Surf Forecasts:
Osaki Point surf forecast from 3 Sep 2026:
- Best quality surf: Thursday 10 Sep, 12PM (local time) - 3ft (0.9m), 8s period, SE swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 12AM (local time) - 15ft (4.5m), 11s period, E swell with 4,422 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 12PM (local time) - 3ft (0.9m), 8s 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 Thursday (Sep 10) at 12PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.4m and 8s. Another secondary swell of 0.7m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Osaki Point in the next 16 days are 4.5m 11s and forecast to arrive on Monday (Sep 07) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 7s period and expected on Friday (Sep 04) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 10th Sep) | 3ft (0.9m) 8s |
| Best Surf | 12PM (Thu 10th Sep) | 3ft (0.9m) 8s |
| Most Powerful | 12AM (Mon 7th Sep) | 15ft (4.5m) 11s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at what’s coming up for Osaki Point. Let’s be straight with you—this stretch looks rough. The wind is stubbornly onshore or cross-onshore from the northeast for days on end, and the sea state is described as "poor surf conditions" for most of the first week. The combined energy of all swells is moderate to strong, with values like 610 to 2048, but with that wind direction, it’s just messy. There’s a brief window of interest around Wednesday the 9th, where the swell picks up to 8ft to 10ft from the SSE, with a 10-second period, and the wind eases to a light breeze. The forecast says "marginal" but there’s a chance of clean-ish conditions if the wind stays light. The crowd factor is "sometimes" here, so it won’t be a circus. Still, the water temp is about average for the time of year, nothing weird.
After that, the swell drops and the onshore winds come back. The second week is a write-off—small, weak energy (values like 40 to 112), and mostly onshore wind. There’s a tiny glimmer on Thursday the 17th, with glassy conditions and a 3ft E swell, but the period is a short 6 seconds, so it’ll be weak and lumpy. Honestly, the best call is Wednesday the 9th, early morning. If you’re an intermediate surfer, that 8ft SSE swell with light wind is your best bet. Don’t get your hopes up for the rest.
Rusty.
Short Range ForecastHeavy rain (total 124mm), heaviest during Fri afternoon. Warm (max 27°C on Sun morning, min 21°C on Fri afternoon). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 71mm), heaviest during Mon night. Warm (max 27°C on Wed morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | S 10 | S 10 | SSW 10 | E 7 | SSW 9 | E 7 | E 9 | E 10 | E 11 | E 10 | SE 9 | S 11 | S 11 | SE 10 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SSE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 600 | 484 | 331 | 311 | 218 | 428 | 1320 | 2068 | 4422 | 484 | 266 | 146 | 178 | 334 | 314 | 199 | 186 | 132 | 107 | 82 | 36 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off |
High Tide | 11:17AM1.34m | 9:44PM1.55m | 1:51PM1.33m | 11:02PM1.45m | 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 | ||||||||
Low Tide | 3:51PM1.11m | 5:38AM0.48m | 5:36PM1.26m | 7:29AM0.46m | 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 | ||||||||
 |  |  |  | |  |  |  |  |  | |  | | | | | | | | |  | |
 | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — |
 | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | — | 6:16 | — |
mm | 13 | 73 | 33 | — | — | 4 | — | 1 | — | 10 | 8 | 15 | 4 | 2 | 8 | 4 | 3 | 17 | 14 | 8 | 15 |
Temp °C | 26 | 22 | 23 | 25 | 26 | 25 | 27 | 26 | 26 | 24 | 24 | 24 | 25 | 26 | 26 | 27 | 26 | 26 | 25 | 26 | 27 |
Feels °C | 28 | 21 | 23 | 24 | 26 | 24 | 26 | 25 | 26 | 23 | 25 | 24 | 26 | 29 | 28 | 30 | 29 | 27 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SW 9 | E 11 | E 10 | SE 9 | SE 8 | SE 8 | SE 10 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SSE 7 |
| kJ | 600 | 484 | 331 | 271 | 218 | 119 | 45 | 21 | 2802 | 484 | 266 | 136 | 138 | 334 | 314 | 199 | 186 | 132 | 107 | 82 | 36 |
Swell 2 Height (m) Direction Period (s) | E 10 | SE 9 | SSE 8 | E 16 | — | E 13 | — | SSE 10 | SE 9 | SE 9 | S 11 | S 11 | S 11 | S 11 | S 10 | S 9 | S 9 | S 8 | S 8 | SSW 8 | SSW 8 |
| kJ | 47 | 14 | 47 | 5 | — | 3 | — | 10 | 120 | 382 | 58 | 146 | 178 | 227 | 158 | 106 | 81 | 52 | 34 | 22 | 19 |
Swell 3 Height (m) Direction Period (s) | — | SE 9 | SE 9 | E 16 | — | — | — | — | SSW 9 | SSW 10 | SSW 10 | SSW 11 | NE 6 | NE 6 | NE 6 | E 18 | SSE 11 | E 16 | E 16 | E 15 | SE 9 |
| kJ | — | 14 | 12 | 5 | — | — | — | — | 8 | 10 | 10 | 44 | 44 | 20 | 26 | 6 | 12 | 21 | 20 | 18 | 22 |
Wind waves Height (m) Direction Period (s) | NE 4 | NE 6 | ENE 6 | E 7 | E 7 | E 7 | E 9 | E 10 | E 11 | NE 6 | ENE 6 | ENE 6 | NNE 6 | NNE 6 | NE 6 | NE 4 | ENE 5 | NE 5 | NE 5 | ENE 4 | ESE 5 |
| kJ | 15 | 237 | 258 | 311 | 193 | 428 | 1320 | 2068 | 4422 | 164 | 197 | 123 | 151 | 65 | 61 | 12 | 28 | 40 | 30 | 8 | 31 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 30 | 22 | 22 | 22 | 16 | 22 | 22 | 22 | 22 | 22 | 22 | 16 | 20 | 0 |
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.
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