Average temperature in Portstewart
The mean minimum and maximum temperatures over the year in Portstewart (Londonderry County), the United Kingdom.
- On average, the warmest month is August with 17°C.
- On average, the coolest month is February with 9°C.
- The average annual maximum temperature is 13°C.
- The average annual minimum temperature is 8°C.
Forecast for Portstewart
broken clouds and no rain
overcast and no rain
overcast and small chance of slight rain