Surf Forecasts:
Osaki Point surf forecast from 22 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 3AM (local time) - 10ft (3.0m), 16s period, SE swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 9PM (local time) - 13ft (4.0m), 15s period, SSE swell with 6,721 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 9PM (local time) - 2.5ft (0.8m), 8s period with SSW 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 Saturday (Aug 22) at 9PM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.4m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Osaki Point in the next 16 days are 4.0m 15s and forecast to arrive on Tuesday (Aug 25) 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+) | 9PM (Sat 22nd Aug) | 2.5ft (0.8m) 8s |
| Best Surf | 3AM (Tue 25th Aug) | 10ft (3.0m) 16s |
| Most Powerful | 9PM (Tue 25th Aug) | 13ft (4.0m) 15s |
Table - best surf conditions forecast for Osaki Point over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's cookin' for Osaki Point over the next couple of weeks.
Alright, so we're looking at a bit of a slow start, nothing to get too excited about this weekend. The whole picture is a journey from small, clean but weak surf, into a proper, powerful swell middle of next week, and then a messy, blown-out finish. The real standout is Monday afternoon, the 24th of August, with a solid, clean wave that's going to be one for the experienced crew.
Saturday, August 22nd, afternoon: We're kicking off with some small waves at Osaki Point. It's a beach and reef setup, and the swell is a tiny 2.6 ft from the SSW. The wind is a light cross-off at 6 mph, so the surface is clean, but the energy is weak (144). The water is a warm 83.1°F, which is about average for this time of year. It's surfable, but honestly, it's very ordinary.
Sunday, August 23rd, morning: The morning session is looking glassy. Wind is a dead calm 3 mph from the SW, making it a glassy surface. The swell is still a small 2.6 ft from the SSW. The energy is still weak (157). You'll get a few, but you'll be working for them.
Sunday afternoon: The wind picks up to a cross-off at 9 mph. The swell drops a bit to 2.0 ft. It's clean, but it's a real knee-slapper with energy dropping to 110.
Monday, August 24th, morning: We get a pulse of new energy. The swell comes up to 3.6 ft from the SE, but the period is a short 8 seconds—wind chop, not groundswell. The wind is a light cross from the SE at 3 mph, making for a little bump on the surface. The energy is moderate (958). It's marginal.
Monday, August 24th, afternoon – THE STANDOUT: Now we're talking. This is the best on offer. The swell jumps to 6.2 ft from the SE, with a very long period of 16 seconds. This is proper groundswell, and it's got some serious energy behind it (2070). The wind is a light cross-off from the south at 6 mph, keeping the waves clean. For a beach and reef, a long period like this can make it break a bit straight, but the size and quality look excellent for experienced surfers. This is a proper session.
Tuesday, August 25th, morning: The swell is now a solid 11.5 ft from the SSE, but the wind is coming straight onshore from the east at 6 mph. The energy is very strong (5982), but the onshore wind is going to mess it up. The wave comment says "marginal or questionable tide conditions," so it's a bit of a beast. For experts only, and even then, it's a tough paddle.
Tuesday afternoon: The swell peaks at a massive 13.1 ft from the SSE, with a very long period of 15 seconds. The energy is massive (6540). But again, the wind is onshore from the east. It's going to be a washing machine. This is big, powerful, and messy. Hard pass for anyone but the most experienced looking for a challenge.
Wednesday, August 26th, morning: The swell is still a hefty 11.5 ft from the south, but the onshore wind is now 9 mph. The energy is still very strong (5542). It's still a big, messy, expert-only situation.
Wednesday afternoon: The wind swings to a cross-on, and we get a risk of thunderstorms. The swell is dropping to 9.8 ft with a period of 12 seconds, but it's choppy. Not great.
Thursday, August 27th, through Friday, August 28th: The swell drops into the 8.2 ft to 9.8 ft range. The wind stays cross-off or cross-on, and the energy is still strong. Friday morning looks the best of this stretch, with a clean, cross-off wind and 9.8 ft swell from the south. The energy is solid (1666). It's still a big wave, but the conditions will be much cleaner, making it a good option for experts.
Saturday, August 29th, morning: The swell drops to 5.6 ft from the SSE. The wind is glassy from the SW. The energy is moderate (505). This is a nice, clean, mellow morning session for intermediates.
