
Surf Forecasts:
Irmas/Leftpoint surf forecast from 6 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 2AM (local time) - 4.5ft (1.3m), 16s period, S swell with 890 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 1.3m 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) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.
The Lowdown
Alright, let’s break down what’s happening over the next couple of weeks. I’m not going to sugarcoat it: the forecast is a bit of a bummer. We’ve got a lot of wind and chop to deal with, and it’s going to keep the surf poor more often than not.
The pulse out of the east-northeast builds over the weekend of the 9th and 10th. Swell gets up to 1.8m-1.9m, and the combined energy is strong, hitting the 600-700 range (687) on Sunday afternoon. But the cross-shore breeze is going to make it lumpy. It’s not the kind of day you’re burning gas for.
Your best bet looks like the middle of the week, around Wednesday the 12th. That’s when we get a push of long-period south swell – 18 seconds – with strong combined energy, hitting 949 by the afternoon. This is a groundswell with some juice, and at Irmas/Leftpoint, a reef, it might have a bit more shape than the beach breaks. The wind is still cross-shore, which is a shame, so it won’t be glassy, but it’s the most promising surf up to that point. The direction is southerly, which isn’t ideal for this spot that prefers an ESE angle, so it won't be a perfect match.
Then we get the big, messy stuff. From the 14th, that ENE swell ramps up fast. We go from 2.5m on Friday morning to 3.5m by Saturday morning, with strong cross-onshore winds at 45 km/h. The combined energy explodes, hitting a massive 2203 on Saturday afternoon. With that much size and wind, this is not a paddle surfing day. It’s a full-on, hold-onto-your-hats, possibly-kite-surfing type of situation. The wave faces will be big and blown out. The 17th and 18th still have 3.0m of swell, but the wind stays fresh and cross, keeping the surface messy.
As we head into the 19th, the swell drops back to 1.7m-1.8m, but we’ve got a chance of thunderstorms and a fresh easterly breeze. Still not clean. The last few days of the window, the swell fades to 1.2m-1.3m, but that ENE wind at 35 km/h is still cross-shore. Not great.
So, the long and short of it is, we have only one real window of opportunity, and even that is compromised. The Wednesday to Thursday of the 12th and 13th is your best shot. Water temp is about average for the season at 27°, so a spring suit is fine.
Keep the faith.
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Thu afternoon, min 25°C on Thu morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sun afternoon, min 25°C on Sun morning). Mainly fresh winds. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 6 | SSW 14 | ENE 8 | SSW 14 | ENE 5 | ENE 6 | ENE 6 | ENE 6 | 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 | |||||||||||||||||||||
82 | 81 | 107 | 77 | 74 | 182 | 252 | 260 | 312 | 328 | 397 | 319 | 259 | 234 | 245 | 186 | 269 | 365 | 515 | 620 | 890 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on |
High Tide | 10:22AM0.61m | 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 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
— | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 26 |
Feels °C | 25 | 26 | 24 | 25 | 24 | 23 | 24 | 24 | 22 | 23 | 24 | 23 | 25 | 25 | 24 | 25 | 24 | 24 | 23 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | SW 14 | SSW 14 | SSW 14 | SSW 14 | SW 18 | SW 18 | SSW 13 | SSW 13 | SSW 12 | S 16 | ENE 7 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 18 | S 18 | S 16 |
59 | 54 | 102 | 77 | 73 | 107 | 164 | 154 | 99 | 96 | 86 | 131 | 259 | 191 | 186 | 165 | 269 | 243 | 515 | 620 | 890 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSE 11 | NE 10 | SW 20 | SSW 19 | SSW 13 | SSW 14 | SW 18 | SSW 17 | SSW 16 | SSW 12 | SSW 15 | SSW 11 | SSE 9 | SSW 11 | SSE 9 | S 20 | SSW 13 | SSW 13 | W 12 |
82 | 81 | 40 | 23 | 100 | 148 | 67 | 63 | 150 | 108 | 102 | 57 | 184 | 49 | 16 | 41 | 25 | 365 | 222 | 218 | 11 | |
Swell 3 Height (m) Direction Period (s) | SSE 12 | SSE 11 | NNW 7 | SW 21 | SSE 11 | NE 11 | SSW 15 | SW 12 | SSE 10 | SSW 17 | SSW 18 | NNW 10 | SSW 12 | NNW 9 | SSW 11 | SSE 9 | S 21 | SSE 9 | SSE 9 | W 10 | S 20 |
44 | 24 | 11 | 115 | 23 | 31 | 71 | 39 | 19 | 96 | 102 | 33 | 56 | 25 | 23 | 25 | 79 | 7 | 7 | 8 | 8 | |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 6 | ENE 8 | ENE 5 | ENE 5 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | NE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 |
64 | 57 | 107 | 62 | 74 | 182 | 252 | 260 | 312 | 328 | 397 | 319 | 77 | 234 | 245 | 186 | 181 | 157 | 135 | 111 | 135 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 49 | 20 | 18 | 49 | 49 | 49 | 50 | 56 | 50 | 49 | 50 | 49 | 49 | 20 | 20 | 49 | 20 | 20 | 49 | 49 | 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.











