Surf Forecasts:
Nunoshima surf forecast from 19 Aug 2026:
- Best quality surf: Monday 24 Aug, 9PM (local time) - 10ft (3.0m), 17s period, SSE swell with cross-shore winds.
- Most powerful swell: Tuesday 25 Aug, 9PM (local time) - 16ft (5.0m), 16s period, SSE swell with 13,549 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 0.4m 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 5.0m 16s and forecast to arrive on Tuesday (Aug 25) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 8s period and expected on Thursday (Aug 27) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 21st Aug) | 3ft (0.9m) 9s |
| Best Surf | 9PM (Mon 24th Aug) | 10ft (3.0m) 17s |
| Most Powerful | 9PM (Tue 25th Aug) | 16ft (5.0m) 16s |
Table - best surf conditions forecast for Nunoshima over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 29°C on Thu morning, min 25°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 31°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 | Wednesday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SE 10 | SE 10 | S 9 | S 9 | S 10 | S 9 | SSW 9 | SSW 9 | S 8 | SSW 9 | SE 16 | SE 14 | SE 17 | SSE 17 | SSE 17 | SSE 17 | SSE 17 | SE 16 | SE 14 | SE 13 | SE 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 15 | 17 | 102 | 125 | 148 | 103 | 84 | 82 | 51 | 61 | 64 | 407 | 1619 | 2964 | 5226 | 8314 | 11180 | 12751 | 7471 | 5603 | 4565 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | glassy | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-off | on | glassy | on | on | on |
High Tide | 10:45AM1.47m | 9:48PM1.69m | 12:49PM1.39m | 10:41PM1.61m | 3:26PM1.47m | 00:26AM1.55m | 4:19PM1.60m | 2:18AM1.59m | 4:51PM1.71m | 3:30AM1.70m | 5:17PM1.80m | 4:23AM1.82m | 5:43PM1.86m | ||||||||
Low Tide | 3:44PM1.13m | 5:20AM0.68m | 4:37PM1.30m | 7:01AM0.68m | 7:27PM1.39m | 8:35AM0.60m | 9:25PM1.30m | 9:39AM0.48m | 10:14PM1.17m | 10:26AM0.38m | 10:50PM1.03m | 11:05AM0.31m | 11:22PM0.88m | ||||||||
 | |  |  |  | | | | | | | | | | | | |  | |  |  | |
 | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — |
 | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 11 | 10 | 39 |
Temp °C | 29 | 29 | 26 | 29 | 29 | 26 | 29 | 29 | 26 | 29 | 29 | 25 | 29 | 29 | 25 | 30 | 31 | 28 | 27 | 27 | 25 |
Feels °C | 32 | 32 | 30 | 32 | 32 | 30 | 31 | 31 | 30 | 32 | 31 | 28 | 32 | 31 | 29 | 33 | 34 | 32 | 29 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | SE 10 | S 8 | S 9 | S 9 | S 10 | S 9 | SSW 9 | SSW 9 | S 8 | SSW 9 | SSW 9 | SE 14 | SE 17 | SSE 17 | SSE 17 | SSE 17 | SSE 17 | SE 16 | SE 14 | SE 13 | SE 12 |
| kJ | 15 | 12 | 102 | 125 | 148 | 103 | 84 | 82 | 51 | 61 | 44 | 407 | 1619 | 2964 | 5226 | 8314 | 11180 | 12751 | 7471 | 5603 | 4565 |
Swell 2 Height (m) Direction Period (s) | SE 6 | SE 10 | SE 10 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | SE 15 | SE 13 | SSE 18 | SSW 12 | SSW 10 | S 10 | SW 10 | SW 10 | — | — | — | SW 11 |
| kJ | 5 | 15 | 16 | 29 | 17 | 17 | 17 | 17 | 10 | 33 | 63 | 209 | 106 | 85 | 71 | 24 | 33 | — | — | — | 5 |
Swell 3 Height (m) Direction Period (s) | SSW 8 | S 10 | ESE 7 | E 6 | ESE 6 | SE 10 | SE 9 | SE 9 | SSE 9 | SSE 10 | SE 16 | SSW 10 | — | — | — | — | — | — | — | — | — |
| kJ | 6 | 17 | 4 | 1 | 4 | 4 | 3 | 3 | 8 | 9 | 64 | 72 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | S 2 | — | — | SSW 2 | SSW 2 | — | — | SSW 3 | — | SSW 2 | — | — | — | — | — | — | — | NNE 6 | NNE 7 | NNE 6 |
| kJ | — | 1 | — | — | 1 | 1 | — | — | 1 | — | 1 | — | — | — | — | — | — | — | 173 | 499 | 322 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 29 | 53 | 4 | 0 | 4 | 4 | 4 | 4 | 4 | 4 | 34 | 4 | 4 | 4 | 4 | 2 | 755 | 24 | 474 | 453 | 353 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Nunoshima surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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