Osaki Point Surf Break

Lat Long: 33.39° N 134.21° E

Osaki Point Surf Forecast and Surf Report

Issued: 8 pm 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's Osaki Point sea temperature is
27.7°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 14 Sep 2026:

  • Best quality surf: Tuesday 22 Sep, 12AM (local time) - 18ft (5.5m), 15s period, SSE swell with onshore winds.
  • Most powerful swell: Tuesday 22 Sep, 3AM (local time) - 21ft (6.5m), 15s period, SSE swell with 16,800 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 15 Sep, 9AM (local time) - 4.5ft (1.4m), 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 Tuesday (Sep 15) at 9AM. The primary swell is predicted to be 1.4m and 9s period with a secondary swell of 0.3m and 14s. 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 6.5m 15s and forecast to arrive on Tuesday (Sep 22) at 3AM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Tue 15th Sep)4.5ft (1.4m) 9s
Best Surf12AM (Tue 22nd Sep)18ft (5.5m) 15s
Most Powerful 3AM (Tue 22nd Sep)21ft (6.5m) 15s

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


The Lowdown

Right, let’s talk about this stretch of coast. For the next two and a bit weeks, the swell window is definitely open, but the wind is going to be the main character – and honestly, it’s often going to be a pain. We’ve got a major player arriving, but holding it together will be the real challenge. The best surf on offer? It’s a narrow window with a big, powerful swell, but the conditions to ride it might only be there for the brave.

We start on Tuesday the 15th. Osaki Point (Osaki-Point) is glassy first thing with a clean, 5 ft ESE swell running at a moderate 9-second period. Combined energy is moderate (375). The water temp is about normal for this time of year. Tuesday morning is setup for some genuinely fun, clean waves. Tuesday afternoon holds that glassy wind with a slightly smaller 4 ft swell – still a good session.

Then it gets ugly. Wednesday the 16th through to Thursday the 17th is a write-off. The wind swings onshore and picks up, dropping the swell to under 3 ft and making a mess of things. That’s three days of poor surf before we see any hope.

Friday the 18th is a tease. The swell jumps up to 8 ft from the east (9-10 second period), and the combined energy climbs dramatically (1802-2458). But the wind is onshore, making it choppy. It’s big and messy – marginal for anyone. Saturday the 19th is where the real power shows up with a 13 ft, 15-second groundswell from the ESE. That’s a very long-period, serious groundswell. The combined energy is huge (6756), but the wind is onshore again and building. That Saturday morning session is for experts only; the period is so long it’ll be walling up and will need a reef or point to handle it, but here it’s a beach-and-reef mix with a cross-onshore breeze. This looks more like a kite-surfing setup than clean paddle surfing.

Sunday the 20th and Monday the 21st keep that massive swell train going – 13 ft to 15 ft with a 14-second period and even higher energy (over 8200). But it’s accompanied by a fresh onshore wind. It’s just too lumpy and messy for a safe, fun paddle.

The true standout, the one that’s worth paying attention to, is Tuesday the 22nd of September. We’ve got a beast of a swell: 38 ft from the SE with a 15-second period. The combined energy is a staggering 62573. The file says the wind and tide are favorable, but the swell is predicted to be too big for this break. That is an honest heads-up. The wind is cross-onshore at 30 km/h. For the absolute top-tier big-wave expert, this is the window. For everyone else, it’s a spectacle, not a session. Later that afternoon it drops to 23 ft, still enormous.

After that, the swell fades fast. Wednesday the 23rd has a gale warning with 70 km/h winds, making it dangerous and unrideable. From Thursday the 24th all the way to the end of the period on the 30th, the swell drops way down (under 7 ft, mostly under 5 ft) but the wind stays onshore. There’s a gap of steady, poor conditions for about a week. The only other bump in energy comes on the 28th and 29th (6 ft to 8 ft from the south, 14 sec period), but that’s still blown out with a fresh breeze. Not worth the paddle given the wind. That Tuesday the 22nd is it – a true, wild standout, but not for the faint of heart.

Rusty.

Short Range Forecast

Heavy rain (total 46mm), heaviest during Wed morning. Warm (max 27°C on Tue afternoon, min 20°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 28°C on Sun afternoon, min 22°C on Thu night). Wind will be generally light.

Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
2
0
0
0
0
0
0
2
1
1
4
4
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
SE
9
1.4
ESE
9
1.3
ESE
9
1.2
ESE
9
0.9
ESE
9
0.9
ESE
9
0.8
ESE
9
0.7
ESE
9
1.1
NE
6
2.3
E
8
2.5
E
9
2.5
E
10
2.2
ESE
15
4
ESE
15
4
ESE
14
4.5
ESE
16
4.5
SE
14
4.5
SE
14
4
SSE
14
Wave Graph
Metric surfscale
Energy kJ
247
327
276
211
138
121
101
68
77
665
1122
1327
2098
6756
6444
9873
8233
8224
6271
Wind (km/h)
5
N
5
NNE
5
ENE
10
NE
15
NE
15
NNE
15
N
20
NNE
25
NE
15
NNE
15
NE
15
E
10
NNE
15
NE
20
NE
25
NE
25
NE
25
ENE
20
NE
Wind State
cross-on
glassy
glassy
cross-on
on
cross-on
cross-on
cross-on
on
cross-on
on
on
cross-on
on
cross-on
cross-on
cross-on
on
cross-on
High Tide
8:09AM1.67m
7:44PM1.73m
8:48AM1.54m
8:04PM1.66m
9:33AM1.40m
8:25PM1.57m
10:38AM1.27m
8:46PM1.48m
2:00PM1.23m
9:11PM1.37m
3:53PM1.33m
11:46PM1.27m
Low Tide
1:47AM0.29m
1:50PM0.72m
2:19AM0.34m
2:13PM0.86m
2:54AM0.42m
2:34PM1.00m
3:37AM0.53m
2:52PM1.12m
4:40AM0.64m
2:36PM1.23m
6:34AM0.69m
8:55PM1.25m
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:45
5:46
5:47
5:47
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:09
6:08
6:07
6:06
6:05
6:04
 mm
3
3
3
17
20
Temp °C
25
26
27
25
24
23
22
26
26
22
26
26
24
26
26
25
27
28
26
Feels °C
29
30
32
28
26
25
21
23
23
21
26
26
26
26
25
24
27
28
26
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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