Surf Forecasts:
Ohara surf forecast from 1 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 9AM (local time) - 10ft (3.0m), 11s period, SSE swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 9PM (local time) - 15ft (4.5m), 12s period, SSE swell with 4,949 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 3AM (local time) - 3ft (0.9m), 11s period with ESE 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 (Sep 02) at 3AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.8m and 7s. 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 4.5m 12s and forecast to arrive on Tuesday (Sep 08) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 2nd Sep) | 3ft (0.9m) 11s |
| Best Surf | 9AM (Tue 8th Sep) | 10ft (3.0m) 11s |
| Most Powerful | 9PM (Tue 8th Sep) | 15ft (4.5m) 12s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright, folks, Rusty here. I’ve been staring at the charts for our little corner of the world, and it’s a tale of two halves. We’ve got a quiet start, then a massive pulse of energy that’s going to be a handful.
First up, we’ve got Ohara. It’s an inconsistent spot, so it takes a good lineup of conditions to get it going. The water temp is about average for this time of year.
We start off slow. Wednesday the 2nd and Thursday the 3rd of September offer some small, clean waves, with a light breeze and a bit of a cross-off wind. Swell is around 3ft to 3ft from the ESE, with a period of 10 seconds. The combined energy is moderate (205-275). It’s surfable, but nothing to write home about. Then things go a bit ugly from Friday the 4th through Saturday the 6th. The wind swings onshore, the rain comes in, and the surf gets choppy and messy. Not worth your time.
Now, here’s where it gets interesting. Sunday the 7th of September has a big jump in the forecast. Monday morning looks a bit iffy with a 6ft swell and onshore wind, but the afternoon is where the magic starts. That afternoon, a 7ft swell from the south with a 12-second period kicks in, and the wind goes cross-offshore. The combined energy is very strong (1508). This is the start of the good stuff.
From Tuesday the 8th to Thursday the 10th of September, the swell really pumps up. We’re looking at 10ft to 13ft of swell from the SSE. This is big, powerful stuff. The wind is offshore or cross-offshore, so the faces will be clean. But let’s be real: at 10ft and bigger, even with the offshore wind, this is for experts only. The combined energy is massive (2345-5395). The period is long (11 seconds), which means it’s a proper groundswell.
The standout period is definitely Friday the 11th and Saturday the 12th of September. The swell drops back to a more manageable 6ft to 7ft, still from the SSE, still with a decent period (9-12 seconds). The wind is offshore or cross-off. The combined energy is strong (853-1483). This is the sweet spot for experienced surfers at Ohara. The conditions are excellent, clean, and the wave quality is high. You’ll be sharing the lineup with others, so expect a crowd.
After that, it’s a mixed bag. Sunday the 13th and Monday the 14th get messy again with onshore winds and lumpy cross-chop. Then we get another big blast of energy on Tuesday the 15th and Wednesday the 16th of September, with 10ft to 12ft of swell from the SE. Again, that’s too big for most and is pushing into expert territory. The 14-second period on Tuesday is very long, so the waves will have a lot of power and long wait times between sets. The wind is offshore, which is great, but it’s a real challenge.
Overall, the best bet is the window from the afternoon of September 11th through the 12th. That’s where the stars align for a quality, powerful session without the absolute monster size. The rest of the period is either too small, too windy, or too big for anyone but the hardcore crew.
