Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 1 am 10 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 10 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 11AM (local time) - 25ft (7.5m), 12s period, ENE swell with cross-onshore winds.
  • Most powerful swell: Sunday 16 Aug, 11AM (local time) - 25ft (7.5m), 12s period, ENE swell with 16,368 kJ wave energy.
  • Next surfable swell (1★+): Sunday 16 Aug, 11AM (local time) - 25ft (7.5m), 12s 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 Sunday (Aug 16) at 11AM. The primary swell is predicted to be 7.5m and 12s period with a secondary swell of 0.8m and 16s. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Irmas/Leftpoint in the next 16 days are 7.5m 12s and forecast to arrive on Sunday (Aug 16) 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 0.3m 8s period and expected on Monday (Aug 10) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Sun 16th Aug)25ft (7.5m) 12s
Best Surf11AM (Sun 16th Aug)25ft (7.5m) 12s
Most Powerful11AM (Sun 16th Aug)25ft (7.5m) 12s

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


The Lowdown

Alright, Rusty here again, but in feet and miles for you.

Let’s cut to the chase. I’ve only got one break to talk about for the next 16 days: Irmas/Leftpoint. It’s a reef break, fairly consistent, but we’re in for a long, frustrating stretch before anything decent comes together. There’s nothing worth recommending from Monday, August 10th until about Saturday, August 15th. That’s nearly a week of waiting. The water’s warm, about 81°, which is normal for this spot.

The first week is a total washout. Wind is hammering from the ENE, mostly 15 to 25 mph, cross or cross-onshore, creating lumpy, choppy mess. Swell sizes are small, with short periods, and the wave energy is weak to moderate. A little bump on Friday, August 14th brings 8ft from the ENE (8-second period), but the strong cross-shore wind ruins it. Don’t bother.

The one bright spot pops up on Saturday morning, August 15th. We’ll see a 10ft swell from the ENE (10-second period), and the wind goes cross-offshore from the NNE at 25 mph. The energy is strong, and the call is “clean.” This is your best chance. That 10ft is pushing into expert territory on a reef, so it’s not for beginners, but it’s the only time the wind plays nice. Keep an eye out for thunderstorms.

Sunday, August 16th, the swell goes bonkers. We’re talking 25ft from the ENE (12-second period) in the morning, with energy through the roof. But the wind is cross-on from the SSE, and the report says it’s just too big for the break. That’s a kite-surfing day if anything. After that, we slide back into the same old ENE cross-shore breeze with short-period, weak surf through to the end on August 25th. The energy stays light, and the quality stays poor.

So, to keep it simple: you’ve got one window. Saturday morning, August 15th at Irmas/Leftpoint is the standout. It’s the only clean, powerful swell of the whole forecast. If you’re not on it that morning, you’re waiting for nothing.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Heavy rain (total 42mm), heaviest during Sat night. Warm (max 26°C on Thu morning, min 25°C on Thu night). Winds increasing (fresh winds from the NE on Thu morning, severe gales from the SSW by Sat night).

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
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
1
0
0
0
0
0
0
0
1
2
2
!
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)
1.4
ENE
8
0.7
SSW
15
1.5
E
7
1.4
ENE
7
0.8
SSW
14
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
8
2.3
ENE
8
3
ENE
8
3
ENE
10
3.5
ENE
12
4
ENE
11
7.5
ENE
12
5.5
E
11
2.5
ENE
9
Wave Graph
Metric surfscale
Energy kJ
232
234
245
208
269
268
509
613
520
501
653
537
588
669
889
1956
3331
3525
16368
7050
1114
Wind (km/h)
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
25
ENE
35
ENE
35
ENE
30
ENE
35
NE
35
NE
40
ENE
40
NE
35
NE
35
NE
40
NNE
40
N
45
WSW
35
SSE
30
SSE
20
SE
Wind State
cross
cross
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-on
cross-on
on
High Tide
1:55PM0.79m
1:52AM0.27m
2:36PM0.79m
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
Low Tide
9:21PM0.06m
7:31AM-0.04m
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
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:07
6:07
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:02
7:02
7:01
7:00
7:00
7:00
 mm
3
39
15
2
2
Temp °C
26
26
26
26
26
25
25
25
26
26
26
25
25
25
25
26
26
26
26
27
26
Feels °C
26
25
26
25
24
22
24
22
25
24
23
22
21
22
22
24
23
22
22
26
26
  • 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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