Surf Forecasts:
Ohara surf forecast from 13 Aug 2026:
- Best quality surf: Friday 14 Aug, 3AM (local time) - 6.5ft (2.0m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 3AM (local time) - 6.5ft (2.0m), 10s period, E swell with 816 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 3AM (local time) - 6.5ft (2.0m), 10s period with E swell.
Best Forecast Surf Conditions for Ohara this week:
The surf forecast for Ohara over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 14) at 3AM. The primary swell is predicted to be 2.0m and 10s period with a secondary swell of 1.7m and 10s. Another secondary swell of 0.4m and 9s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ohara in the next 16 days are 2.0m 10s and forecast to arrive on Friday (Aug 14) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Aug 20) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Fri 14th Aug) | 6.5ft (2.0m) 10s |
| Best Surf | 3AM (Fri 14th Aug) | 6.5ft (2.0m) 10s |
| Most Powerful | 3AM (Fri 14th Aug) | 6.5ft (2.0m) 10s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's talk about what's coming up for Ohara over the next couple of weeks.
We've got a slow start, but there's some serious juice building way out there. The water is sitting at 80°, which is pretty much average for this time of year.
Thursday afternoon kicks off with a stormy vibe and a 6ft swell from the east, period around 10 seconds. The combined energy is moderate (600). The wind is a cross-offshore, so it'll be clean, but the forecast is pretty marginal. It's surfable, but nothing to get excited about. Friday morning is similar, with a 5ft E swell, but the wind goes cross, so it gets a bit ripply. The rest of the weekend and into Monday is a washout. The wind swings cross-on or onshore, and the swell gets short and choppy. The combined energy drops, and the conditions are just poor. Take a few days off.
Now, Tuesday the 18th and Wednesday the 19th is where we see a flicker of hope. Tuesday morning, the swell drops to 4ft from the east, but the wind is clean offshore from the south. The combined energy is weak (273), but it's clean. It's a small window of clean, tiny waves. Wednesday sees the swell drop further to 3ft, and the wind is offshore again. It's a tiny wave, but it's clean.
Then we hit a big gap. From Thursday the 20th through to Saturday the 22nd morning, the swell is tiny and the wind is messy. Not much happening.
But strap in, because the second week is a monster. The standout window is from Sunday the 23rd through to Thursday the 27th. This is big, powerful, and dangerous. A massive long-period groundswell from the south arrives. Sunday the 23rd sees a 6ft swell from the SE with a 15-second period, and the combined energy jumps to 2121. That's strong. By Monday the 24th, we're looking at a 10ft swell from the SSE with a 16-second period, and the energy is through the roof at 3764. The wind is light cross-on, but the report flat out says this break is too big for these conditions. This is not for the faint of heart. The swell peaks around Wednesday the 26th with a 13ft S swell and a combined energy of 8426, and then Thursday the 27th hits a 33ft monster from the south with energy hitting 49228. Even with offshore winds, this is a massive, expert-only, potentially life-threatening situation. The sheer size and the long period of that groundswell means it will be breaking straight and heavy, especially at a beach break. This is more of a survival mission than a fun session.
After that big pulse drops, Friday the 28th morning looks a lot more manageable. A 6ft swell from the south, period dropping to 8 seconds, clean offshore wind, and a combined energy of 507. The conditions are described as "very good." This is your best chance for a solid, clean, and fun session after the chaos, but it's still a decent size for most.
So, the honest truth: the best on offer is the clean, offshore glass on Friday the 28th morning. The size is good, the wind is perfect, and the crowds at Ohara (sometimes) might be manageable. The big stuff from the 23rd to the 27th is a spectacle, but for the vast majority, it's a no-go zone. If you're an expert on a big-wave gun, you might be looking at it, but the conditions are marginal due to the sheer size. For the average surfer, wait for that Friday morning session.
Rusty.
