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.
Model forecast for swell, wind and tide.
Return flights to NRT, departing today with a 5-day trip window.
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Water temp
22°C
Wetsuit
Springsuit / 2mm
Difficulty
2/10
Crowd level
5/10
Access: Train to Onjuku station, beach is walkable.
Onjuku Beach is a beach break in Onjuku, Japan, with peaks that run both left and right.
Onjuku Beach picks up swell from the E round to the SSE, and it's best when it's coming straight out of the E. It starts working at around 0.5m and handles up to about 2m, with the sweet spot around 1.2 to 1.6m. Period matters too: aim for 11s or longer, as anything under 7s tends to be weak. These are the numbers our scoring uses, so treat them as a guide rather than a promise.
A W wind is dead offshore at Onjuku Beach, and anything from the SW round to the NW keeps it clean. The morning is typically the best window, roughly 5am to 10am. Light winds from other directions can still be fine; strong offshores can make it hard to get into waves.
Onjuku Beach has a preferred tide range, roughly 0.2m to 1.4m on the local chart.
The most reliable run of swell at Onjuku Beach comes Jul to Oct. There's a second window in Nov to Feb too. Summer typhoon swells best. Gentle winter waves.
The water at Onjuku Beach averages around 22°C, so you'll want a springsuit or 2mm. It shifts a few degrees through the year, so check the season before you pack.
Yes, it's one of the friendlier waves around, rated 2/10 for difficulty. Expect a moderate crowd (5/10) when it's on. Family-friendly but watch for rips on bigger days.
The nearest airport on our list is NRT, then it's roughly a 1.5-hour drive. Train to Onjuku station, beach is walkable.
The closest breaks we track are Katsuura (5.5 km) and Tsurigasaki Beach (Shidashita) (22 km), handy when Onjuku Beach isn't working.
Peak: Jul-Oct
Secondary: Nov, Dec, Jan, Feb
Summer typhoon swells best. Gentle winter waves.
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