
Surf Forecasts:
Irmas/Leftpoint surf forecast from 16 Jul 2026:
- Most powerful swell: Thursday 23 Jul, 11AM (local time) - 2.5ft (0.8m), 20s period, SSW swell with 528 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 0.8m 20s and forecast to arrive on Thursday (Jul 23) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 14s period and expected on Friday (Jul 17) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 23rd Jul) | 2.5ft (0.8m) 20s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve gotta be straight with you – the next fortnight is a tough watch for this part of the world. There’s one spot in the mix, Irmas/Leftpoint, and it’s a reef setup that’s fairly consistent, but the wind is just not playing ball for most of the run. We’re looking at a long stretch of messy, cross-shore slop, and the forecast is about as exciting as a flat day.
The water’s sitting at 79°F right now, which is just about bang on average for the time of year, so no worries with a wetsuit.
The first proper surf we can talk about doesn’t show up until Thursday, 26 July. Before that, from Thursday, 16 July right through to Wednesday, 25 July, it’s a solid ten-day gap of nothing worth paddling out for – every session is marked as poor surf conditions, with moderate to strong cross-shore winds ruining any chance of a clean face. The swell is tiny and wonky, mostly under 3ft and coming from the wrong direction, so don’t even bother.
Then, on Thursday, 26 July, things start to get a little interesting, but it’s still a battle. The morning sees a 5ft swell from the east with a 17-second period, which is a proper long-period groundswell. The combined energy is strong, at 2425, but the wind is a fresh cross-shore at 22 mph, making it lumpy. The report says it’s marginal, and I’d only point the more experienced crew at it. The afternoon picks up to 5ft from the same east direction, still 17 seconds, but again the wind is a fresh cross-shore, so it’s messy.
Friday, 27 July, is more of the same: 5ft east swell with a 16-second period, still cross-shore wind at 16 to 19 mph. The energy is strong (2248 to 2252), but the wind is just a killer. It’s marginal, not a day to get excited about.
Now, the standout window is the very end of the run. On Tuesday, 28 July, the swell pumps up to 12ft from the east-northeast, with a 14-second period. That’s big, powerful energy – the combined energy is 4337 to 4271, which is very strong. This is expert-only territory, mate. Anything over 8ft and it’s only for the brave. The wind is a moderate cross-shore, which is better than fresh, but it’s still not clean. The reef at Irmas/Leftpoint will handle that long-period groundswell better than a beach break, but it’s still going to be a heavy, challenging day.
Wednesday, 29 July, is the peak – 13ft from the northeast with a 13-second period. That’s huge. The energy is massive, between 4835 and 4921. The wind is a gentle cross-onshore in the morning (fairly choppy) and a moderate cross-shore in the afternoon, so it’s still a bit messy. This is strictly for the big-wave specialists with a death wish. The crowds are listed as “sometimes,” so expect a few other nutters out there.
After that, Thursday, 30 July, drops to 8ft from the north-northeast, but the period is short at 10 seconds, and the wind picks up again. The energy drops to 1112, and it’s back to poor conditions. Friday, 31 July, has 6ft from the east-northeast, but it’s onshore and lumpy, so no thanks.
So, the real best on offer? If you’re an expert, Tuesday, 28 July, and Wednesday, 29 July, are the only days with real size and power. The 12ft to 13ft swell is a monster, but you’ll be fighting the wind. The long period means better shaped waves, but it’s not going to be a smooth, clean day. For the rest of us, save your energy – the first ten days are a write-off, and the end of the run is only for the brave.
Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Thu morning, min 24°C on Thu night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Tue morning. Warm (max 25°C on Sun afternoon, min 24°C on Sun morning). Mainly fresh winds. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||
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) | SSW 16 | SSW 17 | ENE 6 | ENE 7 | ENE 7 | SSW 14 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 16 | S 16 | S 15 | S 14 | S 14 | E 14 | E 13 | SSW 23 | SSW 22 |
Wave Graph | |||||||||||||||||||||
173 | 261 | 165 | 154 | 154 | 165 | 226 | 328 | 394 | 373 | 284 | 232 | 329 | 321 | 339 | 329 | 307 | 320 | 280 | 426 | 480 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on |
High Tide | 4:58PM0.72m | 5:33AM0.31m | 5:35PM0.64m | 6:37AM0.35m | 6:10PM0.55m | 7:46AM0.40m | 6:42PM0.45m | 8:59AM0.45m | 7:13PM0.37m | 10:08AM0.51m | 7:46PM0.29m | 11:08AM0.55m | 8:50PM0.23m | ||||||||
Low Tide | 10:02AM0.01m | 00:20AM0.02m | 10:55AM0.08m | 00:53AM0.03m | 11:55AM0.16m | 1:26AM0.03m | 1:10PM0.23m | 1:58AM0.03m | 2:57PM0.28m | 2:33AM0.04m | 5:25PM0.28m | 3:12AM0.05m | 7:38PM0.23m | 3:57AM0.05m | |||||||
5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 24 | 24 | 24 | 23 | 24 | 23 | 22 | 21 | 22 | 23 | 23 | 24 | 23 | 24 | 24 | 23 | 24 | 24 | 22 | 24 |
Swell 1 Height (m) Direction Period (s) | W 14 | ENE 6 | SW 14 | SW 16 | SSW 12 | SSW 14 | SSW 13 | SSW 14 | S 12 | SSW 13 | S 12 | NNE 8 | S 16 | S 16 | S 15 | S 14 | S 14 | ENE 7 | E 13 | E 13 | E 12 |
150 | 92 | 206 | 125 | 87 | 163 | 141 | 160 | 108 | 93 | 73 | 35 | 329 | 321 | 339 | 329 | 307 | 136 | 280 | 219 | 187 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | NNE 7 | W 14 | SSW 12 | S 16 | NNE 7 | NNE 7 | NNE 8 | W 13 | S 19 | S 18 | S 18 | NNE 8 | SW 18 | E 17 | NE 7 | E 15 | S 13 | S 13 | S 13 | S 13 |
173 | 46 | 104 | 55 | 126 | 31 | 17 | 14 | 28 | 117 | 105 | 158 | 33 | 81 | 138 | 69 | 279 | 277 | 126 | 212 | 202 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 17 | SSW 18 | W 14 | WNW 14 | W 13 | W 13 | W 13 | SSE 9 | NNE 8 | SW 20 | SSW 12 | SW 18 | E 18 | SW 16 | E 7 | SW 16 | E 14 | S 10 | SSW 23 | SSW 22 |
113 | 261 | 102 | 101 | 63 | 55 | 54 | 30 | 8 | 11 | 60 | 45 | 83 | 25 | 69 | 60 | 68 | 320 | 80 | 426 | 480 | |
Wind waves Height (m) Direction Period (s) | NE 7 | — | ENE 6 | ENE 7 | ENE 7 | ENE 6 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 7 | ENE 7 | — | ENE 7 | — | ENE 7 | ENE 7 | ENE 6 |
139 | — | 165 | 154 | 154 | 165 | 226 | 328 | 394 | 373 | 284 | 232 | 163 | 193 | 178 | — | 131 | — | 117 | 121 | 149 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 49 | 56 | 49 | 49 | 49 | 49 | 49 | 56 | 49 | 49 | 49 | 18 | 49 | 20 | 18 | 18 | 49 | 18 | 49 | 50 | 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.










