Sea Temperature in Nantucket in December

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

37°F

MINIMUN

45°F

AVERAGE

52°F

MAXIMUM

Historical Data of Water Temperature in December in Nantucket

Water Temperature Chart for Atlantic Ocean in Nantucket in December

Sea Temperature Table in Nantucket in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	48°C	46°C	48°C	47°C
Dec 2	48°C	46°C	48°C	47°C
Dec 3	46°C	46°C	48°C	47°C
Dec 4	46°C	46°C	48°C	47°C
Dec 5	46°C	46°C	48°C	47°C
Dec 6	45°C	46°C	48°C	46°C
Dec 7	45°C	46°C	48°C	46°C
Dec 8	45°C	45°C	45°C	46°C
Dec 9	45°C	45°C	45°C	46°C
Dec 10	45°C	45°C	48°C	46°C
Dec 11	45°C	46°C	48°C	46°C
Dec 12	46°C	46°C	45°C	46°C
Dec 13	45°C	45°C	45°C	45°C
Dec 14	45°C	45°C	45°C	45°C
Dec 15	45°C	45°C	45°C	45°C
Dec 16	45°C	45°C	45°C	45°C
Dec 17	43°C	45°C	45°C	45°C
Dec 18	43°C	45°C	45°C	45°C
Dec 19	43°C	46°C	43°C	45°C
Dec 20	45°C	46°C	43°C	45°C
Dec 21	45°C	45°C	43°C	44°C
Dec 22	43°C	45°C	41°C	43°C
Dec 23	41°C	45°C	43°C	43°C
Dec 24	41°C	43°C	43°C	43°C
Dec 25	41°C	43°C	41°C	42°C
Dec 26	39°C	43°C	41°C	42°C
Dec 27	39°C	43°C	41°C	42°C
Dec 28	41°C	45°C	39°C	42°C
Dec 29	41°C	45°C	39°C	42°C
Dec 30	41°C	45°C	41°C	42°C

Nantucket Climate and Swimming Opportunities in December

43°F

Average Day Air Temperature

32°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

14 mph

Average Wind Speed

68%

Average
humidity

Nantucket lies within the Massachusetts in United States. The average daytime temperature in Nantucket in December is 44°F (6°C), while the nighttime average is 31°F (-0°C). There are typically 12 rainy days during the month, with a total precipitation of 4.4 inches (111 mm). The daylight duration in December in Nantucket is 9 hours, with an average of 4 hours of sunshine per day. The average wind speed in December is 14 mph (23 km/h), and the humidity level is around 68%.

The water temperature in Nantucket in December ranges from 41°F to 46°F (5°C to 8°C). At the beginning of the month, the average temperature is around 46°F (8°C), shifting to 45°F (7°C) by mid-December and reaching 43°F (6°C) in the last ten days. Overall, the average sea temperature in Nantucket for December is 45°F (7°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 Nantucket

What is the sea temperature in Nantucket in December?

The water temperature in the Atlantic Ocean in Nantucket in December ranges from 41°F to 46°F (5°C to 8°C).

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

The average sea temperature in Nantucket in December is 45°F (7°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.