Surf Forecasts:
Osaki Point surf forecast from 2 Sep 2026:
- Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 18ft (5.5m), 12s period, SE swell with 8,595 kJ wave energy.
Best Forecast Surf Conditions for Osaki Point this week:
The most powerful waves expected at Osaki Point in the next 16 days are 5.5m 12s and forecast to arrive on Wednesday (Sep 09) at 9AM. 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+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Wed 9th Sep) | 18ft (5.5m) 12s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright folks, it’s Rusty here. Let’s have a look at what Osaki Point has got cooking for us over the next couple of weeks.
Right off the bat, I gotta be straight with you – the first week is mostly a write-off. There’s some swell around, but the wind and conditions are just ugly. It’s not until Wednesday the 9th that we finally see something worth paddling out for, so expect a solid gap of quiet boards for nearly a week.
That Wednesday the 9th is the real standout. We’re looking at a big, solid groundswell from the SE. It’s pumping in at 18ft on a long 12-second period. The combined energy is massive (8595), meaning there’s a ton of power in the water. The wind is light onshore, so it will be rideable, but this is serious stuff. Over 8ft, this is strictly for experts only. The water’s a touch warmer than normal for the time of year at 84°F.
After that, the swell drops but conditions get pretty dicey again with stronger winds and rain. There’s another window opening up on the morning of Thursday the 17th. That morning, it goes glassy with a light NE breeze. The swell is still solid at 16ft from the S with a short 9-second period. The energy is very high (4403). This is again heavy stuff, best left for the experienced crew. In the afternoon, the wind drops to dead calm, glassy, and the swell eases to a still-chunky 8ft from the SSE. That afternoon session looks like a classic, clean, powerful wave for those who can handle it.
Saturday the 12th offers a brief moment of tiny, clean conditions with a little 4ft SE swell and glassy wind, but it’s small and inconsistent. A fun little surf for a longboard or a fish, but nothing compared to the big days.
So to wrap it up: park the board for the first week. Circle Wednesday the 9th and the morning of Thursday the 17th on your calendar for the big, expert-only groundswell. The afternoon of the 17th looks like the pick of the whole run for a powerful, clean session.
Stay safe out there.
Rusty.
Short Range ForecastHeavy rain (total 172mm), heaviest during Fri afternoon. Warm (max 29°C on Wed morning, min 21°C on Fri night). Winds increasing (light winds from the E on Wed night, fresh winds from the NE by Fri morning). | Days 4-6 Weather SummaryHeavy rain (total 258mm), heaviest during Mon night. Warm (max 28°C on Sat morning, min 24°C on Sat night). Mainly strong winds. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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) | SSE 9 | SSE 9 | SSE 8 | S 8 | SSE 10 | S 10 | S 9 | S 9 | E 7 | E 8 | ESE 8 | E 8 | E 8 | E 9 | E 9 | ENE 7 | E 7 | SE 7 | SSE 11 | SSE 10 | SE 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 222 | 243 | 151 | 140 | 349 | 627 | 541 | 395 | 478 | 466 | 521 | 609 | 916 | 1494 | 600 | 203 | 179 | 211 | 730 | 884 | 6234 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | cross |
High Tide | 8:31PM1.72m | 9:51AM1.47m | 9:03PM1.65m | 11:17AM1.34m | 9:44PM1.55m | 1:51PM1.33m | 11:02PM1.45m | 3:35PM1.46m | 1:18AM1.44m | 4:20PM1.58m | 2:55AM1.54m | 4:53PM1.68m | |||||||||
Low Tide | 2:33PM0.75m | 3:16AM0.36m | 3:07PM0.93m | 4:14AM0.42m | 3:51PM1.11m | 5:38AM0.48m | 5:36PM1.26m | 7:29AM0.46m | 8:35PM1.23m | 8:56AM0.35m | 9:46PM1.08m | 9:56AM0.24m | 10:29PM0.91m | ||||||||
 |  |  |  |  | |  | |  |  |  |  | | | | | | | | |  | |
 | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — |
 | — | 6:28 | — | — | 6:27 | — | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — |
mm | 1 | — | 12 | 4 | 8 | 29 | 22 | 53 | 43 | — | — | 1 | 2 | 4 | 37 | 28 | 71 | 115 | 76 | 47 | 14 |
Temp °C | 29 | 29 | 27 | 25 | 24 | 24 | 24 | 22 | 22 | 28 | 28 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 27 |
Feels °C | 32 | 32 | 31 | 28 | 25 | 25 | 24 | 20 | 21 | 25 | 26 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 26 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SSE 8 | S 8 | SSE 10 | S 10 | S 9 | S 9 | SSW 9 | SSW 9 | ESE 8 | SSW 8 | SSW 9 | SSW 9 | SSW 9 | SE 7 | E 7 | SE 7 | SSE 11 | SSE 10 | — |
| kJ | 222 | 243 | 151 | 140 | 349 | 627 | 541 | 395 | 151 | 141 | 521 | 151 | 113 | 64 | 43 | 91 | 179 | 211 | 730 | 884 | — |
Swell 2 Height (m) Direction Period (s) | E 11 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | — | S 8 | S 8 | SSW 8 | E 13 | E 15 | — | — | SSW 8 | SSE 7 | SSW 8 | SSW 10 | SW 9 | — |
| kJ | 119 | 152 | 112 | 73 | 73 | 48 | 30 | — | 66 | 29 | 176 | 3 | 4 | — | — | 57 | 90 | 38 | 10 | 23 | — |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | — | — | E 14 | E 14 | — | — | — | — | — | ESE 11 | SSW 9 | — | — | — | — |
| kJ | 14 | 18 | 18 | 16 | 25 | 16 | — | — | 4 | 4 | — | — | — | — | — | 12 | 59 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | E 5 | E 4 | ENE 4 | NE 5 | ENE 6 | E 7 | E 7 | E 8 | NE 5 | E 8 | E 8 | E 9 | E 9 | ENE 7 | — | E 7 | E 7 | E 8 | SE 12 |
| kJ | — | — | 7 | 9 | 16 | 96 | 145 | 355 | 478 | 466 | 41 | 609 | 916 | 1494 | 600 | 203 | — | 150 | 557 | 690 | 6234 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 49 | 16 | 16 | 22 | 22 | 22 | 30 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 42 | 22 | 598 | 22 | 42 | 20 |
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.
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