Surf Forecasts:
Osaki Point surf forecast from 17 Aug 2026:
- Best quality surf: Thursday 20 Aug, 9PM (local time) - 3.5ft (1.0m), 9s period, S swell with glassy winds.
- Most powerful swell: Friday 21 Aug, 3PM (local time) - 4.5ft (1.4m), 10s period, S swell with 424 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 9PM (local time) - 3ft (0.9m), 7s period with ESE 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 (Aug 19) at 9PM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 10s. 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 1.4m 10s and forecast to arrive on Friday (Aug 21) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 19th Aug) | 3ft (0.9m) 7s |
| Best Surf | 9PM (Thu 20th Aug) | 3.5ft (1.0m) 9s |
| Most Powerful | 3PM (Fri 21st Aug) | 4.5ft (1.4m) 10s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s chew the fat about what’s on the cards at Osaki Point.
Right out of the gate, from Monday the 17th through to Friday the 21st, it’s a tough stretch. The wind’s mostly cross-onshore, the swell is tiny – under 3 feet – and the wave energy is weak, barely cracking triple digits. It’s flat and sloppy. Not worth suiting up.
Saturday the 22nd afternoon is where we finally see some light. A cross-offshore breeze from the south at 6 mph cleans things up. The swell is 4 ft from the SSW, with moderate energy (294). Not a monster, but clean and rideable. Sunday the 23rd keeps that going – clean in the morning with a 3 ft SSW swell. Then Monday the 24th morning turns glassy. Dead flat water, small but perfect 3 ft waves from the SSW.
Here’s the one to circle. Tuesday the 25th morning the swell starts to push. By the afternoon, we’ve got 6 ft from the SE with a 16-second period – that’s real groundswell, packing punch (1887 energy). Winds are light cross-offshore, so it’ll be clean and powerful. For experienced surfers, that’s the call. Wednesday the 26th morning is even bigger: 8 ft from the SE, a 15-second period, glassy, and energy at 3236 – strong stuff. Expert only, but if you’re keen, that’s the session.
Watch out though: from Wednesday afternoon, the wind shifts and gets lumpy. Thursday the 27th is blown out, and by Friday the 28th, it’s a mess with 18 mph winds and the swell climbing fast. From the 30th of August through to the 1st of September, the swell is 16 ft and above – way too big for this break. Energy readings hit the tens of thousands (11035 up to 22463). Kite surfers might love it, but for a paddle surfer, it’s a hard no.
Best bet: surf from Saturday the 22nd afternoon through to Wednesday the 26th morning. The absolute standout is Tuesday the 25th afternoon and Wednesday the 26th morning – big, clean, and powerful for those with the skills. The rest of the forecast is either flat, messy, or dangerously overhead.
Stay safe out there.
Rusty
Short Range ForecastLight rain (total 8mm), mostly falling on Mon morning. Warm (max 28°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Thu afternoon. Warm (max 28°C on Thu morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | ESE 9 | ESE 9 | ESE 9 | E 8 | ESE 5 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | E 7 | S 9 | S 9 | S 9 | S 10 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 203 | 154 | 106 | 50 | 46 | 119 | 85 | 77 | 69 | 38 | 104 | 152 | 207 | 424 | 342 | 282 | 230 | 185 | 146 | 143 | 111 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | cross | glassy | cross-on | cross | glassy | cross | cross-off | glassy | cross-off | cross-off | cross-off |
High Tide | 8:39PM1.71m | 9:15AM1.51m | 9:02PM1.65m | 10:05AM1.37m | 9:25PM1.57m | 11:19AM1.24m | 9:52PM1.48m | 2:11PM1.21m | 10:36PM1.40m | 4:23PM1.32m | 00:37AM1.34m | 4:44PM1.42m | 2:32AM1.39m | ||||||||
Low Tide | 2:30PM0.57m | 3:02AM0.48m | 2:55PM0.76m | 3:43AM0.53m | 3:19PM0.92m | 4:32AM0.59m | 3:42PM1.07m | 5:43AM0.65m | 4:02PM1.20m | 7:29AM0.66m | 8:20PM1.27m | 8:58AM0.58m | 9:52PM1.18m | ||||||||
 |  |  |  | |  |  | | | | | | | |  | | | | | | | |
 | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — |
 | — | 6:47 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — |
mm | 2 | — | — | 2 | 1 | 1 | — | — | 2 | 2 | 3 | 1 | 1 | 1 | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 29 | 29 | 26 |
Feels °C | 30 | 31 | 30 | 30 | 30 | 30 | 31 | 32 | 31 | 32 | 33 | 31 | 32 | 32 | 31 | 31 | 31 | 31 | 32 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | ESE 9 | ESE 9 | E 8 | E 8 | SE 10 | SE 10 | SE 10 | ESE 7 | S 8 | S 9 | S 9 | S 9 | S 10 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 |
| kJ | 37 | 154 | 106 | 50 | 33 | 28 | 26 | 25 | 69 | 35 | 104 | 152 | 207 | 424 | 342 | 282 | 230 | 185 | 146 | 143 | 111 |
Swell 2 Height (m) Direction Period (s) | SE 11 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 7 | SSW 8 | SSW 8 | SE 10 | ESE 10 | E 7 | E 9 | ESE 11 | ESE 11 | ESE 9 | ESE 8 | E 10 | E 10 | E 10 | E 9 | E 11 |
| kJ | 30 | 32 | 30 | 23 | 19 | 11 | 11 | 11 | 25 | 38 | 22 | 40 | 44 | 45 | 26 | 19 | 47 | 49 | 67 | 27 | 66 |
Swell 3 Height (m) Direction Period (s) | — | SE 11 | SE 11 | SE 11 | SE 11 | SW 9 | SW 9 | SW 9 | SSW 7 | ENE 9 | ESE 10 | SE 11 | E 9 | ESE 8 | SE 11 | ESE 11 | SE 10 | ESE 13 | SE 11 | SE 11 | E 9 |
| kJ | — | 30 | 30 | 30 | 29 | 3 | 3 | 3 | 11 | 7 | 39 | 29 | 24 | 24 | 30 | 24 | 17 | 54 | 30 | 29 | 27 |
Wind waves Height (m) Direction Period (s) | ESE 9 | — | — | ESE 5 | ESE 5 | ESE 8 | ESE 8 | ESE 8 | — | E 7 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 203 | — | — | 27 | 46 | 119 | 85 | 77 | — | 33 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 20 | 16 | 22 | 20 | 16 | 22 | 20 | 0 | 22 | 20 | 0 | 16 | 20 | 0 | 16 | 0 | 0 | 0 | 0 | 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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