Surf Forecasts:
Ohara surf forecast from 31 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 9PM (local time) - 2.5ft (0.8m), 11s period, ESE swell with offshore winds.
- Most powerful swell: Monday 7 Sep, 3PM (local time) - 10ft (3.0m), 9s period, ENE swell with 1,494 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 12PM (local time) - 2.5ft (0.8m), 10s 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 12PM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.7m 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 3.0m 9s and forecast to arrive on Monday (Sep 07) 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 0.3m 3s period and expected on Thursday (Sep 03) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 2nd Sep) | 2.5ft (0.8m) 10s |
| Best Surf | 9PM (Wed 2nd Sep) | 2.5ft (0.8m) 11s |
| Most Powerful | 3PM (Mon 7th Sep) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s talk about what we’ve got on the horizon. Looking at the whole 16-day window, it’s a pretty rough start with plenty of onshore junk, but there’s a very real pulse of proper swell coming in the second week that will clean up nicely if the wind plays ball.
The first few days are a write-off. Tuesday and Wednesday of this week at Ohara are small, weak, and bumpy with a cross-onshore breeze mucking things up. The swell’s around 3 ft with a period of 10 to 12 seconds, but the energy’s low (combined energy of all swells directed here sits at 314 and then drops to 279). It just doesn’t have any push or shape. Thursday and Friday look even worse – some rain, onshore wind picking up, and the wave heights are tiny or messy. From the 4th through to the 8th of September, it’s a real slog. Winds are howling from the northeast at 18 to 28 mph, the swell jumps up to 7 ft to 10 ft but it’s all wind-affected rubbish with poor surf conditions. The combined energy spikes to over 1500, but it’s not doing you any favours – it’s just big and ugly. That 10 ft on the 7th is onshore and impossible.
Then we get to the 9th of September, and things get interesting. There’s a big groundswell filling in from the SE at 13 ft with a long period of 13 seconds. The combined energy of all swells directed here is a massive 5503. The wind’s cross-shore in the morning, so it’s not perfect, but look – this is serious power. It’s actually too big for this break at that size – 13 ft is expert-only territory, and with that long period, it’ll be pitching and heaving. Not for the faint-hearted. The water temperature is about average for the time of year here. The 10th of September is the real standout. Offshore wind from the south at 15 mph, still that 13 ft SE swell at 12 seconds, and the energy is even higher at 5864. The conditions are clean, glassy-like offshore flow, and this is the best on offer for the whole outlook. This is the day for experienced surfers only to go out and get some memorable ones at Ohara. That SSE direction is right in the optimum window for this spot.
After that peak, the swell slowly backs off but stays solid through the 13th and 14th. By the 13th, it’s 8 ft from the SSE with clean offshore wind and a rating of “excellent surf conditions for experienced surfers” in the afternoon. The energy’s still high at 1544. By the 14th, it’s dropping to 8 ft and then 7 ft, but still clean. For the second week, overall, there’s a good three to four days of solid, clean, offshore wind with a dropping swell. Keep an eye on that 10th and the 13th of September – those are the ones to circle on the calendar.
That’s the read. Stay safe out there.
Short Range ForecastLight rain (total 3mm), mostly falling on Thu morning. Warm (max 28°C on Thu afternoon, min 23°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 159mm), heaviest during Fri night. Warm (max 24°C on Thu night, min 19°C on Fri afternoon). Winds increasing (light winds from the NE on Thu night, strong winds from the NNE by Fri night). | ||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 12 | ESE 12 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | ESE 11 | ESE 10 | E 10 | E 10 | S 10 | S 10 | SE 7 | ENE 6 | ENE 6 | ENE 7 | ENE 8 | ENE 8 | E 9 |
Wave Graph | |||||||||||||||||||
138 | 193 | 173 | 210 | 146 | 111 | 123 | 104 | 71 | 68 | 75 | 67 | 65 | 87 | 107 | 316 | 534 | 636 | 943 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:34AM1.32m | 6:22PM1.43m | 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 | ||||||||
Low Tide | 00:24AM0.36m | 12:21PM0.57m | 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 | ||||||||
— | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | |
6:07 | — | 6:06 | — | — | 6:05 | — | — | 6:02 | — | — | 6:01 | — | — | 6:00 | — | — | 5:59 | — | |
mm | — | — | — | — | — | — | — | 2 | 1 | 8 | 17 | 28 | 86 | 17 | 2 | 1 | — | — | 3 |
Temp °C | 24 | 25 | 25 | 24 | 27 | 27 | 26 | 27 | 28 | 24 | 22 | 20 | 20 | 21 | 22 | 23 | 24 | 24 | 23 |
Feels °C | 24 | 25 | 26 | 25 | 30 | 29 | 30 | 30 | 31 | 24 | 22 | 17 | 15 | 19 | 19 | 20 | 20 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | ESE 11 | ESE 10 | E 10 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 12 | SSE 10 | SSE 10 | SSE 11 |
138 | 193 | 173 | 210 | 146 | 111 | 123 | 104 | 71 | 44 | 75 | 51 | 65 | 44 | 24 | 23 | 69 | 114 | 183 | |
Swell 2 Height (m) Direction Period (s) | E 11 | SSW 8 | SSW 9 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | S 8 | S 8 | E 10 | S 10 | E 9 | S 9 | SSW 9 | SSW 8 | SSW 8 | SSW 9 | E 12 | SSE 11 |
37 | 14 | 15 | 64 | 43 | 37 | 26 | 50 | 51 | 68 | 68 | 57 | 41 | 25 | 24 | 7 | 8 | 12 | 78 | |
Swell 3 Height (m) Direction Period (s) | SSW 9 | ESE 15 | SSE 10 | SSW 8 | SSW 8 | SSW 8 | S 8 | E 6 | SE 6 | SSW 12 | E 9 | S 10 | E 9 | ESE 9 | ESE 9 | ENE 12 | SW 11 | ENE 12 | SSW 10 |
16 | 21 | 10 | 14 | 14 | 23 | 36 | 25 | 23 | 45 | 42 | 67 | 40 | 17 | 26 | 15 | 29 | 14 | 10 | |
Wind waves Height (m) Direction Period (s) | NE 7 | ENE 7 | ENE 7 | NE 7 | — | — | — | — | — | NE 5 | — | NE 5 | NE 3 | ENE 6 | ENE 6 | ENE 7 | ENE 8 | ENE 8 | E 9 |
109 | 86 | 81 | 86 | — | — | — | — | — | 25 | — | 3 | 4 | 87 | 107 | 316 | 534 | 636 | 943 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 64 | 24 | 58 | 6 | 9 | 0 | 0 | 0 | 0 | 58 | 58 | 623 | 623 | 623 | 623 | 301 | 301 | 559 | 301 |
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.











