Surf Forecasts:
Irmas/Leftpoint surf forecast from 14 Aug 2026:
- Most powerful swell: Sunday 16 Aug, 2AM (local time) - 15ft (4.5m), 10s period, E swell with 3,912 kJ wave energy.
Best Forecast Surf Conditions for Irmas/Leftpoint this week:
The most powerful waves expected at Irmas/Leftpoint in the next 16 days are 4.5m 10s and forecast to arrive on Sunday (Aug 16) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Friday (Aug 21) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 16th Aug) | 15ft (4.5m) 10s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
Right then, let’s get into it. I’m looking at the 16-day window for Irmas/Leftpoint, and honestly, it’s a tough stretch. The whole period is dominated by messy, cross-shore winds that just won’t let up, and the swell is mostly short-period, wind-affected stuff. There’s a real gap here with nothing worthwhile on offer.
The first few days show a building swell, but it’s all poor. Friday the 14th has a 8ft to 8ft ENE swell with a short 8-second period, but that 22 to 25 mph cross-shore wind is just ruining it. The wave energy is already strong at 1051 to 1219, but it’s lumpy and cross-chop. By Saturday the 15th, the swell jumps to 12ft from the E, and the energy is pumping at 2140 to 2360, but it’s a near gale crossing. That’s only for experts, and the wind is a disaster. Sunday the 16th keeps the 12ft from the E, but with risk of t-storms and a cross-on breeze, it’s a mess.
We don’t get any real let-up until the middle of the week, but even then, the swell drops off fast. By Monday the 18th, the swell is 5ft with a 7-second period, and the energy is only 367. It’s still cross-shore and lumpy. A bit of a lull sets in, with tiny 2ft to 3ft swells around the 20th and 21st, but the wind is still cross or cross-on, so it’s all choppy and blown out. The wave energy sinks to 82 to 226, which is weak.
Then around the 27th and 28th of August, we see a bit of a pulse again. The swell picks up to 8ft from the ENE with an 8 to 10-second period, and the energy climbs back to 1055 to 1339. But the wind is still a strong 25 mph cross-shore. It’s messy and lumpy. The 28th afternoon shows a marginal improvement with a 1/10 score, but it’s still cross-shore and lumpy. There’s just no clean, glassy window here.
The break itself is a reef setup, exposed to ESE swells, which is the direction we’re seeing, but it’s fairly consistent. The crowds are sometimes a problem, but with this wind, I doubt many will be out. The water temperature doesn’t show any anomaly, so it’s about average for the time of year.
So, to be blunt, there are no standout days in this 16-day outlook. The winds are relentless, and the swell is either too big and messy or too small and weak. The only real positive is that the break is fairly consistent, so it’s not a surprise when the conditions are poor. If you’re looking at the 27th and 28th, the swell is there, but it’s a cross-shore mess. For now, I’d say it’s more of a kite-surfing setup with that strong, consistent cross-wind, rather than a paddle session. The wait continues.
Rusty.
Short Range ForecastHeavy rain (total 36mm), heaviest during Sun morning. Warm (max 26°C on Fri morning, min 25°C on Fri morning). Winds decreasing (near gales from the ENE on Sat night, moderate winds from the E by Sun night). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Mon morning, min 25°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 9 | E 9 | E 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | E 8 | SSW 18 | SSW 17 | ENE 7 |
Wave Graph | |||||||||||||||||||||
604 | 689 | 1193 | 1769 | 2737 | 3912 | 1848 | 1000 | 561 | 385 | 294 | 197 | 199 | 188 | 168 | 167 | 158 | 102 | 207 | 202 | 157 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross-on |
High Tide | 4:22PM0.64m | 5:04AM0.45m | 4:53PM0.55m | 5:55AM0.48m | 5:21PM0.47m | 6:52AM0.50m | 5:48PM0.38m | 7:56AM0.52m | 6:10PM0.31m | 9:08AM0.53m | 10:20AM0.55m | 8:45PM0.20m | |||||||||
Low Tide | 10:01AM0.07m | 11:17PM0.04m | 10:54AM0.13m | 11:44PM0.05m | 11:53AM0.20m | 00:11AM0.05m | 1:08PM0.25m | 00:39AM0.07m | 2:59PM0.27m | 1:14AM0.09m | 2:00AM0.10m | 7:38PM0.20m | 3:06AM0.11m | ||||||||
6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:57 | — | |
mm | — | — | — | — | — | 3 | 15 | 6 | 12 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 23 | 23 | 22 | 21 | 21 | 22 | 21 | 26 | 27 | 24 | 23 | 23 | 23 | 23 | 24 | 25 | 24 | 25 | 25 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 | SSE 8 | ENE 9 | SSE 6 | S 14 | S 14 | S 13 | S 13 | S 13 | ENE 8 | SW 16 | S 12 | E 8 | E 7 | SSW 17 | SW 16 |
411 | 411 | 243 | 225 | 168 | 181 | 151 | 1000 | 56 | 338 | 257 | 170 | 162 | 119 | 168 | 129 | 45 | 102 | 127 | 202 | 278 | |
Swell 2 Height (m) Direction Period (s) | W 12 | E 11 | ESE 12 | W 11 | S 16 | S 18 | S 16 | SSE 8 | S 14 | S 6 | S 5 | E 9 | SW 17 | SSW 18 | S 13 | S 12 | SSW 16 | SW 16 | NE 6 | SSW 11 | S 15 |
11 | 91 | 202 | 9 | 78 | 99 | 188 | 196 | 250 | 16 | 8 | 25 | 74 | 121 | 116 | 44 | 100 | 129 | 42 | 23 | 38 | |
Swell 3 Height (m) Direction Period (s) | NNW 7 | SSW 18 | SSW 17 | NNW 8 | NNW 8 | W 13 | S 13 | S 13 | S 16 | SW 18 | SW 19 | SSW 19 | W 13 | W 13 | SW 18 | NNE 7 | SW 19 | S 12 | SSW 18 | S 16 | S 11 |
5 | 30 | 29 | 6 | 6 | 13 | 84 | 125 | 81 | 50 | 58 | 37 | 14 | 14 | 79 | 18 | 92 | 45 | 207 | 19 | 22 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 9 | E 9 | E 10 | ENE 9 | — | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | ENE 8 | ENE 7 | NE 7 | — | ENE 7 | ENE 7 |
604 | 689 | 1193 | 1769 | 2737 | 3912 | 1848 | — | 561 | 385 | 294 | 197 | 199 | 188 | — | 167 | 158 | 71 | — | 167 | 157 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 56 | 64 | 113 | 140 | 218 | 140 | 112 | 41 | 15 | 49 | 49 | 49 | 49 | 49 | 18 | 18 | 18 | 18 | 49 | 18 | 18 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Irmas/Leftpoint Surf forecast
The above surf forecast table for Irmas/Leftpoint provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Irmas/Leftpoint can be found by selecting the local surf guide option on the grey menu. Our Irmas/Leftpoint 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 (Irmas/Leftpoint) 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 Irmas/Leftpoint 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.
Irmas/Leftpoint is 15 km (9 miles) from the city of Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.











