
Surf Forecasts:
Irmas/Leftpoint surf forecast from 21 Jul 2026:
- Most powerful swell: Monday 27 Jul, 2PM (local time) - 7ft (2.1m), 14s period, E swell with 1,797 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 2.1m 14s and forecast to arrive on Monday (Jul 27) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 18s period and expected on Monday (Jul 20) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Mon 27th Jul) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ve been staring at the charts for Irmas/Leftpoint – a reef setup – and it’s a bit of a rough road ahead. We’ve got a solid 16-day window, but there’s a big gap at the start where it’s just not worth paddling out. The first few days are a write-off. From Monday the 20th of July all the way through to Saturday the 26th, the wind is hammering from the NE and cross-shore, the water’s lumpy, and the swell is either too small or junk. It’s a full week of “poor surf conditions” until we finally get a sniff of something better.
That first real chance comes on Sunday the 26th of July. The swell picks up to 6 ft from the E, with a very long period of 16 seconds. That’s a proper groundswell, and it has a lot of energy behind it – the combined energy reading is 2394 (moderate wave energy). The water is about 80°F, which is normal for this time of year, so no surprises there. But the wind is still a cross-shore from the NE at 19 mph, making it choppy. The forecast calls it “marginal”, and I’d agree. It’s not a standout, but it’s the first sign of life.
The real highlight, the one that has me a little excited, is shaping up for Wednesday the 29th of July. The swell pushes up to 8 ft from the ENE, with a period of 12 seconds. The wind finally swings to a cross-offshore from the NE at 12 mph, which means the face will be clean. The combined energy is 1999 (moderate wave energy). Now, 8 ft is getting into expert territory – it’s going to be big and powerful. This reef is exposed, so it’ll handle that swell direction well, but with that size, it’s not for the faint-hearted. The wind being clean is the key here. It’ll be a serious session for the experienced crew. Expect crowds here “sometimes”, so there might be a few out, but not a circus.
After that, the swell drops off quickly. By Thursday the 30th of July, the energy fades to 6 ft, and the wind turns cross-onshore, so it’s back to average. The rest of the run into early August is a mix of onshore winds and smaller, shorter-period swell, with the wind staying strong. It’s not going to be a classic run.
So, the standout is definitely Wednesday the 29th of July. If you’re an expert, that’s your window. For everyone else, Sunday the 26th could be a sneaky session if you can handle the mess. The rest… well, it’s a waiting game.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon night. Warm (max 26°C on Mon afternoon, min 24°C on Tue night). Winds increasing (light winds from the ENE on Tue morning, strong winds from the ENE by Wed night). | Days 5-7 Weather SummarySome drizzle, heaviest during Fri morning. Warm (max 25°C on Thu afternoon, min 24°C on Thu afternoon). Mainly strong winds. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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) | S 16 | S 15 | S 14 | S 14 | S 13 | S 24 | ENE 11 | SSW 22 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | E 17 | E 16 | E 16 | E 16 |
Wave Graph | ||||||||||||||||||||
321 | 339 | 329 | 311 | 277 | 404 | 553 | 480 | 432 | 395 | 611 | 329 | 528 | 588 | 392 | 572 | 1137 | 1469 | 1606 | 1745 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross | cross | cross | cross-on | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross |
High Tide | 7:13PM0.37m | 10:08AM0.51m | 7:46PM0.29m | 11:08AM0.55m | 8:50PM0.23m | 11:59AM0.59m | 10:38PM0.19m | 12:42PM0.62m | 11:56PM0.19m | 1:20PM0.64m | 00:50AM0.19m | 1:55PM0.66m | 1:32AM0.20m | |||||||
Low Tide | 2:57PM0.28m | 2:33AM0.04m | 5:25PM0.28m | 3:12AM0.05m | 7:38PM0.23m | 3:57AM0.05m | 8:24PM0.18m | 8:50PM0.15m | 5:38AM0.03m | 9:14PM0.12m | 6:24AM0.02m | 9:38PM0.11m | ||||||||
— | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | |
7:14 | — | — | 7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | |
mm | — | 3 | 2 | — | 4 | — | — | 1 | 1 | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 25 | 25 | 24 | 25 | 24 |
Feels °C | 24 | 23 | 25 | 24 | 24 | 22 | 22 | 23 | 21 | 21 | 20 | 22 | 23 | 20 | 21 | 23 | 22 | 21 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 15 | ENE 7 | S 14 | S 13 | S 13 | S 13 | E 12 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | E 17 | E 16 | E 16 | E 16 |
321 | 339 | 158 | 311 | 277 | 219 | 212 | 180 | 412 | 395 | 469 | 329 | 340 | 298 | 391 | 572 | 1137 | 1469 | 1606 | 1745 | |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 16 | S 14 | SW 16 | E 13 | E 12 | SSW 23 | S 13 | S 12 | S 11 | S 11 | S 12 | S 12 | S 20 | SSW 16 | E 14 | NNE 8 | SSW 16 | S 16 | SSW 16 |
81 | 69 | 329 | 68 | 119 | 138 | 426 | 157 | 68 | 90 | 55 | 105 | 100 | 296 | 223 | 146 | 192 | 469 | 522 | 416 | |
Swell 3 Height (m) Direction Period (s) | W 12 | E 12 | SW 17 | E 14 | SSW 26 | S 24 | SW 17 | SSW 22 | SSW 16 | SW 16 | S 13 | SSW 15 | S 21 | S 12 | E 14 | E 18 | SSW 18 | S 11 | S 10 | S 12 |
11 | 12 | 72 | 64 | 224 | 404 | 77 | 480 | 100 | 127 | 85 | 91 | 231 | 68 | 148 | 221 | 547 | 36 | 32 | 3 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | — | ENE 7 | ENE 7 | ENE 7 | ENE 11 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | NE 7 |
193 | 191 | — | 158 | 206 | 195 | 553 | 278 | 432 | 374 | 611 | 312 | 528 | 588 | 392 | 506 | 272 | 464 | 393 | 318 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 51 | 18 | 18 | 49 | 49 | 49 | 49 | 50 | 56 | 56 | 49 | 56 | 109 | 49 | 49 | 109 | 49 | 49 | 56 | 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.










