
Surf Forecasts:
Osaki Point surf forecast from 5 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 6PM (local time) - 18ft (5.5m), 16s period, ESE swell with onshore winds.
- Most powerful swell: Wednesday 5 Aug, 6PM (local time) - 18ft (5.5m), 16s period, ESE swell with 15,062 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 6PM (local time) - 18ft (5.5m), 16s period with ESE swell.
Best Forecast Surf Conditions for Osaki Point this week:
The surf forecast for Osaki Point over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 05) at 6PM. The primary swell is predicted to be 5.5m and 16s period with a secondary swell of 5.0m and 16s. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Osaki Point in the next 16 days are 5.5m 16s and forecast to arrive on Wednesday (Aug 05) at 6PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Wed 5th Aug) | 18ft (5.5m) 16s |
| Best Surf | 6PM (Wed 5th Aug) | 18ft (5.5m) 16s |
| Most Powerful | 6PM (Wed 5th Aug) | 18ft (5.5m) 16s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Right, let’s have a look at what’s cookin’ for Osaki Point over the next couple of weeks. Gotta be straight with ya – it’s a bit of a mixed bag, and the early part of the outlook is pretty much a write-off unless you’re after a washing machine.
We’ve got a massive pulse of swell rolling in right from the start of August, but the wind is just wrecking it. Wednesday morning the 5th sees a 16 ft ESE swell with a very long 16-second period, so there’s a ton of energy in the water (combined energy of 11654), but that ENE wind is blowing straight onshore at 9 mph. The water’s a touch warmer than normal at 85°, which is nice for the body, but the surf is just a mess. It’s too big for beginners anyway, and the conditions are marginal. Wednesday afternoon is even bigger at 18 ft from the ESE with even more energy (27216), but the wind goes cross-on from the east at 12 mph. The models say the conditions would be favourable if it weren't so big, but at this size, it’s really only for the brave and the very experienced. Honestly, Thursday through to the following Monday, it’s all big swell but with strong onshore winds, rain and thunderstorms. It’s a no-go zone. There are a few days of poor surf conditions where the energy is still up there (hitting over 10,000 again on Thursday afternoon), but it’s just not clean.
Things start to settle down around Tuesday the 11th. The swell drops to 7 ft from the SSW, with a 12-second period. The energy is still moderate (1917), but the wind is a near-calm 3 mph from the ENE in the morning. It’s still only marginal, but it’s a step in the right direction.
Now, the standout window. Wednesday the 12th into Friday the 14th is where we get the cleanest conditions of the whole run. On Wednesday morning, the 12th, we’ve got a 6 ft SSW swell with an 11-second period. The wind goes glassy – dead calm from the west. The combined energy is weak (954), but with that glassy surface, it’s going to be really clean. The swell is a bit small for the size of Osaki, but if you’re on a log or a fish, it’ll be a fun, peaceful session. The afternoon stays clean with a light cross-offshore. Thursday the 13th is similar – 5 ft SSW swell, glassy calm in the morning, and a clean cross-off in the afternoon. Friday the 14th looks even smaller at 4 ft, but again, glassy conditions all day, which is a rare treat. This is the pick of the bunch for a relaxing surf.
After that, Saturday the 15th afternoon has a bit more push, with a 6 ft easterly swell, but the period drops to a short 7 seconds, so it’ll be a bit fat and crumbly. The wind is cross-off, so it’ll be clean, but the energy is low (504).
Then from Sunday the 16th onward, it’s back to poor conditions with onshore winds and a drop in swell size, so we’re really just looking at that mid-week window around the 12th to the 14th as the only real chance for a good, clean wave. If you can wait for that Wednesday and Thursday, you’ll be rewarded with glassy conditions and a clean, manageable swell. Don’t bother with the first week unless you’re a masochist or a tow-in specialist.
Rusty out.
