Beach
right
Level 6/10

Shioya Beach

Otaru, Japan
🌀Strong rips🏝️Remote

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.

Shioya Beach surf forecast

Model forecast for swell, wind and tide.

10-Day Forecast
Today20
5
Poor
0.0m@3s
3km/h
Mon21
15
Poor
0.1m@3s
5km/h
Tue22
0
Poor
0.5m@5s
20km/h
Wed23
0
Poor
0.5m@4s
13km/h
Thu24
16
Poor
0.6m@5s
10km/h
Fri25
5
Poor
0.5m@4s
8km/h
Sat26
0
Poor
0.3m@3s
6km/h
Sun27
15
Poor
0.4m@6s
8km/h
Mon28
2
Poor
0.4m@5s
13km/h
Tue29
15
Poor
0.6m@5s
10km/h
5+ days out, less certain

Today's Conditions

Find Flights
Best session: MorningAM 1 km/h · PM 5 km/h · Tide at 5am (0.2m)
Swell
0.0m
N(351°)
Score: 0/25
Period
3s
Short period / windswell
Score: 0/25
Wind
3km/h
WNW(287°)
Score: 20/25
Weather
19°C
0.0mm54%
First light 4:50amSunrise 5:20amSunset 5:38pmLast light 6:08pm
Confidence
100%

Location & Conditions

Loading map...
0°45°90°135°180°225°270°315°NESW
Swell
Wind
Showing forecast for today

Hourly Forecast, Tide & Strike Windows

No ideal tide during daylight todayIdeal tide: 0.3–1.4m
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
°C
18°
19°
20°
20°
17°
15°
21°
22°
20°
17°
17°
19°
19°
19°
17°
12°
18°
21°
20°
16°
16°
18°
16°
16°
15°
12°
17°
18°
18°
14°
15°
19°
21°
22°
20°
18°
20°
19°
17°
15°
15°
18°
19°
19°
17°
16°
19°
20°
19°
15°
2m1.0
sec
4s
4s
4s
3s
2s
2s
3s
4s
4s
4s
4s
5s
6s
6s
6s
4s
4s
4s
4s
4s
5s
5s
5s
6s
4s
4s
4s
4s
4s
4s
4s
4s
3s
3s
3s
6s
6s
5s
6s
5s
5s
5s
5s
4s
4s
5s
5s
5s
5s
5s
swell
windkm/h
0g3
2g9
3g13
7g21
3g6
5g11
3g13
7g23
6g22
2g9
22g43
22g51
23g54
18g46
14g33
12g22
10g26
15g37
16g38
15g37
10g42
9g26
14g35
10g32
11g26
12g27
9g29
9g30
9g30
2g31
3g13
1g14
5g19
11g25
9g26
4g19
3g19
9g31
14g42
10g40
11g30
12g31
13g35
14g37
15g37
16g37
15g34
6g34
10g33
5g30
tidem
5:30am0.2m
4:30pm0.1m
4:30am0.3m
6:30pm0.1m
3:30am0.3m
7:30am0.3m
7:50pm0.1m
2:30am0.2m
8:00am0.2m
12:30pm0.2m
7:30pm0.1m
3:10am0.3m
8:50am0.2m
1:00pm0.3m
8:30pm0.1m
3:00am0.2m
8:50am0.1m
1:30pm0.2m
9:00pm0.0m
3:10am0.2m
8:30am0.1m
2:50pm0.2m
9:00pm0.1m
3:30am0.2m
9:00am0.1m
3:30pm0.3m
10:00pm0.2m
3:10am0.3m
9:30am0.1m
4:30pm0.3m
10:00pm0.2m
3:50am0.3m
Ideal tideStrike windowNight

Tide times today

5:30 am
High tide - 0.21m
4:30 pm
Low tide - 0.08m
Times shown in spot-local time.

Strike Score Breakdown

5
Poor
Components
Swell Direction3/25
Swell Size0/25
Swell Period0/25
Wind20/25
Raw Score23/100
Adjustments
🌊 Tide-1
⚠️ Weak Component-5
📉 Undersized Swell-12
🚫 Undersized Capmax 15
Adjusted Score5/100
Confidence
Multiplier×1.00
Final Score5
🌊 Slightly below optimal tide👥 Respect for the Aged Day

Plan Your Strike

Return flights to CTS, departing today with a 5-day trip window.

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Swell Requirements

Optimal direction
WNW (300°)
Direction range
270° - 340°
Size range
1m - 3m
Ideal size
1.9m - 2.5m
Height multiplier
0.92×
Ideal period
9s+

Wind Requirements

Optimal direction
E (90°)
Offshore range
50° - 130°

Tide Requirements

Optimal tide
mid
Optimal range
0.3m - 1.4m

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.

Frequently Asked Questions

What tide is best at Shioya Beach?

The Shioya Beach profile favors mid tide, ideally between 0.3m and 1.4m on the local tide chart. Compare this preference with the forecast tide and local conditions before choosing a session.

What wind direction is offshore at Shioya Beach?

The Shioya Beach profile uses wind from E (90°) as its preferred direction, with an offshore range of 50° to 130°. Wind speed matters too: light winds outside that range can still produce surfable conditions, while strong offshore winds can make takeoffs difficult.

What swell size and direction work best at Shioya Beach?

The Shioya Beach scoring profile favors swell from WNW (270° to 340°), a swell-height range of 1m to 3m, and a reference period of 9s. These are model inputs, not guaranteed breaking-wave heights or a promise that the surf will suit every ability.

When is the best time of year to surf Shioya Beach?

The main season at Shioya Beach is Dec, Jan, Feb, Mar. A secondary window runs Nov, Apr. Winter only. Same storms that bring powder to ski resorts.

How do I get to Shioya Beach?

The spot profile lists CTS as a nearby airport. The estimated road transfer is 40 minutes. Near Sapporo. The same road to Niseko ski resorts.

What kind of wave is Shioya Beach?

Shioya Beach is a beach break, a right-hander. Difficulty is rated 6/10.

Best Season

Peak: Dec, Jan, Feb, Mar

Secondary: Nov, Apr

Winter only. Same storms that bring powder to ski resorts.

Getting There

Airport
CTS
Drive time
40 min
Data quality
verified

Strike Log

Community Discussion