Swim in Portstewart in december 2024What is the temperature of the sea in in december?
Average sea temperature in Portstewart in december 2024.
In december, according to seasonal norms, the sea temperature in Portstewart is:
Minimum: 50°F
Average: 51°F
Maximum: 54°F
Other useful seasonal weather averages in december:
- Outside temperature: 43°F to 47°F
- Most common weather: "Cloudy"
- The wind blows at 1.2mph
- It rains a total of 4.7in, over 9 day(s).
Should we swim in Portstewart in december?
No... The water temperature in Portstewart in december is freezing
You won't be able to swim in Portstewart in december! The water temperature is freezing, reaching as low as 50°F (and only 54°F at best)! Our advice: if you are going to Portstewart 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 45°F, 4.7in of precipitation (over 9 days) and 86.78 % humidity.
Water and normal seasonal temperatures in Portstewart in december
| December | |||
| Average sea temperature | 51°F | ||
| Minimum sea temperature | 50°F | ||
| Maximum sea temperature | 54°F | ||
| Average outside temperature | 45°F | ||
| Maximum outside temperature | 47°F | ||
| Minimum outside temperature | 43°F | ||
| Wind speed | 19.9mph | ||
| Wind temperature | 36°F | ||
| Precipitation | 4.7in | ||
| Number of days of rain | 9 jour(s) (29%) | ||
| Humidity | 87% | ||
| Visibility in kilometers | 8.94km | ||
| Cloud cover | 62% | ||
| Our opinion | freezing swimming |
Swim elsewhere in Northern Ireland in december
| City | Average T° | Min. T° | Max. T° | Our opinion | Belfast in december | 51°F | 54°F | freezing swimming | Derry (Londonderry) in december | 52°F | 54°F | freezing swimming | Portrush in december | 52°F | 53°F | freezing swimming |
Swim in Northern Ireland in december: sea temperature by city