The week of August 30th to September 6th: The surf gets smaller and more inconsistent. There are a few glimmers – Sunday morning, the 30th, is glassy but tiny at 3.0 ft. The 1st of September has a glassy morning with a 3.3 ft east swell. But then the wind turns onshore from Tuesday onwards, with the swell building again. By the 3rd and 4th of September, we get a strong onshore blow with big swell (7.2 ft to 9.8 ft), leading to poor, messy conditions. The 5th and 6th look like a complete washout with strong onshore winds
Short Range ForecastMostly dry. Warm (max 29°C on Sat afternoon, min 26°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 61mm), heaviest during Thu night. Warm (max 29°C on Tue afternoon, min 25°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sat 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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) | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SE 12 | SE 19 | SE 16 | SE 16 | SSE 15 | SSE 15 | SSE 15 | S 14 | S 12 | S 11 | S 10 | S 10 | S 10 | S 10 | S 9 | SSE 8 |
Wave Graph | ||||||||||||||||||||
103 | 99 | 78 | 48 | 93 | 783 | 1946 | 3622 | 5875 | 6437 | 6625 | 5172 | 2391 | 1363 | 1243 | 1519 | 1784 | 1570 | 923 | 412 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | glassy | cross-off | off | cross | cross-off | glassy | on | on | cross-on | on | cross-on | on | cross-on | cross-on | cross-off | cross-off | cross-off | glassy |
High Tide | 4:23PM1.32m | 00:37AM1.34m | 4:44PM1.42m | 2:32AM1.39m | 5:05PM1.52m | 3:36AM1.49m | 5:26PM1.60m | 4:21AM1.60m | 5:47PM1.67m | 5:00AM1.71m | 6:09PM1.73m | 5:36AM1.78m | 6:30PM1.78m | |||||||
Low Tide | 8:20PM1.27m | 8:58AM0.58m | 9:52PM1.18m | 9:53AM0.46m | 10:27PM1.07m | 10:32AM0.35m | 10:56PM0.96m | 11:06AM0.26m | 11:23PM0.84m | 11:36AM0.21m | 11:50PM0.72m | 12:05PM0.20m | 00:19AM0.60m | |||||||
— | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | |
6:42 | — | — | 6:40 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:34 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 4 | 2 | 4 | 4 | 7 | 7 | 26 | 7 | 7 | — |
Temp °C | 29 | 27 | 29 | 29 | 27 | 29 | 28 | 26 | 29 | 29 | 27 | 29 | 29 | 26 | 27 | 27 | 26 | 26 | 27 | 26 |
Feels °C | 32 | 31 | 33 | 32 | 32 | 33 | 32 | 31 | 32 | 32 | 32 | 32 | 32 | 29 | 30 | 31 | 28 | 30 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SW 8 | SE 19 | SE 16 | SE 16 | SSE 15 | SSE 15 | SSE 15 | S 14 | S 12 | S 11 | S 10 | S 10 | S 10 | S 10 | S 9 | SSE 8 |
103 | 99 | 78 | 48 | 57 | 783 | 1946 | 3622 | 5875 | 6437 | 6625 | 5172 | 2391 | 1363 | 1243 | 1519 | 1784 | 1570 | 923 | 412 | |
Swell 2 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | S 8 | SE 12 | SE 12 | SSW 8 | SSE 19 | E 15 | E 14 | E 14 | E 13 | SE 9 | E 12 | SSW 11 | SW 11 | E 11 | E 13 | SW 12 | SW 10 |
31 | 31 | 49 | 33 | 93 | 134 | 51 | 1981 | 107 | 103 | 89 | 84 | 388 | 73 | 211 | 31 | 38 | 88 | 72 | 73 | |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 13 | SE 11 | E 10 | S 8 | SW 9 | E 12 | E 12 | — | — | — | — | E 13 | E 18 | E 12 | E 12 | E 14 | SE 15 | E 13 | E 13 |
10 | 35 | 30 | 29 | 22 | 41 | 73 | 44 | — | — | — | — | 82 | 6 | 44 | 43 | 37 | 8 | 85 | 82 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SE 10 | — | SE 9 | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | 286 | — | 300 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 22 | 49 | 20 | 22 | 22 | 20 | 22 | 16 | 20 | 0 | 0 | 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.











