
Surf Forecasts:
Irmas/Leftpoint surf forecast from 7 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 2AM (local time) - 4ft (1.2m), 16s period, S swell with 762 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 1.2m 16s and forecast to arrive on Thursday (Aug 13) at 2AM. 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 14s period and expected on Thursday (Aug 06) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Thu 13th Aug) | 4ft (1.2m) 16s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let’s cut to the chase.
The straight truth is, the next couple of weeks look pretty poor for a proper paddle. The wind is just not on our side at all. We've got a long stretch of onshore and cross-shore breezes that are going to chop up whatever swell is out there. It’s a classic case of plenty of ocean energy, but none of it any good for us.
Looking at the first proper swell, things start to build on the 8th. The wave height jumps up to 5ft in the morning, but it’s coming from the ENE with a short, weak 6-second period. The wind is a fresh 35 km/h cross-shore, so it’s going to be lumpy and pretty much a write-off. This pattern of messy, cross-shore wind and junky short-period swell hangs around for days. By the 9th and 10th, we’ve got moderate wave energy (562-663), but that ENE swell is still short-period and the wind is still ruining any chance of a clean face.
The middle of the week, around the 12th and 13th, we finally see a change in the swell direction, with a proper S and SSW groundswell showing up. The swell period jumps up to a nice 16-18 seconds, which is a great sign for some real power. This is exactly the sort of long-period swell that a reef like Irmas/Leftpoint (Encyclopedia) would normally eat alive. On the 12th, we’re looking at 3ft of long-period S swell with a strong 888 energy reading. But here’s the kicker: the wind is still a strong, cross-shore 35-40 km/h from the ENE. It's a cruel tease. It's like a beautiful wave machine switched on, but the wind is pointing straight at it, making it a washing machine. Despite the promising groundswell, the score remains zero because of the wind.
The swell is still there on the 13th, with 4ft from the S at 16 seconds, but the wind just gets a bit stronger, up to 40 km/h. This is a day to watch from the beach, not one to surf. As we head into the 14th, the swell swings back around to the ENE and drops to a 7-second period. The size is up there, 7ft, but with that short period and a strong 40 km/h cross-breeze, it’s just going to be a big, lumpy, closed-out mess. Honestly, at this size and with that wind, the setup looks more interesting for kite surfing than paddle surfing.
By the 15th and 16th, the swell tops out at 8ft with strong energy readings (908-1012), but again, it’s that short-period ENE windswell, and the wind hasn’t let up. It’s a lot of water moving, but it’s not clean surfable waves. It's powerful and heavy. That’s pushing well past beginner territory and even for experts, the poor quality means it won't be enjoyable.
The final stretch into the 20th and 21st doesn't offer much hope. We see another pulse of long-period SSW groundswell on the 20th, with a 21-second period, but only 2ft of swell and still 35 km/h cross-shore winds. It’s the same story, just with less size.
So, to be straight with you, there are no good surf options in this entire 16-day window. Not a single standout day. This is a rough stretch where the wind direction is just against us the whole way through. I know it’s a downer, but it won't stay like this forever. Forecasts can change, and sometimes these blank runs don't last as long as they look. But for now, I’d leave the board in the car and maybe find something else to do until this wind sorts itself out.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 26°C on Thu afternoon, min 25°C on Thu afternoon). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Mon morning, min 25°C on Sun afternoon). Mainly fresh winds. | |||||||||||||||||||
Thu 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||
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 | SSW 14 | SSW 14 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | SSW 14 | S 20 | S 18 | S 18 | S 16 |
Wave Graph | ||||||||||||||||||||
149 | 128 | 77 | 73 | 188 | 225 | 299 | 310 | 294 | 373 | 387 | 327 | 240 | 269 | 215 | 269 | 268 | 509 | 498 | 762 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on |
High Tide | 8:39PM0.22m | 11:25AM0.67m | 10:36PM0.19m | 12:21PM0.73m | 00:00AM0.20m | 1:10PM0.77m | 1:01AM0.23m | 1:55PM0.79m | 1:52AM0.27m | 2:36PM0.79m | 2:40AM0.31m | 3:14PM0.76m | 3:27AM0.36m | |||||||
Low Tide | 6:43PM0.21m | 3:25AM0.02m | 7:38PM0.16m | 4:32AM0.00m | 8:16PM0.11m | 5:38AM-0.02m | 8:50PM0.08m | 6:37AM-0.03m | 9:21PM0.06m | 7:31AM-0.04m | 9:52PM0.05m | 8:22AM-0.02m | 10:21PM0.04m | |||||||
— | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 26 |
Feels °C | 25 | 24 | 24 | 23 | 24 | 24 | 23 | 22 | 23 | 22 | 24 | 25 | 25 | 26 | 25 | 25 | 23 | 22 | 22 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SW 14 | SSW 14 | SSW 14 | SSW 14 | SW 18 | SW 18 | SSW 13 | SSW 17 | SSW 12 | S 16 | SSW 15 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 18 | S 18 | S 16 |
81 | 102 | 77 | 73 | 107 | 164 | 154 | 99 | 159 | 86 | 131 | 184 | 191 | 186 | 165 | 269 | 243 | 509 | 498 | 762 | |
Swell 2 Height (m) Direction Period (s) | SSE 11 | SSE 11 | NE 10 | SW 20 | SSW 19 | SSW 13 | SSW 13 | SW 18 | SSW 13 | SSW 16 | SSW 12 | SSW 12 | SSW 11 | SSE 9 | SSW 11 | SSE 6 | S 20 | SSW 13 | SSW 13 | W 12 |
24 | 40 | 23 | 100 | 148 | 67 | 99 | 150 | 96 | 102 | 57 | 56 | 50 | 16 | 40 | 7 | 268 | 218 | 218 | 11 | |
Swell 3 Height (m) Direction Period (s) | NNW 8 | NNW 7 | SW 21 | S 11 | NE 11 | SSW 15 | S 10 | SSE 10 | NE 9 | SSW 18 | NNW 10 | NNW 9 | SSE 9 | SSW 11 | SSE 9 | S 21 | SSE 8 | SSE 8 | W 12 | W 9 |
12 | 11 | 115 | 21 | 31 | 71 | 17 | 19 | 13 | 102 | 33 | 28 | 29 | 23 | 26 | 79 | 14 | 14 | 11 | 2 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 5 | ENE 5 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 6 |
149 | 128 | 62 | 64 | 188 | 225 | 299 | 310 | 294 | 373 | 387 | 327 | 240 | 269 | 215 | 188 | 175 | 147 | 129 | 205 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 22 | 18 | 18 | 49 | 49 | 50 | 56 | 49 | 49 | 50 | 49 | 49 | 49 | 18 | 49 | 20 | 22 | 49 | 56 | 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.











