Surf Forecasts:
Osaki Point surf forecast from 12 Sep 2026:
- Best quality surf: Monday 14 Sep, 3AM (local time) - 3.5ft (1.1m), 8s period, SE swell with glassy winds.
- Most powerful swell: Saturday 19 Sep, 3PM (local time) - 13ft (4.0m), 14s period, ESE swell with 7,404 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 9AM (local time) - 1.5ft (0.5m), 13s period with E 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 Sunday (Sep 13) at 9AM. The primary swell is predicted to be 0.5m and 13s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Osaki Point in the next 16 days are 4.0m 14s and forecast to arrive on Saturday (Sep 19) at 3PM. 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+) | 9AM (Sun 13th Sep) | 1.5ft (0.5m) 13s |
| Best Surf | 3AM (Mon 14th Sep) | 3.5ft (1.1m) 8s |
| Most Powerful | 3PM (Sat 19th Sep) | 13ft (4.0m) 14s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, Rusty here, breaking down the next couple weeks for Osaki Point. It starts a little slow, but there’s some potential down the line.
There’s a bit of a lull before anything worthwhile. Sunday the 13th through Monday the 14th is where the first decent window opens. Sunday morning is glassy with a tiny 1.6ft easterly swell, but there’s a risk of thunderstorms, so it’s touch-and-go. The real bet is Monday morning. We’re talking shoulder-high sets at 4ft from the SE, period is a short 8 seconds, but with glassy, pristine conditions and a light offshore wind from the SSW, it’ll be a blast. The combined energy is moderate at 261, and the water temp is a warm 82°, which is about normal for this time of year. Monday afternoon stays clean with a cross-offshore breeze, so it’s a solid option if you can paddle out.
After that, it gets rough. Tuesday the 15th through Thursday the 17th is a total wash with onshore winds and poor conditions. Friday the 18th sees the swell climb to 8ft from the east, but it’s getting smashed by a strong onshore breeze – that’s more of a kite-surfing day than a paddle session. The same goes for the weekend of the 19th and 20th, where the swell hits 13ft and 8ft with fresh onshore winds – big, blown-out, and only for the hardcore.
Now, the real standout. Look at the end of the month. Monday the 28th of September is the one to get excited about. The forecast shows a solid 20ft groundswell from the south with a very long 17-second period. The combined energy is an enormous 22,520 – that’s seriously powerful. The wind is forecast to be glassy in the morning. But here’s the thing: that’s a ton of water. Over 8ft, it’s expert-only territory, and with that long period, it might run a bit too straight for the beach and reef here. But if you’ve got the nerve and the right stick, that Monday morning could be the session of the month, if it all comes together. Right now, it’s a promising but less certain long-range bet.
Short Range ForecastModerate rain (total 16mm), heaviest on Mon night. Warm (max 28°C on Sun morning, min 24°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Wed night. Warm (max 27°C on Thu afternoon, min 23°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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) | E 13 | ESE 13 | SE 9 | SE 8 | SE 8 | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 7 | E 8 | E 9 | E 9 | ESE 16 | ESE 14 | ESE 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 85 | 253 | 148 | 206 | 158 | 247 | 334 | 255 | 199 | 165 | 121 | 166 | 96 | 67 | 422 | 728 | 879 | 985 | 3196 | 7404 | 5547 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-on | glassy | cross-off | glassy | cross-on | on | cross-on | on | cross-on | on | on | on | cross-on | on | on | on | on | on | on |
High Tide | 7:00PM1.83m | 7:32AM1.78m | 7:22PM1.79m | 8:09AM1.67m | 7:44PM1.73m | 8:48AM1.54m | 8:04PM1.66m | 9:33AM1.40m | 8:25PM1.57m | 10:38AM1.27m | 8:46PM1.48m | 2:00PM1.23m | 9:11PM1.37m | ||||||||
Low Tide | 12:58PM0.42m | 1:15AM0.29m | 1:25PM0.57m | 1:47AM0.29m | 1:50PM0.72m | 2:19AM0.34m | 2:13PM0.86m | 2:54AM0.42m | 2:34PM1.00m | 3:37AM0.53m | 2:52PM1.12m | 4:40AM0.64m | 2:36PM1.23m | ||||||||
 |  |  |  |  | | | | | | | | | |  | | |  | |  |  | |
 | 5:43 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:48 | — | — |
 | — | 6:13 | — | — | 6:12 | — | — | 6:09 | — | — | 6:08 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — |
mm | 2 | — | 2 | — | 1 | 5 | 2 | — | 4 | 1 | 2 | 5 | 1 | 4 | 3 | — | — | — | — | — | 6 |
Temp °C | 28 | 28 | 26 | 28 | 28 | 26 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 27 | 24 | 26 | 26 | 24 | 27 | 26 | 24 |
Feels °C | 32 | 32 | 31 | 31 | 30 | 30 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 24 | 26 | 28 | 26 | 27 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 13 | SE 9 | SE 8 | SE 8 | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 12 | S 11 | SE 21 | ESE 18 | ESE 16 | ESE 14 | ESE 13 |
| kJ | 53 | 253 | 148 | 206 | 158 | 247 | 334 | 255 | 199 | 165 | 121 | 166 | 96 | 67 | 11 | 2 | 17 | 835 | 3196 | 6242 | 4904 |
Swell 2 Height (m) Direction Period (s) | E 13 | SSW 7 | E 13 | E 13 | E 12 | E 12 | E 14 | E 14 | E 13 | E 14 | E 13 | E 13 | E 12 | E 12 | E 14 | — | S 10 | S 9 | S 9 | — | SSE 16 |
| kJ | 85 | 9 | 83 | 52 | 72 | 69 | 37 | 57 | 87 | 63 | 52 | 53 | 26 | 25 | 4 | — | 2 | 7 | 6 | — | 334 |
Swell 3 Height (m) Direction Period (s) | ESE 4 | SE 9 | SSW 6 | S 6 | S 7 | S 7 | E 12 | S 6 | S 7 | S 7 | S 7 | S 7 | S 7 | SE 9 | S 6 | — | — | — | — | — | — |
| kJ | 6 | 13 | 4 | 3 | 4 | 1 | 11 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | ENE 3 | NE 4 | NE 3 | NE 4 | ENE 4 | E 7 | E 8 | E 9 | E 9 | E 9 | ESE 14 | ESE 13 |
| kJ | — | — | — | — | — | — | — | — | — | 4 | 6 | 6 | 18 | 22 | 422 | 728 | 879 | 985 | 904 | 7404 | 5547 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 20 | 16 | 0 | 0 | 0 | 3 | 22 | 16 | 22 | 24 | 16 | 22 | 22 | 16 | 22 | 22 | 16 | 22 | 42 | 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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