For São Martinho do Porto :
No gale warning.
The reliability of the situation is very good.
Fair weather with mostly clear skies. In the evening, clear skies.
W force 1 becoming WNW force 2 in the middle of the day then NW. Gusts reaching 9 knots in the middle of the day. Slight sea. Low, fairly long swell from NW. Visibility reduced by fog becoming excellent in the middle of the day then poor.