Waimanalo Surf Break

Lat Long: 21.35° N 157.70° W

Waimanalo 48 hour detailed Surf Forecast

Issued: 1 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Waimanalo sea temperature is
26.8° C
0.1° 

Waimanalo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Waimanalo today (21 Aug):

  • Morning surf: Morning surf (21 Aug, local time) - 3.5ft (1.0m), 7s period with NE swell.
  • Afternoon surf: Afternoon surf (21 Aug, local time) - 3.5ft (1.0m), 7s period with NE swell.
  • Evening surf: Evening surf (21 Aug, local time) - 4ft (1.2m), 7s period with ENE swell.

The current surf forecast for Waimanalo at 10AM is: 1.0m 7s primary swell from a Northeast direction (forecast issued at 01:00am August 21). An open ocean swell of 0.2m 17s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (HST) & DateWave HeightWave Period
Morning (21 Aug)3.5ft (1.0m)7s
Afternoon (21 Aug)3.5ft (1.0m)7s
Evening (21 Aug)4ft (1.2m)7s

Table - waves today at Waimanalo. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 27°C on Fri afternoon, min 25°C on Sat night). Winds increasing (light winds from the SE on Fri morning, strong winds from the ENE by Sat night).

Friday
21
Saturday
22
Sunday
23
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
1
0
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
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
ENE
7
0.7
ENE
7
0.9
NE
7
1.1
NE
7
1
NE
7
1.1
ENE
7
1.1
ENE
7
1.2
ENE
7
1.3
ENE
7
1.4
ENE
7
1.4
ENE
7
1.5
E
7
1.6
E
7
1.7
E
7
1.9
E
7
2
E
7
2
E
7
1.9
E
7
1.9
E
7
1.9
ENE
7
1.8
ENE
7
1.7
ENE
6
1.7
ENE
6
1.8
E
6
Wave Graph
Metric surfscale
Energy kJ
69
52
79
109
96
117
117
129
137
158
158
212
233
262
326
371
393
366
355
342
290
237
230
251
Wind (km/h)
10
ESE
5
SSE
5
SE
10
E
10
ENE
15
ENE
20
ENE
20
E
20
E
20
E
25
ENE
35
ENE
35
ENE
40
ENE
40
ENE
40
ENE
35
ENE
35
ENE
35
ENE
40
ENE
40
ENE
40
ENE
40
ENE
35
ENE
Wind State
cross-on
cross-off
cross
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
on
cross-on
on
on
on
on
High Tide
12:32PM0.55m
1:04PM0.58m
10:27PM0.27m
1:31PM0.61m
Low Tide
2:41AM0.09m
4:16AM0.08m
9:18PM0.23m
5:19AM0.05m
8:24PM0.22m
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:55
6:54
6:53
 mm
Temp °C
26
26
26
26
27
27
27
26
26
26
26
26
26
26
25
25
25
25
25
25
25
25
25
25
Feels °C
30
30
31
29
30
29
29
27
27
27
26
25
25
24
23
23
23
23
23
22
22
22
22
23
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Waimanalo surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest locationNearest