Swimming in Portstewart in may 2025: Average sea temperature in may and tide times in may 2025
Average sea temperature in Portstewart in may 2025.
In may, according to seasonal norms, the sea temperature in Portstewart is:
Minimum: 49°F
Average: 51°F
Maximum: 52°F
Other useful seasonal weather averages in may:
- Outside temperature: 48°F to 55°F
- Most common weather: "Moderate rain at times"
- The wind blows at 4.4mph
- It rains a total of 4.2in, over 7 day(s).
Should we swim in Portstewart in may?
No... The water temperature in Portstewart in may is freezing
You won't be able to swim in Portstewart in may! The water temperature is freezing, reaching as low as 49°F (and only 52°F at best)! Our advice: if you are going to Portstewart this month, plan to sightsee and forget the beach!
Note also that in may, the climate is tolerable with an average outside temperature of 52°F, 4.2in of precipitation (over 7 days) and 87.43 % humidity.
Water and normal seasonal temperatures in Portstewart in may
| May | |||
| Average sea temperature | 51°F | ||
| Minimum sea temperature | 49°F | ||
| Maximum sea temperature | 52°F | ||
| Average outside temperature | 52°F | ||
| Maximum outside temperature | 56°F | ||
| Minimum outside temperature | 49°F | ||
| Wind speed | 15.5mph | ||
| Wind temperature | 45°F | ||
| Precipitation | 4.2in | ||
| Number of days of rain | 7 jour(s) (22%) | ||
| Humidity | 88% | ||
| Visibility in kilometers | 9.05km | ||
| Cloud cover | 54% | ||
| Our opinion | freezing swimming |
Chart of the tides in may 2025
Tide times in may 2025 in Portstewart
Swim elsewhere in Northern Ireland in may
| City | Average T° | Min. T° | Max. T° | Our opinion | Belfast in may | 51°F | 52°F | freezing swimming | Derry (Londonderry) in may | 52°F | 53°F | freezing swimming | Portrush in may | 51°F | 53°F | freezing swimming |