Surf Forecasts:
Santos (Hachijojima Island) surf forecast from 18 Sep 2026:
- Best quality surf: Sunday 20 Sep, 9PM (local time) - 25ft (7.5m), 13s period, SE swell with onshore winds.
- Most powerful swell: Monday 21 Sep, 3AM (local time) - 31ft (9.5m), 13s period, SE swell with 33,011 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 9PM (local time) - 25ft (7.5m), 13s period with SE swell.
Best Forecast Surf Conditions for Santos (Hachijojima Island) this week:
The surf forecast for Santos (Hachijojima Island) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 20) at 9PM. The primary swell is predicted to be 7.5m and 13s period with a secondary swell of 4.5m and 13s. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Santos (Hachijojima Island) in the next 16 days are 9.5m 13s and forecast to arrive on Monday (Sep 21) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 8s period and expected on Monday (Sep 21) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 20th Sep) | 25ft (7.5m) 13s |
| Best Surf | 9PM (Sun 20th Sep) | 25ft (7.5m) 13s |
| Most Powerful | 3AM (Mon 21st Sep) | 31ft (9.5m) 13s |
Table - best surf conditions forecast for Santos (Hachijojima Island) over the next 16 days.
Short Range ForecastHeavy rain (total 198mm), heaviest during Sat night. Warm (max 28°C on Sun morning, min 25°C on Sat night). Winds increasing (fresh winds from the E on Fri night, stormy winds from the E by Sun night). | Days 4-6 Weather SummaryHeavy rain (total 35mm), heaviest during Mon morning. Warm (max 27°C on Mon afternoon, min 26°C on Mon morning). Winds decreasing (stormy winds from the WNW on Mon morning, calm by Tue afternoon). | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||
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) | NNE 8 | NE 8 | SE 13 | SE 14 | SE 13 | ESE 12 | ESE 12 | SE 12 | SE 12 | SSE 12 | SSE 11 | S 9 | NNE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 9 | NE 8 | NE 10 | NE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 866 | 1279 | 2760 | 8050 | 5943 | 5567 | 6802 | 10933 | 17797 | 3806 | 444 | 258 | 378 | 323 | 269 | 256 | 256 | 199 | 97 | 160 | 159 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | off | off | cross-off | cross-off | off | cross-on | cross-on | cross-on | on | cross-off | cross-off | off |
High Tide | 10:32AM1.22m | 7:46PM1.50m | 8:05PM1.41m | 4:38PM1.33m | 4:04PM1.38m | 1:08AM1.30m | 4:12PM1.45m | 2:22AM1.40m | 4:25PM1.51m | 3:11AM1.51m | 4:40PM1.57m | ||||||||||
Low Tide | 1:23PM1.18m | 4:27AM0.67m | 6:19AM0.65m | 7:45AM0.59m | 8:57PM1.21m | 8:41AM0.51m | 9:19PM1.11m | 9:23AM0.46m | 9:44PM1.01m | 9:57AM0.45m | 10:10PM0.89m | ||||||||||
 | |  |  | | | | | |  |  |  |  |  |  | | |  | | | | |
 | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | 5:44 | — | — | 5:42 | — | — | 5:40 | — | — | 5:39 | — | — | 5:37 | — | — | 5:37 | — | — | 5:36 | — |
mm | 2 | 1 | 8 | 6 | 6 | 64 | 17 | 5 | 89 | 31 | 2 | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 26 | 27 | 27 | 27 | 27 | 26 | 28 | 28 | 28 | 26 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 |
Feels °C | 22 | 23 | 25 | 25 | 25 | 22 | 24 | 25 | 22 | 13 | 24 | 27 | 28 | 28 | 29 | 28 | 29 | 28 | 27 | 28 | 30 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | SE 14 | SE 13 | SE 14 | SE 13 | NNE 8 | — | — | S 14 | SSE 12 | NNW 9 | S 9 | NNE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 9 | NE 8 | NE 10 | NE 9 |
| kJ | 90 | 116 | 2760 | 8050 | 5943 | 96 | — | — | 7898 | 3806 | 950 | 258 | 378 | 323 | 269 | 256 | 256 | 199 | 97 | 160 | 159 |
Swell 2 Height (m) Direction Period (s) | ENE 12 | SE 10 | SE 17 | NNE 8 | — | — | — | — | — | E 10 | SSE 11 | NNE 8 | W 7 | WNW 7 | WNW 6 | SE 6 | SSE 6 | ESE 5 | ESE 5 | ESE 5 | ESE 5 |
| kJ | 186 | 37 | 1586 | 298 | — | — | — | — | — | 1048 | 444 | 241 | 131 | 58 | 13 | 11 | 16 | 21 | 31 | 17 | 14 |
Swell 3 Height (m) Direction Period (s) | SE 11 | S 10 | — | — | — | — | — | — | — | — | NE 9 | WNW 7 | SSE 8 | SSW 6 | SSW 8 | SW 5 | E 10 | SSE 8 | NE 10 | NE 8 | ESE 9 |
| kJ | 20 | 2 | — | — | — | — | — | — | — | — | 190 | 171 | 82 | 22 | 7 | 6 | 17 | 14 | 49 | 18 | 16 |
Wind waves Height (m) Direction Period (s) | NNE 8 | NE 8 | NE 8 | — | NNE 8 | ESE 12 | ESE 12 | SE 12 | SE 12 | NNW 8 | W 8 | SW 7 | — | — | S 7 | — | — | — | — | — | — |
| kJ | 866 | 1279 | 941 | — | 263 | 5567 | 6802 | 10933 | 17797 | 2523 | 652 | 91 | — | — | 74 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 480 | 497 | 495 | 494 | 480 | 495 | 546 | 565 | 511 | 237 | 237 | 204 | 0 | 0 | 204 | 204 | 297 | 249 | 0 | 0 | 0 |
Best forecast wave conditions in Izu Islands | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Santos (Hachijojima Island) Surf forecast
The above surf forecast table for Santos (Hachijojima Island) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Santos (Hachijojima Island) can be found by selecting the local surf guide option on the grey menu. Our Santos (Hachijojima Island) 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 (Santos (Hachijojima Island)) 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 Santos (Hachijojima Island) 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.
Santos (Hachijojima Island) is 192 km (119 miles) from Oshima. If you plan a holiday in Izu Islands, look for hotels and other accommodation in Oshima. Oshima has rooms for a wide range of budgets as well as car hire and transport links.
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