Waimanalo surf break

Waimanalo surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 7 am Monday 18 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Waimanalo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waimanalo sea temperature is
25.3° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Waimanalo this week:

The most powerful waves expected at Waimanalo in the next 16 days are 3.0m 8s and forecast to arrive on Thursday (May 21) at 11PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 15s period and expected on Monday (May 18) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Thu 21st May)10ft (3.0m) 8s

Table - best surf conditions forecast for Waimanalo over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Tue morning. Warm (max 24°C on Mon morning, min 23°C on Tue night). Mainly strong winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Thu morning, min 23°C on Thu morning). Mainly strong winds.

Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
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
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)
1.8
ENE
8
1.8
ENE
8
1.5
E
8
1.5
E
8
1.6
ENE
8
1.9
ENE
8
2.2
ENE
8
2.3
ENE
8
2.4
ENE
8
2.5
ENE
8
3
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.5
ENE
8
2.4
ENE
8
2.4
ENE
8
2.5
ENE
8
2.3
ENE
8
2.1
ENE
8
2.1
ENE
8
Wave Graph
Metric surfscale
Energy kJ
427
427
294
272
333
438
528
686
745
956
1026
1000
891
745
817
759
759
817
731
623
608
Wind (km/h)
35
ENE
30
ENE
25
ENE
30
ENE
35
ENE
35
ENE
40
ENE
40
ENE
40
ENE
45
ENE
45
ENE
45
ENE
40
ENE
40
ENE
40
ENE
40
ENE
40
ENE
45
ENE
40
ENE
35
ENE
35
ENE
cross-on
on
cross-on
cross-on
on
on
cross-on
on
cross-on
on
on
cross-on
on
on
on
on
on
cross-on
on
on
cross-on
High Tide
5:08PM0.69m
2:17AM0.25m
6:04PM0.66m
7:03PM0.62m
8:01PM0.58m
7:00AM0.16m
8:56PM0.54m
10:20AM0.22m
9:41PM0.49m
11:46AM0.31m
10:17PM0.45m
Low Tide
9:03AM-0.17m
00:21AM0.21m
9:49AM-0.14m
10:37AM-0.08m
11:31AM-0.02m
5:02AM0.14m
4:54AM0.10m
2:07PM0.14m
5:08AM0.07m
3:52PM0.20m
part cloud
clear
part cloud
thunderstorm
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:50
5:50
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:02
7:02
7:04
7:04
7:04
7:05
7:05
1
Temp °C
24
24
24
24
24
24
24
24
23
23
23
23
23
23
23
23
23
23
23
23
23
24
22
23
23
23
22
20
20
18
18
17
17
17
17
18
19
17
18
18
18
19
Swell 1
Height (m)
Direction
Period (s)
0.2
SSW
14
0.3
SSW
16
0.3
NW
11
0.4
NNW
12
0.4
NW
11
0.4
NNW
11
0.5
NNW
10
0.5
NNW
11
0.4
NNW
10
0.3
NNW
10
0.2
NNW
10
0.3
SSW
15
0.4
NW
10
0.4
NW
11
0.4
NW
11
0.4
NW
10
0.4
NW
15
0.5
NW
13
0.5
NW
12
0.5
NW
12
0.5
NW
11
Energy kJ
20
48
19
54
29
45
62
65
42
19
9
42
26
30
30
27
54
87
74
69
60
Swell 2
Height (m)
Direction
Period (s)
0.2
NNW
13
0.2
NNW
12
0.2
SSW
14
0.3
SSW
14
0.3
SSW
17
0.3
SSW
16
0.3
SSW
14
0.2
SSW
14
0.2
S
16
0.2
S
16
0.2
S
16
0.2
NNW
10
0.2
S
14
0.2
S
14
0.3
S
16
0.3
S
16
0.3
S
15
0.3
S
15
0.3
S
13
0.3
S
13
0.3
S
14
Energy kJ
18
15
18
40
59
47
41
19
21
20
19
10
16
14
47
45
39
38
32
32
37
Swell 3
Height (m)
Direction
Period (s)
0.2
NNW
9
0.2
NNW
9
0.2
NNW
13
0.2
SSW
18
0.3
NNW
12
0.3
NNW
12
0.1
S
18
0.2
S
18
0.2
SSW
13
0.2
SSE
13
0.2
SSE
13
0.2
SSE
13
0.2
SSE
12
0.2
S
18
0.2
S
13
0.2
NNW
16
0.4
NW
10
0.2
NNW
10
0.2
S
16
0.1
S
16
0.1
S
21
Energy kJ
8
8
17
30
30
30
6
24
17
17
17
16
14
25
14
25
26
9
21
5
9
Wind waves
Height (m)
Direction
Period (s)
1.8
ENE
8
1.8
ENE
8
1.5
E
8
1.5
E
8
1.6
ENE
8
1.9
ENE
8
2.2
ENE
8
2.3
ENE
8
2.4
ENE
8
2.5
ENE
8
3
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.5
ENE
8
2.4
ENE
8
2.4
ENE
8
2.5
ENE
8
2.3
ENE
8
2.1
ENE
8
2.1
ENE
8
Energy kJ
427
427
294
272
333
438
528
686
745
956
1026
1000
891
745
817
759
759
817
731
623
608
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
2
1
2
1
2
1
1
1
1
1
1
2
1
1
1
1
1
1
Distance (km)
44
50
44
44
50
44
50
52
58
146
118
118
117
146
55
118
118
117
120
116
50
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
2
2
2
2
1
2
2
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
3
2
4
3
3
3
3
2
3
1
3
2
1
1
2
3
1
2
Header Global
Rating
(10 max)
4
4
4
5
5
5
4
4
4
5
5
7
5
5
7
9
5
4
4
5
6
  • 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 Waimanalo Surf forecast

The above surf forecast table for Waimanalo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waimanalo can be found by selecting the local surf guide option on the grey menu. Our Waimanalo 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 (Waimanalo) 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 Waimanalo 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.

Waimanalo is 7 km (4 miles) from 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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