Surf Forecasts:
Ohara surf forecast from 12 Aug 2026:
- Best quality surf: Saturday 15 Aug, 12AM (local time) - 5ft (1.5m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 3PM (local time) - 8ft (2.5m), 10s period, E swell with 1,506 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 12AM (local time) - 5ft (1.5m), 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 Saturday (Aug 15) at 12AM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 0.6m and 10s. 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 2.5m 10s and forecast to arrive on Sunday (Aug 16) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Wednesday (Aug 12) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sat 15th Aug) | 5ft (1.5m) 10s |
| Best Surf | 12AM (Sat 15th Aug) | 5ft (1.5m) 10s |
| Most Powerful | 3PM (Sun 16th Aug) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright, let’s break it down. Ohara’s been trying to get its act together, but most of this run is a bust. The first real light at the end of the tunnel is Wednesday 27 August, and that’s where you need to focus.
The water’s a warm 82°, which is about 2° above the usual for this time of year – nothing crazy, but you’ll notice it when you’re sitting in the line-up.
The early part of the forecast is a long, slow burn. From Wednesday 12 August through to Monday 25 August, it’s a stretch of flat, messy days. Yeah, there’s swell – we get a spike to 8ft on Sunday 16 August with combined energy of 2696 – but the wind is cross-on and choppy, wrecking any chance of clean waves. There’s a few days with a cross-off breeze, but the swell is too small to care about. You’d be better off waxing your board and waiting.
The real standout is Wednesday 27 August. Thursday morning, the wind goes glassy, and we’ve got a 6ft swell from the ENE with a period of 7 seconds. That’s a short period, so it’ll be a bit fast and lumpy, but the combined energy of 391 is enough to push through some fun, punchy little waves. The key is the wind – glassy, zero. That means clean, smooth faces, no bump. It’s not a big groundswell, but at a beach break like Ohara, it’ll be plenty rideable. Then Thursday afternoon, the wind swings to a gentle offshore from the south, and the swell ticks up to 6ft with 418 energy. That’s the best of the whole forecast. The offshore breeze will hold the faces up, and with the ENE direction, it’s got some shape.
Now, a heads-up: Ohara is inconsistent, and crowds can be a thing sometimes. But on a day with glassy conditions and a clean 6ft, you’ll regret not showing up. Go for the morning glass, or the afternoon offshore. That’s the one.
The rest of the run after that? Monday 25 August has a clean offshore morning but only 2ft – not enough to get excited about. Tuesday 26 August has a glassy afternoon with 2ft, but it’s weak. And then Wednesday 27 only gets one good morning before it fades back to small stuff.
Bottom line: if you’ve got the patience to wait, Wednesday 27 August is the day. Clean, glassy, decent energy. Don’t expect anything before that.
Rusty.
Short Range ForecastHeavy rain (total 40mm), heaviest during Fri night. Warm (max 27°C on Thu morning, min 23°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat morning. Warm (max 27°C on Sat morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
AM | 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) | ESE 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | ESE 10 | E 10 | E 11 | E 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | SSE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 669 | 201 | 318 | 383 | 426 | 434 | 443 | 434 | 414 | 484 | 495 | 734 | 1018 | 1506 | 1379 | 919 | 739 | 322 | 185 | 119 | 178 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | on | cross-on | cross | cross-on | cross-on | cross-on | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | off | cross-off |
High Tide | 5:12PM1.36m | 3:41AM1.48m | 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 | ||||||||
Low Tide | 10:08AM0.01m | 10:16PM0.88m | 10:46AM0.04m | 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 | |||||||
 |  |  | |  |  | | | | | |  | | | | |  | | | | | |
 | 4:54 | — | — | 4:54 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — |
 | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:23 | — |
mm | 8 | 7 | — | 2 | — | 3 | 1 | — | 19 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 24 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 26 | 24 | 25 | 25 | 24 | 25 | 26 | 25 |
Feels °C | 26 | 27 | 27 | 29 | 29 | 28 | 28 | 29 | 28 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | S 6 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | ESE 10 | E 10 | E 11 | E 10 | SSW 9 | ENE 9 | ENE 8 | ENE 8 | SSE 10 |
| kJ | 34 | 201 | 318 | 383 | 426 | 434 | 443 | 434 | 414 | 484 | 495 | 476 | 1018 | 1160 | 1379 | 919 | 29 | 322 | 185 | 119 | 178 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 9 | SSW 9 | S 9 | S 10 | S 11 | S 10 | S 9 | S 9 | S 10 | S 9 | SSW 10 | SE 11 | SSW 8 | SSW 9 | SSE 10 | E 9 |
| kJ | 53 | 53 | 51 | 71 | 48 | 29 | 28 | 40 | 67 | 63 | 53 | 41 | 27 | 30 | 25 | 31 | 19 | 24 | 25 | 68 | 38 |
Swell 3 Height (m) Direction Period (s) | SE 13 | S 6 | S 5 | — | SE 12 | SSE 11 | SE 11 | SSE 11 | S 13 | SSE 10 | SSE 8 | SE 12 | SSW 11 | — | — | SE 16 | SE 16 | SE 10 | SE 10 | S 15 | NE 8 |
| kJ | 6 | 16 | 8 | — | 6 | 12 | 30 | 23 | 50 | 31 | 6 | 6 | 24 | — | — | 10 | 10 | 28 | 27 | 4 | 20 |
Wind waves Height (m) Direction Period (s) | ESE 9 | E 5 | — | — | — | — | — | — | — | — | — | E 9 | — | E 10 | — | — | ENE 9 | — | — | SW 4 | SW 4 |
| kJ | 669 | 53 | — | — | — | — | — | — | — | — | — | 734 | — | 1506 | — | — | 739 | — | — | 15 | 18 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 94 | 72 | 6 | 9 | 9 | 9 | 58 | 58 | 0 | 72 | 72 | 30 | 58 | 58 | 6 | 58 | 9 | 6 | 9 | 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.
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