Shioya is where Japan's surf and ski cultures collide—a rivermouth break near Otaru that lights up with the same Siberian storms that dump legendary powder on Niseko and Hokkaido's ski resorts. The water temperature drops near freezing, requiring 5mm+ wetsuits with hoods, gloves, and boots, but the reward is empty, powerful waves with snow-covered beaches. A small but committed community of surfers brave these conditions, often combining morning surfs with afternoon powder runs.
Water temp
8°C
Wetsuit
6/5mm + boots, gloves, hood
Difficulty
6/10
Crowd level
1/10
Access: Near Sapporo. The same road to Niseko ski resorts.
Peak: Dec, Jan, Feb, Mar
Secondary: Nov, Apr
Winter only. Same storms that bring powder to ski resorts.
Verified by Stormrider, local hardcore crew
How well swell angle matches the spot
Wave height in the ideal range
Each spot has different period requirements. Points and reefs can handle longer periods than beaches.
Offshore/glassy conditions