Surf Forecasts:
Suicide Cliffs surf forecast from 15 Aug 2026:
- Most powerful swell: Friday 21 Aug, 3AM (local time) - 10ft (3.0m), 9s period, S swell with 1,299 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 3.0m 9s and forecast to arrive on Friday (Aug 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 1.9m 6s period and expected on Thursday (Aug 20) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3AM (Fri 21st Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Suicide Cliffs over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a good look at what’s coming down the pipe for Suicide Cliffs (reef).
First up, the water temp is sittin’ at about 84°, which is pretty much spot on for this time of year – nothing weird going on there.
Honestly, the outlook is a bit of a tough one. We’ve got a real quiet start with no real surf to speak of for the first few days. Saturday the 15th through to Monday the 17th is a write-off – the wind is all over the shop, mostly cross to onshore, and while there’s a bit of knee-high SW swell around 3 ft, it’s just messy. That Saturday morning on the 15th is the only real glimmer, with glassy conditions and a 4 ft SW swell (8 seconds) and a combined energy of 197 – it’s small and surfable, but nothing to write home about.
Tuesday the 18th and Wednesday the 19th stay poor. The wind picks up, and we’ve got a mix of cross and cross-off winds with tiny, weak swell. The energy drops right off, down to 48 on Wednesday morning – that’s barely a ripple.
Now, here’s where it gets interesting. Friday the 21st of August is the standout. We’ve got a solid pulse of S swell hitting 7 ft (10 seconds), with a combined energy reading of 921 – that’s a serious shot of power. The wind is cross-off from the ENE, so the faces should be clean. This is the one to circle on the calendar. Be warned though – at over 8 ft it’s getting into expert territory, and this is a reef break with a long period swell (10 seconds), so it’s going to have plenty of push and some long lulls between sets. By Saturday the 22nd it’s still pumping at 8 ft (932 energy) but the wind is howling from the NE at 31 mph, so it’ll be challenging but still clean with that cross-off.
After that, the swell drops back, and the wind turns onshore through Sunday and Monday, so we’re back to lumpy, poor conditions. The rest of the run into the end of the month is a mix of small, weak swell with either onshore or cross winds – nothing you’d want to paddle out for.
So, the real highlight here is Friday the 21st. Suicide Cliffs should be firing with a clean, strong 7 ft S swell. Get on it early, and be ready for a session that demands respect.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun morning. Warm (max 29°C on Sat afternoon, min 27°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 33mm), heaviest during Fri morning. Warm (max 28°C on Tue afternoon, min 26°C on Fri morning). Mainly fresh winds. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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 8 | SW 8 | SW 8 | SW 8 | SW 9 | SW 8 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SE 6 | SW 9 | S 9 | SSW 9 | SSE 7 | SSE 9 | S 9 | S 9 | S 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 99 | 114 | 132 | 112 | 123 | 120 | 138 | 104 | 76 | 74 | 47 | 70 | 27 | 43 | 43 | 320 | 1177 | 1098 | 683 | 548 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross-on | on | on | cross-on |
High Tide | 9:01PM2.13m | 9:10AM2.20m | 9:31PM2.10m | 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 | |||||||
Low Tide | 3:01AM0.52m | 3:23PM0.48m | 3:41AM0.52m | 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 | ||||||||
 |  |  |  |  | | | | | |  | | |  | | | |  | | | |
 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | 3 | 3 | 3 | 3 | 4 | 2 | 5 | 10 | 4 | 4 |
Temp °C | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 27 |
Feels °C | 33 | 32 | 31 | 29 | 28 | 29 | 29 | 29 | 30 | 29 | 27 | 31 | 31 | 31 | 31 | 31 | 28 | 28 | 27 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 8 | SW 8 | SW 8 | SW 9 | SW 8 | SW 9 | SW 9 | SSE 6 | SW 9 | SW 9 | SE 6 | SSE 6 | S 9 | SSW 9 | SSE 10 | ENE 8 | SW 9 | S 9 | SW 10 |
| kJ | 99 | 114 | 132 | 112 | 123 | 120 | 138 | 104 | 44 | 74 | 47 | 70 | 12 | 43 | 43 | 170 | 33 | 31 | 683 | 132 |
Swell 2 Height (m) Direction Period (s) | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | SW 9 | SSE 6 | ENE 9 | ENE 9 | SW 9 | SW 8 | SW 9 | ENE 8 | SW 9 | ENE 8 | ESE 7 | ENE 8 |
| kJ | 133 | 116 | 114 | 114 | 111 | 114 | 111 | 111 | 76 | 26 | 45 | 43 | 27 | 18 | 19 | 83 | 29 | 13 | 47 | 13 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 | S 8 | ENE 10 | S 8 | S 8 | SW 9 | SSW 7 | SSE 8 | S 12 | SW 9 | — | — | SW 9 | ESE 9 |
| kJ | 63 | 43 | 41 | 32 | 26 | 10 | 17 | 28 | 72 | 29 | 28 | 38 | 18 | 12 | 25 | 20 | — | — | 29 | 17 |
Wind waves Height (m) Direction Period (s) | — | E 4 | ESE 4 | ESE 5 | ESE 5 | SE 6 | SE 5 | SE 5 | E 6 | E 6 | ESE 6 | ENE 7 | E 7 | E 8 | ESE 6 | SSE 7 | SSE 9 | S 9 | — | S 9 |
| kJ | — | 6 | 27 | 34 | 52 | 69 | 67 | 53 | 41 | 164 | 194 | 93 | 150 | 191 | 275 | 320 | 1177 | 1098 | — | 548 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 16 | 16 | 16 | 26 | 16 | 26 | 26 | 26 | 26 | 1045 | 29 | 27 | 1517 | 593 | 26 | 26 | 610 | 629 | 617 | 593 |
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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