Surf Forecasts:
Suicide Cliffs surf forecast from 15 Sep 2026:
- Most powerful swell: Saturday 19 Sep, 12AM (local time) - 1.5ft (0.5m), 8s period, S swell with 35 kJ wave energy.
Best Forecast Surf Conditions for Suicide Cliffs this week:
The most powerful waves expected at Suicide Cliffs in the next 16 days are 0.5m 8s and forecast to arrive on Saturday (Sep 19) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 13s period and expected on Sunday (Sep 20) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12AM (Sat 19th Sep) | 1.5ft (0.5m) 8s |
Table - best surf conditions forecast for Suicide Cliffs over the next 16 days.
The Lowdown
Righto, grab a coffee and listen up. It’s Rusty here, and I’ve gotta be straight with you about Suicide Cliffs on the Big Island. For the next two and a bit weeks, it’s looking pretty grim. We're staring down the barrel of a long, slow stretch with next to no real surf on offer. The whole 16-day window is a washout, basically.
From now, September 16th, right through most of the month, the wave energy is basically zero (0). There are little blips of tiny, weak 1ft S swell pushing in on the 18th and 20th, but that’s a joke. A swell period of 8 seconds is too short to organise anything decent, and with the combined energy only at a measly 22 (on the 18th) and 21 (on the 20th), it’s gutless. The water temp is pretty average for this time of year, nothing wild to report there.
We get a whisper of a chance right at the tail end. The morning of Wednesday, September 30th, shows some potential. We’re looking at a 4ft SSW groundswell rolling in with an 11-second period. That’s a proper pulse with a combined energy of 453—moderate to strong energy. Wind is blowing fresh offshore from the NNW, which will make for clean, lined-up faces. That’s the standout morning in the whole forecast. The afternoon, however, the wind picks up to a strong breeze, making it hard to paddle into. Then we roll into October 1st with a smaller 3ft SW swell and moderate offshore wind, which is still a workable option but nothing like that last burst.
There’s just one true highlight here: the morning of September 30th. A clean 4ft SW swell at Suicide Cliffs is the best we’re gonna get. It’s a reef break, exposed to that SW swell direction, and it can get crowded, so expect others to be onto it. For the rest of it? Honestly, with all the wind and tiny surf, it's looking more like a kite session than a paddle session out there.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Tue night. Warm (max 28°C on Wed morning, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sun afternoon. Warm (max 28°C on Sat morning, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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) | E 10 | E 10 | E 10 | E 9 | ENE 14 | E 9 | S 9 | S 8 | S 8 | S 8 | E 15 | E 14 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 0 | 25 | 22 | 21 | 35 | 0 | 0 | 21 | 21 | 21 | 11 | 10 | 4 | 4 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | off | off | off | off | off | off |
High Tide | 9:10PM2.09m | 10:09AM1.81m | 9:33PM2.01m | 10:50AM1.64m | 9:57PM1.92m | 11:44AM1.49m | 10:23PM1.82m | 1:24PM1.41m | 11:04PM1.72m | 4:00PM1.45m | 00:32AM1.62m | 4:42PM1.56m | 2:43AM1.63m | ||||||
Low Tide | 3:48AM0.41m | 3:41PM0.96m | 4:26AM0.52m | 4:04PM1.11m | 5:09AM0.64m | 4:25PM1.23m | 6:04AM0.75m | 4:54PM1.34m | 7:24AM0.81m | 6:55PM1.42m | 8:56AM0.78m | 9:25PM1.34m | |||||||
 |  | | |  | | | | |  | | | | |  |  |  | | | |
 | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — |
 | 6:34 | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:27 | — |
mm | 3 | 1 | 1 | 1 | — | 2 | 2 | 1 | 2 | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 31 | 31 | 31 | 29 | 30 | 29 | 30 | 32 | 32 | 30 | 30 | 29 | 29 | 30 | 27 | 24 | 25 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 14 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 13 |
| kJ | 307 | 266 | 219 | 211 | 171 | 171 | 132 | 97 | 97 | 101 | 89 | 439 | 1792 | 1872 | 2303 | 2515 | 1703 | 965 | 835 |
Swell 2 Height (m) Direction Period (s) | NNW 6 | ENE 14 | ENE 14 | ENE 14 | ENE 14 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | E 15 | E 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 7 |
| kJ | 13 | 113 | 107 | 213 | 198 | 135 | 135 | 119 | 83 | 81 | 157 | 104 | 21 | 21 | 21 | 11 | 10 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | ENE 16 | NNW 6 | NNW 7 | NNW 7 | NW 7 | NNW 6 | S 9 | S 8 | S 8 | S 8 | ENE 11 | NE 11 | — | NNW 9 | S 8 | — | — | SE 10 | SE 10 |
| kJ | 51 | 15 | 17 | 18 | 11 | 8 | 25 | 22 | 21 | 35 | 71 | 123 | — | 25 | 12 | — | — | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | NE 3 | — | — | — | — | — | N 3 | N 9 | N 7 | NNE 5 | — | — | NNW 9 | N 8 | NNW 8 | NNW 8 |
| kJ | — | — | — | 5 | — | — | — | — | — | 1 | 13 | 4 | 14 | — | — | 30 | 127 | 118 | 96 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 5 | 5 | 27 | 27 | 27 | 27 | 5 | 5 | 5 | 601 | 5 | 683 | 27 | 27 | 775 | 601 | 685 | 601 | 601 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Suicide Cliffs Surf forecast
The above surf forecast table for Suicide Cliffs provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Suicide Cliffs can be found by selecting the local surf guide option on the grey menu. Our Suicide Cliffs 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 (Suicide Cliffs) 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 Suicide Cliffs 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.
Suicide Cliffs is 7 km (4 miles) from the city of Itoman. If you plan a holiday in Okinawa, look for hotels and other accommodation in Itoman. Itoman has rooms for a wide range of budgets as well as car hire and transport links.
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