Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 7 am 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
27.0°C
0.1° 

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 1 Sep 2026:

  • Most powerful swell: Saturday 5 Sep, 11PM (local time) - 8ft (2.5m), 14s period, ENE swell with 2,220 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 2.5m 14s and forecast to arrive on Saturday (Sep 05) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 11s period and expected on Monday (Sep 07) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Sat 5th Sep)8ft (2.5m) 14s

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


The Lowdown

Alright mate, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.

Honestly, it’s a tough stretch ahead. The first week is pretty much a write-off for any decent paddle surfing. We’ve got a lot of swell, but the wind is just relentless from the east-northeast, blowing cross and cross-onshore, and it’s dishing up lumpy, messy conditions. The water temp is sitting at 81°, which is spot on for this time of year, so at least it’ll be warm while you’re getting chopped up.

The only spot on the radar is Irmas/Leftpoint. It’s a reef break, fairly consistent, and likes an ESE swell. The problem is, for the first several days, the wind is a strong, fresh breeze, and the combined swell energy is moderate to strong—like 866 to 1795—but it’s all short-period, 7 to 8 seconds, which won’t help the shape when it’s already messy.

We don’t get a sniff of anything worth paddling out for until maybe Saturday the 5th and Sunday the 6th. The swell drops a touch, around 8 ft to 8 ft, but the period finally stretches out to 12 to 13 seconds. That’s a groundswell, so you’ll get better-shaped waves, more energy, and longer gaps between sets. The combined energy is still strong (1750 to 2507), but the wind is still a fresh cross-shore, so it’s not going to be glassy. It’s still marginal, but it’s the best we’ve got in that first week. Saturday (5th) might be your best bet here, with the longest period and the slightly lower wind speed of 19 mph.

The big standout, though, is looking at Saturday the 12th of September. That’s the one to circle on the calendar. The swell is cranking—15 ft from the ENE, with a 10-second period. The combined energy is massive at 4548, meaning very strong wave energy. A word of caution: 15 ft is big, big territory. This is expert-only stuff. The wind is a moderate cross-shore, which is still messy, but with that much juice, the reef might just hold it together. This is a long-range call, so there’s some uncertainty, but if it lines up, Irmas/Leftpoint could be absolutely pumping. Crowds are possible here, so expect some company.

After that, the swell backs right off. By the 15th and 16th, we’re looking at tiny, weak waves (1 ft to 2 ft) with weak energy (19 to 123), and the wind is still a problem. That’s a proper doldrum period.

So, to sum it up: the first week is a grind. The one bright spot in the near term is Saturday the 5th for a middling session. The real promise, if you’re a charger, is Saturday the 12th for some serious, heavy waves. The rest of the forecast is a write-off.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Tue night. Warm (max 26°C on Tue morning, min 25°C on Tue morning). Mainly strong winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Sat morning, min 25°C on Fri morning). Winds decreasing (strong winds from the ENE on Fri morning, moderate winds from the ENE by Sun night).

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
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
0
0
0
0
0
1
1
1
1
1
2
1
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
ENE
8
2.1
ENE
8
2.3
ENE
8
2.2
ENE
8
2.1
ENE
8
3
ENE
8
2.5
ENE
7
3
ENE
8
2.5
ENE
8
2.5
ENE
8
1.2
E
14
1.4
E
14
2.3
ENE
13
2.4
ENE
13
2.5
ENE
13
2.3
ENE
12
2.2
ENE
12
2.3
ENE
12
2.2
ENE
12
2.1
ENE
12
2
ENE
11
Wave Graph
Metric surfscale
Energy kJ
508
519
645
589
549
953
639
889
729
785
607
753
1792
1930
2091
1593
1338
1468
1369
1150
1045
Wind (km/h)
35
NE
35
NE
35
ENE
40
ENE
40
ENE
40
ENE
45
ENE
45
ENE
45
ENE
45
ENE
40
ENE
35
ENE
35
ENE
30
NE
30
ENE
25
NE
30
NE
20
ENE
20
ENE
20
ENE
10
ESE
Wind State
cross
cross
cross
cross-on
cross
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross-on
cross
cross-on
High Tide
5:18PM0.36m
7:19AM0.59m
5:54PM0.28m
8:36AM0.61m
7:01PM0.22m
9:55AM0.64m
9:27PM0.19m
11:03AM0.68m
11:10PM0.21m
12:00PM0.71m
00:14AM0.26m
12:48PM0.73m
1:03AM0.31m
Low Tide
12:53PM0.23m
11:56PM0.04m
2:47PM0.24m
00:39AM0.05m
5:18PM0.21m
1:39AM0.06m
6:33PM0.16m
3:03AM0.07m
7:10PM0.12m
4:28AM0.06m
7:41PM0.09m
5:40AM0.04m
8:09PM0.07m
clear
clear
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:13
6:15
6:15
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:45
6:45
6:44
6:43
6:42
6:40
 mm
1
Temp °C
26
26
25
26
26
25
25
25
25
25
25
25
26
26
26
26
26
26
26
26
26
Feels °C
24
24
23
23
23
22
21
20
20
19
20
20
24
24
25
25
25
26
26
27
27
  • 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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