Surf Forecasts:
Ohara surf forecast from 20 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 9AM (local time) - 10ft (3.0m), 15s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 3AM (local time) - 13ft (4.0m), 12s period, S swell with 4,125 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 9PM (local time) - 1.5ft (0.4m), 11s period with SE 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 Thursday (Aug 20) at 9PM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.5m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Ohara in the next 16 days are 4.0m 12s and forecast to arrive on Thursday (Aug 27) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Saturday (Aug 22) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 20th Aug) | 1.5ft (0.4m) 11s |
| Best Surf | 9AM (Tue 25th Aug) | 10ft (3.0m) 15s |
| Most Powerful | 3AM (Thu 27th Aug) | 13ft (4.0m) 12s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright, let’s get into it. The next couple of weeks are a real mixed bag at Ohara. We’ve got a long stretch of small, messy surf coming up, but there is one proper window further out that’s got my attention, plus a few other moments where it could be worth a paddle if you pick your times right.
The water temp is sitting at 80°, which is right on the money for this time of year, so we’re not dealing with any weird ocean temperature swings.
For the first few days, we're looking at small and pretty ordinary conditions. Thursday afternoon has ankle to knee-high dribble with a light southerly breeze keeping it clean, but honestly, it’s not worth getting wet for. The energy is weak (77). Friday picks up a touch more push, and the afternoon sees a slightly better SSW wind, but it’s still very average. The weekend is more of the same, with some cross-off winds and a bit more size on Saturday, but the swell direction is all over the place and the quality is just not there. Sunday looks choppy on the morning, then the afternoon cleans up but the swell drops back off again.
There’s then a bit of a lull in the surfable options from Sunday afternoon right through to the early hours of Monday, August 24th. It’s not a total flat spell, but the conditions and the swell don’t line up to make it worthwhile.
Now, this is where it gets interesting. The standout window is Monday, August 24th. The morning is the one to circle. The wind goes glassy, absolutely nothing, and we get a solid 7ft SSE groundswell. The energy is strong (3024). This will be proper surf, the kind you daydream about when it's flat. It’s steep and powerful, so it’s not for the faint-hearted, and the short period on it might make it a bit walled at a beach setup, but for the experienced crew, this is the best on offer by a long shot. The afternoon backs off slightly with a moderate cross-off breeze, but it’s still a solid 8ft. Crowds are possible here, and this is a break that is often inconsistent, so be patient.
Tuesday the 25th and Wednesday the 26th see the swell get even bigger, pushing 10ft and then 12ft. The wind is favorable, offshore, but this is too big for Ohara. It’s expert-only territory, and even then, it looks like a washing machine. We’re talking well overhead and a serious paddle. The energy is strong to very strong (4087 then 3865). Thursday the 27th brings even more size with a strong stormy wind, which isn't going to be anyone's idea of a good time.
After that big run, things settle down but turn messy. The end of August through the first few days of September looks pretty grim, with a lot of onshore NE wind and lumpy, choppy surf. The size drops, but the quality is poor. The energy drops down to a more moderate level, but it’s not doing anyone any favors.
There’s a glimmer on the horizon on Wednesday, September 2nd. The wind goes light and cross-off, and we see a clean 7ft ESE swell. The energy is strong (1421). This could be another decent session, though it’s a long way out, so treat it as promising but not a lock.
After that, we run into the end of the forecast period, where it gets big again (10ft) but the direction swings to the NE and the winds are cross-shore. That looks more like a kite-surfing kind of setup than a paddling one, so I’d give it a miss.
