
Surf Forecasts:
Irmas/Leftpoint surf forecast from 5 Sep 2026:
- Most powerful swell: Saturday 5 Sep, 8AM (local time) - 7.5ft (2.3m), 14s period, ENE swell with 1,970 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 2.3m 14s and forecast to arrive on Saturday (Sep 05) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 14s period and expected on Tuesday (Sep 08) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Sat 5th Sep) | 7.5ft (2.3m) 14s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
Alright, let’s get this straight. I’ve looked at the info for our region, focusing on Irmas/Leftpoint, and I gotta be honest with you – it’s a tough stretch ahead. The whole 16-day window is looking pretty grim. There’s no real standout, no session you’d write home about. The first decent wave that shows up on the books is on Saturday the 5th of September, but even then, it’s a struggle.
The pattern is messy from the get-go. We’re dealing with a solid lump of easterly swell, but the wind is just relentless. It’s a fresh cross-shore breeze from the ENE at 22 mph, which is wrecking any chance of it being clean. The swell’s coming in at 8 ft with a 13-second period from the ENE, and the combined energy is a hefty 2575 (moderate-to-strong wave energy), but it’s all for nothing because the wind’s got it chopped up and lumpy. This is a setup that looks far more interesting for kite surfing than paddle surfing – the wind is just too strong for a decent wave face.
It doesn’t improve. Through Sunday the 6th, the wind stays strong and cross-shore, and the swell drops just a hair to 7 ft. The water temperature is about average for the time of year, so no surprises there. By Monday, the wind swings more onshore, and the swell is still there, but the conditions are just poor. The easterly breeze keeps hammering us all the way through the first week, and every time the swell tries to get its act together, the wind blows it apart.
You’re looking at a long gap with no recommendations. The surf is consistently poor until the middle of the second week. It’s a blank run. For an area like this, that’s a bummer, but it happens. The swell direction stays locked in from the ENE, but the wind never lets up.
Around the 16th of September, there’s a tiny flicker of hope. A longer-period SSW groundswell shows up, with a period of 18 seconds, but the height is only 3 ft. The energy is moderate (1119-1211), and the wind is still a fresh cross-shore from the ENE at 19 mph. This is a marginal call at best. The long period from the SSW means the waves will have that groundswell push, but at a beach and reef setup like Irmas/Leftpoint, a long period swell can be tricky. It’s a promising sign, but way too far out to trust. The forecast confidence is low for that far ahead.
Honestly, for the next two weeks, the only thing consistent is the wind. If you’re desperate for a paddle, keep an eye on that SSW pulse around the 16th, but be prepared for the wind to mess it up. Otherwise, I’d say save your energy and wait for a better window. The forecast can change, but right now, it’s a tough one.
Rusty
Short Range ForecastHeavy rain (total 23mm), heaviest during Sun night. Warm (max 27°C on Sun afternoon, min 25°C on Sat morning). Winds decreasing (fresh winds from the NE on Sat afternoon, light winds from the ENE by Sun night). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue morning, min 25°C on Wed night). Winds increasing (light winds from the ESE on Wed morning, fresh winds from the ENE by Thu morning). | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | ENE 7 | ENE 7 | ENE 7 | ENE 12 | ENE 12 | ENE 7 |
Wave Graph | |||||||||||||||||||||
1679 | 1641 | 1544 | 1240 | 1316 | 1461 | 1593 | 1009 | 1150 | 921 | 705 | 356 | 273 | 257 | 176 | 258 | 203 | 336 | 240 | 797 | 353 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross |
High Tide | 11:03AM0.68m | 11:10PM0.21m | 12:00PM0.71m | 00:14AM0.26m | 12:48PM0.73m | 1:03AM0.31m | 1:30PM0.72m | 1:48AM0.38m | 2:07PM0.69m | 2:29AM0.44m | 2:41PM0.65m | 3:11AM0.50m | 3:13PM0.59m | 3:51AM0.55m | |||||||
Low Tide | 7:10PM0.12m | 4:28AM0.06m | 7:41PM0.09m | 5:40AM0.04m | 8:09PM0.07m | 6:40AM0.03m | 8:36PM0.05m | 7:34AM0.03m | 9:01PM0.04m | 8:25AM0.05m | 9:26PM0.04m | 9:14AM0.08m | 9:49PM0.03m | ||||||||
6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | |
mm | — | — | — | — | 1 | 14 | 3 | 4 | 1 | — | 2 | 2 | 2 | — | — | — | — | — | — | — | 2 |
Temp °C | 26 | 26 | 26 | 26 | 27 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 26 | 26 | 25 |
Feels °C | 24 | 25 | 25 | 25 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 30 | 29 | 27 | 26 | 24 | 22 | 23 | 24 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | ENE 13 | SSW 12 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | SW 14 | SW 14 | SW 11 | ENE 11 | ENE 9 | ENE 8 | ENE 8 | E 12 | E 12 | E 12 | E 12 | ENE 12 | SW 15 | SW 15 |
1679 | 589 | 1544 | 1240 | 1316 | 1461 | 1593 | 1550 | 3095 | 1347 | 705 | 320 | 197 | 149 | 148 | 141 | 141 | 190 | 240 | 232 | 226 | |
Swell 2 Height (m) Direction Period (s) | S 12 | SSE 9 | SSW 12 | SSW 11 | SSW 11 | SSW 12 | SW 14 | ENE 12 | ENE 12 | ENE 11 | SSW 9 | SSW 8 | SSW 8 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 16 | SW 16 | SSW 12 | S 11 |
661 | 47 | 497 | 337 | 302 | 275 | 1147 | 1009 | 1150 | 921 | 405 | 157 | 72 | 257 | 176 | 133 | 129 | 268 | 261 | 45 | 21 | |
Swell 3 Height (m) Direction Period (s) | NNE 10 | NNE 10 | NNE 9 | SSW 16 | SSW 19 | SSW 18 | SSW 17 | ENE 7 | SSW 15 | SSW 15 | W 10 | SSW 14 | SSW 14 | E 13 | SSW 7 | SSW 16 | SW 18 | SSW 12 | SSW 12 | SSE 8 | SSW 8 |
20 | 19 | 15 | 169 | 203 | 437 | 498 | 189 | 507 | 468 | 296 | 356 | 273 | 161 | 38 | 179 | 155 | 79 | 45 | 14 | 6 | |
Wind waves Height (m) Direction Period (s) | — | ENE 13 | — | — | — | — | — | SSE 7 | — | S 9 | — | — | — | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 12 | ENE 7 |
— | 1641 | — | — | — | — | — | 143 | — | 258 | — | — | — | — | 147 | 258 | 203 | 336 | 236 | 797 | 353 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 49 | 49 | 18 | 49 | 49 | 18 | 58 | 41 | 57 | 4 | 4 | 6 | 49 | 49 | 49 | 49 | 109 | 18 | 49 | 50 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










