Swimming in Barmouth in december 2026: Average sea temperature in december and tide times in december 2026
Average sea temperature in Barmouth in december 2026.
In december, according to seasonal norms, the sea temperature in Barmouth is:
Minimum: 49°F
Average: 52°F
Maximum: 55°F
Other useful seasonal weather averages in december:
- Outside temperature: 40°F to 45°F
- Most common weather: "Moderate rain at times"
- The wind blows at 0.6mph
- It rains a total of 8in, over 13 day(s).
Should we swim in Barmouth in december?
No... The water temperature in Barmouth in december is freezing
You won't be able to swim in Barmouth in december! The water temperature is freezing, reaching as low as 49°F (and only 55°F at best)! Our advice: if you are going to Barmouth this month, plan to sightsee and forget the beach!
Note also that in december, the climate is very bad with an average outside temperature of 43°F, 8in of precipitation (over 13 days) and 92.07 % humidity.
Water and normal seasonal temperatures in Barmouth in december
| December | |||
| Average sea temperature | 52°F | ||
| Minimum sea temperature | 49°F | ||
| Maximum sea temperature | 55°F | ||
| Average outside temperature | 43°F | ||
| Maximum outside temperature | 45°F | ||
| Minimum outside temperature | 41°F | ||
| Wind speed | 14.3mph | ||
| Wind temperature | 34°F | ||
| Precipitation | 8in | ||
| Number of days of rain | 13 jour(s) (41%) | ||
| Humidity | 93% | ||
| Visibility in kilometers | 7.99km | ||
| Cloud cover | 70% | ||
| Our opinion | freezing swimming |
Chart of the tides in december 2026
Tide times in december 2026 in Barmouth
Swim elsewhere in Wales in december
| City | Average T° | Min. T° | Max. T° | Our opinion | Cardiff in december | 53°F | 56°F | freezing swimming | Pembrokeshire in december | 52°F | 56°F | freezing swimming | Swansea in december | 53°F | 55°F | freezing swimming | Llandudno in december | 50°F | 54°F | freezing swimming |