Osaki Point Surf Break

Lat Long: 33.39° N 134.21° E

Osaki Point Surf Forecast and Surf Report

Issued: 8 pm 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Osaki Point sea temperature is
28.3° C
0.5° 

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 19 Aug 2026:

  • Best quality surf: Tuesday 25 Aug, 6PM (local time) - 16ft (5.0m), 17s period, SE swell with onshore winds.
  • Most powerful swell: Wednesday 26 Aug, 12PM (local time) - 25ft (7.5m), 14s period, ESE swell with 21,988 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 3AM (local time) - 1.5ft (0.4m), 10s period with SE 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 (Aug 20) at 3AM. The primary swell is predicted to be 0.5m and 7s period with a secondary swell of 0.4m and 10s. 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 7.5m 14s and forecast to arrive on Wednesday (Aug 26) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 8s period and expected on Wednesday (Aug 26) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 20th Aug)1.5ft (0.4m) 10s
Best Surf 6PM (Tue 25th Aug)16ft (5.0m) 17s
Most Powerful12PM (Wed 26th Aug)25ft (7.5m) 14s

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


The Lowdown

Alright, Rusty here. Let's break down what the ocean’s got lined up for us.

So, the next couple of weeks at Osaki Point have some fun little windows, but then it gets pretty gnarly and blown out. There’s some real good clean swell early on, but you’ll have to wait out some rough weather later.

The action starts small but sweet. Thursday morning we’ve got a flat-calm, glassy ocean with a tiny 1 ft groundswell from the ESE. It’s super small, barely a ripple, but dead clean. The water temp is a balmy 83°, which is pretty normal for this time of year. Friday morning is where you want to get wet. A clean 3 ft swell from the S with glassy winds and moderate energy. That’s a fun little wave for a log or a fish. This pattern holds through the weekend right up to Sunday morning, where the swell nudges up to 4 ft from the SSW at 10 seconds, with the energy building nicely.

Now, the real gem is Monday the 24th of August at sunrise. You don’t want to miss it. We’ve got a 3 ft SE groundswell with a very long period of 16 seconds and strong energy (814). That’s going to push in some beautiful, lined-up waves that will wrap perfectly around the point. With glassy winds, this is the absolute pick of the forecast.

But fair warning... Things go south from Tuesday the 25th. The swell jumps over 8 ft with onshore wind, and by Wednesday the 26th, it’s a full-on 13 to 15 ft of raw, wind-blown energy (11,266) with onshore winds ripping at over 15 mph. That’s a serious, dangerous mess. For experts only, and even then it won't be pretty. The wind stays onshore from the NE and E for days after that, keeping it choppy and blown out. A lot of that time, with the swell over 5 ft and cross-onshore wind, this setup looks more fun for a kite than a paddle.

So, the takeaway: the first weekend and especially Monday morning the 24th are the golden hours. After that, it's a battle against the wind, and the long-range forecasts into early September are all big, raw, and onshore. Keep an eye on it, but don't hold your breath.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Sat afternoon. Warm (max 29°C on Fri afternoon, min 25°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 30°C on Tue afternoon, min 25°C on Sun night). Wind will be generally light.

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
1
2
2
2
2
2
1
2
1
4
3
4
4
6
6
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
ESE
7
0.4
ESE
10
0.4
ESE
10
0.9
S
9
1
S
9
1
S
9
1
S
9
0.9
SSW
9
0.9
SSW
9
0.9
SSW
8
0.8
SSW
9
0.7
SE
15
1.4
SE
17
2.1
SE
16
2.4
SE
16
3
SE
16
4
SE
16
4.5
SE
17
6
SE
16
Wave Graph
Metric surfscale
Energy kJ
43
38
39
126
168
180
165
146
140
101
86
233
1160
2140
3096
4437
7731
12722
16462
Wind (km/h)
0
SW
5
E
10
S
5
W
5
E
10
S
5
W
0
ESE
10
SSW
5
WNW
5
SSE
10
SSE
5
NW
10
ENE
10
SE
10
ENE
15
ENE
15
ENE
35
NE
Wind State
glassy
glassy
cross-off
glassy
glassy
cross-off
off
glassy
cross-off
glassy
glassy
cross
glassy
on
cross-on
on
on
on
on
High Tide
9:25PM1.57m
11:19AM1.24m
9:52PM1.48m
2:11PM1.21m
10:36PM1.40m
4:23PM1.32m
00:37AM1.34m
4:44PM1.42m
2:32AM1.39m
5:05PM1.52m
3:36AM1.49m
5:26PM1.60m
Low Tide
4:32AM0.59m
3:42PM1.07m
5:43AM0.65m
4:02PM1.20m
7:29AM0.66m
8:20PM1.27m
8:58AM0.58m
9:52PM1.18m
9:53AM0.46m
10:27PM1.07m
10:32AM0.35m
10:56PM0.96m
clear
clear
clear
clear
part cloud
part cloud
clear
clear
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:28
5:28
5:28
5:30
5:31
5:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:44
6:43
6:42
6:40
6:38
6:37
 mm
2
11
Temp °C
26
28
28
26
28
29
26
29
29
27
29
29
26
29
28
26
29
30
28
Feels °C
31
32
32
31
32
33
30
33
32
32
32
33
30
32
31
30
31
32
28
  • Map Icons:
  • Break
  • 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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