Surf Forecasts:
Osaki Point surf forecast from 6 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 3PM (local time) - 6.5ft (2.0m), 9s period, SSE swell with glassy winds.
- Most powerful swell: Sunday 6 Sep, 3PM (local time) - 11ft (3.5m), 10s period, E swell with 2,058 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 3PM (local time) - 4.5ft (1.4m), 9s 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 (Sep 07) at 3PM. The primary swell is predicted to be 1.4m and 9s period with a secondary swell of 0.8m and 8s. Another secondary swell of 0.8m and 5s is also forecast. 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 3.5m 10s and forecast to arrive on Sunday (Sep 06) 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 1.3m 6s period and expected on Thursday (Sep 10) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Mon 7th Sep) | 4.5ft (1.4m) 9s |
| Best Surf | 3PM (Wed 9th Sep) | 6.5ft (2.0m) 9s |
| Most Powerful | 3PM (Sun 6th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. We’ve got a solid 16-day window ahead, but it’s a bit of a mixed bag at Osaki Point. The first few days are a write-off thanks to rain and strong onshore winds, but there are a couple of windows where it all comes together. The water is sitting at 85°, which is a touch warmer than normal for this time of year, so you’ll be comfortable in boardshorts.
The first real chance to paddle out comes on Monday the 7th of September. The morning is still a bit messy with a gentle cross-onshore breeze and 6ft of swell from the SE, but it’s the afternoon that catches the eye. The wind drops to glassy, and we’re looking at a clean 5ft swell from the SE, with a period of 9 seconds. The combined energy is moderate (495), and conditions are glassy. This is a proper session for an intermediate surfer. The swell direction is a touch east of the optimum SSE, but with the wind dead calm, it’s going to be clean and fun.
Then we have a bit of a lull. Tuesday and Wednesday are mostly onshore and choppy, but Wednesday the 9th of September afternoon is a standout. The wind swings to glassy again, and we’ve got a 7ft swell from the SSE, which is right on the money for this spot. The period is 9 seconds, and the combined energy is moderate (611). This is the best on offer in the first week. The swell is solid and clean, perfect for an intermediate. Keep in mind the break is consistent, but it can get crowded sometimes, so get there early.
After that, the surf drops off significantly. The second week is a grind. There’s a small window on the 16th of September, a Wednesday morning, with glassy conditions and 5ft from the ESE, but the period is only 9 seconds. The energy is moderate (401). It’s surfable, but nothing special. The rest of the week is plagued by onshore winds and very small swells, often under 3ft. The 18th and 19th of September have some tiny, glassy waves, but we’re talking flatty territory – 1ft to 3ft swell with very low energy (58 to 85). It’s more of a longboard session or a paddle. The 20th and 21st see a bit of offshore wind, but the swell is tiny, barely 1ft, and the energy is weak (52 to 62). Not worth rushing for.
The best bet in the whole run is that Wednesday afternoon, the 9th of September. The combination of a solid 7ft SSE swell, glassy wind, and the right direction makes it the standout. The Monday before that is a solid backup. After that, you’re chasing shadows.
Rusty out.
