Surf Forecasts:
Ohara surf forecast from 15 Aug 2026:
- Best quality surf: Monday 17 Aug, 9AM (local time) - 3.5ft (1.1m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 9PM (local time) - 5ft (1.5m), 10s period, ESE swell with 391 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 9AM (local time) - 3.5ft (1.1m), 9s period with E 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 Monday (Aug 17) at 9AM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 0.4m and 8s. 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 1.5m 10s and forecast to arrive on Saturday (Aug 15) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 6s period and expected on Saturday (Aug 22) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Mon 17th Aug) | 3.5ft (1.1m) 9s |
| Best Surf | 9AM (Mon 17th Aug) | 3.5ft (1.1m) 9s |
| Most Powerful | 9PM (Sat 15th Aug) | 5ft (1.5m) 10s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright folks, let’s get the lowdown on what’s coming. It’s a tale of two halves: a sleepy start and a bang-up finish if you’ve got the guts to wait.
We’re sizing up Ohara. The water here is about 80°F, which is dead average for the season, nothing to write home about.
From Saturday the 15th right through to Tuesday the 19th, it’s pretty poor. We’re looking at weak, disorganised surf in the 3ft to 5ft range, but the wind is mostly side or onshore, leaving the surface messy. The energy is in the moderate range, spending most of its time under 600, and the periods are short, under 10 seconds. It’s a solid four-day gap where you’ve got no real reason to paddle out.
Things perk up a bit from Thursday the 20th. The wind turns cleaner, offering a cross-offshore breeze, and the swell stays around 3ft to 4ft from the ESE. The energy sits in the 220 to 230 range, and while it’s not pumping, it’s surfable and far more pleasant. Crowds are a possibility, but it’s worth it for the clean lines.
Now, for the heavy hitters. Around Monday the 24th and Tuesday the 25th, the ocean is going to roar. We’re talking a solid 8ft to 11ft+ swell from the SSE with a long period of 15 to 17 seconds. The wave energy shoots into the thousands (4540 to 5145). But, and it’s a big but, a strong onshore wind from the NE is going to tear it up, making it choppy and nasty. This is expert territory only, and honestly, with that much wind and size, you’d be better off rigging a kite than paddling a board.
The absolute best of the bunch, the one that’s worth the wait, is the final weekend. Saturday the 29th and Sunday the 30th. We’ve got a beautiful 4ft to 5ft groundswell from the ESE, with a very long period of 13 to 16 seconds. The energy is strong, hitting 726 and then a massive 1238 on Sunday. The wind is forecast to be glassy or light offshore, especially on Sunday morning. It’ll be clean, powerful, and perfect. This is the session to dream about.
First week is a write-off. The middle is big but blown out. The last weekend is where the magic happens.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun night. Warm (max 27°C on Sat morning, min 24°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
AM | 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) | ESE 10 | ESE 9 | ESE 9 | E 10 | E 8 | E 9 | E 9 | E 8 | E 8 | E 8 | ESE 8 | ESE 7 | E 7 | E 7 | E 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 435 | 367 | 308 | 356 | 200 | 230 | 186 | 144 | 144 | 134 | 101 | 99 | 106 | 88 | 89 | 146 | 187 | 237 | 155 | 121 | 130 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 6:15PM1.39m | 6:04AM1.38m | 6:35PM1.39m | 6:49AM1.29m | 6:55PM1.40m | 7:36AM1.17m | 7:14PM1.39m | 8:31AM1.06m | 7:35PM1.36m | 9:55AM0.97m | 7:57PM1.33m | 8:25PM1.27m | |||||||||
Low Tide | 11:52AM0.24m | 00:09AM0.53m | 12:20PM0.38m | 00:47AM0.46m | 12:44PM0.53m | 1:27AM0.43m | 1:05PM0.67m | 2:11AM0.43m | 1:20PM0.80m | 3:02AM0.46m | 1:21PM0.90m | 4:11AM0.49m | |||||||||
 | |  | |  |  | | | | | | | | |  | | | | | | | |
 | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — |
 | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — | — | 6:21 | — |
mm | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 27 | 26 | 25 | 26 | 26 | 25 | 27 | 26 | 25 | 27 | 27 | 25 | 26 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 26 |
Feels °C | 28 | 27 | 27 | 26 | 27 | 27 | 29 | 28 | 27 | 29 | 29 | 28 | 28 | 29 | 28 | 29 | 29 | 27 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 9 | ESE 9 | E 9 | S 9 | E 9 | E 9 | E 8 | E 8 | E 8 | ESE 8 | ESE 7 | E 7 | E 9 | E 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 |
| kJ | 435 | 367 | 308 | 217 | 23 | 230 | 186 | 144 | 144 | 134 | 101 | 99 | 106 | 24 | 89 | 146 | 187 | 237 | 155 | 121 | 89 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | S 10 | S 9 | ESE 9 | ESE 9 | S 9 | SSW 8 | SE 11 | SE 10 | SE 10 | SE 10 | E 9 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | S 8 | SE 9 | S 8 | S 10 |
| kJ | 45 | 53 | 42 | 32 | 35 | 23 | 24 | 30 | 27 | 37 | 27 | 56 | 35 | 35 | 36 | 43 | 19 | 22 | 43 | 32 | 130 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | SSE 8 | SE 10 | SSW 9 | SE 11 | SE 11 | SE 11 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SE 10 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | S 9 | S 13 | S 8 | SE 10 | SE 10 |
| kJ | 40 | 14 | 27 | 27 | 32 | 31 | 30 | 23 | 13 | 6 | 6 | 27 | 10 | 9 | 8 | 4 | 15 | 3 | 32 | 37 | 33 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 10 | E 8 | — | — | — | — | E 8 | E 7 | — | — | E 7 | — | — | — | — | — | — | — |
| kJ | — | — | — | 356 | 200 | — | — | — | — | 113 | 36 | — | — | 88 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 72 | 111 | 9 | 58 | 111 | 58 | 0 | 0 | 64 | 9 | 58 | 9 | 64 | 58 | 9 | 64 | 0 | 0 | 0 | 0 | 0 |
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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