
Surf Forecasts:
Irmas/Leftpoint surf forecast from 19 Jul 2026:
- Most powerful swell: Thursday 23 Jul, 8AM (local time) - 6ft (1.9m), 12s period, ENE swell with 969 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 1.9m 12s and forecast to arrive on Thursday (Jul 23) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 8s period and expected on Sunday (Jul 19) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Thu 23rd Jul) | 6ft (1.9m) 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 coming down the line for us.
Honestly, looking at the next couple of weeks, it's a bit of a slow burn. We're looking at a long stretch of pretty average conditions before things really fire up. The first week or so is mostly a write-off, with messy cross-shore winds and lumpy surf. The standout action is definitely saved for the very end of the forecast, and it's a doozy, but it's a long way off.
Right now, for Irmas/Leftpoint, the pattern is pretty grim. Saturday the 18th kicks off with a strong ENE breeze at 25 mph, whipping up a 8 ft cross-shore chop. The combined energy is moderate (644), but the wind is just ruining it. It's the same story through the weekend and into the next week. The swell does drop right down to 2 ft and 3 ft mid-week, with some long-period energy from the South (16-24 seconds), but with that persistent cross-shore wind, it's just not going to be clean. The combined energy stays moderate, hitting 1002 on the 22nd, but it's all for nothing with the wind.
Thursday the 23rd is just more of the same – strong breeze and messy conditions. It's not until the tail end of July that we see any light. The 24th and 25th are still poor, with the swell jumping back up to 7-8 ft but the wind is still a fresh cross-shore mess. The energy is starting to build though, hitting 1365 on the 24th. The weekend of the 26th and 27th sees the swell start to get some real grunt, with 5 ft to 7 ft of E swell at a very long period of 15-16 seconds. The energy is getting strong (up to 2431), but that cross-shore wind is still a problem, keeping the surf in the "marginal" category.
Now, keep your eyes on the prize. The real action is locked in for Wednesday the 29th and Thursday the 30th of July. This is the one to circle. On Wednesday the 29th morning, the swell is already a solid 13 ft from the East with a 14-second period, and the combined energy is a massive 7407. The wind is a moderate 16 mph, but it's a cross-shore. Then, Wednesday afternoon is where it gets interesting. The swell jumps to a huge 20 ft from the ENE (14 seconds) and the energy skyrockets to 14147. The wind swings to a light NNE breeze at 16 mph, which is actually a cross-offshore wind. That means clean conditions. This is a serious, expert-only wave. If you're not experienced, stay well clear.
Then Thursday the 30th morning is the absolute peak. The swell drops a touch to 12 ft from the ENE, but the period shortens to 10 seconds. The energy is still very strong at 3418. The real beauty is the wind: a light NNE breeze at just 6 mph, also cross-offshore. The report says "excellent surf conditions for experienced surfers". This is your window. It's going to be a heavy, powerful reef break, but with clean conditions. The water temp is a normal 80° for this time of year, so no surprises there.
After that, it all falls apart again. The wind picks up on the 31st and we're back to messy, weak, short-period surf. The last few days of the first week of August look like a total write-off with tiny, weak swell and strong cross-shore winds.
So, to sum it up: the first two weeks are a washout. Don't bother. The one and only standout is Wednesday the 29th and Thursday the 30th of July at Irmas/Leftpoint. Thursday morning is the best bet for clean, powerful waves, but it's strictly for the experienced crew. The rest of the time, it's a long wait.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue morning. Warm (max 26°C on Sat afternoon, min 24°C on Sat night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Tue afternoon, min 24°C on Tue night). Mainly strong winds. | |||||||||||||||||||
Sat 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||
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 | ENE 8 | ENE 8 | ENE 8 | E 8 | S 16 | S 16 | S 15 | S 14 | S 14 | ENE 7 | S 24 | SSW 23 | SSW 22 | ENE 7 | SSW 20 | E 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | ||||||||||||||||||||
450 | 494 | 361 | 277 | 279 | 329 | 321 | 343 | 329 | 307 | 277 | 404 | 426 | 480 | 435 | 395 | 679 | 456 | 621 | 621 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross | cross | cross | cross-on | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on |
High Tide | 6:10PM0.55m | 7:46AM0.40m | 6:42PM0.45m | 8:59AM0.45m | 7:13PM0.37m | 10:08AM0.51m | 7:46PM0.29m | 11:08AM0.55m | 8:50PM0.23m | 11:59AM0.59m | 10:38PM0.19m | 12:42PM0.62m | 11:56PM0.19m | |||||||
Low Tide | 1:26AM0.03m | 1:10PM0.23m | 1:58AM0.03m | 2:57PM0.28m | 2:33AM0.04m | 5:25PM0.28m | 3:12AM0.05m | 7:38PM0.23m | 3:57AM0.05m | 8:24PM0.18m | 8:50PM0.15m | |||||||||
— | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | |
7:15 | — | — | 7:14 | — | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 22 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 12 | S 12 | SSW 13 | NNE 8 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 | S 13 | S 13 | E 12 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 |
213 | 113 | 75 | 95 | 23 | 329 | 321 | 343 | 329 | 307 | 277 | 219 | 212 | 193 | 412 | 395 | 469 | 329 | 340 | 298 | |
Swell 2 Height (m) Direction Period (s) | W 13 | W 13 | S 19 | S 18 | S 18 | SW 18 | SW 18 | SW 16 | SW 17 | SW 16 | E 13 | E 12 | E 11 | S 13 | S 12 | S 11 | S 11 | S 12 | S 12 | S 20 |
30 | 28 | 117 | 105 | 158 | 83 | 81 | 69 | 72 | 68 | 119 | 138 | 163 | 157 | 97 | 89 | 56 | 103 | 69 | 293 | |
Swell 3 Height (m) Direction Period (s) | SSE 9 | S 20 | W 12 | NNE 8 | SSW 12 | W 11 | W 12 | E 12 | E 12 | E 11 | SSW 26 | S 24 | SSW 23 | SSW 22 | SSW 16 | SW 16 | S 13 | SSW 15 | S 21 | S 12 |
8 | 32 | 11 | 14 | 45 | 10 | 11 | 12 | 25 | 39 | 224 | 404 | 426 | 480 | 100 | 127 | 85 | 130 | 231 | 68 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 7 |
450 | 494 | 361 | 277 | 279 | 263 | 272 | 197 | 158 | 140 | 255 | 153 | 189 | 350 | 435 | 326 | 679 | 456 | 621 | 621 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 56 | 56 | 51 | 49 | 56 | 18 | 18 | 49 | 18 | 49 | 49 | 49 | 49 | 56 | 49 | 56 | 63 | 49 | 50 | 139 |
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.










