Surf Forecasts:
Irmas/Leftpoint surf forecast from 9 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 8PM (local time) - 8ft (2.5m), 8s period, ENE swell with 691 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 2.5m 8s and forecast to arrive on Sunday (Jul 12) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 17s period and expected on Sunday (Jul 12) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sun 12th Jul) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
Right, ol’ Rusty here wit’ the latest on the surf. Gotta say, it’s been a tough stretch as we look out over the next 16 days. Let’s talk about Irmas/Leftpoint.
We’re starting off a bit of a dry spell, really. From Thursday the 9th of July all the way through to the last few days of the outlook, conditions are just not cooperating. The wind is bangin’ cross-shore mostly, a fresh breeze to strong breeze category, kicking up a lumpy, messy cross-chop. Wave heights are hanging around the 6 ft to 8 ft mark, and the period is a short, onesy little thing at 7-8 seconds, so the efficiency just ain’t there. Wave energy sits in the moderate bracket, with values like 630 on Thursday morning, dropping to a 310 on the 14th. Water temp is 79° with no real anomaly, so it’s just your usual warm bathtub.
It’s not until we get way out there, on Monday the 20th of July afternoon, that the swell period starts to come alive, but the height drops right off. That ENE wind is still cross-shore and it’s a “marginal” call. The really interesting shift is on Tuesday the 21st of July morning: we finally start to see some quality changes. The swell picks up from the E at 4 ft, and the period jumps to 16 seconds – proper groundswell, and very long period. The combined energy rockets into the strong zone, hitting 1471. This is a setup that loves a reef like Irmas/Leftpoint, with that ESE optimum direction, though we’ve got ENE wind which is cross-shore, keeping it lumpy.
The Tuesday afternoon even looks clean, with a NE wind at 19 mph, but again the size is down to 4 ft. This is the closest we get to a standout over the whole run, but it’s a long way out, on the 20th and 21st, so keep an eye on that, but don’t bank on it. Honestly, the rest of the window into the 23rd and 24th is more of the same grotty cross-shore wind and gutless swell. This is a blank run that’s pretty standard for this area when the trades get stuck in. Don’t be surprised, but check back in case the forecasts shift.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Thu morning, min 24°C on Thu morning). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sun afternoon, min 24°C on Sun morning). Mainly strong winds. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 494 | 452 | 426 | 353 | 379 | 407 | 531 | 412 | 366 | 516 | 559 | 691 | 512 | 373 | 371 | 359 | 310 | 334 | 301 | 256 | 408 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on |
High Tide | 11:46AM0.64m | 10:28PM0.22m | 12:36PM0.72m | 11:48PM0.19m | 1:24PM0.77m | 00:55AM0.18m | 2:10PM0.81m | 1:53AM0.19m | 2:55PM0.82m | 2:47AM0.21m | 3:38PM0.81m | 3:40AM0.23m | 4:19PM0.78m | 4:35AM0.27m | |||||||
Low Tide | 7:30PM0.18m | 4:54AM-0.05m | 8:27PM0.12m | 5:46AM-0.07m | 9:12PM0.08m | 6:39AM-0.08m | 9:53PM0.05m | 7:31AM-0.09m | 10:32PM0.03m | 8:22AM-0.08m | 11:09PM0.02m | 9:12AM-0.05m | 11:45PM0.02m | ||||||||
 | |  | | | | | | | | | | |  | | | | | | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 24 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 25 |
Feels °C | 23 | 21 | 20 | 21 | 21 | 21 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 22 | 21 | 23 | 23 | 21 | 23 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 12 | SSW 11 | SW 19 | SSW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 15 | SW 14 | SW 14 | SW 14 | SSW 17 | SSW 13 | SSW 14 | SW 16 |
| kJ | 113 | 112 | 75 | 71 | 41 | 184 | 221 | 316 | 309 | 381 | 367 | 353 | 326 | 272 | 208 | 194 | 186 | 261 | 145 | 178 | 251 |
Swell 2 Height (m) Direction Period (s) | S 16 | W 14 | W 13 | W 14 | SW 21 | S 12 | S 12 | S 12 | S 11 | S 11 | SSE 12 | SSE 12 | SSE 12 | W 14 | W 18 | W 16 | W 16 | SSW 13 | W 15 | W 15 | W 15 |
| kJ | 21 | 15 | 14 | 36 | 111 | 42 | 44 | 25 | 23 | 23 | 28 | 28 | 27 | 35 | 96 | 127 | 127 | 111 | 163 | 159 | 157 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 8 | S 15 | SSW 21 | S 13 | W 13 | W 14 | W 13 | W 13 | W 12 | W 12 | W 12 | SSW 20 | SSE 11 | SW 18 | SSW 19 | SW 19 | W 15 | SSW 18 | SSW 18 | SSE 9 |
| kJ | 2 | 2 | 17 | 45 | 31 | 31 | 63 | 31 | 30 | 28 | 26 | 26 | 39 | 25 | 82 | 146 | 94 | 161 | 207 | 209 | 7 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 494 | 452 | 426 | 353 | 379 | 407 | 531 | 412 | 366 | 516 | 559 | 691 | 512 | 373 | 371 | 359 | 310 | 334 | 301 | 256 | 408 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 50 | 62 | 64 | 49 | 58 | 50 | 58 | 56 | 49 | 56 | 64 | 49 | 50 | 50 | 49 | 49 | 56 | 49 | 49 | 56 | 49 |
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.
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