Surf Forecasts:
Osaki Point surf forecast from 11 Sep 2026:
- Best quality surf: Monday 14 Sep, 12AM (local time) - 3.5ft (1.0m), 9s period, SE swell with glassy winds.
- Most powerful swell: Friday 18 Sep, 9PM (local time) - 5ft (1.6m), 16s period, SE swell with 1,367 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 12AM (local time) - 1.5ft (0.5m), 14s period with E 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 Sunday (Sep 13) at 12AM. The primary swell is predicted to be 0.5m and 14s period with a secondary swell of 0.6m and 4s. Another secondary swell of 0.9m and 4s 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 1.6m 16s and forecast to arrive on Friday (Sep 18) at 9PM. 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+) | 12AM (Sun 13th Sep) | 1.5ft (0.5m) 14s |
| Best Surf | 12AM (Mon 14th Sep) | 3.5ft (1.0m) 9s |
| Most Powerful | 9PM (Fri 18th Sep) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s break down what’s on offer at Osaki Point for the next couple of weeks. It starts quiet, so be patient.
There’s not much to get excited about until Tuesday the 15th of September. Before that, we’ve got a few days of small, onshore slop with poor conditions. Water temp sits at about 82°F, which is normal for the season.
Tuesday the 15th is your first real call. Morning brings a clean 3.9ft swell from the ESE with a period of 9 seconds, and the wind is glassy – dead calm. The combined energy is moderate (301). It’s a fun, clean day for intermediate surfers. The afternoon stays tidy with 3.6ft waves.
Then it gets rough from the 16th to the 18th. Swell builds but winds stay onshore, making a mess of things. By Saturday the 19th, the swell jumps to 9.8ft from the SE, but onshore winds ruin the quality. This is more of a kite-surfing day than a paddle-surfing day.
Now, the big stuff. Thursday the 24th of September is a standout. Morning brings an 8.2ft SE groundswell with a 16-second period, plus moderate offshore winds from the SW. Energy is very strong (5787), and conditions are exceptional for experts. Afternoon is even better – same swell, cleaner offshore winds, and energy climbing to 7386.
Friday the 25th of September is the main event. Glassy conditions in the morning with a 14.8ft SE groundswell at 16 seconds. Energy is massive at 11233. Afternoon stays huge and clean with cross-offshore winds. This is heavy, powerful groundswell – point and reef breaks will be firing. Not for beginners.
Saturday the 26th still has a 18.0ft monster in the morning (energy of 14883), but onshore winds make it messy. Only for the brave.
The second week is where the gold is. Long-range, but looking real promising.
Short Range ForecastModerate rain (total 10mm), heaviest on Fri afternoon. Warm (max 28°C on Sun morning, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 32mm), heaviest during Mon night. Warm (max 28°C on Mon afternoon, min 23°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
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) | SSE 7 | S 7 | E 14 | E 14 | E 14 | E 13 | ESE 13 | SE 9 | ESE 8 | ESE 8 | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 186 | 127 | 89 | 91 | 96 | 85 | 253 | 148 | 147 | 123 | 190 | 236 | 203 | 165 | 124 | 121 | 119 | 96 | 99 | 56 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | glassy | glassy | cross | glassy | on | cross-off | cross-off | glassy | glassy | glassy | on | glassy | glassy | on | on | on |
High Tide | 6:14PM1.84m | 6:15AM1.89m | 6:38PM1.84m | 6:54AM1.86m | 7:00PM1.83m | 7:32AM1.78m | 7:22PM1.79m | 8:09AM1.67m | 7:44PM1.73m | 8:48AM1.54m | 8:04PM1.66m | 9:33AM1.40m | 8:25PM1.57m | |||||||
Low Tide | 00:12AM0.43m | 12:28PM0.29m | 00:44AM0.34m | 12:58PM0.42m | 1:15AM0.29m | 1:25PM0.57m | 1:47AM0.29m | 1:50PM0.72m | 2:19AM0.34m | 2:13PM0.86m | 2:54AM0.42m | 2:34PM1.00m | ||||||||
 |  |  | |  | |  | | |  | | |  |  | | | | | | | |
 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — |
 | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | 6:12 | — | — | 6:09 | — | — | 6:08 | — | — | 6:07 | — |
mm | 1 | — | — | 2 | 4 | — | — | 3 | — | 1 | 11 | 1 | 2 | 2 | 3 | 4 | 6 | 2 | 3 | 12 |
Temp °C | 26 | 25 | 26 | 26 | 26 | 28 | 28 | 26 | 28 | 28 | 25 | 25 | 24 | 24 | 26 | 26 | 25 | 26 | 25 | 24 |
Feels °C | 28 | 28 | 28 | 29 | 31 | 32 | 32 | 31 | 31 | 31 | 28 | 29 | 29 | 28 | 30 | 30 | 30 | 27 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | S 7 | S 7 | S 7 | E 4 | ESE 9 | ESE 13 | SE 9 | ESE 8 | ESE 8 | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 |
| kJ | 186 | 127 | 59 | 33 | 13 | 53 | 253 | 148 | 147 | 123 | 190 | 236 | 203 | 165 | 124 | 121 | 119 | 96 | 99 | 56 |
Swell 2 Height (m) Direction Period (s) | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | SSW 7 | E 13 | E 13 | E 12 | E 12 | E 12 | E 14 | E 13 | E 14 | E 13 | E 13 | E 12 | E 12 | E 12 |
| kJ | 60 | 63 | 89 | 91 | 96 | 85 | 9 | 83 | 52 | 72 | 71 | 47 | 57 | 87 | 99 | 52 | 53 | 26 | 25 | 25 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 10 | SE 10 | ESE 10 | S 7 | S 7 | SE 9 | S 7 | SSW 7 | S 7 | S 7 | E 15 | S 6 | S 7 | S 6 | S 7 | S 7 | S 7 | S 7 | SSE 9 |
| kJ | 10 | 19 | 24 | 37 | 23 | 22 | 13 | 3 | 5 | 4 | 4 | 17 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
Wind waves Height (m) Direction Period (s) | ENE 4 | E 5 | ENE 4 | E 5 | SE 4 | — | ENE 6 | — | — | — | — | NNE 3 | — | NE 4 | NE 4 | NE 3 | — | NE 4 | NE 4 | NE 4 |
| kJ | 24 | 13 | 10 | 11 | 31 | — | 7 | — | — | — | — | 1 | — | 11 | 5 | 3 | — | 12 | 16 | 22 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 22 | 16 | 22 | 22 | 0 | 0 | 20 | 0 | 16 | 0 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 22 | 22 | 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.
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