Sea Temperature in Chatham in December

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

39°F

MINIMUN

46°F

AVERAGE

52°F

MAXIMUM

Historical Data of Water Temperature in December in Chatham

Water Temperature Chart for Atlantic Ocean in Chatham in December

Sea Temperature Table in Chatham in December Over the Past Years

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

Chatham 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

Chatham lies within the Massachusetts in United States. The average daytime temperature in Chatham 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 Chatham 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 Chatham in December ranges from 41°F to 48°F (5°C to 9°C). At the beginning of the month, the average temperature is around 46°F (8°C), shifting to 46°F (8°C) by mid-December and reaching 43°F (6°C) in the last ten days. Overall, the average sea temperature in Chatham 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 Chatham

What is the sea temperature in Chatham in December?

The water temperature in the Atlantic Ocean in Chatham in December ranges from 41°F to 48°F (5°C to 9°C).

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

The average sea temperature in Chatham 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.