Waialua Rivermouth Surf Break

Lat Long: 21.10° N 156.76° W

Waialua Rivermouth 48 hour detailed Surf Forecast

Issued: 1 am 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Waialua Rivermouth sea temperature is
26.5° C
0.4° 

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 (20 Jul):

  • Morning surf: Morning surf (20 Jul, local time) - 3.5ft (1.1m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (20 Jul, local time) - 4.5ft (1.4m), 7s period with ENE swell.
  • Evening surf: Evening surf (20 Jul, local time) - 5ft (1.5m), 7s period with ENE swell.

The current surf forecast for Waialua Rivermouth at 8AM is: 1.1m 8s primary swell from a East direction and 0.9m 8s secondary swell from a North-northeast direction (forecast issued at 01:00am July 20). The wind direction is predicted to be cross-onshore.

Time (HST) & DateWave HeightWave Period
Morning (20 Jul)3.5ft (1.1m)8s
Afternoon (20 Jul)4.5ft (1.4m)7s
Evening (20 Jul)5ft (1.5m)7s

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


Short Range Forecast

Light rain (total 4mm), mostly falling on Mon morning. Warm (max 26°C on Mon morning, min 24°C on Tue night). Mainly fresh winds.

Monday
20
Tuesday
21
Wednesday
22
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
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)
1.2
E
8
1.2
E
8
1.1
E
8
1.4
ENE
8
1.4
ENE
7
1.4
ENE
7
1.5
ENE
7
1.5
ENE
7
1.5
ENE
7
1.6
ENE
7
1.6
ENE
7
1.6
ENE
7
1.5
ENE
7
1.5
ENE
7
1.5
ENE
7
1.7
ENE
7
1.7
ENE
7
1.6
ENE
7
1.5
ENE
7
1.4
ENE
7
1.2
ENE
7
1.7
ENE
6
1.9
ENE
6
1.9
ENE
6
Wave Graph
Metric surfscale
Energy kJ
173
164
135
226
220
208
231
212
206
220
214
220
192
198
198
247
247
220
195
171
129
194
255
238
Wind (km/h)
20
E
15
ENE
15
ENE
20
ENE
20
ENE
25
ENE
25
ENE
25
E
20
E
20
ENE
20
E
20
ENE
20
ENE
25
ENE
25
ENE
25
E
25
E
30
E
30
ENE
25
ENE
25
ENE
25
ENE
30
ENE
30
E
Wind State
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
High Tide
8:55AM0.48m
7:09PM0.40m
10:04AM0.54m
7:42PM0.32m
11:04AM0.59m
8:46PM0.26m
Low Tide
1:55AM0.03m
2:54PM0.28m
2:30AM0.04m
5:22PM0.28m
3:09AM0.05m
7:35PM0.23m
clear
clear
part cloud
rain showers
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
rain showers
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:09
7:08
 mm
1
1
1
Temp °C
25
25
25
26
26
26
25
25
25
25
25
25
26
25
25
25
24
25
25
25
25
25
25
24
Feels °C
24
25
26
26
26
25
24
23
24
24
25
25
25
24
24
24
23
23
23
23
24
23
23
22
  • 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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