Surf Forecasts:
Osaki Point surf forecast from 26 Aug 2026:
- Best quality surf: Thursday 27 Aug, 3AM (local time) - 5ft (1.5m), 10s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 2 Sep, 9AM (local time) - 10ft (3.0m), 12s period, SSE swell with 2,201 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 3AM (local time) - 5ft (1.5m), 10s period with SSW 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 Thursday (Aug 27) at 3AM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 1.1m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Osaki Point in the next 16 days are 3.0m 12s and forecast to arrive on Wednesday (Sep 02) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Sunday (Aug 30) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 27th Aug) | 5ft (1.5m) 10s |
| Best Surf | 3AM (Thu 27th Aug) | 5ft (1.5m) 10s |
| Most Powerful | 9AM (Wed 2nd Sep) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, I’m looking at the charts for the next couple of weeks and it’s a mixed bag of some real tease and then some serious firepower later on. Let’s get into it.
We’re starting out at Osaki Point, which is a beach and reef set-up with a bit of a crowd possible now and then. The water temp is sitting at 84°F, which is a touch warmer than normal for this time of year, so the wetsuit can stay in the car.
The first few days are pretty average. Wednesday the 26th has a 6ft SSW swell rolling in with a 12-second period, but the wind is cross-off and the wave energy is moderate (1216). The forecast says it’s marginal, so I’d pick your tides carefully. Thursday the 27th morning is actually the pick of this early stretch – clean, gentle offshore wind from the SW, and a 4ft SSW swell with a 10-second period. The energy is still moderate (603), and the call is for very good surf conditions. But after that, it’s a slow slide into the weekend. Friday and Saturday are small, with swell dropping to 3-4ft and period dropping into the 7-8 second range, which is weak and short-period stuff. The combined energy is low (213-315), and while the winds are offshore, it’s just not a lot of push. Sunday the 30th is tiny, with 2ft and 7-second swell, and the energy is a paltry 91. Not worth paddling out for.
Then we hit a real rough patch. Monday the 31st through to Wednesday the 2nd of September looks pretty grim. The wind swings onshore and picks up, with a big pulse of swell arriving but ruined by a cross-on wind. On Tuesday the 1st, we’ve got 8ft of SSE swell, but the wind is 30 km/h from the east, and the energy is strong (1679), but the surf is poor and lumpy. Wednesday the 2nd is worse – a 12ft SE swell with 45 km/h cross-shore wind, and the energy is very strong (2757). This is messy, choppy, and honestly more interesting for kite surfing than paddle surfing. Stay out of the water.
Now, Thursday the 3rd of September, things start to clean up. The swell is still big, 10ft from the SSW with a 13-second period, and the wind turns cross-off. The energy is very strong (3990), and the surf is getting clean again. This is for experienced surfers only – it’s too big for beginners. Friday the 4th and Saturday the 5th are still on the big side, but the wind is a bit cross, so the quality is marginal.
But the real standout is the second week. Sunday the 6th is a solid 5ft S swell with a 9-second period, light cross-off wind, and clean surf. A good day for a paddle. But wait for Monday the 7th of September – that’s the gem. The morning is glassy, with 7ft of SSE swell and a 10-second period, and the energy is solid (819). The forecast is for very good surf conditions. Tuesday the 8th is even better: 10ft of SE swell, glassy again, with a 11-second period and very strong energy (2213). This is excellent surf for experienced surfers. That run continues through Wednesday the 9th and into Thursday the 10th of September. Thursday the 10th morning is the absolute peak – 12ft of S swell with a 15-second period, the longest period of the whole outlook, and the energy is massive (5926). The wind is a gentle cross-off and the waves are clean. This is exceptional surf, but only for expert surfers – it’s big and powerful, and the long period will make it pitchy at the beach break, but should be great at the reef. The afternoon gets a bit windier and the energy jumps to 6756, but it’s still a solid session.
