Surf Forecasts:
Osaki Point surf forecast from 27 Aug 2026:
- Best quality surf: Thursday 27 Aug, 3PM (local time) - 4.5ft (1.3m), 9s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 2 Sep, 9PM (local time) - 8ft (2.5m), 10s period, SSE swell with 1,375 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 3PM (local time) - 4.5ft (1.3m), 9s period with SSW 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 Thursday (Aug 27) at 3PM. The primary swell is predicted to be 1.3m and 9s period with a secondary swell of 1.1m and 10s. Another secondary swell of 0.4m and 12s is also forecast. 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 2.5m 10s and forecast to arrive on Wednesday (Sep 02) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (Aug 29) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Thu 27th Aug) | 4.5ft (1.3m) 9s |
| Best Surf | 3PM (Thu 27th Aug) | 4.5ft (1.3m) 9s |
| Most Powerful | 9PM (Wed 2nd Sep) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, let’s get into it. The only spot on the radar for the next 16 days is Osaki Point, and it’s a mixed bag to say the least. The water’s sitting at a warm 84.4°, which is a touch warmer than usual for this time of year, so you’ll be comfortable in a spring suit or even just boardies.
The action kicks off Thursday, August 27th, with some morning swell at 4.3 ft from the SSW, period around 10 seconds, and a moderate wave energy of 564 (moderate). The wind is a cross-offshore from the SW at 9 mph, which keeps things clean. It’s not firing, but it’s surfable. The afternoon picks up a bit with a 3/10 call, offshore wind at 12 mph, and the same 4.3 ft SSW swell, but with a shorter 9-second period. The energy dips slightly to 535. It’s the best of the week, but still just a fun session, not a standout.
Friday, August 28th, is smaller with 3.3 ft SSW swell in the morning, period dropping to 8 seconds, and energy at 325 (weak to moderate). Offshore wind from the WSW at 9 mph keeps it clean, but it’s pretty ordinary. Friday afternoon is similar with 3.3 ft from the S, a 7-second period, and 247 energy. Light offshore breeze. Again, just a paddle around.
Saturday and Sunday, August 29th and 30th, are small. Saturday morning has 3.3 ft SSW swell, 8-second period, and 185 energy, with light offshore winds. Afternoon drops to 2.3 ft. Sunday is similar with 3.0 ft and 2.3 ft, both SSW/S, with light offshore or cross-off winds. Wave energy is down to 104-117. It’s weak, but clean.
Monday, August 31st, brings a change. The swell direction shifts to SSE with a 3.6 ft, 10-second period, and 289 energy, but the wind is onshore from the ENE at 6 mph. That’s a no-go. The afternoon gets worse with cross-on winds and a 3.9 ft SSE swell, 11-second period, but the quality is poor. From here, things turn ugly.
Tuesday, September 1st, sees a bigger swell at 6.2 ft to 6.9 ft from the SSE, period 9 seconds, and energy jumping to 671-864 (strong). But the wind is fresh cross-onshore from the E/ESE at 19-22 mph, making it lumpy and poor. Wednesday, September 2nd, is even worse: 7.9 ft to 8.2 ft SSE swell, 10-second period, and energy 1192-1364 (very strong), but with fresh cross-shore winds at 22 mph and lumpy cross-chop. This is getting messy, and with the size over 8 ft, it’s experts only anyway.
Thursday, September 3rd, offers a slight reprieve: 7.5 ft to 8.2 ft SE swell, 9-second period, and massive energy 1455-1498 (very strong). The wind is cross-offshore from the S/SSW at 12-19 mph, so it’s clean. The size is big, but it’s a possible window for experienced surfers willing to handle the juice.
Friday, September 4th, is a write-off with 9.8 ft ESE swell, 10-second period, and 2094 energy, but cross-on winds from the NNE at 16 mph. Messy and dangerous. Saturday, September 5th, has 6.9 ft to 7.2 ft SSW swell, but with a long 12-13 second period, energy 2311-2414, and fresh cross-onshore winds. It’s a groundswell, but the wind ruins it.
Sunday, September 6th, is still marginal with 6.9 ft SSW swell, 9-10 second period, and 1290-1630 energy, but cross-on winds from the N/NE at 9 mph. Not clean enough.
Monday, September 7th, drops to 4.9 ft SSW swell, 9 seconds, and 725 energy, with light cross-on winds. Still ordinary.
Tuesday, September 8th, sees a big jump: 9.8 ft to 11.5 ft SSE swell, 11-second period, energy 2234-2947. The wind is moderate cross-shore from the SE at 16 mph, so there’s chop. This is big, heavy, and only for experts.
