Irmas/Leftpoint surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 7 pm Friday 17 Apr 2026 HST
Forecast update in hr  min  s Forecast update imminent
Irmas/Leftpoint surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Irmas/Leftpoint sea temperature is
24.6° C
(Which is normal for this time of year)

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 Tuesday (Apr 21) at 5PM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 0.8m and 8s. 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 1.4m 14s and forecast to arrive on Wednesday (Apr 22) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 14s period and expected on Wednesday (Apr 22) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Tue 21st Apr)2.5ft (0.7m) 16s
Best Surf11PM (Tue 21st Apr)3.5ft (1.1m) 15s
Most Powerful 5AM (Wed 22nd Apr)4.5ft (1.4m) 14s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Sun night. Warm (max 24°C on Sat afternoon, min 23°C on Fri night). Winds decreasing (fresh winds from the ENE on Sat morning, light winds from the ENE by Mon morning).

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Mon night. Warm (max 25°C on Wed afternoon, min 23°C on Mon night). Wind will be generally light.

Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Fri
24
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
2
3
2
3
1
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.5
S
1.2
E
1.3
E
1.3
E
0.9
E
0.9
E
1
E
0.8
E
0.8
E
0.6
E
0.7
NNE
0.7
NNE
1.3
NNE
1.4
NNE
1.3
NNE
1.2
NNE
1
NNE
0.9
NNE
0.8
NNE
0.7
NNE
0.6
NNE
Period(s) (?)125666665778161413121211101099
Wave
Graph
(?)Metric surfscale
Energy kJ (?)8077132132585464376137552377326905253922221701097353
Wind
(km/h)
20
NE
25
ESE
20
ENE
15
ENE
15
ENE
15
ENE
15
E
10
ENE
10
SSE
10
SSW
5
SSW
5
W
10
NE
10
NE
15
NE
15
NE
20
NE
25
NE
25
ENE
20
ENE
25
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
crosscrosscross-
on
crosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
off
cross-
off
crosscross-
off
crosscrosscrosscrosscrosscross
High Tide
/ height (m)
3:14AM
0.25
4:17PM
0.67
3:56AM
0.19
5:07PM
0.67
4:43AM
0.14
6:03PM
0.65
5:47AM
0.10
7:06PM
0.62
7:25AM
0.09
8:15PM
0.58
9:25AM
0.12
9:24PM
0.55
10:52AM
0.18
Low Tide
/ height (m)
10:33PM
0.02
9:14AM
-0.12
11:37PM
0.03
9:47AM
-0.11
12:49AM
0.03
10:26AM
-0.08
2:11AM
0.04
11:11AM
-0.05
3:35AM
0.03
12:12PM
0.01
4:40AM
0.01
1:41PM
0.06
5:25AM
-0.01
3:28PM
0.09
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Fri
24
Sunrise-6:09--6:07--6:07--6:05--6:05--6:05--6:03-
Sunset--6:50--6:51--6:51--6:52--6:52--6:52--6:52
part cloud
part cloud
clear
part cloud
part cloud
part cloud
thunderstorm
clear
part cloud
thunderstorm
clear
rain showers
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
Rain (mm)
------1--2-1---------
Temp. °C232324232324242424242424242425242424232324
Feels °C (?)222125232326242626262726272626252524232323
  • 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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