Surf Forecasts:
Osaki Point surf forecast from 13 Sep 2026:
- Best quality surf: Monday 14 Sep, 6AM (local time) - 3.5ft (1.1m), 8s period, SE swell with glassy winds.
- Most powerful swell: Monday 21 Sep, 3AM (local time) - 16ft (5.0m), 14s period, SE swell with 10,933 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 6AM (local time) - 3.5ft (1.1m), 8s period with SE 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 Monday (Sep 14) at 6AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.5m and 13s. 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 5.0m 14s and forecast to arrive on Monday (Sep 21) at 3AM. 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+) | 6AM (Mon 14th Sep) | 3.5ft (1.1m) 8s |
| Best Surf | 6AM (Mon 14th Sep) | 3.5ft (1.1m) 8s |
| Most Powerful | 3AM (Mon 21st Sep) | 16ft (5.0m) 14s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, let’s run through that in feet and miles.
Osaki Point is a beach and reef break, open to south-east swell. Water temp is normal for the season.
Monday the 14th, early morning: glassy, light wind from the ESE, swell about 4ft from the SE, period 8 seconds, energy moderate (218). Clean start. Afternoon goes cross-off with a storm risk, still surfable.
Tuesday the 15th afternoon is the real gem—glassy again, 4ft of ESE swell, 9-second period, energy 334. Smooth, shoulder-high, nice lines.
From Wednesday the 16th onward, it’s onshore junk. A big swell hits Saturday the 19th—12ft, 15-second period, massive energy (5726)—but with onshore wind, it’s only for experts and even then, messy. Sunday the 20th gets worse: 13ft, cross-on 15 mph wind, choppy.
Monday the 21st and Tuesday the 22nd bring storm surf up to 20ft with 50 mph winds. That’s full-on danger, paddle out at your own risk.
After the 23rd, it’s flat and weak—2ft or less. A small bump on the 28th (6ft, 12-second period, energy 1054) but wind kills it.
Your best bet is Tuesday the 15th afternoon. That’s the one clean session in the whole run.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Tue morning. Warm (max 28°C on Mon morning, min 24°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 18mm), heaviest on Thu night. Warm (max 29°C on Sat afternoon, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | SE 9 | SE 8 | SE 8 | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 8 | E 8 | E 9 | ESE 16 | ESE 15 | ESE 14 | ESE 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 148 | 162 | 158 | 300 | 320 | 276 | 211 | 165 | 119 | 157 | 86 | 186 | 329 | 709 | 780 | 1857 | 5720 | 6124 | 4865 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-off | glassy | cross-on | glassy | cross-on | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 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 | 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 | |||||||
 |  |  | | | | | | | |  | |  |  | |  | | | | |
 | — | 5:45 | — | — | 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 | 1 | — | 2 | 1 | 4 | 2 | 2 | 1 | 5 | 1 | — | 1 | 12 | 3 | 1 | — | — | — | — |
Temp °C | 26 | 28 | 28 | 24 | 26 | 27 | 25 | 26 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 25 | 28 | 29 | 26 |
Feels °C | 31 | 32 | 30 | 28 | 30 | 31 | 29 | 28 | 28 | 26 | 27 | 27 | 25 | 27 | 27 | 27 | 29 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 8 | SE 8 | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 12 | E 12 | SE 20 | ESE 18 | ESE 16 | ESE 15 | ESE 14 | ESE 13 |
| kJ | 148 | 162 | 158 | 300 | 320 | 276 | 211 | 165 | 119 | 157 | 86 | 25 | 11 | 15 | 130 | 1857 | 5720 | 6124 | 4865 |
Swell 2 Height (m) Direction Period (s) | E 13 | E 13 | E 12 | E 12 | E 14 | E 14 | E 13 | E 14 | E 13 | E 13 | E 12 | S 7 | E 15 | S 11 | S 10 | S 9 | S 9 | S 9 | — |
| kJ | 83 | 52 | 72 | 69 | 37 | 57 | 87 | 63 | 52 | 53 | 26 | 1 | 4 | 2 | 2 | 7 | 6 | 6 | — |
Swell 3 Height (m) Direction Period (s) | SSW 6 | SSW 6 | S 7 | S 7 | E 12 | S 6 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 | — | — | — | — | — | — |
| kJ | 4 | 4 | 4 | 1 | 11 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | ENE 4 | ENE 4 | ESE 4 | E 4 | E 9 | E 8 | E 8 | E 9 | E 8 | — | — | — |
| kJ | — | — | — | — | — | — | — | 11 | 5 | 23 | 26 | 186 | 329 | 709 | 780 | 691 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 16 | 0 | 20 | 0 | 16 | 0 | 16 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 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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