Wednesday, September 9th, the swell drops to 3.9
Short Range ForecastLight rain (total 6mm), mostly falling on Fri afternoon. Warm (max 30°C on Thu morning, min 26°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 49mm), heaviest during Tue night. Warm (max 30°C on Sun morning, min 25°C on Sun night). Winds increasing (calm on Sun night, fresh winds from the SE by Tue night). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | SSW 10 | SSW 9 | SSE 9 | SSW 8 | S 7 | S 8 | SSW 8 | S 7 | SSW 7 | SSW 7 | SSW 7 | S 12 | SSE 10 | SSE 11 | SSE 10 | SSE 9 | SSE 9 | SSE 10 | SSE 10 | SSE 10 | SSE 10 |
Wave Graph | |||||||||||||||||||||
302 | 261 | 166 | 125 | 94 | 115 | 110 | 54 | 78 | 76 | 55 | 69 | 250 | 302 | 502 | 599 | 719 | 906 | 1108 | 1280 | 1004 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | off | off | off | off | cross-off | glassy | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off |
High Tide | 6:09PM1.73m | 5:36AM1.78m | 6:30PM1.78m | 6:12AM1.83m | 6:52PM1.81m | 6:48AM1.84m | 7:15PM1.82m | 7:26AM1.80m | 7:39PM1.81m | 8:07AM1.73m | 8:04PM1.78m | 8:53AM1.61m | 8:31PM1.72m | ||||||||
Low Tide | 11:36AM0.21m | 11:50PM0.72m | 12:05PM0.20m | 00:19AM0.60m | 12:34PM0.23m | 00:48AM0.49m | 1:02PM0.31m | 1:20AM0.41m | 1:31PM0.42m | 1:54AM0.35m | 2:01PM0.57m | 2:31AM0.34m | 2:33PM0.75m | ||||||||
5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | |
— | 6:36 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | |
mm | — | 1 | 1 | — | 3 | 1 | — | — | — | — | — | — | — | — | 12 | 6 | 11 | 20 | 9 | 11 | 20 |
Temp °C | 30 | 30 | 27 | 30 | 29 | 27 | 30 | 30 | 27 | 30 | 29 | 27 | 29 | 29 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 33 | 33 | 31 | 32 | 33 | 33 | 32 | 32 | 31 | 33 | 31 | 31 | 31 | 31 | 30 | 28 | 27 | 27 | 27 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSE 10 | SSE 9 | SSE 8 | S 7 | S 8 | E 12 | S 7 | SSW 7 | E 11 | E 11 | S 7 | SSE 10 | SSE 11 | SSE 10 | SSE 9 | E 12 | SSE 10 | SSE 10 | SSE 10 | SSW 11 |
302 | 214 | 158 | 78 | 94 | 115 | 44 | 54 | 78 | 21 | 21 | 39 | 250 | 302 | 502 | 599 | 73 | 906 | 1108 | 1280 | 319 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | E 12 | S 8 | E 13 | E 13 | E 12 | SE 9 | E 12 | E 11 | SE 10 | SE 10 | S 12 | SSW 10 | SW 9 | SW 9 | E 13 | E 12 | E 12 | E 11 | E 11 | E 11 |
194 | 43 | 21 | 85 | 83 | 74 | 14 | 43 | 37 | 17 | 17 | 69 | 18 | 21 | 19 | 53 | 72 | 96 | 84 | 84 | 82 | |
Swell 3 Height (m) Direction Period (s) | E 12 | E 15 | E 11 | SW 10 | SSE 8 | SW 11 | SSE 13 | SSE 9 | SE 11 | SW 8 | SSW 10 | SE 11 | E 11 | E 11 | E 11 | E 10 | — | — | — | — | SSW 16 |
68 | 17 | 37 | 37 | 25 | 18 | 17 | 8 | 19 | 3 | 11 | 40 | 21 | 20 | 9 | 19 | — | — | — | — | 51 | |
Wind waves Height (m) Direction Period (s) | — | SSW 9 | SW 8 | SSW 8 | SW 8 | — | SSW 8 | SW 4 | WSW 4 | SSW 7 | SSW 7 | — | — | — | — | — | SSE 9 | — | — | — | SSE 10 |
— | 261 | 166 | 125 | 45 | — | 110 | 12 | 8 | 76 | 55 | — | — | — | — | — | 719 | — | — | — | 1004 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 22 | 42 | 519 | 497 | 387 | 387 | 387 | 725 |
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.