Short Range ForecastHeavy rain (total 82mm), heaviest during Sun afternoon. Warm (max 27°C on Mon morning, min 23°C on Sun morning). Winds decreasing (fresh winds from the NE on Sun afternoon, calm by Mon afternoon). | Days 4-6 Weather SummaryHeavy rain (total 36mm), heaviest during Wed morning. Warm (max 28°C on Wed morning, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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) | E 9 | E 10 | E 8 | SE 9 | SE 9 | S 10 | S 10 | S 10 | S 9 | SSE 9 | SSE 9 | SE 8 | SE 8 | SSE 8 | SE 7 | SE 9 | SSE 8 | SSE 8 | E 13 | E 14 | S 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1526 | 2058 | 762 | 491 | 304 | 156 | 349 | 600 | 606 | 1069 | 591 | 206 | 119 | 88 | 86 | 118 | 140 | 107 | 88 | 89 | 216 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | glassy | cross-on | on | on | on | cross-on | glassy | cross-on | cross-on | on | on | on | on | cross-on | on | on | cross-on |
High Tide | 3:35PM1.46m | 1:18AM1.44m | 4:20PM1.58m | 2:55AM1.54m | 4:53PM1.68m | 3:59AM1.68m | 5:22PM1.76m | 4:50AM1.80m | 5:48PM1.81m | 5:34AM1.87m | 6:14PM1.84m | 6:15AM1.89m | 6:38PM1.84m | ||||||||
Low Tide | 8:35PM1.23m | 8:56AM0.35m | 9:46PM1.08m | 9:56AM0.24m | 10:29PM0.91m | 10:42AM0.17m | 11:05PM0.73m | 11:21AM0.16m | 11:39PM0.57m | 11:56AM0.20m | 00:12AM0.43m | 12:28PM0.29m | 00:44AM0.34m | ||||||||
 | |  |  |  |  |  |  |  | | |  | | | | | |  |  | | | |
 | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — |
 | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — |
mm | 19 | 30 | 14 | — | 1 | — | — | 1 | 17 | 16 | 12 | 4 | 2 | — | — | 1 | 1 | — | — | 1 | 1 |
Temp °C | 24 | 23 | 25 | 27 | 27 | 26 | 27 | 27 | 27 | 28 | 27 | 24 | 25 | 26 | 25 | 26 | 26 | 25 | 27 | 27 | 26 |
Feels °C | 23 | 21 | 25 | 30 | 31 | 28 | 29 | 29 | 31 | 33 | 33 | 29 | 27 | 28 | 27 | 30 | 30 | 28 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SSE 9 | SSE 10 | SE 9 | SE 9 | SE 8 | S 10 | S 10 | S 9 | SSE 9 | SSE 9 | SE 8 | SE 8 | SSE 8 | SE 7 | SE 9 | SSE 8 | SSE 8 | S 8 | S 8 | S 12 |
| kJ | 32 | 96 | 532 | 491 | 304 | 156 | 349 | 600 | 606 | 1069 | 591 | 206 | 119 | 88 | 86 | 118 | 140 | 107 | 86 | 86 | 216 |
Swell 2 Height (m) Direction Period (s) | S 9 | SSW 9 | SSW 9 | E 9 | E 8 | S 10 | ESE 8 | ESE 10 | ESE 10 | E 18 | E 18 | SSW 8 | SSW 8 | ESE 10 | SE 9 | E 15 | E 14 | E 14 | E 13 | E 14 | E 14 |
| kJ | 6 | 8 | 25 | 126 | 80 | 146 | 175 | 39 | 296 | 6 | 6 | 24 | 13 | 35 | 22 | 67 | 60 | 63 | 88 | 89 | 195 |
Swell 3 Height (m) Direction Period (s) | — | SE 13 | — | SW 10 | S 11 | SSW 10 | SE 10 | ESE 10 | E 19 | — | E 18 | E 16 | E 16 | E 15 | SSW 8 | SSW 8 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | S 8 |
| kJ | — | 7 | — | 4 | 82 | 152 | 27 | 40 | 7 | — | 6 | 21 | 21 | 18 | 11 | 11 | 19 | 19 | 19 | 31 | 42 |
Wind waves Height (m) Direction Period (s) | E 9 | E 10 | E 8 | NE 5 | NE 5 | NE 5 | NE 5 | E 8 | NE 5 | NNE 4 | NE 6 | NE 6 | NE 6 | NE 5 | NE 4 | NE 3 | ENE 4 | NE 4 | NE 4 | ENE 4 | ENE 4 |
| kJ | 1526 | 2058 | 762 | 30 | 29 | 51 | 45 | 233 | 79 | 37 | 8 | 99 | 84 | 24 | 13 | 2 | 16 | 16 | 12 | 8 | 10 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 42 | 22 | 22 | 0 | 16 | 22 | 22 | 22 | 22 | 0 | 3 | 16 | 22 | 16 | 16 | 24 | 16 | 22 | 22 | 16 |
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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