For Rennes : No gale warning.
We are 85% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will end.
Good clear periods but with plenty of cloud in the morning, overcast skies in the afternoon. The risk of seeing rain will remain low.
In the evening, overcast skies. Light rain. S force 4 in the morning becoming force 5 in the middle of the day. Gusts reaching 33 knots in the evening. Excellent visibility.