
Surf Forecasts:
Ohara surf forecast from 9 Aug 2026:
- Best quality surf: Monday 17 Aug, 9AM (local time) - 6ft (1.9m), 9s period, ENE swell with cross-offshore winds.
- Most powerful swell: Monday 10 Aug, 12PM (local time) - 8ft (2.5m), 12s period, ENE swell with 1,774 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 9AM (local time) - 4ft (1.2m), 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 Wednesday (Aug 12) at 9AM. The primary swell is predicted to be 1.2m 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 12s and forecast to arrive on Monday (Aug 10) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 8s period and expected on Tuesday (Aug 11) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Wed 12th Aug) | 4ft (1.2m) 10s |
| Best Surf | 9AM (Mon 17th Aug) | 6ft (1.9m) 9s |
| Most Powerful | 12PM (Mon 10th Aug) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. We’ve got a bit of a mixed bag coming our way at Ohara. The opening of the period looks rough, with a big, messy swell and strong cross-onshore winds making it a write-off. The water is sitting at a warm 81°, which is about average for the time of year, so nothing unusual there.
The first few days are a tough watch. Monday the 10th and Tuesday the 11th are seeing a solid 7ft east swell, but with fresh onshore winds and a big, lumpy sea state, it’s just not surfable. The combined energy is very strong (1529 on Monday morning), but it’s all wasted. By Tuesday afternoon we get a slight improvement as the wind swings lighter and cross-shore, dropping the swell to 6ft, but the conditions are still only marginal.
Wednesday the 12th offers the first real chance. The swell drops to 4ft from the east, but early morning we get a clean, cross-offshore breeze from the southeast. The energy is moderate at 346, and it’s a small, clean day for a log or a funboard. Not a standout, but a window.
Thursday the 13th through Saturday the 15th is another rough patch. Swell builds back up to 5ft to 7ft, but the wind is either onshore or cross-onshore and choppy. It’s a mess out there. The energy is moderate to strong, peaking at 939 on Saturday morning, but the quality just isn’t there.
Sunday the 16th is still poor with strong, messy winds, but then we get a real shift. Monday the 17th is the standout. The swell is a solid 6ft from the ENE, but the key is a light, cross-offshore west wind making for clean conditions. The combined energy is strong (729), and this is the best window for an intermediate surfer to get some proper waves. The swell period is 9 seconds, so it’s a short-period wind swell, but the clean faces will make it fun. Keep in mind, Ohara can be inconsistent, so it’s worth jumping on this day.
Tuesday the 18th is also decent with a smaller 4ft east swell and light offshore winds in the afternoon, giving clean, small waves. After that, the swell fades. From Wednesday the 19th onward, it drops below 4ft and the energy falls off a cliff, down to 159 by Thursday. There’s a long gap of small, weak surf with light winds through the end of the week.
The following week gets interesting again. Around Sunday the 23rd, the swell picks back up with a very long-period 13-second groundswell from the east, but it’s tiny at 2ft. The energy is weak (209), but the offshore winds are clean. Then, a bigger pulse arrives late on Tuesday the 25th with a 5ft swell from the SSE, a 12-second period, and moderate energy (652), but the winds are fresh and cross-offshore, which might make it a bit bumpy. That one is a promising but less certain long-range call.
Overall, Monday the 17th is your best bet for a proper session. Get on it.
Rusty.
Short Range ForecastHeavy rain (total 38mm), heaviest during Tue afternoon. Warm (max 26°C on Mon morning, min 22°C on Mon night). Winds decreasing (fresh winds from the NNE on Mon night, light winds from the NE by Wed afternoon). | Days 4-6 Weather SummaryHeavy rain (total 39mm), heaviest during Sat night. Warm (max 27°C on Thu morning, min 22°C on Sat night). Winds increasing (light winds from the ENE on Fri night, fresh winds from the NNE by Sat night). | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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) | E 12 | E 11 | ENE 10 | E 12 | E 12 | E 11 | E 10 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 10 | E 10 | E 10 | E 9 | E 9 |
Wave Graph | |||||||||||||||||||||
1344 | 1213 | 920 | 1319 | 827 | 790 | 266 | 235 | 288 | 390 | 474 | 592 | 703 | 592 | 838 | 874 | 821 | 539 | 524 | 539 | 481 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross | off | cross-off | cross-on | on | cross-on | cross-on | on | on | cross-on | cross | cross-on | cross-on | on | on | cross-on | cross-on |
High Tide | 4:26PM1.30m | 1:39AM1.38m | 4:49PM1.34m | 2:45AM1.44m | 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 | ||||||||
Low Tide | 8:49PM1.11m | 9:24AM0.04m | 9:36PM1.00m | 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 | ||||||||
4:52 | — | — | 4:54 | — | — | 4:54 | — | — | 4:54 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | |
— | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | |
mm | — | — | — | — | 15 | 15 | 6 | 2 | — | 2 | — | — | — | 2 | 6 | 14 | 4 | 11 | — | — | 1 |
Temp °C | 26 | 26 | 23 | 26 | 23 | 24 | 25 | 26 | 25 | 27 | 27 | 25 | 27 | 27 | 26 | 25 | 25 | 24 | 25 | 24 | 23 |
Feels °C | 25 | 24 | 21 | 24 | 24 | 24 | 26 | 28 | 27 | 29 | 28 | 27 | 29 | 30 | 29 | 25 | 24 | 21 | 21 | 20 | 23 |
Swell 1 Height (m) Direction Period (s) | E 12 | SSW 11 | S 10 | E 12 | E 12 | E 11 | E 10 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | ENE 10 | SSE 9 | SSW 11 | E 10 | E 10 | E 9 | E 9 |
1344 | 97 | 55 | 1319 | 827 | 790 | 266 | 235 | 288 | 390 | 474 | 592 | 703 | 592 | 838 | 47 | 40 | 539 | 524 | 539 | 481 | |
Swell 2 Height (m) Direction Period (s) | S 11 | SSW 11 | SE 14 | S 11 | NE 9 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSE 9 | SSW 9 | SSE 13 | S 12 | S 10 | SSE 11 | SSE 11 |
93 | 91 | 8 | 57 | 294 | 74 | 75 | 75 | 51 | 50 | 49 | 29 | 28 | 28 | 29 | 8 | 16 | 102 | 77 | 81 | 78 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 11 | — | SW 11 | S 11 | SW 10 | SSE 4 | SSE 12 | SE 12 | — | SE 12 | SSE 11 | SE 12 | SE 11 | SSW 9 | S 11 | SSE 10 | SSE 12 | SSE 12 | S 10 | S 9 |
23 | 103 | — | 43 | 58 | 69 | 5 | 13 | 6 | — | 6 | 13 | 35 | 29 | 15 | 10 | 10 | 93 | 93 | 47 | 43 | |
Wind waves Height (m) Direction Period (s) | NNE 5 | E 11 | ENE 10 | NE 9 | NW 4 | SSW 3 | — | NE 8 | NE 8 | — | — | — | NNE 4 | NE 4 | NNE 5 | ENE 10 | ENE 10 | — | — | — | — |
69 | 1213 | 920 | 727 | 12 | 8 | — | 82 | 57 | — | — | — | 28 | 32 | 107 | 874 | 821 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 64 | 58 | 58 | 9 | 6 | 559 | 0 | 9 | 6 | 9 | 24 | 9 | 9 | 9 | 9 | 213 | 563 | 213 | 206 | 106 | 53 |
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.











