Surf Forecasts:
Osaki Point surf forecast from 23 Aug 2026:
- Best quality surf: Monday 24 Aug, 6PM (local time) - 8ft (2.5m), 16s period, SE swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 3AM (local time) - 10ft (3.0m), 16s period, SSE swell with 4,796 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 12AM (local time) - 2ft (0.6m), 12s 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 (Aug 24) at 12AM. The primary swell is predicted to be 0.6m and 12s period with a secondary swell of 0.6m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Osaki Point in the next 16 days are 3.0m 16s and forecast to arrive on Tuesday (Aug 25) at 3AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 24th Aug) | 2ft (0.6m) 12s |
| Best Surf | 6PM (Mon 24th Aug) | 8ft (2.5m) 16s |
| Most Powerful | 3AM (Tue 25th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cooking for Osaki Point.
The first few days are a slow burn, but once it turns on, it really turns on. There's no wait for the first waves, with something rideable from Sunday afternoon, but the real magic is locked and loaded for a few mornings you won't want to miss. After that, the wind gets ugly and the whole thing gets messy, so you need to be sharp on the timing.
We get things started Sunday afternoon the 23rd with small 2ft swell from the SSW. The energy is weak (111), and with a cross-off breeze, it's nothing to write home about. Just a splash to get the arms moving.
Monday the 24th is where it starts to get interesting. Morning brings a glassy clean sheet and a 4ft groundswell from the SE with a long period of 19 seconds. The combined energy jumps to 1125. This is solid and will offer some proper lines on the reef, though that long period might make it a little straight at the beachy sections. By the afternoon, it's pushing 7ft from the SE with 16 seconds, and the energy is up at 2478 – still cross-off but very, very clean.
Tuesday the 25th is the standout of the whole run. Morning glass with a 10ft SSE swell, 14-second period, and energy pumping at 4579. This is excellent, expert-level surf. The wind is dead calm, the water’s a warm 84°F, which is about average for this time of year. That’s the session to be out there. The afternoon stays clean at 10ft with a light cross-off. Wednesday the 26th is still excellent, with 8ft glass in the morning (energy 2534) and dropping to 7ft in the afternoon with a risk of t-storms.
Thursday the 27th is still good, with 5ft SSE swell and a light cross-off, energy at 754. By Friday the 28th, it drops to the 3-4ft range with a period under 10 seconds, energy back under 400. It’s still clean and okay for a longboard or a fish, but nothing compared to the earlier punch.
Saturday the 29th and Sunday the 30th see it fade further, with 4ft and 3ft, period dropping to 8 seconds. The weekend is small and weak.
Now here's the bad news. From Monday the 31st afternoon, the onshore wind kicks in and it gets ugly. Through the end of the first week of September and into the second week, we see onshore and cross-onshore gales, with swell well over 8ft up to 12ft. The energy is huge (over 4400 on the 5th), but it's all blown-out mess. The setup here turns into a kite-surfing dream but a paddle nightmare. That lasts right through to the 7th of September, with strong to near-gale winds ruining everything.
Tuesday the 8th and beyond might clean up, but that's too far out to call with any certainty.
The best is the morning of Tuesday the 25th: glassy, 10ft SSE, and a lifetime of energy. Wednesday the 26th morning is next best. Everything else is either small, or a battle with the wind.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Wed morning, min 26°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 31mm), heaviest during Thu night. Warm (max 30°C on Thu morning, min 25°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sun 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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) | SSW 8 | SE 12 | SE 19 | SE 16 | SSE 17 | SSE 14 | SSE 14 | S 14 | S 13 | S 12 | SSW 11 | SSW 11 | SSE 9 | SSE 9 | SSW 9 | SSW 9 | SSW 9 | S 8 | S 8 | S 8 |
Wave Graph | ||||||||||||||||||||
48 | 93 | 911 | 2386 | 2215 | 3052 | 3644 | 3657 | 2243 | 1249 | 759 | 531 | 249 | 281 | 141 | 176 | 213 | 165 | 133 | 108 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | glassy | cross-off | glassy | glassy | cross-off | glassy | glassy | cross-off | glassy | cross-off | cross-off | glassy | glassy | cross-off | off | glassy | cross-off | off |
High Tide | 4:44PM1.42m | 2:32AM1.39m | 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 | |||||||
Low Tide | 9:52PM1.18m | 9:53AM0.46m | 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 | |||||||
— | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | |
6:40 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:34 | — | — | 6:32 | — | |
mm | — | — | — | — | — | — | — | — | — | 1 | — | 3 | 3 | 10 | 9 | 3 | 2 | — | — | — |
Temp °C | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 26 | 30 | 29 | 28 | 30 | 27 | 27 | 28 | 29 | 27 | 29 | 30 | 27 |
Feels °C | 32 | 32 | 33 | 33 | 32 | 32 | 32 | 31 | 34 | 33 | 33 | 33 | 31 | 31 | 32 | 33 | 31 | 33 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SW 8 | SE 19 | SE 16 | SE 14 | SSE 14 | SSE 14 | S 14 | S 13 | S 12 | SSW 11 | SSW 11 | SSE 9 | SSE 9 | SSW 9 | SSW 9 | SSW 9 | S 8 | S 8 | S 8 |
48 | 57 | 911 | 2386 | 1838 | 3052 | 3644 | 3657 | 2243 | 1249 | 759 | 531 | 249 | 281 | 141 | 176 | 213 | 165 | 133 | 108 | |
Swell 2 Height (m) Direction Period (s) | S 8 | SE 12 | SE 12 | E 12 | SSE 17 | S 18 | E 14 | E 14 | SE 9 | SE 9 | SE 9 | SSE 8 | SSW 10 | SW 9 | SSE 8 | SSE 8 | SE 7 | E 12 | E 12 | SW 10 |
34 | 93 | 139 | 73 | 2215 | 1421 | 66 | 129 | 170 | 211 | 182 | 179 | 245 | 83 | 103 | 74 | 25 | 68 | 43 | 53 | |
Swell 3 Height (m) Direction Period (s) | E 10 | S 8 | E 12 | S 8 | SW 8 | E 15 | E 11 | — | E 13 | E 13 | E 12 | E 12 | E 12 | ESE 11 | E 13 | E 13 | E 12 | SW 11 | SW 11 | E 11 |
29 | 22 | 75 | 19 | 16 | 106 | 37 | — | 121 | 82 | 73 | 44 | 42 | 40 | 85 | 83 | 74 | 20 | 30 | 38 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
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 | ||||||||||||||||||||
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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.











