Surf Forecasts:
Suicide Cliffs surf forecast from 16 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 3PM (local time) - 13ft (4.0m), 9s period, SE swell with 2,600 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 4.0m 9s and forecast to arrive on Thursday (Aug 20) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Wednesday (Aug 19) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Thu 20th Aug) | 13ft (4.0m) 9s |
Table - best surf conditions forecast for Suicide Cliffs over the next 16 days.
The Lowdown
Alright, Rusty here. Let's get into it.
Well, looks like we're in for a bit of a rough patch out at Suicide Cliffs (Oahu). The next week and a half is a pretty grim tale of poor conditions and lousy surf. Honestly, for the first eight days, from Monday the 17th right through to the following Sunday night, the 30th, it’s just not worth paddling out. The wave energy is weak to moderate at best in the early days, and the wind is constantly cross or onshore, making a mess of things. Even the big swell that shows up on the 20th afternoon—a 13ft beast with a massive 2629 combined energy reading—is going to be a write-off thanks to onshore winds. It’s just a big, blown-out brute that’ll be more dangerous than fun. We see those 12ft and 8ft swells on the 22nd and 23rd, but again, onshore winds ruin the show. It's actually a better setup for kite surfing than paddle surfing during that windy spell, if you're into that.
Then we get a tiny glimmer of hope. Around Tuesday the 25th, things start to calm. On the Tuesday morning it goes glassy with a tiny 2ft, which is a sign things could clean up, but the swell's too small to get excited about. The real standout, the only one worth marking on your calendar, is on Thursday the 27th of August. Early on, we get a clean 13ft of swell out of the NW with a fresh offshore wind—2630 combined energy. That is a proper, powerful groundswell with a long period of 9 seconds. It's going to be big, powerful and clean. This one's strictly for the experts due to the size; if you're not comfortable in big, heavy reef waves, give it a wide berth. The afternoon drops to a 2 out of 10 quality, but the wind shifts cross-off, so it'll still be clean but a little less perfect. On the 28th the wind picks up into a gale, and it’s all over again.
Water temp is sitting at a normal 84° for this time of year.
All in all, it's a long stretch of nothing, but that Thursday the 27th could be a day for the die-hards. Hold tight, it tends not to stay this poor forever.
Rusty.
Short Range ForecastHeavy rain (total 24mm), heaviest during Wed afternoon. Warm (max 29°C on Mon afternoon, min 27°C on Mon night). Winds increasing (light winds from the E on Mon afternoon, strong winds from the E by Wed afternoon). | Days 4-6 Weather SummaryHeavy rain (total 43mm), heaviest during Thu night. Warm (max 29°C on Fri morning, min 26°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 9 | SW 8 | SW 9 | SW 8 | SW 9 | SW 8 | SW 9 | SW 9 | SW 9 | S 10 | SE 9 | SE 9 | S 9 | S 9 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SSE 8 | SSE 8 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 104 | 102 | 104 | 71 | 59 | 43 | 27 | 19 | 22 | 68 | 2600 | 974 | 382 | 383 | 882 | 1475 | 899 | 649 | 790 | 519 | 313 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross-off | cross-off | cross | cross | cross-on | cross-on | on | on | on | on | on | on | on | on | cross-on | on | on |
High Tide | 9:52AM2.04m | 9:59PM2.05m | 10:35AM1.85m | 10:26PM1.99m | 11:22AM1.67m | 10:53PM1.92m | 12:25PM1.50m | 11:25PM1.84m | 2:21PM1.41m | 00:12AM1.77m | 4:51PM1.47m | 1:35AM1.72m | 5:34PM1.58m | ||||||||
Low Tide | 3:54PM0.68m | 4:22AM0.57m | 4:23PM0.87m | 5:06AM0.64m | 4:49PM1.05m | 5:57AM0.73m | 5:15PM1.21m | 7:03AM0.80m | 5:48PM1.34m | 8:29AM0.80m | 7:37PM1.44m | 9:50AM0.74m | 9:50PM1.41m | ||||||||
 |  |  | | | |  |  | | | | | | | | | | | | |  | |
 | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — |
mm | — | — | 1 | — | — | 5 | 6 | 7 | 5 | 3 | 2 | 19 | 1 | 3 | 3 | 2 | 4 | 6 | 4 | 1 | — |
Temp °C | 28 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 27 | 29 | 29 | 28 | 28 | 27 | 27 | 28 | 28 | 28 |
Feels °C | 31 | 32 | 31 | 29 | 28 | 28 | 26 | 26 | 30 | 31 | 30 | 28 | 31 | 30 | 28 | 28 | 27 | 27 | 30 | 30 | 32 |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 8 | SW 9 | SW 8 | SW 9 | SW 8 | SW 9 | SW 9 | SSW 8 | S 10 | SW 9 | S 10 | S 9 | S 9 | SW 10 | SW 10 | SW 10 | SW 11 | SW 11 | SW 11 | S 8 |
| kJ | 104 | 102 | 104 | 71 | 59 | 43 | 27 | 19 | 22 | 68 | 29 | 260 | 382 | 383 | 177 | 192 | 157 | 297 | 229 | 224 | 313 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | S 7 | S 7 | S 7 | S 8 | SSW 8 | SW 9 | SW 9 | — | SW 9 | SW 9 | SW 10 | ENE 9 | ENE 9 | ENE 9 | SSW 10 | E 14 | ESE 14 | SW 11 |
| kJ | 114 | 111 | 102 | 16 | 23 | 8 | 21 | 12 | 19 | 28 | — | 29 | 43 | 44 | 8 | 8 | 16 | 36 | 14 | 20 | 198 |
Swell 3 Height (m) Direction Period (s) | S 7 | SE 5 | S 7 | SSE 5 | ESE 10 | SE 10 | — | S 8 | S 11 | — | — | — | SE 11 | — | E 14 | E 14 | E 9 | ENE 9 | — | ENE 8 | ESE 14 |
| kJ | 16 | 19 | 17 | 9 | 10 | 4 | — | 5 | 10 | — | — | — | 5 | — | 4 | 16 | 2 | 8 | — | 6 | 118 |
Wind waves Height (m) Direction Period (s) | ESE 5 | — | ESE 5 | E 6 | E 6 | E 7 | E 8 | E 8 | ESE 8 | ESE 9 | SE 9 | SE 9 | ESE 8 | ESE 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SSE 8 | SSE 8 | E 6 |
| kJ | 32 | — | 46 | 139 | 160 | 348 | 643 | 604 | 1168 | 934 | 2600 | 974 | 363 | 356 | 882 | 1475 | 899 | 649 | 790 | 519 | 104 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 16 | 26 | 683 | 29 | 610 | 1008 | 775 | 601 | 593 | 593 | 26 | 593 | 593 | 593 | 629 | 601 | 593 | 593 | 102 | 26 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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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