Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 7 am 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
27.1°C
0.1° 

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 11 Sep 2026:

  • Most powerful swell: Thursday 17 Sep, 11AM (local time) - 7.5ft (2.3m), 10s period, ENE swell with 940 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 2.3m 10s and forecast to arrive on Thursday (Sep 17) 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 0.9m 18s period and expected on Wednesday (Sep 16) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Thu 17th Sep)7.5ft (2.3m) 10s

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


The Lowdown

G’day, Rusty here. Look, I’ve been staring at the charts for Irmas/Leftpoint, and I’ve got to be straight with you – this isn’t shaping up to be a classic run. The whole 16-day window is a bit of a grind. The water temp is sitting around 81°, which is about average for this time of year, nothing weird going on there.

We kick off on Friday the 11th of September, and it’s pretty grim from the get-go. The swell is a weak 4ft from the ENE, but that 15 mph cross-onshore breeze absolutely spoils it. The combined swell energy is a moderate 412, but it’s all messy and choppy. This is poor, flat water for paddle surfing. Honestly, with that wind and poor shape, a kite surfer might get a look in.

Saturday the 12th and Sunday the 13th are more of the same – small, weak swell (3ft and 3ft) with that annoying cross-shore wind. The energy drops right off, down to 191 on Sunday morning. It’s all a bit of a waste.

Monday the 14th through to Tuesday the 15th is a real dead zone. Swell drops to 2ft and the wind stays up. You’re looking at a few days where you’re better off doing something else.

Then things get weird. Wednesday the 16th sees a sudden spike in swell – 6ft in the morning, but it’s short period wind swell (6 seconds) and absolutely howling cross-shore wind at 25 mph. That afternoon, a long period 18-second SSW groundswell hits at 3ft, bumping the energy to 867, but again, the wind is a mess. This is not surfable for a paddle surfer.

Thursday the 17th turns nasty with swell hitting 8ft and combined energy roaring up to 1429 – that’s strong energy. But the wind is a strong 25 mph cross-shore, creating messy, lumpy conditions. This is expert-only territory, and even then, it’s not worth it.

Friday the 18th brings thunderstorms and a 8ft ENE swell with cross-onshore wind. The energy is 1335, but it’s a complete write-off for quality. Saturday the 19th and Sunday the 20th stay poor – 6ft swell, fresh cross-shore wind, energy staying in the 500-900 range. Just ugly.

There’s a slight glimmer right at the end. Thursday the 24th of September: the wind finally swings to a light 6 mph onshore from the SSE, and the swell is 7ft from the east with a 10-second period. It’s still a bit lumpy and only a marginal forecast, but at least the wind isn’t ruining it. The combined energy is 1138.

The best of a bad bunch really looks like Friday the 25th of September – 7ft east swell, a gentle 9 mph cross-shore wind from the ENE, and a 10-second period giving it some shape. Energy is 1215. It’s still a marginal call, but that morning window is the closest thing to a surfable wave in this entire 16-day run. It’s not a standout by any normal standard, but compared to the rest, it’s your best bet. For an east swell, a point break like Irmas/Leftpoint (a reef break exposed to the ESE) can handle it, and with that light wind, it might offer a few decent lefts.

After that, Saturday the 26th fades back into messy cross-shore conditions. Honestly, the whole period is a tough one. The consistency is there for the swell, but the wind just won’t cooperate. Don’t hold your breath.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 25°C on Fri morning, min 24°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Tue morning, min 25°C on Mon morning). Mainly strong winds.

Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
1.2
ENE
11
1.1
ENE
11
1
E
10
0.9
ENE
10
0.8
ENE
10
0.9
NNE
9
0.9
NNE
9
0.9
NNE
9
1
NE
9
0.8
NE
8
0.7
NE
8
0.4
SSW
13
0.4
E
12
0.8
NNE
8
0.8
SSW
19
1.7
ENE
6
0.9
SSW
18
1.9
ENE
8
2.3
ENE
10
2.2
ENE
10
2.3
ENE
9
Wave Graph
Metric surfscale
Energy kJ
363
292
212
160
125
135
135
138
145
82
69
68
49
67
470
212
541
397
940
862
791
Wind (km/h)
25
ENE
25
NE
20
ENE
20
ENE
20
NE
20
ENE
20
ENE
25
NE
20
NE
25
ENE
25
NE
25
ENE
25
ENE
30
NE
35
ENE
40
ENE
35
NE
35
ENE
40
ENE
40
NE
35
ENE
Wind State
cross-on
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
3:13PM0.59m
3:51AM0.55m
3:42PM0.51m
4:32AM0.57m
4:10PM0.44m
5:15AM0.59m
4:37PM0.37m
6:02AM0.58m
5:04PM0.30m
6:56AM0.56m
5:30PM0.25m
8:04AM0.54m
6:18PM0.21m
Low Tide
9:14AM0.08m
9:49PM0.03m
10:05AM0.12m
10:11PM0.04m
10:58AM0.16m
10:34PM0.05m
11:57AM0.20m
10:58PM0.06m
1:10PM0.23m
11:24PM0.09m
2:59PM0.23m
11:56PM0.11m
5:49PM0.21m
00:44AM0.14m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
6:16
6:16
6:16
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:36
6:35
6:34
6:32
6:31
6:30
 mm
1
Temp °C
25
25
25
25
25
25
25
25
25
25
25
25
26
26
26
26
26
26
26
26
26
Feels °C
23
23
24
24
24
25
25
24
24
23
23
24
26
25
24
24
24
25
24
24
25
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Irmas/Leftpoint:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Irmas/Leftpoint surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest