General situation

Sunday : weak westerly storm system generated by a low 986 hPa at the south-east of Iceland.
Monday : High 1020hPa at the south of Brittany, low 1006 hPa by 53°N and 16°W at 12h00 and moving towards north-east.
Tuesday : ridge of high pressure from bay of Biscay to central Europe. South-westerly storm system on Great Britain.
Wednesday : relative low pressure on Spain and south-west of France. Ridge of high pressure on the British Islands.

Weather conditions way to the Sables d’Olonne

Monday 15th :

15H00 :South-westerly wind 10-15kts – rather moderatesea – very cloudy sky– 17°
21H00 :South-westerly wind 8-12kts – rather moderate sea – very cloudy sky – 16°

Tuesday 16th :

03H00 : South-westerly wind 5-8kts – rather moderate sea – variable cloudiness – 14°
09H00 : South-westerly wind 5-8kts – Slight sea – large sunny spells – 17°
15H00 : West-south-westerly wind 5-8kts – Slight sea – large sunny spells – 20°
21H00 :West-north-westerly wind 5-8kts – slight sea – little cloudy sky – 17°

Wednesday 17th :

03H00 : North-north-easterly wind 5-10kts – Smooth or slight sea – clear sky – 15°
09H00 : North-east wind 5-10kts – Smooth or slight sea – sunny – 18°
15H00 : East-north-easterly wind 5-10kts – Smooth or slight sea – large sunny spells – 24°
21H00 : Variable wind 5-10kts – Smooth or slight sea – stormy – 21°