Sea Temperature in Barmouth in December

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

45°F

MINIMUN

50°F

AVERAGE

55°F

MAXIMUM

Historical Data of Water Temperature in December in Barmouth

Water Temperature Chart for Celtic Sea in Barmouth in December

Sea Temperature Table in Barmouth in December Over the Past Years

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

Barmouth Climate and Swimming Opportunities in December

48°F

Average Day Air Temperature

37°F

Average Night Air Temperature

4 in

Precipitation Amount per Month

17 days

Number of Rainy Days

7 hrs

Daylight
per Day

1 hrs

Sunshine
per Day

12 mph

Average Wind Speed

90%

Average
humidity

Barmouth lies within the Wales in United Kingdom. The average daytime temperature in Barmouth in December is 9°C (47°F), while the nighttime average is 3°C (38°F). There are typically 17 rainy days during the month, with a total precipitation of 104 mm (4.1 inches). The daylight duration in December in Barmouth is 7 hours, with an average of 1 hours of sunshine per day. The average wind speed in December is 19 km/h (12 mph), and the humidity level is around 90%.

The water temperature in Barmouth 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 10°C (50°F), shifting to 9°C (48°F) by mid-December and reaching 9°C (48°F) in the last ten days. Overall, the average sea temperature in Barmouth for December is 9°C (48°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 Barmouth

What is the sea temperature in Barmouth in December?

The water temperature in the Celtic Sea in Barmouth in December ranges from 8°C to 11°C (46°F to 52°F).

Is it possible to swim in the Celtic Sea in Barmouth in December?

The average sea temperature in Barmouth in December is 9°C (48°F), and the air temperature is 9°C (47°F), so still too cold for most swimmers. Only short dips in proper gear are advisable.