Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 7 am 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
27.0° C
0.3° 

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 16 Aug 2026:

  • Best quality surf: Friday 21 Aug, 11PM (local time) - 2.5ft (0.8m), 16s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 16 Aug, 2PM (local time) - 10ft (3.0m), 9s period, ENE swell with 1,188 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 11PM (local time) - 2.5ft (0.8m), 16s period with SSW 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 11PM. The primary swell is predicted to be 0.8m and 16s period with a secondary swell of 0.9m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Irmas/Leftpoint in the next 16 days are 3.0m 9s and forecast to arrive on Sunday (Aug 16) at 2PM. Winds are predicted to be 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+)11PM (Fri 21st Aug)2.5ft (0.8m) 16s
Best Surf11PM (Fri 21st Aug)2.5ft (0.8m) 16s
Most Powerful 2PM (Sun 16th Aug)10ft (3.0m) 9s

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


The Lowdown

Alright folks, Rusty here. Gotta be straight with you – this 16-day window is shaping up to be a tough one. We’re looking at a long stretch of messy, wind-affected surf before anything remotely rideable shows up at the end. Let’s get into it.

The only real option on the entire menu is Irmas/Leftpoint, a reef break that’s fairly consistent. To start, we’ve got a massive run of poor conditions. For the first five days, from Sunday the 16th through to Thursday the 20th, it’s just not worth paddling out. We’re dealing with onshore and cross-shore winds punching up a nasty lumpy chop, and the swell quality is zero. Sunday morning the 16th does have a big 12 ft easterly swell, but with a 22 mph onshore wind hammering it, and moderate energy readings (2,792), it’s a complete write-off. The water temp is sitting at 81°, which is about average for this time of year.

We then slide into a real dead zone. From Friday the 21st of August all the way through to Tuesday the 26th, it’s the same story: cross-shore winds, generally fresh breezes, and small to moderate choppy surf that’s just not offering anything clean. The swell energy stays mostly low to moderate (between 92 and 1,144). The wind never swings offshore, so the face stays lumpy. The biggest disappointment is that even when the swell ticks up to 8 ft on Wednesday the 26th, the 25 mph cross-shore wind makes it a messy, blown-out mess best left for the kite crew.

Now, if you’ve got the patience of a saint and a quiver of step-ups, there’s a glimmer in the very long range. On Thursday the 27th of August, the swell builds to a solid 10 ft from the ENE with a 10-second period, and the combined energy jumps to a strong 2,132. That’s a proper amount of water moving. But – and this is a big but – we still have those relentless 22 mph cross-shore winds. While the size is there for experts, the quality is absolutely not. The setup looks far more interesting for kite surfing than paddle surfing.

Friday the 28th of August brings the biggest push of the whole period: a 13 ft easterly swell at 9 seconds, with wave energy reading a very strong 2,621. That is a lot of ocean energy, and for Irmas/Leftpoint, that’s a heavy, powerful reef slab. But again, we’re stuck with a cross-shore 22 mph wind. It’ll be big and powerful, but blown out and unruly.

The outlook then fades back down, with a smaller 8 ft on Saturday the 29th and a 2 ft groundswell from the south-southwest on Sunday the 30th. That tiny 2 ft swell has a very long period of 17 seconds, but we still have a 22 mph cross-shore wind, and the break is exposed to the east, not the south. It’s a total mismatch.

Honestly, for the whole 16 days, there’s no standout session. The swell gets heavy at times, especially on the 28th, but the persistent wind ruining it. If you have to get wet, the best chance for a semi-clean wave at Irmas might be the morning of Saturday the 22nd of August. It’s a smaller 4 ft from the ENE with a light cross-onshore breeze and very low energy (221), and it’s only rated a 1 out of 10. It’s marginal, but it’s the least terrible option out there.

Stay patient, wait for a shift in the wind, and don’t force it.

Rusty.

Short Range Forecast

Heavy rain (total 39mm), heaviest during Sun morning. Warm (max 27°C on Sun morning, min 24°C on Mon night). Winds decreasing (strong winds from the ESE on Sun morning, light winds from the E by Sun night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Fri afternoon, min 24°C on Wed morning). Wind will be generally light.

Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
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
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
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)
3.5
E
9
2.5
ENE
9
1.9
ENE
8
1.7
ENE
8
0.8
S
14
1.5
ENE
7
1.3
ENE
7
1.4
ENE
7
1.2
ENE
8
1
E
8
0.9
E
8
0.9
E
8
0.6
SSW
18
0.6
SSW
17
0.8
NE
7
0.9
NE
7
0.9
NE
7
0.8
SSW
16
1.2
ENE
7
1.3
ENE
7
0.7
SSW
16
Wave Graph
Metric surfscale
Energy kJ
1759
888
452
338
261
218
161
188
173
129
107
102
207
202
57
86
71
322
117
141
212
Wind (km/h)
35
ESE
25
SE
15
E
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
NE
20
ENE
15
NE
20
NE
10
ENE
5
ESE
10
ESE
10
NE
10
E
25
NE
15
E
Wind State
on
on
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
on
cross-on
cross-off
cross-on
cross
cross-on
High Tide
5:21PM0.47m
6:52AM0.50m
5:48PM0.38m
7:56AM0.52m
6:10PM0.31m
9:08AM0.53m
10:20AM0.55m
8:45PM0.20m
11:21AM0.57m
10:59PM0.20m
12:10PM0.60m
00:02AM0.21m
Low Tide
11:53AM0.20m
00:11AM0.05m
1:08PM0.25m
00:39AM0.07m
2:59PM0.27m
1:14AM0.09m
2:00AM0.10m
7:38PM0.20m
3:06AM0.11m
7:49PM0.17m
4:20AM0.10m
8:09PM0.14m
thunderstorm
mod rain
thunderstorm
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:09
6:09
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
6:59
6:58
6:57
6:57
6:55
6:54
 mm
27
8
4
1
Temp °C
27
27
27
25
25
25
25
25
25
25
25
25
25
25
25
25
26
26
27
27
26
Feels °C
25
27
27
24
23
23
24
23
23
25
25
26
26
25
27
29
29
28
30
28
26
  • 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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