Osaki Point Surf Break

Lat Long: 33.39° N 134.21° E

Osaki Point Surf Forecast and Surf Report

Issued: 2 pm 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's Osaki Point sea temperature is
28.6° C
0.9° 

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 13 Aug 2026:

  • Best quality surf: Friday 14 Aug, 9AM (local time) - 2.5ft (0.8m), 9s period, SSW swell with glassy winds.
  • Most powerful swell: Sunday 16 Aug, 6PM (local time) - 4.5ft (1.4m), 10s period, ESE swell with 356 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 9PM (local time) - 2.5ft (0.8m), 9s 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 Thursday (Aug 13) at 9PM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.5m and 9s. 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 1.4m 10s and forecast to arrive on Sunday (Aug 16) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Thu 13th Aug)2.5ft (0.8m) 9s
Best Surf 9AM (Fri 14th Aug)2.5ft (0.8m) 9s
Most Powerful 6PM (Sun 16th Aug)4.5ft (1.4m) 10s

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


The Lowdown

Gather 'round, crew. The next two weeks at Osaki Point start off a bit slow, with plenty of small, messy conditions and wind against the swell. But don’t tune out – this forecast has a massive shift in store, and the final few days are looking absolutely wild. The water temp is sitting at 84° F, which is about average for this time of year, so no surprises on the thermal front.

Thursday the 13th kicks off with a risk of thunderstorms, a 3 ft SSW swell at 9 seconds, and a cross breeze. It’s pretty poor, honestly, with only 166 combined energy. Nothing to get excited about.

Friday morning the 14th is the first decent window. The wind goes glassy, and you’ve got a clean 2 ft easterly swell at 10 seconds. Combined energy is 224. It’s small, but glassy conditions make it worthwhile for a log or a longboard. Friday afternoon stays clean with a light S cross-off breeze.

Saturday the 15th and Sunday the 16th are largely write-offs with increasing onshore wind and a deteriorating swell. That Sunday morning shows a 5 ft ESE swell but it’s getting hammered by moderate cross-onshore breezes, giving it a combined energy of 453. Choppy, poor conditions.

We see a slight uptick Monday the 17th with a 4 ft ESE swell, but the cross-shore wind still only makes it marginal. Tuesday the 18th and Wednesday the 19th drop right back down, with energy falling below 100 on Wednesday. A real lull.

Thursday the 20th brings a change: a clean, offshore SW wind meets a 3 ft SSE swell at 8 seconds. Combined energy is 155. It’s still ordinary, but at least it’s rideable and clean. Friday the 21st morning goes glassy with a 3 ft SSE swell. More small, clean fun. Friday afternoon gets interesting though – a 3 ft SSW groundswell at 11 seconds rolls in with a light offshore WSW breeze and a combined energy of 296. The longer period will give it some shape, but it’s best on the point here to handle that longer gap between sets.

Saturday the 22nd afternoon is a highlight for the first week: glassy conditions, a 4 ft S swell at 9 seconds, and a combined energy of 377. Clean, fun, small waves.

Now, hold onto your board. Sunday the 23rd is where the outlook goes from average to absolutely bonkers. Sunday morning: a 5 ft SE groundswell with a 15-second period, glassy conditions, and a combined energy of 2102. This is for experienced surfers. Sunday afternoon jumps to an 8 ft SE swell at 17 seconds and a combined energy of 3411, with a light offshore SW breeze. This is big, long-period power – excellent for experts, and because it's a point break, that long period will wrap in nicely.

The momentum keeps building. Monday the 24th morning is an 12 ft SE swell, but the wind is onshore, so it's marginal. Then Monday afternoon: a 13 ft SSE groundswell at 17 seconds, glassy conditions, and a combined energy of 8130. That is an exceptional, expert-only session.

Tuesday the 25th is a full day of onslaught. Both morning and afternoon show 13 ft SE swell with periods of 15 to 16 seconds. Morning is glassy with 8273 combined energy, and the afternoon has a clean cross-off breeze with 7059. Exceptional, but only for the best in the water.

Wednesday the 26th sees the consistency peak. The afternoon hits a 16 ft ESE swell at 14 seconds with a light, clean cross-off breeze. Combined energy hits a colossal 9050. That is world-class heavy stuff for experts only.

The week closes out with a quick taper. Thursday the 27th morning still has a 7 ft E swell at 12 seconds under glassy skies, energy of 1471 – excellent for experienced surfers. Thursday afternoon drops to a 5 ft E swell, still clean. Friday the 28th goes quiet again, down to 2 ft.

So, the standout is the run from Sunday the 23rd afternoon through Wednesday the 26th. For a single highlight, I’d lock in Wednesday the 26th afternoon: a 16 ft ESE swell, a 14-second period, clean cross-off winds, and combined energy of 9050. That is the biggest, cleanest, most powerful swell of the window. Osaki Point will be absolutely pumping, but it is strictly for expert surfers at that size.

If you’re not in that league, don't despair. Friday the 14th morning is a glassy, small wave day for the beginners, and Saturday the 22nd afternoon is a nice, clean option with chest-high sets. But that final swell is the one to wait for.

Rusty.

Short Range Forecast

Heavy rain (total 31mm), heaviest during Sat night. Warm (max 28°C on Fri morning, min 24°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 21mm), heaviest during Wed morning. Warm (max 28°C on Sun afternoon, min 25°C on Tue night). Wind will be generally light.

Thu
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
2
2
2
1
0
0
0
0
0
1
1
1
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.8
SSW
9
0.7
E
10
0.8
SSW
10
0.8
SSW
9
0.7
E
10
1.4
ESE
9
1.3
ESE
6
1.4
ESE
10
1.1
ESE
9
1.1
E
10
1.1
E
10
0.9
E
10
0.8
E
10
0.6
E
9
0.4
SE
10
0.4
SE
10
0.5
SE
10
Wave Graph
Metric surfscale
Energy kJ
110
108
106
106
98
123
108
92
326
113
334
225
260
244
158
116
58
26
34
47
Wind (km/h)
10
SSE
0
N
0
SSE
10
S
5
NW
10
E
15
ESE
15
E
20
ESE
15
ESE
15
ESE
10
SE
10
SE
10
SE
10
ESE
10
ESE
10
ENE
10
E
5
SE
5
SW
Wind State
cross
glassy
glassy
cross-off
glassy
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
on
on
cross-on
cross-off
High Tide
6:55PM1.83m
6:25AM1.90m
7:23PM1.83m
7:08AM1.87m
7:50PM1.81m
7:50AM1.78m
8:15PM1.77m
8:31AM1.66m
8:39PM1.71m
9:15AM1.51m
9:02PM1.65m
10:05AM1.37m
9:25PM1.57m
Low Tide
00:36AM0.66m
12:57PM0.08m
1:13AM0.56m
1:30PM0.22m
1:49AM0.50m
2:01PM0.39m
2:25AM0.47m
2:30PM0.57m
3:02AM0.48m
2:55PM0.76m
3:43AM0.53m
3:19PM0.92m
thunderstorm
thunderstorm
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
rain showers
part cloud
rain showers
rain showers
rain showers
thunderstorm
rain showers
thunderstorm
thunderstorm
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:24
5:24
5:26
5:26
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:51
6:50
6:49
6:47
6:45
6:45
 mm
4
2
2
1
15
7
2
4
3
3
3
1
1
4
4
Temp °C
27
26
28
28
26
28
28
26
27
28
26
28
28
26
27
28
27
28
28
27
Feels °C
30
30
31
31
30
30
30
29
28
30
28
31
31
30
30
32
31
32
33
32
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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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