A northerly and variable flow prevails over the North and the East of the basin. Over the South-West, it is easterly, weak and particularly variable.
For Portstewart :
No gale warning.
For the night from Sunday to Monday N wind force 2 continuing all night. Gusts reaching 12 knots until the middle of the night.
Slight sea. Low, short swell from NNW. Good visibility becoming poor in the middle of the night then poor. Daytime of Monday 5 may : The sky will remain changeable.
Good clear periods alternating with cloudy spells, sometimes dense. Risk of some spots of rain in the morning, possibility of showers in the afternoon. In the evening, cloudy spells, sometimes dense.
Possibility of showers NNW wind force 3 continuing all day. Gusts reaching 13 knots in the evening. Slight sea becoming smooth to slight in the middle of the day. Low, short swell from NNW. Poor visibility becoming excellent in the middle of the day then good.