Surf Forecasts:
Ohara surf forecast from 15 Sep 2026:
- Best quality surf: Sunday 20 Sep, 12AM (local time) - 11ft (3.5m), 11s period, ESE swell with cross-shore winds.
- Most powerful swell: Monday 21 Sep, 6PM (local time) - 26ft (8.0m), 15s period, SSE swell with 28,371 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 12AM (local time) - 11ft (3.5m), 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 Sunday (Sep 20) at 12AM. The primary swell is predicted to be 3.5m and 11s period with a secondary swell of 3.0m and 11s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Ohara in the next 16 days are 8.0m 15s and forecast to arrive on Monday (Sep 21) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 6s period and expected on Monday (Sep 21) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 20th Sep) | 11ft (3.5m) 11s |
| Best Surf | 12AM (Sun 20th Sep) | 11ft (3.5m) 11s |
| Most Powerful | 6PM (Mon 21st Sep) | 26ft (8.0m) 15s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright, let’s break it down.
Starting now, Tuesday afternoon, we’ve got a small but clean one – about 3 feet of east swell with a 14-second period. Offshore wind, clean face. It’s rideable, but don’t expect much.
Wednesday and Thursday are blown out. Cross-onshore winds, chop, and the waves are dropping. From 3 feet down to 2 feet, and it’s ugly.
Then Friday through Monday, the size comes up – and I mean way up. We’re talking 8 feet on Friday, climbing to 12 feet by Friday afternoon, and then holding 8-12 feet through the weekend. Periods are 12-14 seconds, so there’s serious power. But the wind is onshore the whole time, and honestly, 12 feet is just too big for this spot. Monday afternoon might be technically rideable, but it’s strictly for the experts. The energy reading is off the charts – over 16,000 – but that doesn’t matter when you can’t even get out.
Tuesday the 22nd settles things down. Morning is cross-shore chop with 4 feet, but the afternoon is the better call – 3 feet, offshore, clean. Good conditions, but small.
Wednesday the 23rd is a no-go. Gale-force winds at 43 mph, offshore but absolutely howling. You can’t paddle against that. Surf drops to 2 feet and it’s just dangerous.
Thursday and Friday stay small – 2 feet or less – with sloppy conditions. There’s a brief window Friday afternoon with 2 feet and clean cross-off wind, but it’s marginal.
Then we get to the real window: Wednesday the 30th afternoon. We’ve got 4 feet of SSE swell, a 9-second period, light offshore wind, and the surface is clean. Energy is moderate at 581. It’s not a big day, but it’s the cleanest, most fun surf we’ve seen in this entire 16-day run. That’s your pick. Don’t expect to get barreled, but you’ll get some fun ones.
After that, it flatlines – down to 1-2 feet and onshore. Nothing doing.
So, yeah. It’s a slow start, a wild middle, and a clean little finale. If you can wait for the 30th, that’s the day.
Rusty out.
Short Range ForecastHeavy rain (total 36mm), heaviest during Wed morning. Warm (max 24°C on Tue night, min 19°C on Thu morning). Winds increasing (calm on Tue night, strong winds from the NNE by Fri afternoon). | Days 5-7 Weather SummaryHeavy rain (total 185mm), heaviest during Sat night. Warm (max 27°C on Mon morning, min 20°C on Fri night). Winds increasing (light winds from the ENE on Sun morning, near gales from the E by Mon afternoon). | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 13 | E 13 | E 12 | NE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 8 | SE 14 | ESE 13 | ESE 12 | ESE 11 | SE 11 | SE 10 | SSE 13 | SSE 14 | SSE 15 | SE 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 167 | 215 | 148 | 210 | 406 | 504 | 817 | 1106 | 903 | 2271 | 3149 | 2770 | 2912 | 2014 | 2000 | 3861 | 7487 | 24366 | 1595 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | on | cross-on | cross | cross | cross-on | cross-on | cross | cross-off | on |
High Tide | 7:19AM1.20m | 6:15PM1.41m | 8:08AM1.10m | 6:34PM1.38m | 9:23AM1.01m | 6:55PM1.32m | 7:16PM1.25m | 7:40PM1.16m | 3:16PM1.16m | 11:36PM1.11m | |||||||||
Low Tide | 00:47AM0.28m | 12:23PM0.80m | 1:25AM0.33m | 12:37PM0.89m | 2:10AM0.40m | 12:34PM0.96m | 3:12AM0.47m | 4:48AM0.52m | 6:34AM0.49m | 8:04PM1.06m | |||||||||
 |  |  |  | |  |  | | | | | |  |  |  |  | | | | |
 | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — |
 | — | — | 5:45 | — | — | 5:44 | — | — | 5:42 | — | — | 5:40 | — | — | 5:38 | — | — | 5:37 | — |
mm | 12 | 15 | 3 | 4 | 2 | — | — | — | — | — | — | 4 | 98 | 20 | 4 | 16 | 19 | 24 | 77 |
Temp °C | 24 | 22 | 22 | 21 | 19 | 20 | 21 | 21 | 21 | 21 | 22 | 23 | 24 | 25 | 24 | 24 | 27 | 27 | 26 |
Feels °C | 28 | 23 | 21 | 19 | 15 | 15 | 16 | 16 | 16 | 17 | 19 | 20 | 25 | 28 | 24 | 23 | 27 | 23 | 18 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 7 | SE 7 | SE 8 | E 12 | E 11 | SSE 9 | SE 18 | SE 15 | SE 14 | ESE 13 | ESE 12 | SE 11 | SE 11 | SE 10 | SSE 13 | SSE 14 | SSE 15 | SE 11 |
| kJ | 125 | 75 | 64 | 48 | 44 | 41 | 8 | 12 | 273 | 2271 | 3149 | 2770 | 2373 | 2014 | 2000 | 3861 | 7487 | 24366 | 1595 |
Swell 2 Height (m) Direction Period (s) | E 13 | E 13 | E 12 | E 12 | E 15 | SSE 9 | — | SE 12 | SE 11 | ENE 11 | E 10 | E 10 | — | S 13 | E 13 | E 12 | — | — | NE 9 |
| kJ | 167 | 215 | 148 | 71 | 4 | 8 | — | 6 | 5 | 40 | 96 | 161 | — | 176 | 30 | 46 | — | — | 457 |
Swell 3 Height (m) Direction Period (s) | SW 6 | SSW 6 | — | E 16 | SSE 8 | E 14 | — | — | — | — | — | — | — | E 14 | E 13 | E 12 | — | — | E 10 |
| kJ | 26 | 12 | — | 5 | 7 | 14 | — | — | — | — | — | — | — | 16 | 31 | 100 | — | — | 279 |
Wind waves Height (m) Direction Period (s) | NNE 4 | NE 5 | NE 6 | NE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | NE 8 | ENE 8 | ESE 11 | NE 8 | NE 8 | E 9 | E 11 | E 9 | NW 6 |
| kJ | 8 | 35 | 59 | 210 | 406 | 504 | 817 | 1106 | 903 | 531 | 341 | 402 | 2912 | 123 | 104 | 818 | 58 | 3053 | 160 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 6 | 24 | 64 | 30 | 213 | 623 | 542 | 559 | 301 | 542 | 301 | 301 | 206 | 9 | 24 | 78 | 623 | 81 |
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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