Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 7 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
26.7° 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 20 Aug 2026:

  • Best quality surf: Friday 21 Aug, 5AM (local time) - 3.5ft (1.0m), 7s period, NE swell with glassy winds.
  • Most powerful swell: Thursday 27 Aug, 11AM (local time) - 4ft (1.2m), 17s period, S swell with 851 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 5AM (local time) - 3.5ft (1.0m), 7s period with NE 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 Friday (Aug 21) at 5AM. The primary swell is predicted to be 1.0m and 7s period. The wind is predicted to be glassy as the swell arrives.

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 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Fri 21st Aug)3.5ft (1.0m) 7s
Best Surf 5AM (Fri 21st Aug)3.5ft (1.0m) 7s
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, I'm Rusty. Let's have a look at what's on the cards for the region.

The 16-day window doesn't start with any fireworks. The first sniff of a surf that's worth a mention is on Thursday morning, the 20th of August, but it's a bit of a tease. Irmas/Leftpoint has a tiny 2ft SSW swell with a very long period of 18 seconds, but the wind is a light cross-shore breeze. The combined energy is moderate at 345, but the conditions are described as marginal, and the tide might be a player. The water's sitting at 80°, which is about average for this time of year.

The rest of August and right into the first few days of September is a real struggle. From Thursday afternoon the 20th, all the way through to the afternoon of the 3rd of September, the forecast is consistently "poor surf conditions". That's a solid two-week stretch of messy, cross-shore winds, mostly from the ENE, with lumpy, choppy seas. The swell periods are very short, mostly between 6 and 8 seconds, which means weak, bumpy waves. The wind picks up, with fresh to strong breezes making it a real battle out there. There's some decent energy in the water at times, like the 6ft 12-second ENE swell and 1271 combined energy on the 30th of August, but the wind is just too strong and cross-shore to make it any good for a paddle. Honestly, with that much wind, a few of those lumpy, cross-chop days might be more interesting for the kite crew than for us.

The one real standout, and the only time this outlook gets its head above water, comes right at the very end. On the afternoon of Thursday, the 4th of September, things finally line up. The winds are forecast to turn light and cross-offshore from the north, cleaning up the 6ft ENE swell. The period is a solid 9 seconds, and the combined energy is moderate at 648. It's a late burst of life, and while it's a long way off, that's the one to circle on the calendar. The morning of the 4th also looks promising with clean conditions, so the whole day could be a winner. The difficulty is rated intermediate, but with a 6ft swell, it's well within reach for most.

So, to be honest, it's a grim outlook for most of the 16 days. The pickings are slim, but that Thursday the 4th of September is the only real window. The rest is a write-off. Keep an eye on the forecasts, because things can change, but right now, this is a waiting game.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

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

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
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)
0.6
SSW
18
0.6
SSW
17
1.1
NE
7
0.8
ENE
7
1.1
NE
7
0.8
SSW
16
1.3
ENE
7
1.6
ENE
7
1.7
E
7
1.7
ENE
7
2
ENE
7
1.7
ENE
7
0.7
SSW
14
0.7
SSW
13
1.6
ENE
7
1.7
ENE
8
1.7
ENE
7
1.6
ENE
7
0.7
SSW
14
0.8
S
19
0.7
S
18
Wave Graph
Metric surfscale
Energy kJ
207
202
119
67
106
322
137
225
286
255
371
277
188
156
212
364
319
245
215
450
311
Wind (km/h)
10
NE
15
NE
5
E
10
ENE
15
ENE
15
E
40
ENE
40
ENE
40
ENE
45
ENE
40
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
Wind State
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
High Tide
10:20AM0.55m
8:45PM0.20m
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
Low Tide
7:38PM0.20m
3:06AM0.11m
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
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:11
6:11
6:11
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:55
6:54
6:53
6:52
6:52
6:52
 mm
Temp °C
26
27
26
26
27
27
26
25
25
25
25
25
25
26
25
25
26
25
25
25
25
Feels °C
29
29
29
29
30
29
26
22
22
22
22
22
23
24
23
23
25
23
23
23
23
  • Map Icons:
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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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