For Pornic :
No gale warning.
For the night from Monday to Tuesday W wind force 1 continuing all night. Gusts reaching 15 knots in the early part of the night.
Smooth to slight sea. Low, long swell from W. Excellent visibility becoming excellent at the end of the night. Daytime of Tuesday 20 october : The unsettled weather will become more unpredictable in the second half of the day.
Good clear periods alternating with cloudy spells, rather dense in the morning. Some showers from late morning. In the evening, cloud and long sunny periods.
Light showers progressively becoming less frequent. SW force 1 becoming WSW force 2 in the middle of the day then W. Gusts reaching 13 knots in the morning. Smooth to slight sea. Low, fairly long swell from W then from N in the evening. Good visibility becoming excellent in the middle of the day.