Sea Temperature in Saint John in December

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

37°F

MINIMUN

45°F

AVERAGE

52°F

MAXIMUM

Historical Data of Water Temperature in December in Saint John

Water Temperature Chart for Atlantic Ocean in Saint John in December

Sea Temperature Table in Saint John in December Over the Past Years

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

Saint John Climate and Swimming Opportunities in December

46°F

Average Day Air Temperature

37°F

Average Night Air Temperature

3 in

Precipitation Amount per Month

18 days

Number of Rainy Days

7 hrs

Daylight
per Day

1 hrs

Sunshine
per Day

13 mph

Average Wind Speed

91%

Average
humidity

Saint John lies within the New Brunswick in Canada. The average daytime temperature in Saint John in December is 8°C (46°F), while the nighttime average is 3°C (37°F). There are typically 18 rainy days during the month, with a total precipitation of 86 mm (3.4 inches). The daylight duration in December in Saint John is 7 hours, with an average of 1 hours of sunshine per day. The average wind speed in December is 22 km/h (14 mph), and the humidity level is around 91%.

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

What is the sea temperature in Saint John in December?

The water temperature in the Atlantic Ocean in Saint John in December ranges from 7°C to 9°C (45°F to 48°F).

Is it possible to swim in the Atlantic Ocean in Saint John in December?

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