
Surf Forecasts:
Irmas/Leftpoint surf forecast from 31 Jul 2026:
- Most powerful swell: Saturday 1 Aug, 11AM (local time) - 11ft (3.5m), 8s period, E swell with 1,398 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 3.5m 8s and forecast to arrive on Saturday (Aug 01) at 11AM. 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 15s period and expected on Friday (Jul 31) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Sat 1st Aug) | 11ft (3.5m) 8s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve got to be straight with you – the outlook for Irmas/Leftpoint over the next 16 days is a tough one. We’re lookin’ at a long stretch of messy, blown-out conditions, with a few tiny windows of something surfable, but nothin’ to get excited about. The water temp is about average for this time of year, so at least you won’t need a thick wetsuit.
The first real chance of a wave doesn’t roll in until Tuesday, August 4th. Even then, it’s only marginal. We’ve got a moderate cross-shore wind from the NE at 12 mph, with swell from the ENE at 6 ft and a period of 11 seconds. That’s a groundswell, which is promising for shape, but the cross-chop will make it feel lumpy. The combined energy is moderate (756). It’s a “maybe” day – not one to call in sick for.
Wednesday the 5th and Thursday the 6th are back to poor surf – cross-onshore winds and choppy, lumpy conditions. The swell drops to 5 ft on Wednesday with a short 9-second period, and the energy is weak (409). Thursday’s even worse, with a 6-second period and a cross-shore that’s just messy.
We’ve got a long gap of poor conditions right through until Friday, August 14th. That’s over a week of nothing worth paddling out for. The wind stays strong, the swell is either too small or too short-period, and the chop is relentless.
On Friday the 14th, we finally see a glimmer. The afternoon brings a light cross-onshore breeze at 6 mph, with a tiny 2 ft swell from the S, but the period is a very long 19 seconds. That’s a proper groundswell, and the energy is moderate (546). It’s a marginal call – the waves will be small and clean-ish, but the tide needs to be right. This is your best bet across the whole 16 days, and it’s a low-key, glassy session for the patient surfer.
Saturday the 15th sees a bit more size (4 ft from the S at 16 seconds), but the wind picks up to a moderate cross-onshore, bringing back the chop. The energy is moderate (752), but it’s not clean enough to be a standout.
Honestly, the standout here is the afternoon of Friday the 14th. It’s the only time the wind eases and the swell direction lines up. It’s a reef break, so that long-period groundswell will wrap in nicely, but it’s going to be small. If you’re desperate, that’s your window. Otherwise, this stretch is a write-off. The breaks are consistent, but the conditions just aren’t cooperating.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 27°C on Thu night, min 25°C on Fri afternoon). Winds increasing (moderate winds from the E on Thu night, strong winds from the ENE by Fri night). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Mon afternoon, min 25°C on Sun night). Mainly fresh winds. | ||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | E 7 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 |
Wave Graph | |||||||||||||||||||
311 | 408 | 551 | 1268 | 1398 | 1098 | 1020 | 908 | 804 | 646 | 439 | 379 | 902 | 680 | 597 | 446 | 315 | 268 | 256 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross-on |
High Tide | 4:08AM0.30m | 4:25PM0.65m | 4:55AM0.33m | 4:53PM0.60m | 5:48AM0.38m | 5:22PM0.53m | 6:48AM0.43m | 5:53PM0.45m | 7:57AM0.48m | 6:26PM0.37m | 9:10AM0.55m | 7:10PM0.29m | |||||||
Low Tide | 11:13PM0.07m | 9:38AM0.05m | 11:37PM0.06m | 10:23AM0.11m | 00:02AM0.05m | 11:17AM0.16m | 00:29AM0.04m | 12:27PM0.23m | 00:59AM0.04m | 2:07PM0.27m | 1:37AM0.03m | 4:33PM0.27m | 2:24AM0.02m | ||||||
— | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | |
7:09 | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 28 | 24 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 23 | 24 | 23 | 26 | 26 | 26 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 13 | E 15 | E 16 | E 15 | SSW 14 | E 14 | E 14 | E 14 | E 14 | E 13 | E 12 | E 13 | ENE 12 | ENE 11 | ENE 11 | SSW 11 | SSW 11 | ENE 9 | SSW 14 |
166 | 216 | 301 | 267 | 127 | 257 | 249 | 242 | 189 | 125 | 113 | 156 | 902 | 680 | 597 | 48 | 40 | 268 | 82 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | S 12 | SW 15 | SW 15 | S 12 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SW 12 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SW 15 | SW 16 | SSW 15 | SSE 12 |
177 | 153 | 239 | 176 | 42 | 123 | 131 | 133 | 68 | 40 | 53 | 29 | 48 | 46 | 43 | 57 | 61 | 88 | 49 | |
Swell 3 Height (m) Direction Period (s) | E 16 | SW 16 | S 12 | S 12 | S 15 | S 11 | S 11 | N 9 | N 9 | SSW 13 | SW 13 | SW 13 | SSE 9 | SSE 12 | SW 16 | SSE 13 | S 13 | SSW 11 | SSW 10 |
127 | 206 | 106 | 72 | 5 | 39 | 23 | 15 | 14 | 58 | 42 | 41 | 8 | 30 | 68 | 58 | 54 | 39 | 18 | |
Wind waves Height (m) Direction Period (s) | E 7 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | — | ENE 10 | ENE 9 | — | ENE 8 |
311 | 408 | 551 | 1268 | 1398 | 1098 | 1020 | 908 | 804 | 646 | 439 | 379 | — | — | — | 446 | 315 | — | 256 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 18 | 58 | 110 | 58 | 139 | 112 | 112 | 60 | 139 | 49 | 20 | 51 | 18 | 18 | 6 | 17 | 18 | 18 | 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.











