Irmas/Leftpoint Surf Break

Lat Long: 21.29° N 157.66° W

Irmas/Leftpoint Surf Forecast and Surf Report

Issued: 7 pm 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Irmas/Leftpoint sea temperature is
26.9° 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 17 Aug 2026:

  • Most powerful swell: Monday 17 Aug, 5AM (local time) - 6ft (1.8m), 8s period, ENE swell with 388 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 1.8m 8s and forecast to arrive on Monday (Aug 17) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Friday (Aug 21) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Mon 17th Aug)6ft (1.8m) 8s

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


The Lowdown

Righto, Rusty here. Let’s have a look at what’s cookin’ for the only spot on the cards: Irmas/Leftpoint.

Honestly, mate, it’s a bit of a tough stretch ahead. The forecast is showing a solid 16-day run, but the first week and a half are looking pretty average. You’ve got persistent cross to cross-onshore winds from the ENE at 18 to 19 mph, which is keepin’ the surface all lumpy and choppy – not the clean lines we’re after. The swell is mostly short-period windswell around 6 to 8 seconds, so not a lot of grunt or shape. The combined energy readings hover between 104 and 678, which is weak to moderate energy, and the scores reflect that – just poor surf conditions through the end of August. There’s a gap of solid poor surf until we get a sniff of something better.

The real standout, the only one worth gettin’ excited about, shows up right at the end of the forecast. We’re talkin’ about Friday the 28th of August through Saturday the 29th of August. That’s when a proper groundswell pushes in from the ENE with a period bumpin’ up to 11 seconds. Swell size climbs to around 12 ft, so this is expert territory only – too big for beginners by a long shot. The combined energy rockets up to between 2687 and 3069, which is strong, and while the wind is still cross-shore from the ENE at 15-19 mph, it’s a moderate breeze, better than the fresh stuff we saw earlier. Be aware, this is a long-period groundswell and it’s coming from the ENE, which is not the optimum ESE direction for this reef break – it might not line up perfectly, so don’t expect perfection. But for size and power, it’s the best on offer.

The rest of the period after that drops back off quick. By Sunday the 30th of August, the swell collapses to 2 ft from the SSW with a long 16-second period, but the wind’s back up to a fresh 22 mph cross-shore, so it’s unsurfable. Monday the 31st and Tuesday the 1st of September bring some size back, but with a rating of 1 out of 10 and poor to marginal conditions, it’s not worth gettin’ the boards out.

So, to sum it up: a long stretch of crud, then a brief window of big, raw power for the experienced crew on the 28th-29th, but even then, it’s a gamble with the wind direction. Keep an eye on that Friday swell – it’s the only real chance for a session.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Sun night. Warm (max 27°C on Sun night, min 24°C on Mon night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Sat afternoon, min 25°C on Wed night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
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
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
ENE
8
1.7
ENE
8
0.8
S
14
1.4
ENE
7
1.4
ENE
7
1.3
ENE
7
1.2
ENE
8
0.9
E
8
0.8
E
8
0.8
E
8
0.6
SSW
18
0.6
SSW
17
1
NE
7
1
ENE
7
0.9
ENE
7
0.8
SSW
16
1.2
ENE
6
1.4
ENE
6
1.6
E
7
Wave Graph
Metric surfscale
Energy kJ
452
338
261
203
175
171
178
109
100
82
207
202
104
108
83
322
107
170
233
Wind (km/h)
20
E
30
ENE
30
ENE
30
ENE
25
ENE
25
ENE
25
ENE
20
ENE
25
NE
25
NE
20
NE
20
NE
15
NE
15
ENE
20
ENE
20
ENE
20
ENE
25
ENE
25
ENE
Wind State
cross-on
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
High Tide
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
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
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
4
Temp °C
27
25
25
25
25
25
25
25
25
25
25
25
25
25
26
26
26
27
26
Feels °C
28
25
24
24
23
23
24
25
25
25
26
25
26
27
28
27
28
27
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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