mph (19 km/h), and the humidity level is around 87%.

The water temperature in Dartmouth 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 Dartmouth 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 Dartmouth

What is the sea temperature in Dartmouth in December?

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

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

The average sea temperature in Dartmouth in December is 46°F (8°C), and the air temperature is 49°F (10°C), so still too cold for most swimmers. Only short dips in proper gear are advisable.