Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 7 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
27.2°C
0.4° 

Irmas/Leftpoint surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Irmas/Leftpoint surf forecast from 26 Aug 2026:

  • Most powerful swell: Thursday 27 Aug, 11AM (local time) - 4ft (1.2m), 17s period, S swell with 861 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 17s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 17s period and expected on Saturday (Aug 29) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Thu 27th Aug)4ft (1.2m) 17s

Table - best surf conditions forecast for Irmas/Leftpoint over the next 16 days.


The Lowdown

Alright, let’s get this out there. It’s Rusty here, and I’m looking at the next couple of weeks for Irmas/Leftpoint. Gotta be straight with you – this is a long, tough stretch. The forecast is a real bummer, with a whole lot of nothing for a long time. We’re looking at a solid week and a half of poor conditions, so don’t go getting your hopes up too early.

Right now, Irmas/Leftpoint is the only show in town, and it's a reef break that's fairly consistent when it's on, but it needs a solid ESE swell to really work. The water’s sitting at 81°, which is pretty normal for this time of year, so no surprises there.

We kick off the first proper window on the morning of Thursday, 10th September. That’s the only time in the whole 16-day run that’s even worth a second look. We’ll have a 5ft swell coming from the east, with a period of 12 seconds. That’s a nice, long groundswell – it’ll have some punch and shape, perfect for a reef setup like this. The combined energy is a solid 1184 (moderate to strong), so there’s some power behind it. The wind is a light cross-onshore from the east at 9 mph, just a gentle breeze. It’s not perfect, but it’s manageable. The afternoon looks even better – the swell bumps up a touch to 5ft, still from the east, and the wind drops to a light cross-shore breeze at 6 mph. That’s the pick of the whole period: clean, glassy enough to get some good lines, and that long period swell will wrap nicely around the point. It’s a marginal forecast, but honestly, it’s the best we’ve got.

The crowd situation at Irmas can be a bit of a pain – it gets busy sometimes, but on a Thursday, you might luck out. The only downside is that swell over 5ft can be a bit much for beginners, and with that long period, it’ll be walling up. Better suited for the intermediate crew.

Now, for the bad news. Before that Thursday, the entire stretch from Wednesday, 26th August, right through to Wednesday, 9th September, is a total write-off. That’s nearly two weeks of cross-shore winds, lumpy chop, and weak, short-period slop. The swell is coming from the east or south, but the wind is a constant 15-22 mph cross-shore from the ENE, just trashing everything. The wave energy is all over the place, but the quality is just poor. There’s a day or two where the swell gets a bit bigger (up to 7ft on the 2nd of September), but with that cross-onshore wind, it’s just a messy, blown-out burger. Honestly, for a beach or reef setup, that’s more of a kite-surfing wind than a paddling day.

So, to wrap it up: there’s one, single day that shines – Thursday, 10th September at Irmas/Leftpoint. The afternoon is the standout. Everything else? Forget it. It’s a grim run, but hey, it tends not to stay this bad forever. Forecasts can change.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Wed morning, min 25°C on Wed morning). Mainly fresh winds.

Days 4-6 Weather Summary

Some drizzle, heaviest during Mon night. Warm (max 26°C on Sun morning, min 25°C on Sat morning). Mainly fresh winds.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
E
6
0.7
S
18
0.8
S
19
1.2
S
17
0.9
S
16
1.1
S
16
0.8
S
14
0.9
S
14
1.9
ENE
7
2
ENE
7
2.1
ENE
7
1.9
ENE
7
1.9
ENE
7
1.6
ENE
7
1.6
ENE
7
1.6
ENE
7
1.7
NE
8
2
ENE
8
1.7
ENE
9
1.7
ENE
8
1.9
ENE
8
Wave Graph
Metric surfscale
Energy kJ
235
307
458
861
427
590
260
329
332
349
408
317
330
244
222
243
371
551
444
423
488
Wind (km/h)
35
ENE
30
ENE
35
ENE
35
ENE
30
NE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
NE
25
ENE
25
ENE
30
ENE
25
ENE
Wind State
cross
cross
cross
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross-on
cross
cross-on
cross
cross
cross
cross-on
cross
cross-on
High Tide
2:25PM0.67m
2:30AM0.34m
2:53PM0.66m
3:07AM0.39m
3:21PM0.62m
3:47AM0.44m
3:48PM0.58m
4:31AM0.49m
4:17PM0.51m
5:19AM0.53m
4:46PM0.43m
6:14AM0.56m
5:18PM0.36m
Low Tide
9:29PM0.09m
8:15AM0.04m
9:49PM0.07m
8:57AM0.06m
10:10PM0.06m
9:43AM0.10m
10:32PM0.05m
10:34AM0.14m
10:56PM0.04m
11:35AM0.19m
11:23PM0.04m
12:53PM0.23m
11:56PM0.04m
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
rain showers
part cloud
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:11
6:13
6:13
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:51
6:50
6:49
6:47
6:46
6:45
 mm
1
3
Temp °C
26
25
25
25
25
25
25
25
25
25
25
25
26
26
25
26
26
26
26
26
26
Feels °C
23
21
22
22
22
22
22
22
22
21
21
22
23
23
23
24
25
26
26
26
26
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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