Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 7 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
27.0° 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 12 Aug 2026:

  • Most powerful swell: Sunday 16 Aug, 11AM (local time) - 16ft (5.0m), 11s period, E swell with 6,221 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 5.0m 11s and forecast to arrive on Sunday (Aug 16) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 16s period and expected on Tuesday (Aug 18) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Sun 16th Aug)16ft (5.0m) 11s

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


The Lowdown

Alright folks, Rusty here. Let’s break down the next couple of weeks. I’ll be honest – for most of this period, it’s a tough one. The first decent session doesn’t show up until way down the line, so we’ve got a long stretch of waiting.

The only break we’re looking at is Irmas/Leftpoint. It’s an exposed reef set-up, and it’s a fairly consistent spot, but the wind and swell just aren’t cooperating for a long time. From Wednesday 12 August right through to the morning of Monday 24 August, every single session is rated as poor surf conditions. The wind is mostly a fresh cross-shore, often with a lumpy cross-chop, and the swell energy is all over the place. On Saturday 15 August, the swell jumps up to 12 ft from the ENE, but with a near gale cross-shore, it’s a mess. That Sunday 16 August sees a massive 16 ft E swell, with a ton of energy, but it’s onshore from the SE and there’s a risk of thunderstorms – that’s expert-only, and even then, it’s not clean. So for a solid 12 days, there’s nothing worth paddling out for.

But then, things finally shift. The standout window is Monday 24 August. The morning kicks off with glassy conditions – wind from the east at just 3 mph, and the water is like a mirror. Swell is a clean 3 ft from the SSW, with a long 13-second period. That’s a proper groundswell, and it’s bringing moderate energy. The afternoon holds the same glassy vibe, with the wind swinging light from the NNW. This is the best on offer, hands down. It’s small but clean, and for a reef break like Irmas/Leftpoint that likes an optimum ESE swell direction, this SSW angle will still wrap in nicely. Crowds are sometimes an issue here, but on a day like this, with such a long flat spell, it might be worth the paddle.

Beyond that, Tuesday 25 August afternoon shows some promise with glassy conditions again, but the swell drops a touch to 2 ft and the score is lower. It’s a marginal call. The rest of the week after that gets choppy again with cross-onshore winds.

So, bottom line: stay patient. The first half of the outlook is a write-off. The real chance is Monday 24 August – mark it in your calendar. If you can’t wait, the forecasts can change, but as it sits, that’s your one decent shot.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Heavy rain (total 42mm), heaviest during Sat night. Warm (max 27°C on Sun morning, min 25°C on Fri night). Winds decreasing (gales from the ENE on Sat night, light winds from the E by Sun night).

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
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
3
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
S
20
0.9
S
18
1
S
18
1
S
16
1
S
16
1.2
S
15
1.1
S
15
2.3
ENE
7
2.2
ENE
9
3
E
8
3.5
ENE
11
3.5
ENE
9
4
E
9
5
E
11
3.5
E
9
2.3
ENE
8
2
ENE
8
1.9
ENE
8
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
268
509
613
520
501
653
537
532
708
990
2364
2044
2302
6221
1814
702
498
395
286
Wind (km/h)
30
ENE
30
ENE
35
ENE
30
ENE
35
NE
35
ENE
35
ENE
35
NE
40
NE
45
NE
45
NE
50
NE
65
ENE
35
SE
25
SE
10
E
25
ENE
30
ENE
35
ENE
Wind State
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
on
on
cross-on
cross-on
cross
cross
High Tide
2:40AM0.31m
3:14PM0.76m
3:27AM0.36m
3:49PM0.71m
4:15AM0.41m
4:22PM0.64m
5:04AM0.45m
4:53PM0.55m
5:55AM0.48m
5:21PM0.47m
6:52AM0.50m
5:48PM0.38m
Low Tide
9:52PM0.05m
8:22AM-0.02m
10:21PM0.04m
9:11AM0.01m
10:50PM0.04m
10:01AM0.07m
11:17PM0.04m
10:54AM0.13m
11:44PM0.05m
11:53AM0.20m
00:11AM0.05m
1:08PM0.25m
00:39AM0.07m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:02
7:02
7:01
7:00
7:00
7:00
6:59
 mm
1
1
27
7
5
1
Temp °C
26
25
25
26
26
26
26
26
26
25
26
26
26
27
27
26
26
26
25
Feels °C
24
22
22
23
23
23
23
22
23
22
23
22
21
25
27
27
28
25
23
  • 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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