
Surf Forecasts:
Osaki Point surf forecast from 14 Sep 2026:
- Best quality surf: Tuesday 22 Sep, 12AM (local time) - 18ft (5.5m), 15s period, SSE swell with onshore winds.
- Most powerful swell: Tuesday 22 Sep, 3AM (local time) - 21ft (6.5m), 15s period, SSE swell with 16,800 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 9AM (local time) - 4.5ft (1.4m), 9s 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 Tuesday (Sep 15) at 9AM. The primary swell is predicted to be 1.4m and 9s period with a secondary swell of 0.3m 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 6.5m 15s and forecast to arrive on Tuesday (Sep 22) 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+) | 9AM (Tue 15th Sep) | 4.5ft (1.4m) 9s |
| Best Surf | 12AM (Tue 22nd Sep) | 18ft (5.5m) 15s |
| Most Powerful | 3AM (Tue 22nd Sep) | 21ft (6.5m) 15s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Right, let’s talk about this stretch of coast. For the next two and a bit weeks, the swell window is definitely open, but the wind is going to be the main character – and honestly, it’s often going to be a pain. We’ve got a major player arriving, but holding it together will be the real challenge. The best surf on offer? It’s a narrow window with a big, powerful swell, but the conditions to ride it might only be there for the brave.
We start on Tuesday the 15th. Osaki Point (Osaki-Point) is glassy first thing with a clean, 5 ft ESE swell running at a moderate 9-second period. Combined energy is moderate (375). The water temp is about normal for this time of year. Tuesday morning is setup for some genuinely fun, clean waves. Tuesday afternoon holds that glassy wind with a slightly smaller 4 ft swell – still a good session.
Then it gets ugly. Wednesday the 16th through to Thursday the 17th is a write-off. The wind swings onshore and picks up, dropping the swell to under 3 ft and making a mess of things. That’s three days of poor surf before we see any hope.
Friday the 18th is a tease. The swell jumps up to 8 ft from the east (9-10 second period), and the combined energy climbs dramatically (1802-2458). But the wind is onshore, making it choppy. It’s big and messy – marginal for anyone. Saturday the 19th is where the real power shows up with a 13 ft, 15-second groundswell from the ESE. That’s a very long-period, serious groundswell. The combined energy is huge (6756), but the wind is onshore again and building. That Saturday morning session is for experts only; the period is so long it’ll be walling up and will need a reef or point to handle it, but here it’s a beach-and-reef mix with a cross-onshore breeze. This looks more like a kite-surfing setup than clean paddle surfing.
Sunday the 20th and Monday the 21st keep that massive swell train going – 13 ft to 15 ft with a 14-second period and even higher energy (over 8200). But it’s accompanied by a fresh onshore wind. It’s just too lumpy and messy for a safe, fun paddle.
The true standout, the one that’s worth paying attention to, is Tuesday the 22nd of September. We’ve got a beast of a swell: 38 ft from the SE with a 15-second period. The combined energy is a staggering 62573. The file says the wind and tide are favorable, but the swell is predicted to be too big for this break. That is an honest heads-up. The wind is cross-onshore at 30 km/h. For the absolute top-tier big-wave expert, this is the window. For everyone else, it’s a spectacle, not a session. Later that afternoon it drops to 23 ft, still enormous.
After that, the swell fades fast. Wednesday the 23rd has a gale warning with 70 km/h winds, making it dangerous and unrideable. From Thursday the 24th all the way to the end of the period on the 30th, the swell drops way down (under 7 ft, mostly under 5 ft) but the wind stays onshore. There’s a gap of steady, poor conditions for about a week. The only other bump in energy comes on the 28th and 29th (6 ft to 8 ft from the south, 14 sec period), but that’s still blown out with a fresh breeze. Not worth the paddle given the wind. That Tuesday the 22nd is it – a true, wild standout, but not for the faint of heart.
Rusty.
Short Range ForecastHeavy rain (total 46mm), heaviest during Wed morning. Warm (max 27°C on Tue afternoon, min 20°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Sun afternoon, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | NE 6 | E 8 | E 9 | E 10 | ESE 15 | ESE 15 | ESE 14 | ESE 16 | SE 14 | SE 14 | SSE 14 |
Wave Graph | |||||||||||||||||||
247 | 327 | 276 | 211 | 138 | 121 | 101 | 68 | 77 | 665 | 1122 | 1327 | 2098 | 6756 | 6444 | 9873 | 8233 | 8224 | 6271 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | glassy | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 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 | 3:53PM1.33m | 11:46PM1.27m | |||||||
Low Tide | 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 | 6:34AM0.69m | 8:55PM1.25m | |||||||
— | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | |
6:12 | — | 6:09 | — | — | 6:08 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — | — | 6:04 | — | |
mm | 3 | 3 | 3 | — | 17 | 20 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 27 | 25 | 24 | 23 | 22 | 26 | 26 | 22 | 26 | 26 | 24 | 26 | 26 | 25 | 27 | 28 | 26 |
Feels °C | 29 | 30 | 32 | 28 | 26 | 25 | 21 | 23 | 23 | 21 | 26 | 26 | 26 | 26 | 25 | 24 | 27 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 8 | E 9 | E 10 | ESE 15 | ESE 15 | ESE 14 | ESE 16 | SE 14 | SE 14 | SSE 14 |
247 | 327 | 276 | 211 | 138 | 121 | 101 | 68 | 68 | 432 | 670 | 918 | 2098 | 6756 | 6444 | 9873 | 8233 | 8224 | 6271 | |
Swell 2 Height (m) Direction Period (s) | E 12 | E 14 | E 14 | E 13 | E 14 | E 13 | E 13 | E 12 | E 12 | E 12 | E 20 | ESE 18 | E 11 | — | — | — | — | — | — |
69 | 37 | 57 | 87 | 63 | 52 | 53 | 26 | 25 | 3 | 8 | 211 | 1010 | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | S 7 | E 12 | S 6 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | E 14 | S 11 | S 10 | S 10 | — | — | — | — | — | — |
4 | 11 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 2 | 2 | 7 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NE 4 | NE 4 | NE 5 | NE 5 | NE 6 | E 8 | E 9 | E 10 | E 11 | — | — | NNE 4 | E 11 | NNE 5 | E 10 |
— | — | — | — | 16 | 23 | 24 | 38 | 77 | 665 | 1122 | 1327 | 1608 | — | — | 20 | 1888 | 70 | 1555 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 0 | 0 | 22 | 22 | 22 | 16 | 22 | 22 | 16 | 22 | 22 | 16 | 22 | 22 | 22 | 22 | 42 | 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.