Rusty
Short Range ForecastHeavy rain (total 133mm), heaviest during Fri afternoon. Warm (max 28°C on Thu afternoon, min 21°C on Fri afternoon). Winds increasing (light winds from the SSE on Wed night, fresh winds from the NE by Fri morning). | Days 5-7 Weather SummaryHeavy rain (total 181mm), heaviest during Sun night. Warm (max 28°C on Mon morning, min 19°C on Sat morning). Winds decreasing (strong winds from the NE on Sun morning, light winds from the NNE by Mon morning). | ||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 11 | ESE 10 | E 10 | E 11 | E 10 | E 10 | E 10 | SE 9 | SE 8 | SSW 9 | ESE 7 | ESE 6 | ESE 7 | E 7 | ESE 7 | E 7 | E 7 | S 12 | SSE 12 |
Wave Graph | |||||||||||||||||||
210 | 146 | 200 | 88 | 98 | 71 | 68 | 95 | 108 | 118 | 105 | 108 | 158 | 315 | 261 | 306 | 311 | 1254 | 1413 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | off | off | off | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-off | on | cross-off | cross-off |
High Tide | 7:23AM1.23m | 6:45PM1.43m | 8:25AM1.12m | 7:09PM1.41m | 10:11AM1.03m | 7:37PM1.37m | 8:16PM1.31m | 4:18PM1.20m | 10:02PM1.24m | 3:36PM1.25m | 00:33AM1.25m | ||||||||
Low Tide | 1:03AM0.32m | 12:45PM0.72m | 1:48AM0.31m | 1:05PM0.86m | 2:46AM0.34m | 1:09PM0.98m | 4:06AM0.36m | 5:51AM0.35m | 5:37PM1.19m | 7:21AM0.28m | 8:09PM1.10m | ||||||||
— | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | |
6:06 | — | 6:05 | — | — | 6:02 | — | — | 6:01 | — | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — | |
mm | — | — | — | 2 | 1 | 3 | 6 | 49 | 72 | 3 | 7 | 26 | 29 | 9 | 29 | 65 | 6 | 7 | 13 |
Temp °C | 25 | 27 | 27 | 26 | 27 | 28 | 26 | 22 | 22 | 21 | 21 | 20 | 21 | 22 | 24 | 26 | 28 | 27 | 28 |
Feels °C | 26 | 30 | 29 | 29 | 31 | 31 | 29 | 22 | 23 | 20 | 17 | 16 | 18 | 19 | 22 | 26 | 29 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | ESE 11 | ESE 10 | E 10 | E 7 | E 10 | E 10 | SSE 6 | SE 9 | SE 8 | ESE 7 | ESE 7 | S 9 | ESE 7 | SSW 10 | ENE 9 | ENE 8 | S 10 | S 12 | SSE 12 |
210 | 146 | 200 | 52 | 98 | 71 | 66 | 95 | 108 | 93 | 70 | 56 | 158 | 10 | 46 | 28 | 221 | 1254 | 1413 | |
Swell 2 Height (m) Direction Period (s) | ENE 7 | E 7 | SSW 8 | E 11 | S 8 | E 6 | E 10 | S 10 | S 10 | SSW 9 | SSW 9 | ESE 9 | ENE 11 | SE 12 | SE 11 | SE 11 | S 15 | E 8 | ENE 8 |
69 | 45 | 23 | 88 | 50 | 19 | 68 | 73 | 70 | 118 | 84 | 25 | 47 | 6 | 5 | 19 | 41 | 227 | 197 | |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SSW 8 | E 13 | S 8 | E 7 | SE 10 | SSW 12 | E 9 | NE 5 | E 9 | E 9 | ENE 11 | SSW 8 | SE 14 | SW 10 | SSW 9 | ESE 11 | SE 10 | SE 10 |
14 | 14 | 52 | 36 | 22 | 24 | 45 | 42 | 12 | 40 | 39 | 13 | 24 | 8 | 4 | 8 | 12 | 27 | 16 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | S 8 | — | NE 5 | — | — | ESE 7 | ESE 6 | — | E 7 | ESE 7 | E 7 | E 7 | — | — |
— | — | — | — | — | 69 | — | 29 | — | — | 105 | 108 | — | 315 | 261 | 306 | 311 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 64 | 0 | 0 | 0 | 0 | 0 | 53 | 58 | 32 | 9 | 638 | 638 | 559 | 623 | 623 | 24 | 6 | 72 | 581 |
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.











