Beach

both

Level 2/10

Onjuku Beach

Onjuku, Japan

🌀Strong rips

Onjuku is Chiba's mellow alternative to the competitive intensity of Tsurigasaki. This family-friendly beach town offers gentle waves that are perfect for beginners and longboarders, with a relaxed atmosphere featuring seafood restaurants and small guesthouses. The wave is forgiving, the local vibe is welcoming, and the train access from Tokyo makes it an easy day trip. When typhoon swells hit, even Onjuku can produce surprisingly fun walls.

10-Day Forecast

Today

Poor

2.0mSE

@10s

31km/h

Wed

Poor

1.6mENE

@11s

20km/h

Choppy

Thu

Fair

1.7mESE

@10s

20km/h

Fri

Good

1.4mSE

@10s

10km/h

Sat

Fair

1.8mSSW

@9s

13km/h

Sun

Fair

1.4mNE

@8s

17km/h

Groomed

Mon

Fair

1.1mNE

@10s

11km/h

Tue

Good

1.3mESE

@9s

4km/h

Wed

Poor

1.5mS

@9s

23km/h

Thu

Poor

1.6mNE

@10s

14km/h

Choppy

Today

Tue, Jan 20

2.0m @ 10s SE

31 km/h NNW

Wed

Wed, Jan 21

1.6m @ 11s ENE

20 km/h NNW

Choppy

Thu

Thu, Jan 22

1.7m @ 10s ESE

20 km/h NW

Fri

Fri, Jan 23

1.4m @ 10s SE

10 km/h WSW

Sat

Sat, Jan 24

1.8m @ 9s SSW

13 km/h WSW

Sun

Sun, Jan 25

1.4m @ 8s NE

17 km/h NNW

Groomed

Mon

Mon, Jan 26

1.1m @ 10s NE

11 km/h NE

Tue

Tue, Jan 27

1.3m @ 9s ESE

4 km/h ESE

Wed

Wed, Jan 28

1.5m @ 9s S

23 km/h ESE

Thu

Thu, Jan 29

1.6m @ 10s NE

14 km/h N

Choppy

Today's Conditions

Swell

2.0m

SE(130°)

Score: 8/25

Period

10s

Medium period swell

Score: 25/25

Wind

31km/h

NNW(340°)

Score: 2/25

Weather

10°C

0.0mm42%

Windswell Component

0.5mE@3s

Secondary Swell

0.7mE

Forecast Confidence

100%

Sources: open-meteo-marine, open-meteo-weather

Best Session

afternoon

Strike Score Breakdown

Poor

Swell Direction

4/25

How well swell angle matches the spot

Swell Size

8/25

Wave height in the ideal range

Swell Period

25/25

Each spot has different period requirements. Points and reefs can handle longer periods than beaches.

Wind

2/25

Offshore/glassy conditions

Total Score39/100

Location & Conditions

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Swell

Wind

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Showing forecast for today

Spot Details

Swell Requirements

Optimal direction: E (100°)
Direction range: 60° - 150°
Size range: 0.5m - 2m
Ideal period: 11s+

Wind Requirements

Optimal direction: W (270°)
Offshore range: 230° - 310°
Best window: morning

Tide Requirements

Optimal tide: all
Optimal range: 0.2m - 1.4m

Water temp

22°C

Wetsuit

Springsuit / 2mm

Difficulty

2/10

Crowd level

5/10

Access: Train to Onjuku station, beach is walkable.

Getting There

Airport

NRT

Drive time

90 min

Best Season

Peak: Jul-Oct

Secondary: Nov, Dec, Jan, Feb

Summer typhoon swells best. Gentle winter waves.

Data Quality

verified

Verified by Surf Atlas, local guides