Surf Forecasts:
Osaki Point surf forecast from 24 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 6AM (local time) - 11ft (3.5m), 15s period, SSE swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 3AM (local time) - 10ft (3.0m), 15s period, SSE swell with 4,650 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 12AM (local time) - 7ft (2.2m), 17s 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 12AM. The primary swell is predicted to be 2.2m and 17s period with a secondary swell of 2.1m and 14s. 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 3.0m 15s and forecast to arrive on Tuesday (Aug 25) at 3AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Monday (Aug 31) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 25th Aug) | 7ft (2.2m) 17s |
| Best Surf | 6AM (Tue 25th Aug) | 11ft (3.5m) 15s |
| Most Powerful | 3AM (Tue 25th Aug) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what we’ve got on the cards for the next couple of weeks.
First thing ya gotta know: the water is sitting right at 84°, which is a touch warmer than normal for this time of year. Feels nice on the skin.
The real story is a solid pulse of groundswell arriving Monday afternoon and sticking around for a few days, with strong wave energy in the water. The standout runs from Monday afternoon through Tuesday. On Monday afternoon we’re looking at a clean 7 ft swell out of the SE with a very long 16-second period pushing into Osaki Point. Winds are light from the south, cross-off, keeping things lined up and tidy. This is excellent surf but it’s no beginner wave – that size and period mean it’s for experienced surfers only.
The best of the bunch hits Tuesday morning. It’s glassy, absolutely glassy, with a bigger 10 ft swell shifting more southerly and a 14-second period. The energy is massive, and with zero wind on the face, this is gonna be world-class for the crew who can handle it. The swell direction (SSE) lines up nicely with the optimum here. It’s a heavy day, not for the faint-hearted.
Tuesday afternoon still pumps at 10 ft but the wind swings south and cross-off. Still excellent and clean, just not quite as perfect as the morning glass.
Wednesday pulls back a touch with 8 ft swell from the S and SSW, periods still at 13 seconds. Morning has a risk of thunderstorms but winds are light cross-off, keeping it clean. This is still expert territory.
By Thursday morning we’re down to 6 ft from the SSW, but the period is still 12 seconds and it’s clean with light offshore wind out of the SW. A solid day for strong intermediates willing to step up.
Thursday afternoon drops to 5 ft and the period shortens to 11 seconds. Still clean with light cross-off breeze, but the power is fading. Friday and Saturday see the swell drop further into the 3 ft–4 ft range with shorter periods around 8–9 seconds. Winds are mostly offshore or cross-off, so the surf is clean but small – fun for a cruise and a log, but not the highlight of the run.
Sunday the 30th through Monday the 31st of August is pretty ordinary. Swell holds around 2 ft–3 ft, light wind, but the juice is gone.
Then we hit a bit of a flat spell. Tuesday the 1st of September is small and glassy but only 2 ft – weak energy. Wednesday the 2nd turns onshore with poor conditions and not much better. Thursday the 3rd sees a jump in size to 8 ft from the S with a 14-second period by afternoon, but it’s blown out by onshore winds and messy. Not worth it.
Friday the 4th of September is a big one – 13 ft to 15 ft from the S, but with strong cross-onshore winds up to 25 mph and heavy rain. Kite surfers might have a field day, but for paddle surfing, this is a write-off. The energy is off the charts but the quality is poor.
Now here’s a wild card: Saturday the 5th of September. We’re looking at a massive 28 ft swell from the S with a 14-second period and light cross-shore wind in the morning, then glassy conditions in the afternoon. The energy is ludicrous. But honestly, this is too big for this break – it’s going to be washing through with nowhere to hide. This is a stay-on-the-beach-and-watch day unless you’re a big-wave charger on a proper craft.
Sunday the 6th settles to 8 ft from the S but the period drops to 10 seconds and wind is light cross-onshore – marginal at best. Monday the 7th and Tuesday the 8th of September are all in the 5 ft–6 ft range with onshore or cross-onshore winds, questionable conditions, and not much to get excited about.
All in all, grab the window from Monday afternoon through Wednesday – that’s your best run. Tuesday morning is the absolute pinnacle. After that, it’s a waiting game.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed morning. Warm (max 30°C on Wed morning, min 26°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Thu afternoon. Warm (max 30°C on Thu afternoon, min 26°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | ||||||||||||||
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) | SE 16 | SSE 17 | SSE 14 | SSE 13 | S 14 | S 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSE 9 | S 8 | SSW 9 | S 8 | SSW 8 | SSW 9 | SSW 8 | SSW 9 | SSW 9 | SSW 8 |
Wave Graph | ||||||||||||||||||||
2386 | 2702 | 4107 | 3595 | 3555 | 2305 | 1931 | 1574 | 844 | 433 | 270 | 157 | 138 | 149 | 202 | 245 | 194 | 161 | 147 | 101 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | glassy | cross-off | glassy | cross-off | cross-off | off | off | cross-off | off | off | cross-off | off | off | off | off | off | off | off |
High Tide | 5:05PM1.52m | 3:36AM1.49m | 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 | |||||||
Low Tide | 10:27PM1.07m | 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 | |||||||
— | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | |
6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | |
mm | — | — | — | — | — | 2 | — | — | 1 | 3 | 3 | 2 | — | — | — | — | 1 | — | — | — |
Temp °C | 29 | 27 | 29 | 29 | 27 | 30 | 29 | 28 | 29 | 30 | 27 | 30 | 29 | 27 | 30 | 30 | 27 | 29 | 30 | 26 |
Feels °C | 32 | 33 | 32 | 33 | 33 | 33 | 33 | 33 | 32 | 33 | 32 | 33 | 32 | 31 | 33 | 33 | 31 | 32 | 32 | 29 |
Swell 1 Height (m) Direction Period (s) | SE 16 | SSE 17 | SSE 14 | SSE 13 | S 14 | S 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSE 9 | S 8 | SSE 8 | S 8 | SSW 8 | SSW 9 | SSW 8 | SSW 9 | SSW 9 | SSW 8 |
2386 | 2702 | 4107 | 3595 | 3555 | 2305 | 1931 | 1574 | 844 | 433 | 270 | 157 | 99 | 149 | 202 | 245 | 194 | 161 | 147 | 101 | |
Swell 2 Height (m) Direction Period (s) | E 12 | SE 14 | E 12 | E 14 | E 14 | SE 9 | SE 9 | SE 9 | SSE 8 | SSE 8 | SSW 9 | SSW 9 | SW 12 | SW 9 | SW 12 | E 12 | E 11 | SE 10 | SE 10 | SE 10 |
73 | 1838 | 44 | 66 | 129 | 192 | 188 | 178 | 109 | 138 | 176 | 99 | 87 | 41 | 47 | 44 | 38 | 17 | 37 | 38 | |
Swell 3 Height (m) Direction Period (s) | S 8 | SW 8 | E 15 | E 14 | — | E 13 | E 13 | E 12 | E 12 | E 12 | E 11 | E 13 | E 13 | E 12 | E 12 | SE 11 | SE 11 | E 11 | E 7 | E 7 |
19 | 16 | 39 | 103 | — | 121 | 82 | 72 | 44 | 42 | 38 | 85 | 83 | 74 | 44 | 5 | 19 | 21 | 8 | 8 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SSW 9 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | 138 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











