Surf Forecasts:
Osaki Point surf forecast from 31 Aug 2026:
- Best quality surf: Monday 7 Sep, 12PM (local time) - 8ft (2.5m), 11s period, E swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 3PM (local time) - 8ft (2.5m), 12s period, E swell with 1,794 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 3AM (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 Tuesday (Sep 01) at 3AM. The primary swell is predicted to be 0.5m and 14s period with a secondary swell of 0.7m and 9s. 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 2.5m 12s and forecast to arrive on Monday (Sep 07) at 3PM. 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+) | 3AM (Tue 1st Sep) | 1.5ft (0.5m) 14s |
| Best Surf | 12PM (Mon 7th Sep) | 8ft (2.5m) 11s |
| Most Powerful | 3PM (Mon 7th Sep) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s cooking for the next couple of weeks.
Right off the bat, I gotta be honest with you: the first week is a tough slog. From the 1st of September through to the 7th, it’s a real mixed bag of onshore winds and messy conditions. There’s surf around, sure, but the wind’s just not playing ball. We’re looking at a stretch of days where the waves are either too weak and chopped up, or the swell is getting hammered by cross-onshore breezes. It’s not a write-off, but you’d be fighting a losing battle for anything clean.
The standout of the whole forecast, and I mean the one to circle on the calendar, is Tuesday the 8th of September. Early morning at Osaki Point, we’re getting a gorgeous 6ft swell from the east, with a solid 10-second period – that’s a nice, workable groundswell. The real winner here is the wind: glassy. Dead flat. That’s the kind of morning you wake up early for. The combined energy is sitting at a solid 1118, so there’s plenty of push. This is the best on offer, no question. The afternoon cleans up too, with a light cross-offshore breeze and 6ft waves, but the morning is the prize.
After that, things get big but tricky. By the 10th of September, we’ve got a serious pulse of swell – 12ft to 15ft from the southeast with a long 14-15 second period. That’s proper heavy groundswell, with combined energy readings of 4917 to 6925 – strong stuff. But the wind is cross-onshore and choppy, so this is only for experts who know the lineup. The setup at Osaki Point, being a beach and reef, might actually be more interesting for the kite crowd on those days than paddle surfers.
Then, on the 12th of September, another standout window appears. Saturday afternoon sees a clean 12ft southeast swell, but this time the wind goes cross-offshore and light. That’s a solid combo for experienced surfers, and the combined energy is a hefty 3668. If you’ve got the skills, that’s your session for the second week.
After that, the 13th and beyond fade back into onshore winds and choppier conditions, with the swell dropping back down to the 6ft to 7ft range. Nothing to get too excited about there.
Water temp is about average for the time of year, so no surprises there.
So, to sum it up: Tuesday the 8th of September morning is your gold star moment – glassy, clean, and a solid chest-high swell. The 12th of September afternoon is the back-up for the big-wave crew. The rest? Pick your windows carefully and don’t expect perfection.
Rusty.
Short Range ForecastHeavy rain (total 29mm), heaviest during Wed night. Warm (max 29°C on Tue morning, min 24°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 171mm), heaviest during Fri night. Warm (max 28°C on Sat afternoon, min 21°C on Fri night). Mainly strong winds. | ||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 9 | E 13 | E 12 | S 8 | SSE 8 | SSE 9 | SSE 8 | SE 8 | SSE 10 | S 10 | S 9 | E 8 | E 8 | E 8 | E 9 | E 8 | E 9 | E 9 | E 10 |
Wave Graph | |||||||||||||||||||
101 | 130 | 113 | 145 | 160 | 243 | 217 | 154 | 328 | 479 | 473 | 258 | 249 | 277 | 421 | 870 | 1121 | 1138 | 1346 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | on | on |
High Tide | 8:07AM1.73m | 8:04PM1.78m | 8:53AM1.61m | 8:31PM1.72m | 9:51AM1.47m | 9:03PM1.65m | 11:17AM1.34m | 9:44PM1.55m | 1:51PM1.33m | 11:02PM1.45m | 3:35PM1.46m | 1:18AM1.44m | |||||||
Low Tide | 1:54AM0.35m | 2:01PM0.57m | 2:31AM0.34m | 2:33PM0.75m | 3:16AM0.36m | 3:07PM0.93m | 4:14AM0.42m | 3:51PM1.11m | 5:38AM0.48m | 5:36PM1.26m | 7:29AM0.46m | 8:35PM1.23m | |||||||
— | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | |
6:30 | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — | |
mm | — | — | — | — | — | 2 | 17 | 7 | 3 | 23 | 32 | 35 | 81 | — | — | — | — | — | — |
Temp °C | 27 | 29 | 29 | 27 | 29 | 28 | 27 | 25 | 24 | 24 | 24 | 23 | 23 | 27 | 28 | 24 | 27 | 28 | 25 |
Feels °C | 31 | 32 | 32 | 31 | 32 | 31 | 31 | 28 | 24 | 23 | 24 | 20 | 21 | 24 | 26 | 23 | 26 | 28 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | S 8 | S 8 | S 8 | SSE 8 | SSE 9 | SSE 8 | SE 8 | SSE 10 | S 10 | S 9 | E 8 | SSW 9 | SSW 8 | SSW 9 | SSW 10 | SSW 9 | SE 10 | SE 10 |
101 | 69 | 55 | 145 | 160 | 243 | 217 | 154 | 328 | 479 | 473 | 258 | 121 | 76 | 67 | 54 | 50 | 100 | 180 | |
Swell 2 Height (m) Direction Period (s) | ESE 14 | E 13 | E 12 | E 12 | E 11 | E 11 | E 5 | E 10 | E 10 | E 10 | E 10 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | — | SE 11 | SSW 9 | SSW 9 |
67 | 130 | 113 | 137 | 119 | 119 | 25 | 73 | 73 | 48 | 17 | 240 | 69 | 21 | 10 | — | 19 | 48 | 31 | |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 9 | SE 10 | SE 10 | S 10 | SE 11 | E 11 | S 10 | SE 10 | SW 11 | — | SSW 9 | E 15 | E 16 | — | — | — | — | — |
15 | 22 | 16 | 14 | 51 | 29 | 83 | 51 | 16 | 4 | — | 76 | 4 | 5 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | ENE 5 | ENE 6 | E 6 | E 5 | — | E 4 | E 6 | ENE 5 | E 7 | NNE 5 | E 8 | E 8 | E 9 | E 8 | E 9 | E 9 | E 10 |
— | — | 3 | 12 | 6 | 21 | — | 33 | 49 | 111 | 206 | 39 | 249 | 277 | 421 | 870 | 1121 | 1138 | 1346 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 16 | 20 | 16 | 22 | 49 | 16 | 16 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 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.











