Surf Forecasts:
Irmas/Leftpoint surf forecast from 26 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 8AM (local time) - 10ft (3.0m), 11s period, ENE swell with cross-offshore winds.
- Most powerful swell: Wednesday 29 Jul, 2AM (local time) - 11ft (3.5m), 12s period, ENE swell with 3,085 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 8AM (local time) - 10ft (3.0m), 11s 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 8AM. The primary swell is predicted to be 3.0m and 11s period with a secondary swell of 0.7m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Irmas/Leftpoint in the next 16 days are 3.5m 12s and forecast to arrive on Wednesday (Jul 29) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Jul 28) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 29th Jul) | 10ft (3.0m) 11s |
| Best Surf | 8AM (Wed 29th Jul) | 10ft (3.0m) 11s |
| Most Powerful | 2AM (Wed 29th Jul) | 11ft (3.5m) 12s |
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 menu for the next couple of weeks.
We’re looking at a pretty slim pickings period, to be honest. The forecast is showing a long stretch of messy, lumpy conditions with hardly any clean windows. The only spot on the radar is Irmas/Leftpoint, a reef setup that’s fairly consistent but needs the right conditions to shine. The water temp is sitting at 80°, which is about average for the time of year right now.
The first real chance of anything decent doesn’t arrive until Tuesday, July 28th, but even then it’s marginal. There’s a 10 ft swell from the east on Tuesday afternoon, with a period of 13 seconds, and the wind is cross-offshore, so the face will be clean. The combined energy is strong (2998), so there’s plenty of power. But at that size, this is for experienced surfers only – it’s too big for beginners.
The standout session, and the only one I’d get excited about, is Wednesday morning, July 29th. The swell is still a solid 10 ft, coming from the east-northeast, with a 10-second period. The wind is light and cross-offshore out of the northwest at just 6 mph, which means glassy, clean conditions. The combined energy is still very strong (1827), and the reef will handle that size well. This is the best on offer, but it’s strictly for the experienced crew.
After that, it’s a long, bleak run right through to the end of the 16-day window. From Wednesday afternoon onward, the wind swings onshore or stays cross-shore, with the swell dropping and the period shortening. By Thursday, July 30th, the wind is howling from the east-northeast at 15 to 22 mph, making for choppy, lumpy waves. The conditions are poor, with scores reflecting that. From Friday, July 31st, through to Monday, August 10th, it’s a relentless grind of cross-shore winds, messy chop, and weak, short-period swell. There’s a gap of over a week with no worthwhile surf at all.
In short: if you’re an expert, you’ve got one window – Wednesday morning, July 29th – at Irmas/Leftpoint. For everyone else, keep the board in the car and wait for a better forecast.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue morning. Warm (max 26°C on Tue afternoon, min 24°C on Sun night). Winds decreasing (strong winds from the ENE on Sun afternoon, light winds from the N by Tue night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Warm (max 27°C on Thu afternoon, min 25°C on Wed morning). Winds increasing (calm on Wed afternoon, strong winds from the ENE by Fri afternoon). | ||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | |||||||||||||||
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 8 | E 15 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | ENE 12 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 469 | 602 | 808 | 840 | 915 | 1667 | 1793 | 2692 | 3085 | 1666 | 771 | 439 | 373 | 273 | 405 | 551 | 471 | 965 | 936 | 952 | 1091 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross |
High Tide | 1:55PM0.66m | 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 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — |
mm | — | — | — | — | — | — | 2 | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 22 | 21 | 22 | 22 | 23 | 23 | 26 | 26 | 25 | 29 | 31 | 28 | 26 | 28 | 25 | 25 | 21 | 22 | 21 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | E 15 | E 15 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | ENE 12 | ENE 10 | ENE 9 | ENE 8 | S 14 | S 13 | S 13 | E 15 | E 15 | E 15 | E 15 | E 15 | E 15 |
| kJ | 435 | 602 | 808 | 840 | 915 | 1667 | 1793 | 2692 | 3085 | 1666 | 771 | 439 | 181 | 225 | 166 | 219 | 282 | 267 | 353 | 348 | 343 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | S 13 | S 14 | SSW 13 | SW 18 | SSW 18 | SSW 16 | S 12 | SW 15 | SW 15 | SSW 14 | SSW 14 | SW 14 |
| kJ | 469 | 452 | 333 | 292 | 222 | 213 | 143 | 189 | 192 | 87 | 189 | 133 | 154 | 207 | 177 | 113 | 188 | 176 | 129 | 125 | 97 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 10 | S 12 | S 10 | S 10 | S 10 | SSE 10 | — | S 15 | SSW 15 | SSW 20 | S 15 | E 19 | E 17 | E 16 | SW 16 | S 12 | SSW 12 | S 12 | S 11 | S 11 |
| kJ | 19 | 19 | 3 | 8 | 8 | 8 | 9 | — | 4 | 74 | 37 | 69 | 27 | 53 | 127 | 206 | 106 | 47 | 42 | 39 | 22 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | — | — | SSE 3 | SE 3 | ENE 8 | ENE 8 | ENE 7 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 419 | 482 | 376 | 330 | 303 | 178 | 142 | 117 | — | — | 3 | 3 | 373 | 273 | 405 | 551 | 471 | 965 | 936 | 952 | 1091 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 49 | 60 | 49 | 49 | 49 | 6 | 16 | 51 | 6 | 0 | 2 | 2 | 18 | 49 | 49 | 56 | 68 | 109 | 63 | 64 | 58 |
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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