Sea Temperature in Stony Brook in December

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

41°F

MINIMUN

48°F

AVERAGE

55°F

MAXIMUM

Historical Data of Water Temperature in December in Stony Brook

Water Temperature Chart for Atlantic Ocean in Stony Brook in December

Sea Temperature Table in Stony Brook in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	54°C	48°C	52°C	51°C
Dec 2	52°C	48°C	52°C	51°C
Dec 3	52°C	48°C	52°C	51°C
Dec 4	52°C	50°C	52°C	51°C
Dec 5	52°C	50°C	50°C	51°C
Dec 6	50°C	50°C	50°C	50°C
Dec 7	50°C	50°C	52°C	51°C
Dec 8	50°C	50°C	48°C	50°C
Dec 9	50°C	50°C	48°C	50°C
Dec 10	48°C	48°C	52°C	50°C
Dec 11	48°C	48°C	50°C	49°C
Dec 12	50°C	48°C	50°C	49°C
Dec 13	50°C	48°C	50°C	50°C
Dec 14	50°C	48°C	50°C	50°C
Dec 15	48°C	48°C	48°C	49°C
Dec 16	46°C	45°C	48°C	47°C
Dec 17	48°C	46°C	48°C	48°C
Dec 18	50°C	46°C	48°C	48°C
Dec 19	48°C	48°C	48°C	49°C
Dec 20	50°C	46°C	46°C	48°C
Dec 21	48°C	46°C	46°C	48°C
Dec 22	48°C	46°C	45°C	47°C
Dec 23	48°C	46°C	45°C	47°C
Dec 24	48°C	45°C	46°C	47°C
Dec 25	46°C	45°C	46°C	46°C
Dec 26	46°C	45°C	45°C	46°C
Dec 27	48°C	45°C	45°C	46°C
Dec 28	45°C	45°C	45°C	46°C
Dec 29	45°C	45°C	43°C	45°C
Dec 30	45°C	46°C	43°C	46°C

Stony Brook Climate and Swimming Opportunities in December

45°F

Average Day Air Temperature

28°F

Average Night Air Temperature

4 in

Precipitation Amount per Month

12 days

Number of Rainy Days

9 hrs

Daylight
per Day

5 hrs

Sunshine
per Day

12 mph

Average Wind Speed

68%

Average
humidity

Stony Brook lies within the New York in United States. The average daytime temperature in Stony Brook in December is 44°F (7°C), while the nighttime average is 29°F (-2°C). There are typically 12 rainy days during the month, with a total precipitation of 4.4 inches (112 mm). The daylight duration in December in Stony Brook is 9 hours, with an average of 5 hours of sunshine per day. The average wind speed in December is 12 mph (19 km/h), and the humidity level is around 68%.

The water temperature in Stony Brook in December ranges from 45°F to 52°F (7°C to 11°C). At the beginning of the month, the average temperature is around 50°F (10°C), shifting to 48°F (9°C) by mid-December and reaching 46°F (8°C) in the last ten days. Overall, the average sea temperature in Stony Brook for December is 48°F (9°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 Stony Brook

What is the sea temperature in Stony Brook in December?

The water temperature in the Atlantic Ocean in Stony Brook in December ranges from 45°F to 52°F (7°C to 11°C).

Is it possible to swim in the Atlantic Ocean in Stony Brook in December?

The average sea temperature in Stony Brook in December is 48°F (9°C), and the air temperature is 44°F (7°C), so still too cold for most swimmers. Only short dips in proper gear are advisable.