Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 7 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
26.8° 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 22 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-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Friday (Aug 21) at 5PM.

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

G’day, Rusty here, and I’ve got to be straight with you – the next couple of weeks at Irmas/Leftpoint (a reef set-up) are looking pretty grim. There’s a long stretch of poor conditions ahead, so don’t get your hopes up early.

Right now, through Friday the 21st and Saturday the 22nd of August, the surf is small and weak. Friday morning sees a weak 4ft swell from the NE with a short 7-second period, and the combined energy is only 112, so there’s hardly any power. The wind is cross-on from the ENE, and it’s only light on Friday morning, but it gets fresh and messy by the afternoon. Saturday and Sunday are worse – the swell bumps up to 5ft to 6ft, but the period stays short at 7 seconds, and we’ve got strong cross-onshore winds up to 25 mph. The water is a warm 80°F, which is about average for this time of year. Honestly, it’s all poor surf with ripples and chop, not worth paddling out.

From Monday the 24th through to the end of August, the pattern doesn’t improve. The swell stays in the 3ft to 6ft range, mostly from the ENE or E, with periods still short at 6-7 seconds, and the wind is a constant fresh cross-shore breeze. The combined energy climbs a bit – up to 625 on the 26th – but the conditions are lumpy and messy. There’s a brief change on the 26th afternoon when a 2ft swell from the south with an 18-second period shows up, and the energy hits 571, but the cross-shore wind ruins it. By Thursday the 27th, a longer-period S swell builds to 4ft with a 17-second period and energy of 1181, but the wind is still fresh cross-shore, so it’s all lumpy. The waves are there but the wind kills the quality.

The best chance in this whole outlook comes on Monday the 31st of August, but it’s a big one. The swell jumps to 10ft from the ENE with an 11-second period, and the combined energy is massive at 2525. By the afternoon, it’s 13ft with a 10-second period and energy of 3418 – that’s serious power. But the wind is a fresh cross-shore, so it’s lumpy and messy. This is only for experts, as it’s well over 8ft, and with that kind of energy and onshore influence, it’s more of a beast than a beauty. The swell direction is ENE, not the optimum ESE, so it’s not ideal for the reef.

After that, Tuesday the 1st of September stays big – 10ft to 12ft from the ENE, but with near gale-force cross-shore winds up to 31 mph. The energy is still huge, but it’s a total mess. The rest of the first week of September sees the swell drop to 5ft to 8ft, with periods from 8 to 12 seconds, but the wind is cross-on or onshore, and the energy is moderate at best. There’s a slight chance on Friday the 4th morning with a gentle cross-on breeze and 6ft swell, but it’s still marginal.

In the second week, around Saturday the 5th of September, we see a 6ft swell from the ENE with a 12-second period and energy of 856, but the wind is light cross-on, so it’s just a little cleaner. Still, not a standout.

So, to sum it up: the only real standout is Monday the 31st of August, with that massive 13ft swell and huge energy, but it’s only for the experienced and it’s going to be lumpy. For everyone else, it’s a long wait with poor conditions. The setup here is more interesting for kite surfing than paddle surfing during the strong winds. Keep an eye on the forecasts, but don’t hold your breath.

Rusty

Short Range Forecast

Mostly dry. Warm (max 27°C on Fri afternoon, min 25°C on Sat night). Winds increasing (calm on Fri morning, strong winds from the ENE by Sat night).

Days 4-6 Weather Summary

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

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
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
NE
7
1.1
NE
7
0.8
SSW
16
1.6
ENE
7
1.7
ENE
7
2.1
E
7
1.8
ENE
7
1.8
ENE
7
1.6
ENE
6
0.7
SSW
14
1.6
ENE
7
1.7
E
7
1.6
E
8
1.7
ENE
7
1.7
ENE
7
0.7
SSW
14
0.7
S
18
0.7
S
19
1.2
S
17
0.9
S
16
1.1
S
16
Wave Graph
Metric surfscale
Energy kJ
96
106
322
225
301
465
327
290
201
168
232
278
324
310
277
218
307
347
861
417
590
Wind (km/h)
10
ENE
20
NE
20
ENE
40
ENE
40
ENE
35
ENE
40
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
35
ENE
30
ENE
30
ENE
Wind State
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross
cross
High Tide
11:21AM0.57m
10:59PM0.20m
12:10PM0.60m
00:02AM0.21m
12:51PM0.62m
00:45AM0.24m
1:26PM0.65m
1:20AM0.27m
1:56PM0.66m
1:55AM0.30m
2:25PM0.67m
2:30AM0.34m
2:53PM0.66m
3:07AM0.39m
Low Tide
7:49PM0.17m
4:20AM0.10m
8:09PM0.14m
5:23AM0.08m
8:29PM0.12m
6:13AM0.06m
8:49PM0.11m
6:56AM0.04m
9:09PM0.10m
7:36AM0.04m
9:29PM0.09m
8:15AM0.04m
9:49PM0.07m
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:11
6:11
6:11
6:11
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:55
6:54
6:53
6:52
6:52
6:52
6:51
 mm
Temp °C
26
27
27
26
26
25
26
26
25
26
26
26
26
26
25
25
25
25
25
25
25
Feels °C
30
29
28
26
24
22
24
23
23
24
24
26
25
23
23
21
22
23
24
22
23
  • 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