Waialua Rivermouth Surf Break

Lat Long: 21.10° N 156.76° W

Waialua Rivermouth 48 hour detailed Surf Forecast

Issued: 7 am 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Waialua Rivermouth sea temperature is
26.6° C
0.1° 

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


How big are the waves at Waialua Rivermouth today (12 Aug):

  • Morning surf: Morning surf (12 Aug, local time) - 4.5ft (1.4m), 7s period with ENE swell.
  • Afternoon surf: Afternoon surf (12 Aug, local time) - 5ft (1.6m), 6s period with ENE swell.
  • Evening surf: Evening surf (12 Aug, local time) - 5ft (1.6m), 6s period with ENE swell.

The current surf forecast for Waialua Rivermouth at 10AM is: 1.4m 7s primary swell from a East-northeast direction (forecast issued at 07:00am August 12). An open ocean swell of 0.4m 13s is not directed at the surf break, a second open ocean swell of 0.3m 18s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (HST) & DateWave HeightWave Period
Morning (12 Aug)4.5ft (1.4m)7s
Afternoon (12 Aug)5ft (1.6m)6s
Evening (12 Aug)5ft (1.6m)6s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Fri night. Warm (max 26°C on Wed morning, min 25°C on Wed morning). Mainly strong winds.

Wednesday
12
Thursday
13
Friday
14
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
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)
1.3
E
8
1.4
ENE
7
1.4
ENE
7
1.6
ENE
6
1.6
ENE
6
1.6
ENE
6
1.6
ENE
6
1.6
ENE
6
1.6
E
6
1.6
ENE
6
1.7
ENE
6
1.7
ENE
6
1.9
ENE
6
2.2
ENE
6
2.2
ENE
7
2
ENE
7
2.1
ENE
8
2.2
ENE
7
2.2
ENE
7
2.2
ENE
8
2.2
ENE
9
2.3
ENE
10
2.5
ENE
10
Wave Graph
Metric surfscale
Energy kJ
191
214
197
186
186
176
179
186
181
205
230
237
272
386
410
392
520
445
471
660
724
901
1176
Wind (km/h)
20
ENE
25
ENE
25
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
ENE
25
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
Wind State
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
cross-on
cross-on
cross
cross-on
cross
cross
cross
cross-on
cross
High Tide
2:36AM0.34m
3:10PM0.79m
3:23AM0.39m
3:45PM0.74m
4:11AM0.44m
4:18PM0.67m
Low Tide
8:19AM-0.02m
10:18PM0.04m
9:08AM0.01m
10:47PM0.04m
9:58AM0.07m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:59
6:58
6:57
 mm
1
Temp °C
25
25
26
26
25
25
26
25
26
26
26
26
26
26
25
25
25
26
26
26
26
25
25
Feels °C
24
23
25
24
23
23
25
24
25
25
25
24
24
24
23
23
23
23
24
24
24
23
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 

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