Osaki Point Surf Break

Lat Long: 33.39° N 134.21° E

Osaki Point Surf Forecast and Surf Report

Issued: 8 pm 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Osaki Point sea temperature is
28.4° C
0.7° 

Osaki Point surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Osaki Point surf forecast from 16 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 6PM (local time) - 4.5ft (1.4m), 11s period, S swell with cross-offshore winds.
  • Most powerful swell: Friday 21 Aug, 12AM (local time) - 5ft (1.6m), 11s period, S swell with 610 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 9PM (local time) - 3ft (0.9m), 7s 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 Wednesday (Aug 19) at 9PM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.9m and 5s 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 11s and forecast to arrive on Friday (Aug 21) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Aug 23) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Wed 19th Aug)3ft (0.9m) 7s
Best Surf 6PM (Thu 20th Aug)4.5ft (1.4m) 11s
Most Powerful12AM (Fri 21st Aug)5ft (1.6m) 11s

Table - best surf conditions forecast for Osaki Point over the next 16 days.


The Lowdown

Alright, this is Rusty. Let's talk about what’s on the table for Osaki Point. I'm looking at the next couple of weeks, and if I'm being straight with you, the first week and a half is a flat, frustrating wait. We've got a stretch from August 17th right through to the 22nd where the surf is just not cooperating—poor conditions, choppy wind, and hardly any push. It's the kind of run that makes you want to hang the board up for a bit if you don't know what's coming.

Things start to shift a little around Saturday the 22nd. We get some cleaner conditions with a light cross-offshore breeze from the S and SSW, but the swell is still small, around 3.9 ft to 4.3 ft, and the energy is pretty moderate (341). It's not a standout, but it's a sign that the ocean is waking up.

Then, Sunday the 23rd is where it gets interesting. The wind turns offshore from the WSW, and while the swell isn't huge at 3.9 ft to 4.3 ft from the SSW, the energy picks up (338-345) and the forecast says "expect good surf conditions." This is a solid, clean window. The offshore breeze will keep the faces smooth, and for a consistent break like Osaki Point, that's a real treat. It's the first true bright spot.

But the real story... the one that has me pacing... is the last few days of August and the first day of September. We’ve got a massive groundswell arriving late in the month. It's an SSE to SE swell with very long periods, 15 to 17 seconds—that's pure oceanic energy. The combined energy numbers are staggering, ranging from 2650 up to 11857. Huge.

Sunday the 29th of August morning stands out. We get offshore wind from the WSW, a solid 13.1 ft SSE swell with a period of 14 seconds, clean conditions, and the report says "exceptional surf for expert surfers." This is the one to circle. The energy is 6512, which is massive. Keep in mind, with that long period and that size, it’s best suited for the point setup here—the reef and structure will handle it well, whereas a beach break at this size and period can get unruly. This is strictly for experienced surfers; beginners should sit this one out. Crowds are possible here, especially on a Sunday with a swell this good, but it's worth it.

And then, on Monday the 31st of August afternoon, we’ve got another huge push, 13.1 ft from the ESE with a 15-second period, cross-shore winds, and the energy reading hits 11857. That one is special. Both the 29th and the 31st are top-tier windows for those who know what they're doing.

So, to wrap it: the first week is a write-off. The best on offer is that clean offshore day on Sunday the 23rd for intermediate fun, and the absolute standout is the massive, expert-only groundswell on Saturday the 29th and Monday the 31st. September 1st continues the trend with 16.4 ft from the E, but the wind is onshore, which puts a bit of a dampener on it.

That’s the read from here.

Short Range Forecast

Moderate rain (total 11mm), heaviest on Sun night. Warm (max 28°C on Mon morning, min 25°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 40mm), heaviest during Sat morning. Warm (max 28°C on Thu morning, min 26°C on Wed night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
0
0
0
0
0
1
0
1
2
1
1
2
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
ESE
6
1.1
ESE
9
1
ESE
9
0.9
ESE
9
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.8
ESE
8
0.9
ESE
8
0.9
ESE
5
0.8
S
9
1.1
S
9
1.6
S
11
1.5
S
11
1.4
SSW
10
1.3
SSW
10
1.3
SSW
10
1.2
SSW
9
1.2
SSW
9
Wave Graph
Metric surfscale
Energy kJ
131
203
154
113
101
96
96
87
104
37
99
180
610
514
410
342
289
237
237
Wind (km/h)
15
ESE
10
ESE
10
SE
10
E
10
E
10
ESE
5
NE
10
ESE
10
SE
0
E
5
ESE
10
SSE
5
SSE
10
SE
10
SSE
5
SW
15
S
15
SW
15
WSW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross
glassy
cross-on
cross
cross
cross-on
cross
glassy
cross-off
cross-off
off
High Tide
8:31AM1.66m
8:39PM1.71m
9:15AM1.51m
9:02PM1.65m
10:05AM1.37m
9:25PM1.57m
11:19AM1.24m
9:52PM1.48m
2:11PM1.21m
10:36PM1.40m
4:23PM1.32m
00:37AM1.34m
Low Tide
2:25AM0.47m
2:30PM0.57m
3:02AM0.48m
2:55PM0.76m
3:43AM0.53m
3:19PM0.92m
4:32AM0.59m
3:42PM1.07m
5:43AM0.65m
4:02PM1.20m
7:29AM0.66m
8:20PM1.27m
rain showers
rain showers
clear
rain showers
part cloud
part cloud
clear
thunderstorm
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:26
5:26
5:28
5:28
5:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:49
6:47
6:45
6:45
6:44
6:43
6:42
 mm
7
1
2
1
1
4
5
5
6
6
7
6
3
Temp °C
26
28
28
26
28
28
26
28
28
26
28
28
27
27
27
27
27
27
27
Feels °C
28
31
31
30
30
31
31
32
32
32
33
32
33
31
30
32
30
30
31
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Osaki Point:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Osaki Point surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest