Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 7 am 15 Aug 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
27.1° 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 15 Aug 2026:

  • Best quality surf: Friday 21 Aug, 5AM (local time) - 2.5ft (0.8m), 17s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 15 Aug, 8PM (local time) - 16ft (5.0m), 10s period, E swell with 5,225 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 2AM (local time) - 2.5ft (0.7m), 8s period with E 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 2AM. The primary swell is predicted to be 0.7m and 8s period. 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 5.0m 10s and forecast to arrive on Saturday (Aug 15) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Friday (Aug 21) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Fri 21st Aug)2.5ft (0.7m) 8s
Best Surf 5AM (Fri 21st Aug)2.5ft (0.8m) 17s
Most Powerful 8PM (Sat 15th Aug)16ft (5.0m) 10s

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


The Lowdown

Alright folks, Rusty here. Let’s take a look at what’s coming up for Irmas/Leftpoint. I gotta be straight with you – the next couple of weeks are looking pretty grim for a proper paddle. The forecast is a long stretch of poor surf conditions, so we’re in for a bit of a dry spell, but don't let it get you down too much.

Right off the bat, this Saturday morning (15th August) we’ve got a solid 13 ft swell from the east, but it’s getting absolutely hammered by a near gale cross-shore wind at 34 mph. The combined energy reading is a massive 3077 (strong to very strong wave energy), but with that wind, it’s nothing but a washing machine. That energy is just getting blown to bits. Forget about it for a paddle. The water temp is sitting at 81°F, which is about average for this time of year, so at least a dip won’t be a shock.

The whole first week, right through to the 22nd, is a write-off. We’re looking at a mix of cross-shore and cross-onshore winds, mostly from the ENE, with speeds that are either fresh or moderate breezes. The swell hangs around the 3 ft to 8 ft mark, but it’s all sloppy, lumpy, and choppy. Not a single moment where the wind drops and cleans it up. The wind state is just a constant battle.

Around the 20th and 21st, we get a tease of some long-period SSW groundswell (17-18 seconds), but it’s tiny – only 2 ft to 4 ft. The wind is still cross-shore, so it’s not going to offer any quality. Combined energy drops to a weak 153 (gentle breeze conditions), so it’s basically a lake with a tiny bump.

The best chance, and I’m using that word loosely, comes right at the tail end of the forecast. On the 27th and 28th of August, we see a bigger easterly swell pushing up to 5 ft to 6 ft, with a very long period of 16-18 seconds. The combined energy jumps back into the thousands (2076 to 2468), indicating strong wave energy. This is proper groundswell, and on a reef setup like Irmas/Leftpoint, that long period could mean some nicely shaped, powerful lines. The caveat? The wind is still a fresh breeze from the ENE, but it’s cross-shore rather than onshore. That could make it semi-rideable, and the Thursday afternoon (27th) and Friday afternoon (28th) are rated as “marginal” rather than a total zero. This is the only standout in the whole two weeks, but it’s a long-range call, so keep your fingers crossed it cleans up a bit. It’s going to be too big for beginners though, with the swell over 5 ft. For that same reason, by the 30th, the swell is up to 8 ft, which is only for the experts.

So, bottom line: you’ve got about a week and a half of pure junk. The only flicker of hope is that last weekend in August, with the 27th and 28th being the only days worth a second look. This spot is fairly consistent, so it’s a bit of a surprise to see such a blank run, but forecasts can change. Stay tuned.

Rusty.

Short Range Forecast

Heavy rain (total 34mm), heaviest during Sun morning. Warm (max 26°C on Sat morning, min 24°C on Sat night). Winds decreasing (near gales from the ENE on Sat night, moderate winds from the E by Sun night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 25°C on Tue morning, min 24°C on Tue night). Mainly fresh winds.

Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
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
0
0
0
0
0
1
0
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)
4
E
9
4.5
E
10
3.5
E
10
2.5
ENE
8
2.4
ENE
8
2
ENE
8
1.7
ENE
7
1.6
ENE
7
1.4
ENE
7
1.5
ENE
6
0.6
S
13
1.2
ENE
8
1
E
8
0.9
E
8
0.9
E
8
0.6
SSW
18
0.6
SSW
17
0.7
E
8
0.6
E
8
0.8
NE
7
0.8
SSW
16
Wave Graph
Metric surfscale
Energy kJ
2702
4189
2608
936
763
472
302
257
203
140
121
202
138
107
102
207
202
60
50
55
322
Wind (km/h)
55
NE
60
ENE
50
E
25
E
25
ENE
20
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
25
ENE
20
ENE
25
ENE
20
ENE
20
ENE
20
NE
15
NNE
15
NE
20
NE
15
ENE
Wind State
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross-on
cross-on
cross
cross
cross
cross
cross-off
cross
cross
cross
High Tide
4:53PM0.55m
5:55AM0.48m
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
Low Tide
10:54AM0.13m
11:44PM0.05m
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
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
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
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
6:59
6:58
6:57
6:57
6:55
 mm
1
1
8
15
6
3
1
Temp °C
26
26
26
26
26
26
25
25
25
25
25
25
25
25
25
25
25
25
26
26
26
Feels °C
21
21
20
27
27
27
24
23
23
23
22
23
25
24
25
25
25
26
28
28
28
  • 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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