Osaki Point Surf Break

Lat Long: 33.39° N 134.21° E

Osaki Point Surf Forecast and Surf Report

Issued: 8 am 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Osaki Point sea temperature is
29.1°C
1.5° 

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 1 Sep 2026:

  • Most powerful swell: Monday 7 Sep, 6AM (local time) - 11ft (3.5m), 9s period, E swell with 1,802 kJ wave energy.

Best Forecast Surf Conditions for Osaki Point this week:

The most powerful waves expected at Osaki Point in the next 16 days are 3.5m 9s and forecast to arrive on Monday (Sep 07) at 6AM. 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+)--
Best Surf--
Most Powerful 6AM (Mon 7th Sep)11ft (3.5m) 9s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what’s cookin’ at Osaki Point over the next couple of weeks.

Honestly, the first week and a bit is a write-off. The water temperature is sitting at 84°F, which is a touch warmer than normal for this time of year, but you wouldn't want to be out there anyway. We’re lookin’ at a solid 9-day stretch from Tuesday morning the 1st right through to Wednesday the 9th of September where everything is pretty grim – onshore winds, lumpy chop, heavy rain, thunderstorms, and a whole lot of poor conditions. The swell energy is all over the shop, from weak 221 knots up to a powerful 2522 knots on the 9th, but the wind just shreds it. Don’t even bother paddling out. This stretch is more suited to kite surfers if you’re into that, with strong cross-onshore winds and messy, powerful waves – not for a paddle board.

Thursday the 10th of September through to Monday the 14th of September is a bit of a mixed bag. The swell stays big – up to 13 ft from the SE with long 12-second periods – giving a very strong 7238 knots of energy on the Thursday morning, but the wind is mostly onshore or cross-onshore, making it choppy and messy. The Saturday afternoon (12th) has a bit of a drop in size to 5 ft, but it's swinging around from the SSW with that long 12-second period, and there’s still some cross-onshore wind. Not worth getting too excited about.

Now, I’m gonna talk about the two standout sessions. The best on offer is Wednesday the 16th of September. This is the one you wait for. Wednesday morning we’ve got a solid 8 ft SSW groundswell, with a very long 16-second period, and light cross-offshore winds from the SSW. Combined energy is a massive 3855 knots, and the report says "excellent surf conditions for experienced surfers" – this is only for the experienced crew, as it’s too big for beginners. The afternoon is even better: 10 ft from the SSW, still that epic 16-second period, and light offshore winds from the SW. Clean lines, heaps of power, and that light breeze will make for some real clean faces. It’s a beach and reef set-up, so that long-period groundswell will wrap in nicely. The swell direction matches that SSE optimum for the break. Crowds are listed as *sometimes* possible, so you might score a few good ones to yourself if you’re early. This is the one.

Also, keep an eye on the Tuesday morning the 15th of September. It’s big – 12 ft from the ESE with a very long 15-second period and a huge 6667 knots of energy – but the wind is cross-onshore and there are thunderstorms. It’s rated as poor, but there’s the potential for something to clean up. The Tuesday afternoon drops to 8 ft from the E with 13-second period and cross-shore wind, so it’s a bit lumpy. It’s promising, but much less certain than Wednesday.

So, in short: don’t bother with the first week and a half. Mark your calendar for Wednesday the 16th of September at Osaki Point. That’s your day – it’s the standout. Get out there if you can handle the size.

- Rusty

Short Range Forecast

Heavy rain (total 51mm), heaviest during Thu morning. Warm (max 29°C on Tue morning, min 24°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 139mm), heaviest during Fri morning. Warm (max 25°C on Sat morning, min 22°C on Fri night). Winds decreasing (fresh winds from the NE on Fri night, light winds from the N by Sun night).

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
3
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
E
13
0.6
E
12
0.8
E
12
1.2
SSE
9
1.2
S
9
1.1
S
8
1.2
SE
8
1.6
SSE
10
1.8
S
10
1.8
SSE
9
1.6
SSE
8
1.3
SSW
10
3
E
8
3
E
8
3
E
9
2.5
E
8
3
E
8
3.5
E
9
3
E
9
2.5
E
9
2
E
9
Wave Graph
Metric surfscale
Energy kJ
130
113
177
222
235
177
201
530
627
488
385
348
1015
1055
1357
796
1192
1573
1533
1185
680
Wind (km/h)
10
ESE
10
SE
5
E
15
NE
15
E
10
ESE
10
NE
25
NE
15
ENE
25
NE
35
NE
35
NE
30
NE
30
ENE
30
ENE
25
ENE
20
ENE
15
NE
10
NE
10
NE
15
NE
Wind State
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
on
on
on
on
on
cross-on
cross-on
on
cross-on
High Tide
8:04PM1.78m
8:53AM1.61m
8:31PM1.72m
9:51AM1.47m
9:03PM1.65m
11:17AM1.34m
9:44PM1.55m
1:51PM1.33m
11:02PM1.45m
3:35PM1.46m
1:18AM1.44m
4:20PM1.58m
2:55AM1.54m
Low Tide
2:01PM0.57m
2:31AM0.34m
2:33PM0.75m
3:16AM0.36m
3:07PM0.93m
4:14AM0.42m
3:51PM1.11m
5:38AM0.48m
5:36PM1.26m
7:29AM0.46m
8:35PM1.23m
8:56AM0.35m
9:46PM1.08m
clear
clear
clear
rain showers
thunderstorm
thunderstorm
heavy rain
light rain
mod rain
heavy rain
heavy rain
heavy rain
light rain
rain showers
light rain
light rain
light rain
light rain
light rain
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:35
5:37
5:37
5:37
5:39
5:39
5:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:29
6:28
6:27
6:24
6:23
6:22
6:21
 mm
1
3
18
17
5
7
64
26
34
1
1
3
4
3
3
2
3
Temp °C
29
29
26
28
29
26
25
25
25
24
24
23
25
25
24
25
25
25
27
28
26
Feels °C
32
32
30
31
32
30
28
26
27
25
22
22
23
24
23
25
26
26
30
31
29
  • 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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