Swim in Derry (Londonderry) in march 2025What is the temperature of the sea in in march?
Average sea temperature in Derry (Londonderry) in march 2025.
In march, according to seasonal norms, the sea temperature in Derry (Londonderry) is:
Minimum: 46°F
Average: 48°F
Maximum: 50°F
Other useful seasonal weather averages in march:
- Outside temperature: 38°F to 49°F
- Most common weather: "Cloudy"
- The wind blows at -0mph
- It rains a total of 1.9in, over 2 day(s).
Should we swim in Derry (Londonderry) in march?
No... The water temperature in Derry (Londonderry) in march is freezing
You won't be able to swim in Derry (Londonderry) in march! The water temperature is freezing, reaching as low as 46°F (and only 50°F at best)! Our advice: if you are going to Derry (Londonderry) 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 43°F, 1.9in of precipitation (over 2 days) and 90.83 % humidity.
Water and normal seasonal temperatures in Derry (Londonderry) in march
| March | |||
| Average sea temperature | 48°F | ||
| Minimum sea temperature | 46°F | ||
| Maximum sea temperature | 50°F | ||
| Average outside temperature | 45°F | ||
| Maximum outside temperature | 49°F | ||
| Minimum outside temperature | 40°F | ||
| Wind speed | 15.5mph | ||
| Wind temperature | 32°F | ||
| Precipitation | 1.9in | ||
| Number of days of rain | 2 jour(s) (8%) | ||
| Humidity | 91% | ||
| Visibility in kilometers | 8.53km | ||
| Cloud cover | 66% | ||
| 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 | Portrush in march | 48°F | 49°F | freezing swimming | Portstewart in march | 48°F | 49°F | freezing swimming |