Surf Forecasts:
Irmas/Leftpoint surf forecast from 5 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 5PM (local time) - 5ft (1.5m), 11s period, ENE swell with 496 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 1.5m 11s and forecast to arrive on Tuesday (Aug 04) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 15s period and expected on Wednesday (Aug 05) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Tue 4th Aug) | 5ft (1.5m) 11s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what’s on offer at Irmas/Leftpoint for the next couple of weeks.
Honestly, it’s a tough stretch ahead. The pattern is pretty grim right out of the gate with constant cross-shore winds messing things up. For the first week, from Tuesday the 4th right through to Sunday the 10th of August, it’s just a write-off. We’ve got a moderate to fresh breeze from the ENE to NE every single session, and the wave comment says it all – poor conditions. The swell is there, around 4ft to 6ft from the ENE, but with that wind direction it’s all just cross-chop and lumpy. Not worth paddling out. The water temp is sitting at a normal 80°F for the time of year.
The situation doesn't really improve much in the second week. Monday the 11th still looks poor, and from the 12th to the 14th we see a shift to a longer period S swell (14 to 18 seconds), and the combined energy gets into the strong range – we’re talking 1058 to 1112 on the 12th, and 1019 on the 13th. But again, that fresh ENE breeze is just tearing it up. It’s a classic case of the wind ruining an otherwise interesting groundswell. The wave energy is high, but the surf quality is zero.
Now, there is a bit of a blip right at the end of the forecast. On Sunday the 16th and Monday the 17th of August, we get some serious size. The swell jumps to 12ft to 13ft from the ENE, with energy readings hitting 2804 on Monday morning. That’s very strong, heavy stuff. But the wind is still a cross-shore. For a reef break like Irmas/Leftpoint, that’s going to be a wild, probably dangerous, and messy affair. It’s a standout for size, but only for experts with a death wish, and even then, the conditions are marginal. The longer period ENE swell (8-9 seconds) won't help much either, making it fat and sectiony on a reef.
So, to be straight with you, there’s no clean surf in this entire 16-day window. The best of a bad bunch is that massive swell on the 16th and 17th, but it’s a promise of power, not perfection. For most of us, the kites are going to be more fun on these waters than a surfboard.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Tue afternoon, min 24°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Fri morning, min 24°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 6 | ENE 8 | ENE 8 | SSW 14 | SSW 14 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 597 | 496 | 451 | 312 | 199 | 181 | 90 | 163 | 128 | 77 | 73 | 229 | 268 | 326 | 443 | 363 | 336 | 375 | 385 | 349 | 284 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross |
High Tide | 6:26PM0.37m | 9:10AM0.55m | 7:10PM0.29m | 10:22AM0.61m | 8:39PM0.22m | 11:25AM0.67m | 10:36PM0.19m | 12:21PM0.73m | 00:00AM0.20m | 1:10PM0.77m | 1:01AM0.23m | 1:55PM0.79m | 1:52AM0.27m | ||||||||
Low Tide | 2:07PM0.27m | 1:37AM0.03m | 4:33PM0.27m | 2:24AM0.02m | 6:43PM0.21m | 3:25AM0.02m | 7:38PM0.16m | 4:32AM0.00m | 8:16PM0.11m | 5:38AM-0.02m | 8:50PM0.08m | 6:37AM-0.03m | 9:21PM0.06m | ||||||||
 | |  | | | | | | | | | | |  | | | | |  | | | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — |
Temp °C | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 |
Feels °C | 26 | 26 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 22 | 22 | 23 | 23 | 23 | 23 | 25 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | SW 15 | ENE 8 | SSW 14 | SW 14 | ENE 7 | ENE 7 | SSW 14 | SW 18 | SW 18 | SSW 13 | SSW 17 | SSW 12 | S 16 | SSW 15 | SSW 15 | ENE 7 |
| kJ | 597 | 496 | 451 | 312 | 199 | 54 | 58 | 81 | 102 | 21 | 34 | 107 | 164 | 154 | 99 | 159 | 86 | 131 | 184 | 179 | 284 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 15 | S 12 | SSW 14 | SSE 11 | SSE 11 | SSW 14 | SSW 14 | SSW 19 | SW 13 | SSW 14 | SW 18 | SSW 13 | SSW 18 | SSW 12 | SSW 12 | SSW 12 | SSW 15 |
| kJ | 46 | 52 | 47 | 38 | 88 | 46 | 82 | 24 | 40 | 77 | 73 | 148 | 44 | 63 | 150 | 96 | 102 | 57 | 56 | 46 | 184 |
Swell 3 Height (m) Direction Period (s) | SSE 12 | SW 16 | SW 15 | SSE 13 | SSW 11 | SSW 10 | SSE 12 | NNW 8 | NNW 7 | NE 10 | SSE 11 | S 11 | SSW 15 | SW 12 | SSE 10 | SSE 10 | SW 16 | SW 16 | SSE 10 | SSE 10 | SSE 9 |
| kJ | 30 | 68 | 57 | 57 | 46 | 20 | 26 | 12 | 11 | 24 | 39 | 21 | 71 | 39 | 19 | 19 | 66 | 64 | 32 | 18 | 28 |
Wind waves Height (m) Direction Period (s) | — | — | ENE 10 | — | — | ENE 9 | ENE 6 | ENE 8 | ENE 8 | ENE 5 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 |
| kJ | — | — | 292 | — | — | 181 | 90 | 163 | 128 | 35 | 41 | 229 | 268 | 326 | 443 | 363 | 336 | 375 | 385 | 349 | 173 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 25 | 18 | 18 | 18 | 18 | 18 | 18 | 49 | 20 | 49 | 49 | 49 | 56 | 51 | 49 | 49 | 49 | 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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