For Llyn Brenig : No gale warning.
The reliability of the situation is poor.
For the night from Monday to Tuesday E wind force 2 continuing all night. Gusts reaching 16 knots in the early part of the night. Poor visibility temporarily in the middle of the night. Daytime of Tuesday 13 may : The sky will remain changeable. Good clear periods alternating with cloudy spells, rather dense in the morning. The risk of seeing rain will remain low.
In the evening, cloud and long sunny periods. Risk of showers as night falls. E force 3 in the morning becoming ENE force 2 in the evening. Gusts reaching 13 knots until the middle of the day. Poor visibility becoming excellent in the middle of the day then poor.