Surf Forecasts:
Irmas/Leftpoint surf forecast from 27 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 5AM (local time) - 8ft (2.5m), 10s period, ENE swell with offshore winds.
- Most powerful swell: Monday 27 Jul, 11PM (local time) - 8ft (2.5m), 14s period, ENE swell with 2,523 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 5AM (local time) - 8ft (2.5m), 10s period with ENE swell.
Best Forecast Surf Conditions for Irmas/Leftpoint this week:
The surf forecast for Irmas/Leftpoint over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 29) at 5AM. The primary swell is predicted to be 2.5m and 10s period with a secondary swell of 0.7m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Irmas/Leftpoint in the next 16 days are 2.5m 14s and forecast to arrive on Monday (Jul 27) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Tuesday (Jul 28) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 29th Jul) | 8ft (2.5m) 10s |
| Best Surf | 5AM (Wed 29th Jul) | 8ft (2.5m) 10s |
| Most Powerful | 11PM (Mon 27th Jul) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
Alright, Rusty here again, but I’ll give it to you in feet and miles per hour now.
The only spot in the mix is Irmas/Leftpoint, a reef that breaks fairly consistently. It catches east swell, gets a crowd now and then, but the water’s just about perfect at 27°C – dead average for this time of year. No thermal surprises.
Starting now, Sunday the 26th of July afternoon, there’s 4ft of east swell with a 15-second period and solid 1528 energy, but the wind is a fresh cross-shore easterly at 22 mph, chopping it up. It’s a write-off.
Monday the 27th: still cross-shore winds from the northeast at 19 mph, swell 5-5ft east, period dropping to 14 seconds. Marginal.
Tuesday the 28th of July is your day. Morning: 8ft east swell, 13-second period, cross-offshore north-northeast wind at 16 mph, clean conditions, and combined energy at a strong 2178. That’s a proper groundswell wrapping around the reef. Afternoon kicks it up to 8ft east, 12-second period, cross-offshore north-northeast at 19 mph, energy at a very strong 2684. This is the peak: powerful, long-period sets, and it’s clean. But at 8ft it’s strictly for experts; beginners, give it a miss.
Wednesday the 29th goes downhill. 7ft east-northeast, but the period crashes to 10 seconds, with a light cross-onshore wind. Not clean.
From Thursday the 30th onward, it’s mostly poor: cross-shore winds from the east at 19-28 mph, lumpy, choppy, and small short-period swell. Saturday the 1st of August hits 10ft but with only an 8-second period and strong cross-winds at 28 mph – that’s a blown-out mess, better for kites than paddles.
Tuesday the 4th of August shows a pulse: 6ft east-northeast, 12-second period, energy back to 1055, but the cross-shore breeze keeps it from being clean. It's a maybe.
After that, it’s a long stretch of poor to marginal conditions all the way through to August 10th. Even a couple of 7-8ft bumps on the 9th are ruined by 7-second period and messy winds.
The one to circle: Tuesday the 28th of July at Irmas/Leftpoint. That’s your clean, powerful window. The rest is mostly a struggle.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed morning. Warm (max 26°C on Tue morning, min 24°C on Sun night). Winds decreasing (fresh winds from the ENE on Sun afternoon, light winds from the SSW by Wed morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Wed afternoon, min 25°C on Wed night). Winds increasing (light winds from the E on Wed night, strong winds from the ENE by Fri night). | |||||||||||||||||||
Sun 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | ||||||||||||||
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) | E 15 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 602 | 808 | 840 | 915 | 1693 | 1739 | 2237 | 1969 | 787 | 475 | 394 | 280 | 273 | 405 | 518 | 481 | 1132 | 1117 | 1072 | 1302 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross |
High Tide | 1:32AM0.20m | 2:28PM0.68m | 2:09AM0.22m | 2:58PM0.69m | 2:46AM0.24m | 3:28PM0.69m | 3:26AM0.26m | 3:57PM0.68m | 4:08AM0.30m | 4:25PM0.65m | 4:55AM0.33m | 4:53PM0.60m | ||||||||
Low Tide | 9:38PM0.11m | 7:06AM0.01m | 10:01PM0.09m | 7:44AM-0.00m | 10:25PM0.09m | 8:21AM0.00m | 10:49PM0.08m | 8:58AM0.02m | 11:13PM0.07m | 9:38AM0.05m | 11:37PM0.06m | 10:23AM0.11m | 00:02AM0.05m | |||||||
 |  |  | |  | | | |  | | | | | | | | | | | | |
 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 26 | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 21 | 21 | 22 | 23 | 24 | 27 | 26 | 25 | 29 | 29 | 30 | 27 | 26 | 24 | 23 | 21 | 21 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | E 15 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | S 14 | S 13 | S 13 | E 15 | E 15 | SW 15 | E 15 | E 14 | E 14 |
| kJ | 602 | 808 | 840 | 915 | 1693 | 1739 | 2237 | 1969 | 787 | 475 | 394 | 181 | 173 | 166 | 219 | 279 | 176 | 357 | 334 | 264 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 15 | S 14 | SSW 14 | SSW 14 | SSW 14 | S 13 | S 14 | SSW 13 | SW 18 | SSW 18 | SSW 16 | SW 16 | SW 15 | SSW 12 | SSW 14 | SSW 14 | SW 14 |
| kJ | 452 | 333 | 292 | 222 | 200 | 143 | 143 | 195 | 125 | 189 | 133 | 154 | 207 | 177 | 206 | 239 | 47 | 127 | 125 | 97 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 12 | S 10 | SSE 10 | S 10 | SSE 10 | SSE 10 | SW 21 | SSW 15 | SSW 20 | S 15 | E 19 | E 17 | E 16 | S 12 | S 12 | N 8 | S 12 | S 11 | S 11 |
| kJ | 19 | 3 | 8 | 11 | 8 | 10 | 9 | 18 | 74 | 37 | 69 | 27 | 53 | 129 | 113 | 106 | 11 | 42 | 39 | 23 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | NE 7 | NE 7 | NNE 7 | NNE 9 | NNE 9 | — | SE 3 | SE 4 | — | ENE 8 | ENE 8 | ENE 7 | E 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 455 | 352 | 301 | 318 | 178 | 286 | 295 | — | 2 | 3 | — | 280 | 273 | 405 | 518 | 481 | 1132 | 1117 | 1072 | 1302 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 58 | 49 | 49 | 49 | 20 | 6 | 46 | 6 | 2 | 4 | 4 | 41 | 49 | 50 | 58 | 62 | 109 | 112 | 112 | 56 |
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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