Strike Mission
Beach
both
Level 3/10

Hamaatsuma Beach

Tomakomai, Japan
🌀Strong rips

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. The water is cold year-round—even summer requires at least a 3/2 wetsuit—but the tradeoff is uncrowded waves and an authentic Japanese surf experience far from the Tokyo masses. August through November offers the best combination of warmer water and typhoon swells.

3-Day Forecast
Today
30
27
Poor
0.7m
@11s
27km/h
Tue
31
46
Fair
0.8m
@8s
7km/h
Wed
1
56
Fair
1.5m
@12s
17km/h
+7
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View 2-year historical scores →

Today's Conditions

Swell
0.7m
SE(139°)
Score: 9/25
Period
11s
Medium period swell
Score: 25/25
Wind
27km/h
SE(141°)
Score: 0/25
Weather
2°C
0.0mm97%
Windswell Component
0.4mSE@3s
Secondary Swell
0.2mSSE
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
afternoon
AM: 28 km/h SE|PM: 27 km/h SSE
Lighter winds later (27 km/h)

Location & Conditions

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0°45°90°135°180°225°270°315°NESW
Swell
Wind
View in OpenStreetMap
Showing forecast for today

Tide Times

2:04 am
High tide - 0.13m
7:12 am
Low tide - -0.24m
1:00 pm
High tide - 0.25m
7:42 pm
Low tide - -0.59m
Times shown in spot-local time.

Strike Score Breakdown

27
Poor
Components
Swell Direction17/25
Swell Size9/25
Swell Period25/25
Wind0/25
Raw Score51/100
Adjustments
🤢 Wind History-11
🌊💨 Windswell-3
⚠️ Weak Component-10
Adjusted Score27/100
Confidence
Multiplier×1.00
Final Score27
🤢 Morning Sickness👥 Spring Break

Spot Details

Swell Requirements

Optimal direction
SSE (150°)
Direction range
110° - 190°
Size range
0.6m - 2m
Ideal size
1.6m
Height multiplier
1.00×
Ideal period
11s+

Wind Requirements

Optimal direction
N (0°)
Offshore range
320° - 40°

Tide Requirements

Optimal tide
all
Optimal range
0.2m - 1.3m

Water temp

15°C

Wetsuit

4/3mm fullsuit

Difficulty

3/10

Crowd level

2/10

👥 Spring Break (Mar 25 – Apr 6) — expect extra crowds

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

Best Season

Peak: Aug-Nov

Secondary: Jun, Jul

Typhoon season best. Summer warmest water.

Getting There

Airport
CTS
Drive time
45 min
Data quality
verified

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107km
Beach
Lvl 6/10

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