A northerly, weak and variable flow prevails over the whole area.
For Calais :
No gale warning.
For the night from Friday to Saturday W wind force 2 continuing all night. Gusts reaching 16 knots at the end of the night.
Smooth to slight sea. Low, short swell from ESE. Good visibility becoming good in the middle of the night then poor. Daytime of Saturday 18 july : The sky will remain changeable.
Good clear periods alternating with cloudy spells, sometimes dense. The risk of seeing rain will remain low. In the evening, good clear periods but cloud building.
Chance of light rain. WNW force 3 becoming force 2 in the middle of the day then NNW. Gusts reaching 19 knots from the middle of the day. Slight sea. Low, short swell from NNE then from NW in the middle of the day then from W. Poor visibility becoming good in the middle of the day then good.