Surf Forecasts:
Osaki Point surf forecast from 2 Aug 2026:
- Best quality surf: Tuesday 4 Aug, 9PM (local time) - 15ft (4.5m), 17s period, ESE swell with cross-onshore winds.
- Most powerful swell: Friday 7 Aug, 12AM (local time) - 25ft (7.5m), 17s period, SE swell with 33,966 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 9PM (local time) - 15ft (4.5m), 17s 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 (Aug 04) at 9PM. The primary swell is predicted to be 4.5m and 17s period with a secondary swell of 4.5m and 17s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Osaki Point in the next 16 days are 7.5m 17s and forecast to arrive on Friday (Aug 07) at 12AM. 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+) | 9PM (Tue 4th Aug) | 15ft (4.5m) 17s |
| Best Surf | 9PM (Tue 4th Aug) | 15ft (4.5m) 17s |
| Most Powerful | 12AM (Fri 7th Aug) | 25ft (7.5m) 17s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Yo, Rusty here again. Let’s break down the same forecast for the imperial crew.
Osaki Point is a beach and reef spot that’s exposed to swell, and it’s been a wild ride with a big pulse, but there’s a wait for the clean stuff.
Kicking off August, Monday the 3rd is a bit of a mess. Swell is 5ft to 6ft from the ESE, but the wind is cross-onshore, making it choppy and marginal. The combined swell energy is solid (1395 to 1910), but the conditions are off.
Tuesday the 4th things get serious. The swell jumps to 12ft from the ESE, with a long 16-second period, and the wind is onshore but gentle. The energy is huge (6420), and it’s already pushing into the “too big for this break” zone. Wednesday the 5th is a monster: 16ft to 18ft from the SE, with a 17-second period, and the energy is insane (14683 to 18973). The wind is onshore, but this is expert-only. Thursday the 6th peaks at 25ft from the SE, with an 18-second period, and a fresh to strong breeze (34634 to 35258 energy). It’s huge and wild, but only for the brave.
Friday the 7th stays massive, with 20ft to 18ft swells from the SSE and S, but the wind is strong with thunderstorms. The energy is still crazy (20565 to 16671). Saturday the 8th drops a bit to 16ft to 15ft from the SSW, but the wind is strong and it’s raining – poor conditions. Sunday the 9th and Monday the 10th are similar: big, messy, and not good.
We hit a gap from Monday the 10th through Wednesday the 12th, with the swell dropping to 8ft to 6ft, but the wind is cross-onshore and lumpy. The energy is moderate (3804 to 1502), but it’s marginal.
Now for the standout. Thursday the 13th of August is the real deal. The swell is 6ft from the SSW with a 12-second period, but the wind is glassy – a light 5 km/h (3 mph) breeze from the NE and SE. The conditions are excellent for experienced surfers, with clean, glassy waves. The energy is moderate (1188 to 1042). This is the best window.
Friday the 14th is also good, with 4ft to 5ft from the SSW, glassy conditions, and calm winds. The energy is lower (554 to 455), but it’s clean and fun.
The rest of the window is a mixed bag. Saturday the 15th is poor, Sunday the 16th has a 7ft to 8ft E swell, with glassy conditions in the afternoon – that’s a decent option (996 energy). Monday the 17th and Tuesday the 18th are small and weak, with short-period swells (6-7 seconds) and low energy (391 to 253). Not worth it.
So, the standout is Thursday the 13th of August, with glassy conditions and a clean 6ft SSW swell. It’s a good day for experienced surfers. The water temperature is about average for the time of year. Osaki Point can get crowded sometimes, but on a Thursday morning, you might have a bit more room.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Sun night, min 26°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 39mm), heaviest during Sat morning. Warm (max 30°C on Thu morning, min 26°C on Sat afternoon). Mainly strong winds. | ||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
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 15 | ESE 16 | ESE 16 | ESE 17 | ESE 16 | ESE 17 | ESE 17 | ESE 17 | SE 17 | SE 17 | SE 18 | SE 17 | SE 17 | SSE 16 | S 16 | S 16 | SSW 16 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 706 | 1360 | 1697 | 2895 | 5637 | 5089 | 11243 | 14683 | 18973 | 24966 | 31856 | 33074 | 33966 | 18108 | 13534 | 12204 | 11550 | 10568 | 11908 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | on | on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 8:18AM1.67m | 8:51PM1.72m | 9:03AM1.57m | 9:20PM1.69m | 10:00AM1.46m | 9:53PM1.64m | 11:18AM1.35m | 10:36PM1.58m | 1:19PM1.32m | 11:39PM1.53m | 3:22PM1.41m | 1:12AM1.52m | |||||||
Low Tide | 2:23AM0.61m | 2:31PM0.44m | 3:02AM0.57m | 3:03PM0.60m | 3:48AM0.54m | 3:40PM0.78m | 4:45AM0.52m | 4:27PM0.97m | 6:01AM0.50m | 5:44PM1.14m | 7:34AM0.44m | 7:56PM1.21m | |||||||
 |  |  | | | | | | | | |  |  | | |  | | | | |
 | — | 5:16 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — |
 | 7:01 | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 2 | 2 | 8 | 11 | 12 | 16 |
Temp °C | 30 | 29 | 29 | 27 | 28 | 28 | 27 | 29 | 29 | 28 | 30 | 30 | 29 | 29 | 28 | 27 | 27 | 27 | 26 |
Feels °C | 34 | 31 | 33 | 29 | 29 | 30 | 29 | 29 | 30 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | ESE 15 | ESE 16 | ESE 16 | ESE 17 | ESE 16 | ESE 17 | ESE 17 | ESE 17 | SE 17 | SE 17 | SE 18 | SE 17 | SE 17 | SSE 16 | S 16 | S 16 | SSW 16 | SSW 16 | SSW 16 |
| kJ | 706 | 1360 | 1697 | 2895 | 5637 | 5089 | 11243 | 14683 | 18973 | 24966 | 31856 | 33074 | 31448 | 18108 | 13534 | 12204 | 11550 | 10568 | 11908 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | S 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | ENE 15 | — | — |
| kJ | 14 | 15 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | 21 | — | — |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SSW 8 | S 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 6 | 6 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | E 4 | ESE 6 | E 7 | E 9 | ESE 9 | — | — | — | — | E 10 | E 10 | SE 17 | E 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 |
| kJ | — | 14 | 205 | 358 | 783 | 586 | — | — | — | — | 2778 | 2184 | 33966 | 2457 | 3137 | 2704 | 2372 | 2111 | 1409 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 16 | 22 | 22 | 22 | 22 | 968 | 20 | 22 | 547 | 42 | 425 | 483 | 387 | 534 | 483 | 483 | 534 | 483 | 528 |
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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