Surf Forecasts:
Ohara surf forecast from 29 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 12PM (local time) - 2.5ft (0.8m), 10s period, ESE swell with cross-offshore winds.
- Most powerful swell: Saturday 5 Sep, 9PM (local time) - 6ft (1.8m), 7s period, E swell with 302 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 0.9m 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 1.8m 7s and forecast to arrive on Saturday (Sep 05) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Thursday (Sep 03) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 2nd Sep) | 2.5ft (0.8m) 10s |
| Best Surf | 12PM (Wed 2nd Sep) | 2.5ft (0.8m) 10s |
| Most Powerful | 9PM (Sat 5th Sep) | 6ft (1.8m) 7s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the table for the next couple of weeks.
Right off the bat, it's a pretty slow start. We're looking at a stretch of pretty ordinary conditions through the end of August and into the first few days of September. The first real chance of anything surfable doesn't show up until Wednesday, September 2nd, in the afternoon. The wind swings offshore from the SSE, cleaning things up, but the swell is weak – just 2ft from the ESE with a period of 10 seconds and combined energy of 184 (weak). It's surfable, but nothing to write home about.
Thursday the 3rd offers a couple of clean windows with cross-offshore winds, but the swell is mixed. The morning has a small 2ft easterly swell (141 energy), and the afternoon sees a bump to 4ft from the SSE, but that's a short-period 6-second swell (205 energy), so it'll be a bit lumpy and weak. Honestly, it's a tough call to get excited about.
From Friday the 4th through the first part of the following week, the wind turns onshore and the surf gets messy. The swell does start to build, but it's all short-period windswell, and the onshore winds are going to chop it up. By the 6th and 7th, we're seeing some solid swell energy – 7ft on the 6th afternoon (966 energy) and 8-8ft on the 7th (1050 to 2497 energy) – but the wind is still cross-onshore, keeping it pretty rough.
Now, here's the real standout, and it's a big one. Tuesday, September 8th, through Wednesday, September 9th, is shaping up to be the best window of the whole forecast. The swell is pumping – 10ft to 12ft from the ESE and SE, with periods hitting 12 to 13 seconds (groundswell). The combined energy is massive, between 3173 and 3576 (strong to very strong). The wind is light and offshore or light cross-shore, making for clean conditions. At Ohara, with that much swell and a long period, expect powerful, well-shaped waves. The flip side is that this is serious size – over 8ft, so this is expert territory only. It'll be big, clean, and powerful. If you're a confident surfer, this is the time to be in the water.
After that, it all goes to hell. From Thursday, September 10th, onward, the wind cranks up from the NNE, hitting 22 to 34 mph, and the swell is still big but completely blown out. The energy readings are still high (over 10,000 on the 10th morning), but it's a mess of cross-onshore and onshore winds. It's going to be lumpy, messy, and borderline dangerous for paddle surfing. Honestly, with that much swell and strong wind, it's looking more like a kite-surfing setup than a clean surf day.
Water temperature at Ohara is 82°F, which is a touch warmer than normal for this time of year – about 2°F above average, so you'll be comfortable in a shorty or boardies.
So, to sum it up: the first week is mostly a write-off. The real standout is Tuesday, September 8th, and Wednesday, September 9th, with big, clean groundswell at Ohara, but it's only for the experts. After that, the wind kills it.
Rusty out.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon morning. Warm (max 26°C on Tue morning, min 21°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Thu night. Warm (max 28°C on Wed morning, min 23°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 11 | E 11 | E 11 | E 11 | E 11 | E 11 | ESE 14 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 10 | ESE 7 | SE 6 | E 11 | SSE 6 | SSE 7 | E 9 | ENE 5 | E 6 |
Wave Graph | ||||||||||||||||||||
60 | 58 | 59 | 60 | 56 | 56 | 73 | 175 | 237 | 176 | 167 | 116 | 86 | 93 | 112 | 94 | 76 | 64 | 64 | 99 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | on | on | on | cross | cross-on | cross-on | cross-on | cross | cross-on | cross-on | off | off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:24PM1.39m | 5:09AM1.42m | 5:43PM1.41m | 5:50AM1.39m | 6:02PM1.43m | 6:34AM1.32m | 6:22PM1.43m | 7:23AM1.23m | 6:45PM1.43m | 8:25AM1.12m | 7:09PM1.41m | 10:11AM1.03m | 7:37PM1.37m | |||||||
Low Tide | 11:16PM0.53m | 11:29AM0.32m | 11:48PM0.43m | 11:56AM0.44m | 00:24AM0.36m | 12:21PM0.57m | 1:03AM0.32m | 12:45PM0.72m | 1:48AM0.31m | 1:05PM0.86m | 2:46AM0.34m | 1:09PM0.98m | ||||||||
— | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | |
6:09 | — | — | 6:08 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — | — | 6:02 | — | — | 6:01 | — | |
mm | 2 | 1 | — | — | 2 | 5 | 1 | — | — | — | 1 | — | — | 3 | 1 | — | 5 | 2 | 2 | 21 |
Temp °C | 25 | 23 | 24 | 25 | 24 | 25 | 25 | 25 | 26 | 27 | 26 | 28 | 28 | 27 | 27 | 26 | 26 | 24 | 24 | 23 |
Feels °C | 27 | 23 | 25 | 27 | 27 | 28 | 27 | 29 | 29 | 30 | 30 | 32 | 31 | 31 | 28 | 29 | 28 | 27 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | E 11 | ENE 5 | ENE 5 | E 5 | E 5 | E 11 | ESE 14 | ESE 12 | ESE 12 | ESE 11 | E 7 | ESE 7 | ESE 7 | SE 6 | E 11 | E 10 | SSE 7 | SE 7 | SSE 6 | E 9 |
60 | 23 | 28 | 27 | 28 | 56 | 73 | 175 | 237 | 176 | 94 | 77 | 85 | 93 | 112 | 73 | 76 | 44 | 28 | 27 | |
Swell 2 Height (m) Direction Period (s) | S 8 | SSW 6 | E 11 | E 11 | E 11 | NE 7 | E 11 | E 11 | E 6 | E 6 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | SSW 8 | SE 10 | E 10 | E 9 | E 9 | S 8 |
18 | 23 | 59 | 60 | 56 | 16 | 56 | 36 | 54 | 54 | 167 | 116 | 86 | 54 | 14 | 24 | 71 | 64 | 45 | 23 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | E 11 | SSW 7 | SSW 7 | SSW 7 | SE 9 | SE 9 | SSW 9 | SSW 8 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | E 12 | SE 10 | SSW 8 | SE 10 | SE 9 | SSW 10 | SE 9 |
30 | 58 | 20 | 20 | 18 | 23 | 22 | 16 | 24 | 25 | 14 | 14 | 13 | 47 | 15 | 14 | 14 | 13 | 18 | 21 | |
Wind waves Height (m) Direction Period (s) | ENE 5 | — | — | — | — | E 5 | ENE 6 | ENE 7 | — | — | — | — | — | — | SSE 6 | SSE 6 | — | NE 5 | ENE 5 | E 6 |
37 | — | — | — | — | 26 | 53 | 64 | — | — | — | — | — | — | 61 | 94 | — | 39 | 64 | 99 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 24 | 9 | 9 | 6 | 6 | 213 | 64 | 9 | 6 | 8 | 9 | 9 | 0 | 0 | 559 | 143 | 6 | 6 | 58 | 213 |
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.











