Surf Forecasts:
Ohara surf forecast from 10 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 3AM (local time) - 4ft (1.2m), 10s period, E swell with offshore winds.
- Most powerful swell: Tuesday 11 Aug, 6PM (local time) - 8ft (2.4m), 12s period, ENE swell with 1,590 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 3AM (local time) - 4ft (1.2m), 10s 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 Wednesday (Aug 12) at 3AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.5m and 10s. Another secondary swell of 1.7m and 6s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Ohara in the next 16 days are 2.4m 12s and forecast to arrive on Tuesday (Aug 11) 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 1.6m 5s period and expected on Tuesday (Aug 11) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 12th Aug) | 4ft (1.2m) 10s |
| Best Surf | 3AM (Wed 12th Aug) | 4ft (1.2m) 10s |
| Most Powerful | 6PM (Tue 11th Aug) | 8ft (2.4m) 12s |
Table - best surf conditions forecast for Ohara over the next 16 days.
The Lowdown
Alright, let’s talk in feet and miles per hour. This is Rusty, and for Ohara, the start of the outlook is a dead zone, so don’t rush.
The first usable surf doesn’t roll in until Tuesday, August 18th. From Monday the 10th all the way through the 17th, it’s a mess. Monday the 10th has a 8ft east swell, but a strong 22 mph cross-onshore wind has it lumpy and blown out. The energy is high (1631), but it’s useless. The same pattern repeats: big swell, 7ft to 8ft, with onshore winds up to 25 mph, making every session a no-go. Tuesday the 11th through Sunday the 16th are all poor.
On Tuesday the 18th, things finally come together. The morning shows a 4ft swell from the east-northeast, period 9 seconds, with a light 6 mph cross-offshore wind from the southwest. It’s clean. The energy is moderate (237). By the afternoon, the wind shifts to a true offshore from the south-southwest at 12 mph, and the swell holds at 3ft from the east. That’s your best window – clean, not too crowded, and fun. This is the standout.
Wednesday the 19th and Thursday the 20th still have small, clean waves. The swell drops to around 3ft, wind is light offshore or cross-offshore. It’s glassy in the mornings. Water temp is 81°F, about average for the season.
Friday the 21st is flat and weak. Saturday the 22nd sees a slight bump to 3ft from the east-southeast, with light cross-offshore wind. The energy is moderate (210). Sunday the 23rd and Monday the 24th have small, clean conditions. Monday afternoon even shows a period jump to 13 seconds, giving a bit of groundswell feel, but the swell is only 2ft.
Tuesday the 25th finishes the run with small, clean surf at 3ft to 3ft from the south-southeast and southeast, light winds, and clean conditions. The energy is moderate (250).
Best bet: Tuesday the 18th. Everything before that is a bust.
Rusty.
Short Range ForecastHeavy rain (total 86mm), heaviest during Tue night. Warm (max 27°C on Thu morning, min 19°C on Tue night). Winds decreasing (fresh winds from the SSW on Tue afternoon, light winds from the N by Wed night). | Days 5-7 Weather SummaryHeavy rain (total 43mm), heaviest during Sun morning. Warm (max 27°C on Fri morning, min 20°C on Sun morning). Mainly fresh winds. | ||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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) | ENE 10 | E 10 | E 12 | E 11 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 9 | E 10 | ESE 10 | ESE 10 | E 10 | E 10 | E 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 1023 | 969 | 1277 | 466 | 249 | 205 | 274 | 375 | 443 | 484 | 426 | 369 | 340 | 509 | 710 | 563 | 524 | 745 | 449 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | off | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross-off |
High Tide | 1:39AM1.38m | 4:49PM1.34m | 2:45AM1.44m | 5:12PM1.36m | 3:41AM1.48m | 5:34PM1.37m | 4:31AM1.49m | 5:55PM1.38m | 5:18AM1.46m | 6:15PM1.39m | 6:04AM1.38m | 6:35PM1.39m | |||||||
Low Tide | 9:24AM0.04m | 9:36PM1.00m | 10:08AM0.01m | 10:16PM0.88m | 10:46AM0.04m | 10:53PM0.75m | 11:21AM0.12m | 11:31PM0.63m | 11:52AM0.24m | 00:09AM0.53m | 12:20PM0.38m | 00:47AM0.46m | |||||||
 |  |  |  |  |  | | |  |  | | | | |  |  | | | | |
 | — | 4:54 | — | — | 4:54 | — | — | 4:54 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — |
 | 6:32 | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — |
mm | — | — | 25 | 54 | 3 | 2 | — | 2 | — | 1 | 1 | 2 | 8 | 5 | — | — | 13 | 13 | 13 |
Temp °C | 23 | 25 | 23 | 22 | 25 | 26 | 24 | 27 | 27 | 25 | 27 | 27 | 26 | 26 | 26 | 24 | 21 | 24 | 26 |
Feels °C | 20 | 24 | 21 | 19 | 26 | 28 | 26 | 28 | 28 | 27 | 28 | 28 | 28 | 25 | 23 | 22 | 20 | 24 | 27 |
Swell 1 Height (m) Direction Period (s) | S 10 | E 10 | E 12 | E 11 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 9 | E 10 | SSW 11 | ESE 10 | S 11 | E 10 | E 9 |
| kJ | 55 | 969 | 1277 | 466 | 249 | 205 | 274 | 375 | 443 | 484 | 426 | 369 | 340 | 509 | 40 | 563 | 81 | 593 | 449 |
Swell 2 Height (m) Direction Period (s) | SW 11 | S 10 | SE 13 | E 11 | S 10 | S 6 | S 6 | S 10 | S 10 | S 9 | SSW 9 | SSE 11 | SE 10 | SSE 8 | SE 12 | SSW 8 | SE 12 | S 10 | SSW 9 |
| kJ | 59 | 55 | 27 | 287 | 53 | 29 | 19 | 50 | 48 | 43 | 28 | 47 | 120 | 23 | 6 | 24 | 36 | 50 | 28 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SSW 11 | — | SSW 10 | SE 13 | E 5 | S 10 | — | SE 12 | SSE 12 | SSE 11 | SSW 9 | SSW 9 | SSW 9 | SE 18 | S 12 | SE 17 | SE 11 | SE 12 |
| kJ | 4 | 91 | — | 58 | 6 | 22 | 51 | — | 6 | 28 | 47 | 28 | 16 | 15 | 13 | 47 | 12 | 33 | 34 |
Wind waves Height (m) Direction Period (s) | ENE 10 | NW 4 | SW 3 | S 6 | SSE 6 | — | — | — | — | — | — | — | — | — | ESE 10 | — | E 10 | E 10 | — |
| kJ | 1023 | 7 | 41 | 308 | 116 | — | — | — | — | — | — | — | — | — | 710 | — | 524 | 745 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 58 | 6 | 206 | 213 | 58 | 9 | 6 | 9 | 58 | 6 | 114 | 58 | 9 | 58 | 85 | 58 | 6 | 9 | 62 |
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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