Surfing Hamaatsuma Beach: The Complete Guide

Hamaatsuma Beach is a sandy-bottom beach break located in Tomakomai, Japan, offering both lefts and rights along Japan's coastline. Hamaatsuma is Hokkaido's most accessible surf spot, a beginner-friendly beachbreak south of New Chitose Airport with consistent 2-foot waves and full facilities. Rated as beginner-friendly difficulty with uncrowded conditions, this beach break is a worthy destination for surfers looking beyond the usual suspects.

Best Conditions

Swell Direction: The ideal swell direction is SSE (150°), with workable conditions from ESE to S (110°–190°). Swells outside this window will either miss the break or produce disorganized waves.

Swell Size: Hamaatsuma Beach needs a minimum of 0.6m / 2ft to start working and handles swells up to 2m / 7ft before conditions deteriorate.

Swell Period: Look for a swell period of at least 7 seconds, with 11 seconds being the sweet spot. Longer periods deliver more organized, powerful waves with better shape.

Wind: True offshore here blows from the N (0°). The full offshore range spans NW to NE (320°–40°). Glassy conditions under 4km/h from any direction also produce excellent surf. Plan for early morning dawn patrol sessions.

Tide: This spot works best at all tides. Optimal tide range is 0.2m–1.3m.

When to Go

Primary Season: The prime window at Hamaatsuma Beach runs August, September, October, November (Aug–Nov). This is when swell consistency and direction align most reliably with the break.

Secondary Season: A secondary window opens June, July (Jun–Jul). While not as consistent, patient surfers can still score quality sessions during this period.

Season Notes: Typhoon season best. Summer warmest water.

Water Temperature: Expect water temperatures around 15°C / 59°F. Bring a 3/2mm wetsuit — 4/3mm in winter months.

Getting There

The nearest airport is CTS, roughly 45 minutes by car.

Access: South of New Chitose Airport. Parking and facilities.

Hazards & Tips

Known Hazards:

🌀 Strong rips — Dangerous currents

Cold water year-round. Full wetsuit required even summer.

Safety Tips:

Study the currents before paddling out. Know your exit strategy

Skill Level: This spot is rated beginner-friendly (3/10). Crowd Level: Typically uncrowded (2/10).

Check the Live Forecast

Planning a session at Hamaatsuma Beach? Check the live forecast on Strike Mission to see today's conditions and the 10-day outlook. Our Strike Score algorithm rates this spot from 0 to 100 every day, factoring in swell direction, size, period, wind, and tide — so you know exactly when to paddle out.

Don't leave your next surf trip to chance. Let the data tell you when Hamaatsuma Beach is firing.

*Conditions data sourced from Strike Mission's verified spot database.*