Surf Forecasts:
Osaki Point surf forecast from 25 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 12PM (local time) - 10ft (3.0m), 14s period, SSE swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 12PM (local time) - 10ft (3.0m), 14s period, SSE swell with 4,070 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 12PM (local time) - 10ft (3.0m), 14s period with SSE 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 Tuesday (Aug 25) at 12PM. The primary swell is predicted to be 3.0m and 14s period with a secondary swell of 0.4m and 15s. 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 3.0m 14s and forecast to arrive on Tuesday (Aug 25) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Aug 30) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Tue 25th Aug) | 10ft (3.0m) 14s |
| Best Surf | 12PM (Tue 25th Aug) | 10ft (3.0m) 14s |
| Most Powerful | 12PM (Tue 25th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, this is Rusty comin' at ya from the local sandbar. Let's have a look at what's cookin' over the next couple of weeks.
We’ve got a major event kickin' off on Tuesday the 25th of August. A proper pulse of groundswell rolls in, and for the first few days, it’s all about Osaki Point. This spot is a consistent beach and reef set-up that handles exposed swell well, and it’s gonna be absolutely thumping. We’re talkin' a solid 12 ft of SSE swell with a long, powerful 14-second period. That’s a heavy combo – the wave energy is off the charts, registering a huge 4490. This is for experienced surfers only; beginners should sit this one out. The wind is a light cross-off, so expect clean, grinding lines. The water is a warm 84°, which is a touch warmer than what we usually see for this time of year.
Tuesday afternoon stays clean with the swell easing slightly to 10 ft, still massive and powerful. Wednesday the 26th backs down a bit to a more manageable 8 ft from the S, still very clean with light cross-off breezes. By Thursday the 27th, the energy drops, but a morning offshore wind from the SW gives us 5 ft of clean, glassy surf over a moderate 10-second period. This is the "gentle offshore and clean" window we love.
Beyond that, the swell fades, but we get a run of small, clean waves from Friday the 28th through Sunday the 30th, with morning offshores keeping things tidy. From the 31st onward, things get messy and the window really shuts down. A series of easterly winds and storms roll in from the 1st of September onwards, blowing out most of the swell. There is a fair gap of poor conditions from the 1st right through to the 9th, with onshore winds and rain making a mess of things. The only bright spot in that long stretch is a tiny, glassy 2 ft SSW swell on the morning of Wednesday the 9th of September, but that’s barely a ripple.
So, the standout call is loud and clear: Tuesday the 25th of August at Osaki Point is the absolute pinnacle. Get on it early for the biggest, cleanest, and most powerful surf of the forecast. Thursday morning the 27th is a solid backup for some clean, fun-sized waves.
Stay safe out there.
- Rusty
Short Range ForecastLight rain (total 7mm), mostly falling on Wed morning. Warm (max 30°C on Tue afternoon, min 27°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Sun afternoon. Warm (max 29°C on Fri morning, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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 14 | SSE 14 | SSE 12 | S 12 | SSW 12 | SSW 11 | SSW 10 | SSW 10 | SSE 9 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 10 | SSW 9 | SSW 8 | SSW 9 | SSW 9 | SSE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4407 | 3757 | 2147 | 1406 | 1047 | 724 | 386 | 284 | 184 | 253 | 181 | 82 | 120 | 104 | 104 | 183 | 111 | 45 | 73 | 72 | 120 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-off | cross-off | off | off | cross-off | off | off | off | cross-off | off | off | off | off | cross-off | off | cross-off | cross | glassy |
High Tide | 5:26PM1.60m | 4:21AM1.60m | 5:47PM1.67m | 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 | ||||||||
Low Tide | 10:32AM0.35m | 10:56PM0.96m | 11:06AM0.26m | 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 | |||||||
 | |  |  | |  | |  |  | |  | | | | |  | | | | | | |
 | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — |
 | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — |
mm | — | — | — | 2 | 3 | — | 1 | — | 1 | 1 | — | — | — | 2 | 2 | 1 | 4 | 2 | 1 | 1 | — |
Temp °C | 29 | 30 | 27 | 30 | 30 | 27 | 30 | 30 | 27 | 29 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 |
Feels °C | 32 | 34 | 32 | 33 | 33 | 31 | 33 | 32 | 31 | 33 | 32 | 32 | 33 | 32 | 31 | 33 | 33 | 31 | 33 | 33 | 32 |
Swell 1 Height (m) Direction Period (s) | SSE 14 | SSE 14 | SSE 12 | S 12 | SSW 12 | SSW 11 | SSW 10 | SSW 10 | SSE 9 | S 8 | S 8 | SSE 7 | SSW 8 | E 12 | E 11 | SSW 10 | SSW 9 | SSW 8 | SSW 9 | SSW 9 | SSE 10 |
| kJ | 4407 | 3757 | 2147 | 1406 | 1047 | 724 | 386 | 284 | 184 | 253 | 181 | 54 | 120 | 44 | 37 | 183 | 111 | 45 | 73 | 70 | 120 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 14 | E 14 | E 13 | SE 9 | SE 9 | SSE 8 | SSE 10 | ESE 11 | E 13 | SW 10 | SW 8 | E 12 | SW 10 | SW 9 | SE 10 | SE 10 | SW 8 | SSE 11 | SSE 10 | SSE 12 |
| kJ | 44 | 66 | 129 | 84 | 206 | 170 | 173 | 210 | 40 | 85 | 68 | 42 | 44 | 25 | 12 | 17 | 36 | 18 | 47 | 72 | 115 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 14 | — | SW 9 | E 13 | E 12 | E 12 | E 12 | E 14 | SW 11 | E 13 | S 8 | SW 11 | SSE 9 | SE 11 | E 11 | E 11 | SE 10 | E 12 | E 12 | SSW 9 |
| kJ | 39 | 103 | — | 3 | 83 | 73 | 44 | 42 | 16 | 40 | 83 | 30 | 18 | 8 | 19 | 22 | 21 | 27 | 25 | 25 | 42 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSW 9 | — | — | SSW 8 | — | SSW 7 | SSW 7 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 181 | — | — | 82 | — | 104 | 104 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 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.
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