For Hokkaido, Hamaatsuma :
Warning strong breeze.
The reliability of the situation is very good.
Overcast skies. Rain. In the evening, overcast skies.
Particularly intense rain . warning: very significant downpours. ESE force 5 in the middle of the day turning SSE force 6 in the evening. Gusts reaching 44 knots in the evening. Moderate sea becoming rough in the evening. Low, short swell from SSE. Excellent visibility becoming poor in the evening.