Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 1 pm 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
26.8°C
0.2° 

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 11 Sep 2026:

  • Most powerful swell: Thursday 17 Sep, 8AM (local time) - 7ft (2.1m), 8s period, ENE swell with 578 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 2.1m 8s and forecast to arrive on Thursday (Sep 17) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 18s period and expected on Wednesday (Sep 16) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Thu 17th Sep)7ft (2.1m) 8s

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


The Lowdown

Alright, Rusty here. Let’s break this down.

I’ll be honest, the next 16 days at Irmas/Leftpoint are looking pretty grim. We’ve got a huge gap right at the start with no decent surf on the cards. The first anything close to rideable doesn’t appear until Thursday the 22nd of September, and even that is just marginal. That’s about 12 days of nothing.

Right now, the wind is hammering out of the east-northeast at 15 to 25 mph, and it stays cross or cross-onshore almost the whole time. The surface is chopped up and messy. The swell is mostly from the east-northeast with a short period of 7 to 11 seconds, so the waves are weak and lack any real push. The combined energy is moderate, in the 100 to 700 range, but none of it matters with the wind this bad.

On Thursday the 22nd of September, we finally see some swell size, around 7 ft from the east, with a 10-second period and combined energy hitting 893 (moderate). But the wind is still cross-onshore at 12 mph, so the surface will stay lumpy. It’s a marginal call.

Friday the 23rd of September is similar: 6 ft of east swell, period up to 10 seconds, and the wind eases a bit to 12 mph but stays cross-shore. Still not clean, but it’s the best we’ll see. The water temperature is about 80°F, which is normal for this time of year with a minor anomaly, so it’s warm for just boardies.

Irmas/Leftpoint is a reef break, fairly consistent, and works best with an ESE swell. The swell we get is mostly east to east-northeast, so it’s off-angle but not terrible. It’s for intermediate surfers, so when the waves are good, it can handle a crowd. But with this wind, crowds won’t be a problem because nobody’s out there.

There’s no standout day. If I had to pick one, it’s the morning of Friday the 23rd, but it’s a long shot. The wind is never favorable, the swell never gets clean, and the period is too short to make up for it. This one’s a write-off, folks.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Thu afternoon, min 24°C on Fri night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 26°C on Tue morning, min 24°C on Sun night). Mainly fresh winds.

Thu
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
ENE
7
1.4
ENE
7
1.3
ENE
11
1.1
ENE
11
1.2
ENE
10
0.9
ENE
10
0.9
NE
9
0.9
NNE
9
0.9
NNE
9
1.2
NE
9
1.2
NE
9
1.1
NE
8
1.1
NE
8
1.1
NE
8
1.1
NE
7
0.9
NE
7
0.8
SSW
19
1.7
ENE
7
0.9
SSW
18
2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
247
191
422
292
279
160
115
135
135
220
210
153
165
145
121
89
470
301
541
451
Wind (km/h)
35
ENE
30
ENE
25
ENE
25
NE
20
ENE
20
ENE
25
NE
20
ENE
25
NE
25
NE
25
ENE
25
NE
25
NE
20
NE
25
ENE
30
NE
30
ENE
35
ENE
35
ENE
35
ENE
Wind State
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
2:41PM0.65m
3:11AM0.50m
3:13PM0.59m
3:51AM0.55m
3:42PM0.51m
4:32AM0.57m
4:10PM0.44m
5:15AM0.59m
4:37PM0.37m
6:02AM0.58m
5:04PM0.30m
6:56AM0.56m
5:30PM0.25m
Low Tide
9:26PM0.04m
9:14AM0.08m
9:49PM0.03m
10:05AM0.12m
10:11PM0.04m
10:58AM0.16m
10:34PM0.05m
11:57AM0.20m
10:58PM0.06m
1:10PM0.23m
11:24PM0.09m
2:59PM0.23m
11:56PM0.11m
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:37
6:36
6:35
6:34
6:32
6:31
 mm
Temp °C
26
25
25
25
25
25
25
25
25
25
25
25
25
25
26
26
26
26
26
25
Feels °C
24
23
24
23
25
24
24
24
24
24
24
24
24
25
27
25
26
25
25
24
  • 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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