Surf Forecasts:
Osaki Point surf forecast from 19 Aug 2026:
- Best quality surf: Monday 24 Aug, 9PM (local time) - 4.5ft (1.3m), 16s period, SE swell with glassy winds.
- Most powerful swell: Wednesday 26 Aug, 3PM (local time) - 15ft (4.5m), 17s period, SSE swell with 11,718 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 9PM (local time) - 2.5ft (0.7m), 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 0.7m 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 4.5m 17s and forecast to arrive on Wednesday (Aug 26) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Sunday (Aug 23) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 19th Aug) | 2.5ft (0.7m) 7s |
| Best Surf | 9PM (Mon 24th Aug) | 4.5ft (1.3m) 16s |
| Most Powerful | 3PM (Wed 26th Aug) | 15ft (4.5m) 17s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a proper look at what’s coming down the line for the next couple of weeks.
First off, the water’s sitting at a warm 83°F which is pretty darn average for this time of year, so no surprises there.
Right now, we’re in a bit of a flat spell. The early part of the week is a write-off. Wednesday and Thursday are small, weak, and messy, with a combined energy under 100 (99 on Wednesday arvo) and cross-onshore junk. Don’t even think about it.
The first real glimmer of hope comes on Friday the 21st of August. The morning shapes up with a clean 3ft swell from the S, with a period of 9 seconds, and glassy off the ESE at just 3 mph. The energy is building nicely (202 in the morning, 232 in the arvo). This will be fun, clean, and workable. It’s not a stand-out for the ages, but it’s the start of a nice run.
Saturday the 22nd and Sunday the 23rd are looking sweet. We’ve got clean 3ft swells from the SSW, glassy mornings, and cross-off afternoons with light breezes. Combined energy sits comfortably in the 200s. This is the kind of consistent, friendly surf you just paddle out into and enjoy.
The pick of the bunch is a much later call. Look, we’ve got a massive pulse coming through, but a lot of it is way too big and onshore. But if you can wait until Tuesday the 1st of September and Wednesday the 2nd, you’re in for a treat. The Tuesday has a solid 12ft swell from the SE with a 14-second period, and the wind goes dead glassy from the E at just 3 mph. Combined energy is massive at 4692. This is serious groundswell, long-period, and perfect early. And then Wednesday the 2nd? Calm wind, glassy, 12ft from the SSE with a 14-second period, energy at 5448. That’s “exceptional” conditions for experts. This will be big, deep, and powerful – a proper standout for the experienced crew. The long period means it’ll be better peeling on the point setup at Osaki Point than a beach break.
Mind you, there’s a gap of a few days around the 26th to 28th of August where the swell is simply too big and the wind is howling onshore. The 27th of August has a 20ft swell with fresh cross-onshore winds – that’s not surfable for anyone safely. And the 29th and 30th are still heavy and messy.
Overall, the first week is slow but builds to nice, clean surf. The real magic comes right at the start of September, but that’s a long-range promise, so keep an eye on it.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed morning. Warm (max 28°C on Wed morning, min 25°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Sat morning, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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 8 | ESE 8 | ESE 7 | ESE 10 | ESE 10 | S 9 | S 9 | S 9 | S 9 | SSW 9 | SSW 9 | SSW 10 | SSW 9 | SSW 9 | SSW 10 | SSW 10 | SE 15 | SE 16 | SE 16 | SE 15 | SSE 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 87 | 62 | 43 | 38 | 39 | 126 | 164 | 180 | 169 | 177 | 140 | 235 | 158 | 168 | 265 | 270 | 410 | 1552 | 3020 | 3158 | 4784 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | glassy | glassy | cross-off | glassy | glassy | cross-off | off | glassy | cross-off | cross-off | glassy | cross-off | cross-off | cross-on | cross | glassy | on | cross-on | cross-on |
High Tide | 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 | 5:05PM1.52m | 3:36AM1.49m | 5:26PM1.60m | ||||||||
Low Tide | 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 | 9:53AM0.46m | 10:27PM1.07m | 10:32AM0.35m | 10:56PM0.96m | ||||||||
 |  |  |  | | | | | | | | | | | | | | | | |  | |
 | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — |
 | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:38 | — | — | 6:37 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 28 | 26 | 29 | 29 | 26 | 29 | 29 | 26 | 28 | 28 | 26 | 28 | 29 | 26 |
Feels °C | 32 | 32 | 33 | 32 | 31 | 31 | 31 | 31 | 30 | 33 | 32 | 30 | 32 | 32 | 31 | 32 | 31 | 31 | 30 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 7 | E 7 | S 8 | S 9 | S 9 | S 9 | S 9 | SSW 9 | SSW 9 | SSW 10 | SSW 9 | SSW 9 | SSW 10 | SSW 10 | SSW 10 | SE 16 | SE 16 | SE 15 | SSE 16 |
| kJ | 87 | 62 | 43 | 25 | 32 | 126 | 164 | 180 | 169 | 177 | 140 | 235 | 158 | 168 | 265 | 270 | 206 | 1552 | 3020 | 3158 | 4784 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | ESE 10 | ESE 7 | SE 10 | SE 11 | ESE 11 | ESE 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | SE 13 | SE 15 | SSW 10 | SSW 10 | SSW 10 | E 14 |
| kJ | 27 | 26 | 25 | 38 | 16 | 28 | 30 | 45 | 45 | 29 | 52 | 30 | 49 | 30 | 30 | 166 | 410 | 157 | 146 | 116 | 129 |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SSW 7 | SSW 8 | ESE 10 | ESE 7 | E 7 | E 6 | ESE 6 | SE 11 | ESE 10 | ESE 13 | SE 11 | ESE 11 | SE 12 | E 12 | E 12 | E 12 | E 12 | E 14 | SSW 10 |
| kJ | 11 | 11 | 11 | 12 | 39 | 10 | 8 | 7 | 7 | 33 | 10 | 70 | 30 | 23 | 50 | 74 | 46 | 69 | 44 | 102 | 54 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WSW 2 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 20 | 0 | 22 | 49 | 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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