Surf Forecasts:
Irmas/Leftpoint surf forecast from 14 Aug 2026:
- Most powerful swell: Sunday 16 Aug, 5AM (local time) - 18ft (5.5m), 10s period, E swell with 5,319 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 5.5m 10s and forecast to arrive on Sunday (Aug 16) at 5AM. 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 | 5AM (Sun 16th Aug) | 18ft (5.5m) 10s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the table for the next couple of weeks at our spot.
Alright, straight up, for the foreseeable future, we’re looking at pretty grim conditions. The surf is on offer, you can see the swell in the water, but it’s just completely blown out. There’s a persistent and strong cross-shore wind that’s just destroying the surface. It’s a bit of a cruel joke. You’ll see plenty of swell in the 4 ft range, some bigger days up to 8 ft, and even a couple of solid 12 ft to 13 ft pulses coming in August 15th and 16th, but don’t get your hopes up. The wind is just relentless. There’s a window of hope right at the very end of the period, but let's not get ahead of ourselves.
First up, Thursday afternoon the 13th: We have a 4 ft south swell creeping in on the face of a 25 mph cross-shore wind. It’s messy, it’s choppy, and the combined wave energy is actually pretty high at 951, but it's totally unsurfable. The water temp is sitting at a warm 81°, which is about average for this time of year, but you won’t feel it with all that wind in your face.
Friday the 14th and Saturday the 15th get worse before they get better. We see the swell sizes jump up, with a 8 ft short-period ENE swell on Friday morning (8 secs, combined energy 1051) and then it just pumps up to a raw 12 ft on Saturday morning (combined energy 2314). Wind is a near gale (34 mph) on Saturday, making for a total write-off. Sunday the 16th is still a write-off with storms around and cross-onshore winds.
In fact, from now all the way through the week of the 18th and 19th, it's a constant battle with a moderate to fresh cross-shore wind from the ENE. The swell stays smallish too, mostly between 2 ft and 5 ft, with poor surf conditions across the board. It looks more interesting for kite surfing than paddle surfing.
Now, after that long stretch of nothing, things start to look a little more promising at the very end. On Sunday, August 23rd, the wind finally eases to a light breeze. It’s still cross-onshore at 6 mph, but it's a massive improvement. The swell drops right off though, to just a tiny 2 ft, but the period is a nice long 15 seconds from the SSW. The energy is moderate at 409. It’s a marginal call.
But the standout – and I mean the only real standout in this whole 16-day period – looks to be Friday, August 28th during the afternoon at Irmas/Leftpoint. This is our best bet. We’re looking at a 6 ft swell from the east with a cracking 16-second period. That’s long-period groundswell right there, the kind that wraps around and gives you proper shape on a reef setup like this. The wind finally backs off to a manageable 12 mph cross-shore, swinging around to moderate. The combined energy is a solid 2163. It still won't be glassy, but it will be the cleanest we’ve seen in weeks. With a swell this long, the sets will be well-spaced, making the paddle out a bit easier. Just keep in mind this spot can get crowded sometimes, and that’s a long way off, so the forecast is a bit less certain, but it’s the one to circle on your calendar.
Until then, I’d give it a rest. The ocean is in a bad mood.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Sun afternoon. Warm (max 26°C on Thu night, min 25°C on Thu night). Mainly gales. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Sun night. Warm (max 26°C on Sun night, min 25°C on Mon night). Mainly fresh winds. | ||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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 15 | ENE 8 | ENE 8 | ENE 8 | E 9 | ENE 9 | ENE 10 | E 9 | ENE 9 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | E 8 | E 8 |
Wave Graph | |||||||||||||||||||
537 | 640 | 689 | 1271 | 1915 | 2112 | 3878 | 2166 | 1057 | 599 | 395 | 337 | 254 | 186 | 168 | 168 | 168 | 127 | 100 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross |
High Tide | 4:15AM0.41m | 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 | ||||||||
Low Tide | 10:50PM0.04m | 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 | |||||||
— | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
7:01 | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | |
mm | — | — | — | — | — | 1 | 2 | 4 | 7 | 8 | 2 | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 23 | 23 | 23 | 22 | 22 | 21 | 20 | 20 | 27 | 27 | 27 | 25 | 24 | 23 | 24 | 24 | 24 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 | S 13 | SSE 8 | SSE 7 | S 14 | ENE 7 | S 13 | S 13 | S 13 | ENE 8 | SW 16 | E 8 | E 8 |
537 | 411 | 411 | 243 | 225 | 168 | 189 | 116 | 250 | 79 | 268 | 337 | 170 | 166 | 119 | 168 | 129 | 127 | 100 | |
Swell 2 Height (m) Direction Period (s) | NNW 7 | W 12 | E 11 | ESE 12 | NNW 8 | S 16 | S 18 | S 16 | S 13 | S 14 | S 6 | S 14 | S 5 | SW 17 | SSW 18 | S 13 | S 12 | NNE 7 | NE 7 |
5 | 11 | 89 | 157 | 6 | 80 | 99 | 185 | 87 | 253 | 38 | 257 | 8 | 74 | 121 | 117 | 44 | 59 | 53 | |
Swell 3 Height (m) Direction Period (s) | W 11 | NNW 7 | SSW 18 | NNW 8 | W 11 | W 13 | W 13 | W 12 | S 16 | S 16 | SW 18 | S 6 | SSW 19 | E 9 | W 13 | SW 18 | NNE 7 | S 12 | SW 16 |
10 | 5 | 30 | 6 | 9 | 13 | 13 | 25 | 127 | 81 | 50 | 24 | 37 | 15 | 14 | 79 | 19 | 45 | 129 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | E 9 | ENE 9 | ENE 10 | E 9 | ENE 9 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | ENE 8 | — | — |
517 | 640 | 689 | 1271 | 1915 | 2112 | 3878 | 2166 | 1057 | 599 | 395 | 228 | 254 | 186 | 168 | — | 168 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 49 | 56 | 110 | 218 | 140 | 218 | 139 | 336 | 41 | 6 | 49 | 49 | 18 | 49 | 49 | 49 | 18 | 18 | 18 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