So, to wrap it up: this period is mostly about patience. The one day to really clear your schedule for is the morning of the 24th of August. That’s your standout. Wednesday the 2nd of September could be a bonus, but it's a long way off. For the more experienced amongst you, some of those bigger days late in the month will be a test, but for most of us, it’s a waiting game.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sat morning. Warm (max 28°C on Sat morning, min 24°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Wed morning. Warm (max 28°C on Tue morning, min 24°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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) | SE 11 | SE 11 | S 9 | SSW 8 | E 9 | E 11 | E 11 | E 10 | E 10 | SSE 15 | SSE 14 | SSE 18 | SSE 16 | SSE 15 | SSE 15 | S 15 | S 14 | S 13 | S 12 | S 11 |
Wave Graph | ||||||||||||||||||||
40 | 40 | 40 | 94 | 41 | 151 | 233 | 198 | 113 | 148 | 774 | 2864 | 2968 | 3283 | 3874 | 3665 | 2651 | 1568 | 1122 | 3191 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | cross-off | cross-off | cross-off | on | cross-on | cross | cross-on | glassy | cross-off | cross-off | cross-off | off | cross-off | off | off | off |
High Tide | 7:57PM1.33m | 8:25PM1.27m | 9:20PM1.21m | 4:18PM1.16m | 11:48PM1.19m | 4:09PM1.21m | 1:23AM1.23m | 4:19PM1.25m | 2:22AM1.30m | 4:34PM1.29m | ||||||||||
Low Tide | 4:11AM0.49m | 5:46AM0.49m | 7:17AM0.44m | 7:38PM1.13m | 8:17AM0.36m | 8:41PM1.05m | 8:59AM0.28m | 9:15PM0.96m | 9:34AM0.22m | 9:45PM0.85m | ||||||||||
— | — | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | |
6:22 | — | — | 6:21 | — | — | 6:19 | — | — | 6:17 | — | — | 6:16 | — | — | 6:15 | — | — | 6:14 | — | |
mm | — | — | — | — | — | 1 | — | 3 | 2 | — | — | 1 | — | — | — | — | 3 | 5 | 11 | 34 |
Temp °C | 27 | 26 | 27 | 27 | 26 | 28 | 27 | 26 | 25 | 26 | 25 | 27 | 27 | 26 | 28 | 28 | 27 | 24 | 24 | 26 |
Feels °C | 29 | 28 | 29 | 28 | 27 | 29 | 28 | 29 | 27 | 29 | 29 | 29 | 28 | 28 | 31 | 30 | 29 | 27 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 9 | E 11 | E 11 | E 10 | E 10 | E 9 | SSE 14 | SSE 18 | SSE 16 | SSE 15 | SSE 15 | S 15 | S 14 | S 13 | S 12 | E 15 |
21 | 32 | 34 | 35 | 41 | 151 | 233 | 198 | 113 | 81 | 774 | 2864 | 2968 | 3283 | 3874 | 3665 | 2651 | 1568 | 1122 | 110 | |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 11 | S 9 | SE 10 | S 9 | SSW 9 | SSW 9 | S 5 | SSE 5 | SSE 15 | E 9 | ESE 12 | ESE 12 | E 14 | ESE 14 | ESE 13 | ESE 13 | E 12 | E 12 | ESE 12 |
40 | 40 | 39 | 39 | 38 | 28 | 27 | 11 | 7 | 148 | 80 | 142 | 199 | 206 | 195 | 184 | 176 | 112 | 104 | 46 | |
Swell 3 Height (m) Direction Period (s) | SSW 9 | SSW 8 | SE 11 | ESE 5 | SE 10 | SE 10 | SE 10 | SSW 9 | SSW 9 | ESE 12 | ESE 12 | SW 8 | S 22 | E 15 | SW 11 | SW 10 | E 19 | ESE 18 | E 16 | SE 16 |
16 | 13 | 40 | 2 | 36 | 25 | 28 | 26 | 15 | 56 | 49 | 18 | 236 | 68 | 18 | 16 | 30 | 61 | 81 | 10 | |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 5 | SSW 3 | SSW 8 | S 4 | S 5 | S 5 | — | NE 3 | — | SSW 4 | — | S 8 | SW 10 | SSE 5 | — | — | — | — | S 11 |
10 | 6 | 2 | 94 | 17 | 29 | 24 | — | 1 | — | 11 | — | 37 | 46 | 17 | — | — | — | — | 3191 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 8 | 0 | 149 | 9 | 15 | 6 | 9 | 58 | 9 | 0 | 8 | 8 | 9 | 563 | 92 | 0 | 0 | 638 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.











