Swim in Portstewart in march 2025What is the temperature of the sea in in march?
Average sea temperature in Portstewart in march 2025.
In march, according to seasonal norms, the sea temperature in Portstewart is:
Minimum: 46°F
Average: 48°F
Maximum: 49°F
Other useful seasonal weather averages in march:
- Outside temperature: 41°F to 48°F
- Most common weather: "Cloudy"
- The wind blows at 0.6mph
- It rains a total of 4.1in, over 8 day(s).
Should we swim in Portstewart in march?
No... The water temperature in Portstewart in march is freezing
You won't be able to swim in Portstewart in march! The water temperature is freezing, reaching as low as 46°F (and only 49°F at best)! Our advice: if you are going to Portstewart this month, plan to sightsee and forget the beach!
Note also that in march, the climate is very bad with an average outside temperature of 45°F, 4.1in of precipitation (over 8 days) and 86.78 % humidity.
Water and normal seasonal temperatures in Portstewart in march
| March | |||
| Average sea temperature | 48°F | ||
| Minimum sea temperature | 46°F | ||
| Maximum sea temperature | 49°F | ||
| Average outside temperature | 45°F | ||
| Maximum outside temperature | 49°F | ||
| Minimum outside temperature | 41°F | ||
| Wind speed | 18.6mph | ||
| Wind temperature | 34°F | ||
| Precipitation | 4.1in | ||
| Number of days of rain | 8 jour(s) (25%) | ||
| Humidity | 87% | ||
| Visibility in kilometers | 8.82km | ||
| Cloud cover | 61% | ||
| Our opinion | freezing swimming |
Swim elsewhere in Northern Ireland in march
| City | Average T° | Min. T° | Max. T° | Our opinion | Belfast in march | 47°F | 49°F | freezing swimming | Derry (Londonderry) in march | 48°F | 50°F | freezing swimming | Portrush in march | 48°F | 49°F | freezing swimming |