So to wrap it up: the first week is a write-off until the 3rd, and even then it’s big and needs some caution. The real prize is from the 7th of September through to the 10th, with Monday the 7th and Thursday the 10th being the absolute standouts for clean, powerful surf.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Fri afternoon. Warm (max 30°C on Thu morning, min 26°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 16mm), heaviest on Tue afternoon. Warm (max 29°C on Sun morning, min 26°C on Sun night). Winds increasing (calm on Sun night, fresh winds from the E by Tue afternoon). | ||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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) | SSW 11 | SSW 10 | SSE 10 | SSE 9 | SSW 7 | S 8 | S 8 | SSW 8 | SSW 7 | S 8 | SSW 8 | S 8 | S 11 | SSE 11 | SSE 10 | SSE 9 | SSE 12 | SSE 12 | SSE 11 |
Wave Graph | |||||||||||||||||||
521 | 302 | 226 | 188 | 143 | 127 | 115 | 94 | 97 | 55 | 75 | 61 | 93 | 286 | 275 | 244 | 1336 | 1688 | 1542 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | off | glassy | cross | off | off | off | off | cross-off | glassy | cross-on | cross-on | on | on | cross-on | cross-on |
High Tide | 5:00AM1.71m | 6:09PM1.73m | 5:36AM1.78m | 6:30PM1.78m | 6:12AM1.83m | 6:52PM1.81m | 6:48AM1.84m | 7:15PM1.82m | 7:26AM1.80m | 7:39PM1.81m | 8:07AM1.73m | 8:04PM1.78m | |||||||
Low Tide | 11:23PM0.84m | 11:36AM0.21m | 11:50PM0.72m | 12:05PM0.20m | 00:19AM0.60m | 12:34PM0.23m | 00:48AM0.49m | 1:02PM0.31m | 1:20AM0.41m | 1:31PM0.42m | 1:54AM0.35m | 2:01PM0.57m | 2:31AM0.34m | ||||||
— | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | |
6:37 | — | 6:36 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:29 | — | |
mm | — | — | — | 1 | 1 | 4 | 2 | — | — | — | — | 1 | — | — | — | 6 | 4 | 5 | 18 |
Temp °C | 27 | 30 | 30 | 27 | 30 | 28 | 27 | 30 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 |
Feels °C | 31 | 32 | 33 | 31 | 34 | 34 | 32 | 32 | 31 | 31 | 33 | 33 | 31 | 32 | 32 | 31 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 10 | SSW 9 | SSE 9 | SSW 8 | S 8 | S 8 | SSW 8 | E 12 | S 8 | SSW 8 | S 8 | S 8 | SSE 11 | SSE 10 | SSE 9 | SSE 12 | SSE 12 | SSE 11 |
521 | 302 | 226 | 188 | 113 | 127 | 115 | 94 | 43 | 55 | 75 | 61 | 58 | 286 | 275 | 244 | 1336 | 1688 | 1542 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | SSE 9 | SSE 10 | S 8 | SSE 8 | E 13 | E 12 | E 12 | SSE 9 | E 11 | E 11 | S 13 | S 11 | SSW 10 | SW 9 | S 11 | SSW 10 | E 12 | E 11 |
166 | 194 | 214 | 21 | 78 | 83 | 74 | 44 | 8 | 37 | 21 | 55 | 93 | 38 | 21 | 116 | 9 | 26 | 39 | |
Swell 3 Height (m) Direction Period (s) | E 12 | E 12 | E 12 | E 11 | E 13 | SSE 8 | SW 11 | SE 10 | SSE 11 | SE 11 | SE 10 | SE 10 | SE 10 | E 11 | E 11 | SSE 15 | E 10 | — | E 14 |
72 | 68 | 42 | 37 | 85 | 25 | 19 | 14 | 12 | 19 | 28 | 36 | 28 | 21 | 20 | 72 | 8 | — | 16 | |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 8 | SSW 7 | — | — | — | SSW 7 | SW 4 | SW 4 | SW 3 | — | — | — | — | ENE 10 | — | — |
— | — | — | 126 | 143 | — | — | — | 97 | 9 | 7 | 6 | — | — | — | — | 21 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 509 | 22 | 519 | 497 | 497 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











