Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 7 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
27.3°C
0.4° 

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


Duds Reef surf forecast from 4 Sep 2026:

  • Best quality surf: Monday 7 Sep, 2AM (local time) - 7.5ft (2.3m), 14s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Monday 7 Sep, 8PM (local time) - 13ft (4.0m), 14s period, SW swell with 6,967 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 2AM (local time) - 7.5ft (2.3m), 14s period with SSW swell.

Best Forecast Surf Conditions for Duds Reef this week:

The surf forecast for Duds Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 2AM. The primary swell is predicted to be 2.3m and 14s period with a secondary swell of 1.8m and 12s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Duds Reef in the next 16 days are 4.0m 14s and forecast to arrive on Monday (Sep 07) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 11s period and expected on Tuesday (Sep 08) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Mon 7th Sep)7.5ft (2.3m) 14s
Best Surf 2AM (Mon 7th Sep)7.5ft (2.3m) 14s
Most Powerful 8PM (Mon 7th Sep)13ft (4.0m) 14s

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


Short Range Forecast

Light rain (total 8mm), mostly falling on Sun night. Warm (max 27°C on Fri morning, min 24°C on Sun night). Winds decreasing (fresh winds from the ENE on Fri morning, light winds from the ENE by Sun night).

Days 4-6 Weather Summary

Moderate rain (total 11mm), heaviest on Mon night. Warm (max 29°C on Wed afternoon, min 25°C on Wed night). Winds decreasing (fresh winds from the SE on Mon afternoon, calm by Wed morning).

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
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
1
2
1
1
3
1
3
5
0
0
0
0
0
2
2
0
1
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
S
13
1.5
S
13
2.2
E
14
1.8
E
14
1.9
E
13
2.2
ENE
13
2
SSW
12
2.1
SSW
14
2.3
SSW
14
2.5
SW
14
3.5
SW
15
4
SW
12
2
SSW
9
1.2
ENE
11
0.9
SSW
14
0.9
SSW
14
0.9
SSW
13
0.7
SSW
13
1.4
ENE
7
0.6
SSW
18
0.7
SW
16
Wave Graph
Metric surfscale
Energy kJ
713
726
1977
1172
1283
1568
1170
1823
2151
2985
5681
4135
666
353
356
336
257
176
214
211
268
Wind (km/h)
35
ENE
30
ENE
25
ENE
30
ENE
25
ENE
20
ENE
30
E
20
E
15
ENE
25
ESE
35
SE
30
SSE
25
S
15
S
10
ESE
10
SE
20
ENE
25
ENE
30
ENE
30
ENE
20
ENE
Wind State
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-on
cross-on
on
on
on
cross-on
cross-on
cross
cross
cross
cross
cross
High Tide
10:39AM0.65m
11:53AM0.69m
11:42PM0.23m
12:50PM0.73m
00:58AM0.28m
1:37PM0.75m
1:49AM0.35m
2:17PM0.75m
2:33AM0.42m
2:52PM0.72m
3:14AM0.49m
3:25PM0.68m
3:53AM0.55m
Low Tide
3:13AM0.11m
8:07PM0.19m
8:24PM0.16m
6:09AM0.09m
8:46PM0.13m
7:12AM0.08m
9:09PM0.11m
8:06AM0.08m
9:31PM0.09m
8:56AM0.09m
9:53PM0.08m
clear
clear
clear
clear
clear
part cloud
part cloud
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:44
6:43
6:42
6:40
6:39
6:39
 mm
2
6
1
1
5
3
1
Temp °C
27
27
25
27
27
25
27
27
25
27
27
27
27
27
27
28
29
27
26
27
25
Feels °C
23
24
23
25
25
25
25
25
27
27
26
26
28
28
31
31
30
28
24
24
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
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Information about the Duds Reef Surf forecast

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

Duds Reef is 0 km (0 miles) from 'Ewa Beach. If you plan a vacation in Oahu, look for hotels and other accommodation in 'Ewa Beach. 'Ewa Beach has rooms for a wide range of budgets as well as car hire and transport links.

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