Short Range ForecastHeavy rain (total 39mm), heaviest during Fri afternoon. Warm (max 30°C on Wed afternoon, min 27°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Sun night. Warm (max 29°C on Sat morning, min 26°C on Sat night). Winds decreasing (fresh winds from the E on Sat morning, light winds from the ENE by Mon night). | ||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | |||||||||||||||
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 16 | ESE 16 | SE 15 | SE 14 | SE 14 | SE 15 | SSE 14 | SSE 14 | SSE 14 | SSW 14 | SSW 14 | S 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 |
Wave Graph | |||||||||||||||||||||
11654 | 14702 | 10145 | 9595 | 12223 | 11243 | 10529 | 8085 | 7411 | 3663 | 3627 | 4700 | 4237 | 2483 | 2026 | 1905 | 2026 | 1730 | 1354 | 1036 | 861 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | on | on | on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | on | on | cross-on | on | cross-on | glassy |
High Tide | 10:00AM1.46m | 9:53PM1.64m | 11:18AM1.35m | 10:36PM1.58m | 1:19PM1.32m | 11:39PM1.53m | 3:22PM1.41m | 1:12AM1.52m | 4:30PM1.55m | 2:43AM1.58m | 5:14PM1.67m | 3:53AM1.69m | 5:51PM1.76m | ||||||||
Low Tide | 3:40PM0.78m | 4:45AM0.52m | 4:27PM0.97m | 6:01AM0.50m | 5:44PM1.14m | 7:34AM0.44m | 7:56PM1.21m | 8:58AM0.31m | 9:36PM1.16m | 10:03AM0.17m | 10:34PM1.05m | 10:55AM0.05m | 11:19PM0.92m | ||||||||
5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | |
— | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | |
mm | — | — | — | — | 4 | 9 | 5 | 6 | 15 | 2 | — | 8 | 3 | 4 | 6 | 1 | — | — | — | — | — |
Temp °C | 29 | 30 | 27 | 30 | 29 | 27 | 28 | 28 | 27 | 29 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 26 | 28 | 29 | 27 |
Feels °C | 30 | 32 | 28 | 30 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | ESE 16 | ESE 16 | SE 15 | SE 14 | SE 14 | SE 15 | SSE 14 | SSE 14 | SSE 14 | SSW 14 | SSW 14 | S 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 |
11654 | 12514 | 10145 | 9595 | 11296 | 11243 | 10529 | 8085 | 7411 | 3663 | 3627 | 4700 | 4237 | 2483 | 2026 | 1905 | 2026 | 1730 | 1354 | 1036 | 861 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | E 16 | E 15 | E 15 | E 15 | E 15 | — | E 13 | E 13 | E 14 | E 13 | E 12 | ESE 6 | E 12 | E 12 | E 12 |
— | — | — | — | — | — | 20 | 18 | 17 | 4 | 17 | — | 490 | 591 | 653 | 485 | 371 | 107 | 556 | 596 | 380 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | S 12 | SE 12 | SE 14 | SE 14 | E 12 | SE 13 | SE 13 | SE 13 |
— | — | — | — | — | — | — | — | — | — | — | — | — | 233 | 6 | 33 | 33 | 229 | 7 | 7 | 7 | |
Wind waves Height (m) Direction Period (s) | — | ESE 16 | — | — | SE 14 | — | — | E 10 | SE 10 | ESE 10 | ESE 9 | ESE 9 | E 6 | ESE 8 | ESE 7 | ESE 6 | ESE 6 | — | — | — | — |
— | 14702 | — | — | 12223 | — | — | 443 | 1652 | 1310 | 950 | 589 | 108 | 408 | 330 | 271 | 192 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 534 | 22 | 51 | 483 | 42 | 497 | 483 | 483 | 497 | 497 | 42 | 483 | 483 | 528 | 392 | 1535 | 16 | 16 | 22 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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Information about the Osaki Point Surf forecast
The above surf forecast table for Osaki Point provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Osaki Point can be found by selecting the local surf guide option on the grey menu. Our Osaki Point 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 (Osaki Point) 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 Osaki Point 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.
Osaki Point is 14 km (9 miles) from Muroto. If you plan a holiday in Shikoku, look for hotels and other accommodation in Muroto. Muroto has rooms for a wide range of budgets as well as car hire and transport links.











