Surf Forecasts:
Osaki Point surf forecast from 8 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 12PM (local time) - 7.5ft (2.3m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 3AM (local time) - 11ft (3.5m), 9s period, SSE swell with 2,257 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 12PM (local time) - 7.5ft (2.3m), 8s period with S 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 (Sep 09) at 12PM. The primary swell is predicted to be 2.3m and 8s period with a secondary swell of 0.1m and 18s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Osaki Point in the next 16 days are 3.5m 9s and forecast to arrive on Wednesday (Sep 09) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Wednesday (Sep 09) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 9th Sep) | 7.5ft (2.3m) 8s |
| Best Surf | 12PM (Wed 9th Sep) | 7.5ft (2.3m) 8s |
| Most Powerful | 3AM (Wed 9th Sep) | 11ft (3.5m) 9s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming down the pipe for Osaki Point.
Honestly, the next 16 days are a bit of a mixed bag. There’s a couple of moments that’ll get the heart rate up, but the wait between them is painful. The forecast kicks off with a bit of swell, but the quality is poor or the timing is off for a long stretch.
Our first real chance comes in with an afternoon session on Tuesday, September 8. It’s a stormy day with a risk of thunderstorms, but the swell is a junky 6 ft out of the south. The period is short at 9 seconds, and with SSE winds at 9 mph, it’s cross-shore and a bit chopped. The water is a warm 83°, which is a touch warmer than normal for this time of year. The wave energy is moderate (909). It’s a beach and reef setup, so it might be a bit of a mess for the paddle. Honestly, conditions are marginal and the score is weak.
Then there’s a gap of nearly nothing worth paddling for until we hit Tuesday, September 15. That morning, the wind drops to glassy – just 3 mph from the ENE. The swell is a clean 5 ft from the ESE with a 9-second period and moderate energy (361). It’s glassy and clean, and the afternoon looks even better with a light offshore breeze from the SW at 6 mph, keeping it clean (369). This is the standout window. The water temperature data isn’t given for these days, but with consistent offshore or glassy conditions, Osaki Point will be smooth and lined up. It’s a beach and reef break, and with crowds reported as *sometimes*, you might have a few others out, but it’s worth it. The next morning, Wednesday September 16, also looks very good with a 4 ft ESE swell and clean offshore winds (237). This is your best bet for a proper session.
After that, from Thursday September 17 onward, it drops right off. The swell gets smaller, the winds turn onshore or cross-onshore, and the energy drops to weak (below 100). There are nearly five days of nothing worthwhile, just small, choppy, or blown-out conditions.
So, the call is clear: aim for Tuesday, September 15, morning and afternoon, and Wednesday, September 16, morning. That’s the sweet spot with clean conditions and a fun-sized swell.
This has been Rusty. Stay frothy.
Short Range ForecastHeavy rain (total 61mm), heaviest during Tue night. Warm (max 28°C on Tue afternoon, min 22°C on Wed night). Winds decreasing (fresh winds from the SSE on Tue night, light winds from the NE by Thu night). | Days 5-7 Weather SummaryHeavy rain (total 33mm), heaviest during Mon morning. Warm (max 27°C on Sun morning, min 23°C on Mon morning). Wind will be generally light. | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | S 9 | SSE 10 | S 9 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 7 | E 14 | E 14 | E 14 | E 13 | ESE 13 | ESE 9 | ESE 8 | ESE 9 | ESE 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 614 | 1778 | 1450 | 549 | 197 | 184 | 151 | 131 | 131 | 110 | 76 | 89 | 91 | 96 | 85 | 184 | 238 | 223 | 297 | 340 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | off | on | cross-on | cross-on | on | on | on | on | on | on | on | glassy | on | cross-on | on | cross-on | cross-on | cross-on |
High Tide | 4:53PM1.68m | 3:59AM1.68m | 5:22PM1.76m | 4:50AM1.80m | 5:48PM1.81m | 5:34AM1.87m | 6:14PM1.84m | 6:15AM1.89m | 6:38PM1.84m | 6:54AM1.86m | 7:00PM1.83m | 7:32AM1.78m | 7:22PM1.79m | |||||||
Low Tide | 10:29PM0.91m | 10:42AM0.17m | 11:05PM0.73m | 11:21AM0.16m | 11:39PM0.57m | 11:56AM0.20m | 00:12AM0.43m | 12:28PM0.29m | 00:44AM0.34m | 12:58PM0.42m | 1:15AM0.29m | 1:25PM0.57m | 1:47AM0.29m | |||||||
 |  |  |  |  | |  | |  | |  | | | | | | | |  | | |
 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — |
 | 6:20 | — | — | 6:19 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | 6:12 | — |
mm | 9 | 34 | 9 | 3 | 2 | 1 | — | 1 | 2 | 1 | 3 | 3 | 4 | 4 | 1 | 3 | 6 | 8 | 12 | 24 |
Temp °C | 28 | 28 | 27 | 26 | 23 | 25 | 24 | 24 | 24 | 25 | 24 | 25 | 26 | 26 | 27 | 27 | 25 | 25 | 24 | 25 |
Feels °C | 32 | 30 | 28 | 28 | 21 | 25 | 24 | 26 | 28 | 29 | 27 | 28 | 30 | 31 | 30 | 30 | 28 | 28 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | S 9 | E 19 | E 18 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 7 | S 7 | S 7 | S 7 | E 13 | ESE 13 | ESE 9 | ESE 8 | ESE 9 | ESE 9 |
| kJ | 614 | 7 | 6 | 549 | 197 | 184 | 151 | 131 | 131 | 110 | 76 | 48 | 35 | 23 | 85 | 184 | 238 | 223 | 297 | 340 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | — | — | E 18 | E 16 | E 16 | E 15 | SSW 8 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | ESE 9 | S 7 | E 13 | E 13 | E 12 | E 14 |
| kJ | 40 | — | — | 6 | 21 | 21 | 18 | 12 | 69 | 60 | 63 | 89 | 91 | 96 | 46 | 15 | 83 | 52 | 48 | 35 |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 18 | E 16 | — | E 18 | E 15 | E 14 | E 14 | ESE 10 | SE 10 | ESE 10 | ESE 9 | S 7 | — | SSW 6 | SSW 8 | SSW 8 | SSW 8 |
| kJ | — | — | — | 6 | 21 | — | 6 | 38 | 65 | 60 | 18 | 24 | 31 | 32 | 15 | — | 8 | 13 | 12 | 11 |
Wind waves Height (m) Direction Period (s) | SE 8 | SSE 10 | S 9 | NE 2 | NE 6 | NE 6 | NE 5 | NNE 4 | E 8 | ENE 7 | ENE 6 | E 5 | E 5 | E 5 | ESE 4 | ESE 4 | — | — | — | NE 4 |
| kJ | 255 | 1778 | 1450 | 1 | 130 | 111 | 40 | 1 | 57 | 49 | 23 | 25 | 24 | 34 | 15 | 27 | — | — | — | 12 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 20 | 20 | 20 | 22 | 22 | 16 | 22 | 16 | 16 | 16 | 22 | 22 | 16 | 0 | 22 | 22 | 16 | 22 | 16 | 22 |
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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