Sea Temperature in Saint Marys in December

Complete information on the sea temperature range in the Celtic Sea in Saint Marys in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Saint Marys. 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 Marys in December

50°F

MINIMUN

53°F

AVERAGE

55°F

MAXIMUM

Historical Data of Water Temperature in December in Saint Marys

Water Temperature Chart for Celtic Sea in Saint Marys in December

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

Day	2024	2023	2022	Average
Dec 1	54°C	54°C	54°C	54°C
Dec 2	55°C	54°C	54°C	54°C
Dec 3	55°C	54°C	55°C	55°C
Dec 4	54°C	54°C	55°C	54°C
Dec 5	55°C	54°C	54°C	54°C
Dec 6	54°C	54°C	54°C	54°C
Dec 7	54°C	54°C	54°C	54°C
Dec 8	54°C	54°C	54°C	54°C
Dec 9	54°C	54°C	54°C	54°C
Dec 10	54°C	54°C	54°C	54°C
Dec 11	54°C	54°C	54°C	54°C
Dec 12	54°C	54°C	54°C	53°C
Dec 13	54°C	52°C	54°C	53°C
Dec 14	54°C	54°C	54°C	54°C
Dec 15	54°C	52°C	52°C	52°C
Dec 16	52°C	52°C	54°C	53°C
Dec 17	52°C	52°C	52°C	52°C
Dec 18	54°C	54°C	52°C	53°C
Dec 19	54°C	54°C	52°C	53°C
Dec 20	54°C	52°C	52°C	53°C
Dec 21	54°C	54°C	52°C	53°C
Dec 22	52°C	52°C	52°C	52°C
Dec 23	52°C	52°C	52°C	52°C
Dec 24	52°C	52°C	52°C	52°C
Dec 25	52°C	52°C	52°C	52°C
Dec 26	52°C	52°C	52°C	52°C
Dec 27	52°C	52°C	52°C	52°C
Dec 28	52°C	52°C	52°C	52°C
Dec 29	52°C	52°C	52°C	52°C
Dec 30	52°C	52°C	52°C	52°C

Saint Marys Climate and Swimming Opportunities in December

50°F

Average Day Air Temperature

43°F

Average Night Air Temperature

5 in

Precipitation Amount per Month

15 days

Number of Rainy Days

8 hrs

Daylight
per Day

2 hrs

Sunshine
per Day

16 mph

Average Wind Speed

88%

Average
humidity

Saint Marys lies within the England in United Kingdom. The average daytime temperature in Saint Marys in December is 10°C (51°F), while the nighttime average is 6°C (42°F). There are typically 15 rainy days during the month, with a total precipitation of 133 mm (5.2 inches). The daylight duration in December in Saint Marys is 8 hours, with an average of 2 hours of sunshine per day. The average wind speed in December is 26 km/h (16 mph), and the humidity level is around 88%.

The water temperature in Saint Marys in December ranges from 11°C to 12°C (52°F to 54°F). At the beginning of the month, the average temperature is around 12°C (54°F), shifting to 12°C (54°F) by mid-December and reaching 11°C (52°F) in the last ten days. Overall, the average sea temperature in Saint Marys for December is 12°C (54°F). The water is cool, but many swimmers can tolerate it, especially with the sun out. Acclimatization is helpful.

Sea Temperature in December in Nearby Cities

Frequently Asked Questions About Water Temperatures in December in Saint Marys

What is the sea temperature in Saint Marys in December?

The water temperature in the Celtic Sea in Saint Marys in December ranges from 11°C to 12°C (52°F to 54°F).

Is it possible to swim in the Celtic Sea in Saint Marys in December?

The average sea temperature in Saint Marys in December is 12°C (54°F), and the air temperature is 10°C (51°F), so the water is cool, but many swimmers can tolerate it, especially with the sun out. Acclimatization is helpful.