Sea Temperature in St Mary's Island in December

Complete information on the sea temperature range in the North Sea in St Mary's Island in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in St Mary's Island. 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 St Mary's Island in December

6°C

MINIMUN

10°C

AVERAGE

14°C

MAXIMUM

Historical Data of Water Temperature in December in St Mary's Island

Water Temperature Chart for North Sea in St Mary's Island in December

Sea Temperature Table in St Mary's Island in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	11°C	11°C	13°C	11.3°C
Dec 2	11°C	11°C	12°C	11.3°C
Dec 3	11°C	10°C	12°C	11.0°C
Dec 4	11°C	11°C	12°C	11.0°C
Dec 5	11°C	10°C	12°C	10.8°C
Dec 6	11°C	10°C	12°C	10.8°C
Dec 7	12°C	9°C	11°C	10.5°C
Dec 8	11°C	12°C	9°C	11.0°C
Dec 9	10°C	11°C	10°C	10.5°C
Dec 10	10°C	9°C	11°C	10.0°C
Dec 11	11°C	9°C	10°C	9.8°C
Dec 12	10°C	9°C	10°C	9.8°C
Dec 13	10°C	10°C	10°C	10.0°C
Dec 14	10°C	10°C	10°C	10.0°C
Dec 15	10°C	9°C	10°C	9.8°C
Dec 16	9°C	10°C	10°C	9.8°C
Dec 17	9°C	10°C	9°C	9.5°C
Dec 18	10°C	10°C	10°C	10.0°C
Dec 19	10°C	9°C	8°C	9.0°C
Dec 20	9°C	9°C	8°C	8.8°C
Dec 21	9°C	10°C	8°C	9.0°C
Dec 22	10°C	9°C	9°C	9.3°C
Dec 23	9°C	9°C	8°C	8.8°C
Dec 24	8°C	10°C	9°C	9.0°C
Dec 25	8°C	10°C	9°C	9.0°C
Dec 26	8°C	9°C	9°C	8.8°C
Dec 27	9°C	9°C	8°C	8.8°C
Dec 28	9°C	9°C	9°C	9.0°C
Dec 29	8°C	9°C	9°C	8.8°C
Dec 30	8°C	9°C	9°C	8.8°C

St Mary's Island Climate and Swimming Opportunities in December

8°C

Average Day Air Temperature

3°C

Average Night Air Temperature

63 mm

Precipitation Amount per Month

13 days

Number of Rainy Days

8 hrs

Daylight
per Day

2 hrs

Sunshine
per Day

16 km/h

Average Wind Speed

91%

Average
humidity

St Mary's Island lies within the England in United Kingdom. The average daytime temperature in St Mary's Island in December is 8°C (46°F), while the nighttime average is 3°C (37°F). There are typically 13 rainy days during the month, with a total precipitation of 63 mm (2.5 inches). The daylight duration in December in St Mary's Island is 8 hours, with an average of 2 hours of sunshine per day. The average wind speed in December is 16 km/h (10 mph), and the humidity level is around 91%.

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

What is the sea temperature in St Mary's Island in December?

The water temperature in the North Sea in St Mary's Island in December ranges from 8°C to 11°C (46°F to 52°F).

Is it possible to swim in the North Sea in St Mary's Island in December?

The average sea temperature in St Mary's Island in December is 10°C (50°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.