
Surf Forecasts:
Irmas/Leftpoint surf forecast from 10 Aug 2026:
- Best quality surf: Sunday 16 Aug, 11AM (local time) - 25ft (7.5m), 12s period, ENE swell with cross-onshore winds.
- Most powerful swell: Sunday 16 Aug, 11AM (local time) - 25ft (7.5m), 12s period, ENE swell with 16,368 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 11AM (local time) - 25ft (7.5m), 12s 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 Sunday (Aug 16) at 11AM. The primary swell is predicted to be 7.5m and 12s period with a secondary swell of 0.8m and 16s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Irmas/Leftpoint in the next 16 days are 7.5m 12s and forecast to arrive on Sunday (Aug 16) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 8s period and expected on Monday (Aug 10) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sun 16th Aug) | 25ft (7.5m) 12s |
| Best Surf | 11AM (Sun 16th Aug) | 25ft (7.5m) 12s |
| Most Powerful | 11AM (Sun 16th Aug) | 25ft (7.5m) 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 cards for Irmas/Leftpoint over the next couple of weeks.
First off, I gotta be straight with you – the start of this run is a bit of a write-off. We’re looking at a solid gap of nothing really worth paddling out for from now until the middle of the month. The wind is hammering from the NE and ENE, locking in a cross-shore chop that’s just making a mess of things. The swell is there, but the conditions are just poor. It’s lumpy, it’s cross-chop, and it’s not worth your time.
The first real glimmer of hope shows up on the morning of Sunday, the 16th of August. The wind swings around to a cross-off from the NNW, and the ocean cleans right up. We’re looking at a solid 13ft swell from the ENE, and the combined energy is pumping at a strong 5913 (moderate to strong wave energy). The period is a meaty 13 seconds, so it’s got some proper groundswell punch. That’s a serious, heavy wave for experts only at that size – beginners, stay well clear on this one. The afternoon gets even better: a cross-off from the WNW, a 15ft swell, and the energy jumps to 6921 (strong wave energy). The waves will be powerful and clean, but with that size and period, it’s going to be a wild, expert-only session. It’s a proper standout, but it’s a long way out, so take that promise with a pinch of salt.
After that Sunday blast, things get messy again. Monday the 17th sees the wind turn onshore from the south, and the quality drops back to poor with choppy conditions. The swell is still big at 12ft, but the wind is ruining it. For the rest of the week and into the next, it’s a lot of cross-shore wind and lumpy surf, with the odd marginal window. The combined energy does pick up again around the 23rd and 24th of August, with a long-period SSW groundswell (periods of 18 to 22 seconds) pushing in, but again, the wind is a fresh cross-shore breeze, so the surface is just a mess. That long-period stuff at a point break like this is usually a good thing, but not with that wind.
So, the one true standout is that Sunday the 16th of August. If you’re an expert and the forecast holds, that’s your window. For the rest of us, it’s a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon morning, min 25°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 42mm), heaviest during Sat night. Warm (max 26°C on Thu morning, min 25°C on Thu night). Winds increasing (fresh winds from the NE on Thu morning, severe gales from the SSW by Sat night). | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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 | SSW 15 | E 7 | ENE 7 | SSW 14 | S 20 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 | ENE 8 | ENE 8 | ENE 8 | ENE 10 | ENE 12 | ENE 11 | ENE 12 | E 11 | ENE 9 |
Wave Graph | |||||||||||||||||||||
232 | 234 | 245 | 208 | 269 | 268 | 509 | 613 | 520 | 501 | 653 | 537 | 588 | 669 | 889 | 1956 | 3331 | 3525 | 16368 | 7050 | 1114 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-on | cross-on | on |
High Tide | 1:55PM0.79m | 1:52AM0.27m | 2:36PM0.79m | 2:40AM0.31m | 3:14PM0.76m | 3:27AM0.36m | 3:49PM0.71m | 4:15AM0.41m | 4:22PM0.64m | 5:04AM0.45m | 4:53PM0.55m | 5:55AM0.48m | 5:21PM0.47m | ||||||||
Low Tide | 9:21PM0.06m | 7:31AM-0.04m | 9:52PM0.05m | 8:22AM-0.02m | 10:21PM0.04m | 9:11AM0.01m | 10:50PM0.04m | 10:01AM0.07m | 11:17PM0.04m | 10:54AM0.13m | 11:44PM0.05m | 11:53AM0.20m | 00:11AM0.05m | ||||||||
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 7:04 | — | — | 7:02 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 39 | 15 | 2 | 2 |
Temp °C | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 27 | 26 |
Feels °C | 26 | 25 | 26 | 25 | 24 | 22 | 24 | 22 | 25 | 24 | 23 | 22 | 21 | 22 | 22 | 24 | 23 | 22 | 22 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 16 | S 13 | ENE 9 |
232 | 234 | 186 | 165 | 269 | 243 | 509 | 613 | 520 | 501 | 653 | 537 | 411 | 411 | 302 | 225 | 168 | 176 | 334 | 123 | 1114 | |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 11 | SSW 11 | SSW 11 | SSE 9 | S 20 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | NNW 8 | NNW 7 | E 11 | E 12 | SSW 17 | NNW 8 | S 16 | S 18 | W 12 | S 16 | S 14 |
184 | 42 | 23 | 41 | 15 | 268 | 218 | 218 | 222 | 150 | 6 | 5 | 59 | 78 | 28 | 7 | 79 | 56 | 25 | 183 | 246 | |
Swell 3 Height (m) Direction Period (s) | SSW 12 | NNW 9 | NNW 8 | SSE 9 | S 21 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | W 11 | W 12 | SSW 18 | W 11 | W 11 | W 13 | W 13 | SSW 19 | W 12 | S 16 |
56 | 25 | 13 | 16 | 79 | 30 | 30 | 25 | 11 | 11 | 11 | 10 | 11 | 30 | 9 | 9 | 13 | 30 | 37 | 11 | 81 | |
Wind waves Height (m) Direction Period (s) | NE 7 | ENE 8 | E 7 | ENE 7 | ENE 7 | E 6 | ENE 6 | ENE 6 | E 6 | ENE 6 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 10 | ENE 12 | ENE 11 | ENE 12 | E 11 | SSE 6 |
73 | 196 | 245 | 208 | 186 | 193 | 182 | 170 | 247 | 253 | 317 | 474 | 588 | 669 | 889 | 1956 | 3331 | 3525 | 16368 | 7050 | 237 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 49 | 49 | 18 | 49 | 49 | 18 | 49 | 109 | 49 | 49 | 109 | 56 | 139 | 110 | 51 | 150 | 217 | 221 | 131 | 57 | 57 |
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.











