For Hokkaido, Hamaatsuma :
No gale warning.
The reliability of the situation is very good.
Cloud and long sunny periods. Possibility of showers In the evening, good clear periods but cloud building.
Possibility of showers WSW force 3 in the middle of the day turning WNW in the evening. Gusts reaching 19 knots in the middle of the day. Slight sea becoming moderate in the evening. Low, short swell from S. Excellent visibility becoming excellent in the evening.