Nunoshima Surf Break

Lat Long: 33.76° N 134.58° E

Nunoshima Surf Forecast and Surf Report

Issued: 8 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nunoshima sea temperature is
28.3° C
0.7° 

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


Nunoshima surf forecast from 17 Aug 2026:

  • Best quality surf: Friday 21 Aug, 6AM (local time) - 3ft (0.9m), 9s period, S swell with glassy winds.
  • Most powerful swell: Friday 21 Aug, 6PM (local time) - 3.5ft (1.1m), 10s period, S swell with 260 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 6AM (local time) - 3ft (0.9m), 9s period with S swell.

Best Forecast Surf Conditions for Nunoshima this week:

The surf forecast for Nunoshima over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 6AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.3m and 10s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Nunoshima in the next 16 days are 1.1m 10s and forecast to arrive on Friday (Aug 21) 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+) 6AM (Fri 21st Aug)3ft (0.9m) 9s
Best Surf 6AM (Fri 21st Aug)3ft (0.9m) 9s
Most Powerful 6PM (Fri 21st Aug)3.5ft (1.1m) 10s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Mon night. Warm (max 29°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Thu morning. Warm (max 29°C on Fri afternoon, min 24°C on Sat night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
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)
0.8
SE
5
0.7
SSE
5
0.3
SE
11
0.3
SE
11
0.9
SE
5
0.4
SE
10
0.5
SE
8
0.7
SSE
8
0.3
SE
10
0.3
SE
10
0.4
S
10
0.9
S
9
0.9
S
9
1.1
S
10
1.1
S
10
0.9
SSW
10
0.9
SSW
10
0.8
SSW
9
0.7
SSW
9
0.6
SSW
9
0.6
SSW
9
Wave Graph
Metric surfscale
Energy kJ
30
21
20
24
33
26
29
50
15
15
30
125
126
249
245
157
150
113
84
64
62
Wind (km/h)
15
SSE
15
S
10
SSE
15
SSE
20
S
15
SSE
10
SSE
15
S
10
S
10
SSE
15
S
10
S
10
S
15
S
10
SSW
10
S
20
S
10
SSW
15
S
20
S
10
SW
Wind State
on
cross-on
on
on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
High Tide
8:18PM1.88m
8:47AM1.76m
8:45PM1.83m
9:37AM1.62m
9:13PM1.77m
10:45AM1.47m
9:48PM1.69m
12:49PM1.39m
10:41PM1.61m
3:26PM1.47m
00:26AM1.55m
4:19PM1.60m
2:18AM1.59m
Low Tide
2:11PM0.61m
2:35AM0.56m
2:40PM0.78m
3:17AM0.58m
3:10PM0.96m
4:09AM0.63m
3:44PM1.13m
5:20AM0.68m
4:37PM1.30m
7:01AM0.68m
7:27PM1.39m
8:35AM0.60m
9:25PM1.30m
rain showers
rain showers
rain showers
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
<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
5:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:46
6:45
6:44
6:43
6:42
6:40
6:39
 mm
2
1
4
3
2
1
Temp °C
27
29
26
27
28
26
28
28
26
28
28
26
28
29
26
29
28
26
29
29
26
Feels °C
30
31
30
30
30
30
31
31
31
32
31
31
33
32
30
31
30
31
31
31
30
  • 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 Nunoshima Surf forecast

The above surf forecast table for Nunoshima provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nunoshima can be found by selecting the local surf guide option on the grey menu. Our Nunoshima 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 (Nunoshima) 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 Nunoshima 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.

Nunoshima is 19 km (12 miles) from Anan. If you plan a holiday in Shikoku, look for hotels and other accommodation in Anan. Anan has rooms for a wide range of budgets as well as car hire and transport links.

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