
Surf Forecasts:
Osaki Point surf forecast from 30 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 6AM (local time) - 16ft (5.0m), 18s period, ESE swell with onshore winds.
- Most powerful swell: Thursday 6 Aug, 9AM (local time) - 28ft (8.5m), 17s period, SE swell with 40,203 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 9PM (local time) - 1.5ft (0.4m), 9s 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 Thursday (Jul 30) at 9PM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.5m and 5s. 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 8.5m 17s and forecast to arrive on Thursday (Aug 06) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Thursday (Jul 30) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 30th Jul) | 1.5ft (0.4m) 9s |
| Best Surf | 6AM (Wed 5th Aug) | 16ft (5.0m) 18s |
| Most Powerful | 9AM (Thu 6th Aug) | 28ft (8.5m) 17s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk about the surf coming up.
We’ve got a strange run ahead at Osaki Point. The first few days are small and a bit ordinary, but then it builds into a serious, dangerous swell. The real standout is the glassy session on Sunday the 2nd of August—that’s the one to circle.
The water is sitting at 85°F right now, which is much warmer than usual for this time of year. Feels like a bath out there.
For the immediate days, Thursday the 30th of July afternoon is tiny—1 ft from the ESE, period at 9 seconds, and a light cross-off wind. Combined energy is weak (55), so it’s just a fun little paddle. Not worth getting excited about.
Friday the 31st of July morning is glassy, with 1.0 ft from the SE, period stretching to 12 seconds. That’s a long period for such a small wave, so it’ll be clean but small. Combined energy is still low (52). Friday afternoon goes cross and stays tiny.
Saturday the 1st of August is a write-off—cross-on wind, poor conditions, small swell.
Now here’s the standout: Sunday the 2nd of August. Morning starts glassy with 2 ft from the ESE, period 18 seconds—that’s a very long period groundswell for a small wave. Combined energy jumps to 403 (moderate). The afternoon gets even better: glassy, 4 ft from the ESE, period 16 seconds, combined energy 737 (moderate). These are clean, long-period waves. Because it’s a beach and reef setup, those long intervals can make the waves a bit straight at the beach, but the reef sections should handle them nicely. Winds are light and glassy—this is the best on offer.
Monday the 3rd of August gets bigger, but the wind shifts onshore. 6 ft in the morning from the ENE at 15 mph, then 7 ft in the afternoon with cross-on wind. The swell is solid, but the quality drops. This is getting into the too-big-for-beginners zone.
Tuesday the 4th of August is 10 ft plus, with onshore winds and a risk of thunderstorms. The energy is massive (6036 to 7490), but the wind and chop make it more of a kite-surfing setup than a clean paddle.
From Wednesday the 5th through Friday the 7th of August, it’s huge—18 ft to 28 ft—with strong onshore winds. The combined energy hits 78,758 on Thursday morning. This is for experts only, and even then, the wind is a problem. The break is too big and messy for most.
The second week sees a drop in size but more mediocre conditions. Saturday the 8th of August has 8 ft but with onshore wind and storms. Sunday the 9th is 5 ft and still marginal. The rest of the week into the 14th stays small, with short period (8 seconds) and cross-on winds. Combined energy drops to the hundreds. Nothing to plan a trip around.
So, bottom line: Sunday the 2nd of August is your best shot—small but clean, glassy, and long-period. The following week is a mix of blown-out big stuff and then small, choppy leftovers.
Rusty.
Short Range ForecastMostly dry. Warm (max 32°C on Sun morning, min 28°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Mon night. Warm (max 32°C on Sun afternoon, min 27°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | ESE 9 | ESE 9 | SE 9 | SE 13 | SE 9 | SE 10 | SE 10 | ESE 16 | ESE 18 | ESE 16 | ESE 15 | ESE 16 | ESE 18 | ESE 17 | ESE 17 | ESE 18 | ESE 17 | SE 18 | SE 18 | SE 18 |
Wave Graph | ||||||||||||||||||||
35 | 35 | 23 | 26 | 23 | 27 | 28 | 49 | 240 | 715 | 805 | 1714 | 3032 | 4304 | 5996 | 7392 | 12639 | 18519 | 25875 | 34772 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | glassy | cross | glassy | cross-on | cross | cross-off | glassy | glassy | cross | on | cross-on | on | on | cross-on | on | on | on | on |
High Tide | 7:12PM1.72m | 6:24AM1.77m | 7:36PM1.74m | 7:00AM1.77m | 8:00PM1.74m | 7:38AM1.73m | 8:25PM1.74m | 8:18AM1.67m | 8:51PM1.72m | 9:03AM1.57m | 9:20PM1.69m | 10:00AM1.46m | 9:53PM1.64m | |||||||
Low Tide | 00:44AM0.81m | 1:02PM0.16m | 1:16AM0.74m | 1:31PM0.22m | 1:48AM0.67m | 2:01PM0.31m | 2:23AM0.61m | 2:31PM0.44m | 3:02AM0.57m | 3:03PM0.60m | 3:48AM0.54m | 3:40PM0.78m | ||||||||
— | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:16 | — | — | |
7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | 1 | — | — | — | — |
Temp °C | 31 | 29 | 31 | 31 | 28 | 31 | 31 | 29 | 32 | 32 | 30 | 30 | 30 | 28 | 30 | 30 | 27 | 30 | 30 | 28 |
Feels °C | 34 | 35 | 34 | 35 | 33 | 33 | 34 | 33 | 37 | 37 | 34 | 33 | 34 | 33 | 33 | 33 | 31 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | SW 5 | SSW 4 | SSW 6 | SE 9 | SE 10 | SE 10 | ESE 16 | ESE 18 | ESE 16 | ESE 15 | ESE 16 | ESE 18 | ESE 17 | ESE 17 | ESE 18 | ESE 17 | SE 18 | SE 18 | SE 18 |
35 | 11 | 7 | 13 | 23 | 27 | 28 | 49 | 240 | 715 | 805 | 1714 | 3032 | 4304 | 5996 | 7392 | 12639 | 18519 | 25875 | 34772 | |
Swell 2 Height (m) Direction Period (s) | SW 6 | ESE 9 | SE 9 | SE 9 | SSW 5 | SSW 4 | SSW 4 | SE 11 | ESE 14 | SSW 8 | SE 10 | SSW 8 | SSE 9 | — | — | — | — | — | — | — |
9 | 35 | 22 | 21 | 4 | 3 | 1 | 19 | 118 | 7 | 15 | 6 | 17 | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SSW 7 | SE 12 | SE 13 | SE 11 | S 7 | ESE 16 | SW 5 | SE 9 | SSW 8 | SSW 8 | E 14 | — | — | — | — | — | — | — | — |
11 | 5 | 23 | 26 | 20 | 1 | 26 | 3 | 40 | 7 | 6 | 16 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SW 5 | — | — | SW 5 | NNE 2 | — | — | NE 4 | NE 4 | — | E 3 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | — | — | — | — |
— | 22 | — | — | 8 | 1 | — | — | 5 | 8 | — | 8 | 46 | 50 | 40 | 98 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 22 | 0 | 51 | 16 | 556 | 20 | 0 | 0 | 0 | 16 | 51 | 22 | 16 | 69 | 49 | 20 | 42 | 49 | 42 |
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.











