Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 1 pm 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
26.9°C
0.0° 

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 1 Sep 2026:

  • Best quality surf: Monday 7 Sep, 8PM (local time) - 8ft (2.4m), 11s period, ENE swell with offshore winds.
  • Most powerful swell: Saturday 5 Sep, 11AM (local time) - 8ft (2.5m), 13s period, ENE swell with 2,224 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 8PM (local time) - 8ft (2.4m), 11s 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 Monday (Sep 07) at 8PM. The primary swell is predicted to be 2.4m and 11s period with a secondary swell of 1.1m and 15s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Irmas/Leftpoint in the next 16 days are 2.5m 13s and forecast to arrive on Saturday (Sep 05) 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 11s period and expected on Sunday (Sep 06) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 7th Sep)8ft (2.4m) 11s
Best Surf 8PM (Mon 7th Sep)8ft (2.4m) 11s
Most Powerful11AM (Sat 5th Sep)8ft (2.5m) 13s

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 coming up for Irmas/Leftpoint.

Right off the bat, I gotta be straight with you – the next few days are looking pretty grim. We’ve got a persistent ENE wind blowing hard, mostly cross-shore or cross-onshore, and it’s making a mess of things. The swell is on the small side and the period is short, so the wave quality is just not there. The water temp is sitting at 27°C, which is bang on average for this time of year, so at least you won’t need a wetsuit.

We’re looking at a long stretch of poor conditions from Monday afternoon the 31st right through to the end of the first week of September. The wind is a fresh to strong breeze, and the surf is lumpy and cross-chop. It’s not worth paddling out for.

The first real glimmer of hope comes on Saturday the 5th of September. The swell picks up to about 8ft from the ENE, and the period stretches out to 13 seconds – that’s a proper groundswell. The energy jumps up to strong (2727), but the wind is still a fresh cross-shore, so it’s a bit lumpy. It’s a marginal call, but it’s the best we’ve seen in a while.

Then, on Monday the 7th of September, things get interesting. We’ve got an 8ft ENE swell with a 12-second period, but the wind swings around to a light N breeze, going cross-offshore. That’s a game-changer – the report says “clean”. This is the standout of the whole forecast. The energy is high (2541), and with that offshore wind, Irmas/Leftpoint should be offering up some nice, lined-up waves. It’s a reef break, and it’s fairly consistent, so expect some good ones. Be aware that it does get crowded sometimes, so you’ll want to be early.

After that, the week of the 8th sees a drop in size and quality. The wind stays messy for the most part, and the swell goes back to being short-period and weak. There’s a brief moment on Tuesday afternoon the 8th with a 3ft SSW 14-second groundswell and light wind, but it’s small and cross-onshore, so it’s not really a goer.

The second week, from the 11th through the 15th, is a write-off. The swell is small, the period is short, and the wind is onshore or cross-shore. It’s just not happening. The energy drops to weak (248-416), and it’s all poor surf conditions. Honestly, you’re better off doing something else.

So, to wrap it up: the run-up to the 7th of September is a long wait, but that Monday afternoon with the offshore wind and solid groundswell is your best bet. Keep an eye on that one.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Sat night. Warm (max 26°C on Sat morning, min 25°C on Thu afternoon). Winds decreasing (strong winds from the ENE on Thu afternoon, moderate winds from the ENE by Sat night).

Mon
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
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
1
1
0
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
ENE
7
2.2
ENE
8
2.1
ENE
8
1.9
ENE
8
2.1
ENE
8
2.2
ENE
8
2.5
ENE
8
3
ENE
8
3
E
8
2.5
ENE
8
3
E
8
3
ENE
8
2
ENE
8
2.4
ENE
13
2.5
ENE
13
2.4
ENE
13
2.4
ENE
13
2.5
ENE
13
2.4
ENE
13
2.5
ENE
12
Wave Graph
Metric surfscale
Energy kJ
516
525
520
464
555
572
727
1073
1088
729
1220
1029
482
1864
2224
1886
1886
1997
1759
1794
Wind (km/h)
35
ENE
35
ENE
35
NE
35
ENE
35
ENE
40
ENE
40
ENE
40
ENE
45
ENE
45
ENE
45
ENE
45
ENE
40
ENE
35
ENE
30
ENE
30
ENE
25
ENE
30
ENE
35
ENE
30
NE
Wind State
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross-on
cross
cross
cross-on
cross
cross
cross
High Tide
4:46PM0.43m
6:14AM0.56m
5:18PM0.36m
7:19AM0.59m
5:54PM0.28m
8:36AM0.61m
7:01PM0.22m
9:55AM0.64m
9:27PM0.19m
11:03AM0.68m
11:10PM0.21m
12:00PM0.71m
00:14AM0.26m
Low Tide
11:23PM0.04m
12:53PM0.23m
11:56PM0.04m
2:47PM0.24m
00:39AM0.05m
5:18PM0.21m
1:39AM0.06m
6:33PM0.16m
3:03AM0.07m
7:10PM0.12m
4:28AM0.06m
7:41PM0.09m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
thunderstorm
thunderstorm
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:13
6:15
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:46
6:45
6:45
6:45
6:44
6:43
6:42
 mm
2
1
Temp °C
26
25
25
26
26
26
26
26
26
25
25
25
25
25
26
26
26
26
26
26
Feels °C
22
21
22
24
24
23
23
23
22
20
20
20
20
21
25
24
25
25
24
25
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  • 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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