Short Range ForecastHeavy rain (total 46mm), heaviest during Thu night. Warm (max 27°C on Thu afternoon, min 24°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Mon morning. Warm (max 28°C on Wed morning, min 23°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | ESE 9 | ESE 10 | E 8 | E 8 | ESE 10 | ESE 10 | E 10 | E 10 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 |
Wave Graph | ||||||||||||||||||||
541 | 573 | 530 | 459 | 479 | 423 | 409 | 426 | 253 | 217 | 720 | 616 | 561 | 361 | 234 | 194 | 123 | 99 | 103 | 79 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | off | off | off | cross-off | cross-off | off | cross-off |
High Tide | 5:34PM1.37m | 4:31AM1.49m | 5:55PM1.38m | 5:18AM1.46m | 6:15PM1.39m | 6:04AM1.38m | 6:35PM1.39m | 6:49AM1.29m | 6:55PM1.40m | 7:36AM1.17m | 7:14PM1.39m | 8:31AM1.06m | 7:35PM1.36m | |||||||
Low Tide | 10:53PM0.75m | 11:21AM0.12m | 11:31PM0.63m | 11:52AM0.24m | 00:09AM0.53m | 12:20PM0.38m | 00:47AM0.46m | 12:44PM0.53m | 1:27AM0.43m | 1:05PM0.67m | 2:11AM0.43m | 1:20PM0.80m | ||||||||
— | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | |
6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:23 | — | — | 6:22 | — | |
mm | 9 | 23 | 4 | 1 | 6 | 2 | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 27 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 24 | 26 | 26 | 25 | 27 | 27 | 26 | 28 | 28 | 26 |
Feels °C | 29 | 29 | 30 | 29 | 27 | 27 | 26 | 26 | 25 | 26 | 25 | 29 | 27 | 27 | 29 | 29 | 29 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 10 | E 10 | E 10 | E 10 | E 10 | E 10 | ESE 9 | ESE 10 | SE 9 | ESE 9 | ESE 10 | ESE 10 | E 10 | E 10 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 |
48 | 573 | 530 | 459 | 479 | 423 | 409 | 383 | 41 | 145 | 720 | 616 | 561 | 361 | 234 | 194 | 123 | 99 | 103 | 79 | |
Swell 2 Height (m) Direction Period (s) | SE 12 | SSW 9 | SSW 9 | SSW 9 | S 10 | SSE 9 | S 10 | S 9 | SSW 10 | S 10 | S 9 | SSW 9 | SSW 9 | SSW 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | S 8 |
6 | 28 | 28 | 27 | 70 | 45 | 52 | 44 | 31 | 46 | 25 | 26 | 25 | 13 | 28 | 27 | 36 | 35 | 35 | 49 | |
Swell 3 Height (m) Direction Period (s) | S 16 | S 12 | SE 11 | SSE 11 | S 12 | SSW 11 | SSE 8 | SE 18 | SE 12 | SE 12 | SE 11 | SE 16 | SE 16 | S 16 | S 8 | S 8 | SSW 8 | SSW 8 | SSE 6 | SE 10 |
5 | 11 | 30 | 24 | 11 | 40 | 7 | 12 | 22 | 22 | 30 | 10 | 10 | 5 | 11 | 10 | 12 | 7 | 8 | 35 | |
Wind waves Height (m) Direction Period (s) | E 10 | — | — | — | — | — | — | E 10 | E 8 | E 8 | — | — | — | — | — | S 3 | S 3 | S 3 | SSW 3 | SSW 2 |
541 | — | — | — | — | — | — | 426 | 253 | 217 | — | — | — | — | — | 1 | 1 | 1 | 1 | 1 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 58 | 8 | 9 | 58 | 8 | 58 | 111 | 9 | 58 | 58 | 9 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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Information about the Ohara Surf forecast
The above surf forecast table for Ohara provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ohara can be found by selecting the local surf guide option on the grey menu. Our Ohara surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ohara) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Ohara may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Ohara is 2 km (1 miles) from Ohara. If you plan a holiday in Chiba, look for hotels and other accommodation in Ohara. Ohara has rooms for a wide range of budgets as well as car hire and transport links.











