Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 1 am 02 Aug 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
27.1° C
0.6° 

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 2 Aug 2026:

  • Best quality surf: Tuesday 4 Aug, 2AM (local time) - 3.5ft (1.1m), 12s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Sunday 2 Aug, 8AM (local time) - 6ft (1.9m), 8s period, E swell with 512 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 4 Aug, 2AM (local time) - 3.5ft (1.1m), 12s period with ENE 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 Tuesday (Aug 04) at 2AM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 0.5m and 12s. Another secondary swell of 1.1m and 8s is also forecast. 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 1.9m 8s and forecast to arrive on Sunday (Aug 02) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 8s period and expected on Friday (Aug 07) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Tue 4th Aug)3.5ft (1.1m) 12s
Best Surf 2AM (Tue 4th Aug)3.5ft (1.1m) 12s
Most Powerful 8AM (Sun 2nd Aug)6ft (1.9m) 8s

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


The Lowdown

Right, mate, Rusty here. Let’s be honest – this outlook is a tough one. We’re looking at Duds Reef, and the name fits the forecast for the most part. The whole 16-day window is a real struggle, with long gaps of nothing worth paddling out for. The wind is a persistent enemy, howling from the ENE almost every day, keeping the surface lumpy and chopped. There’s a massive gap from the start right through to the end of the first week with no real opportunities.

The first faint glimmer comes on Tuesday, the 4th of August. In the afternoon, the wind drops right back to a light 3.1 mph cross-offshore breeze, and the water goes clean. The swell is a modest 3.3 ft from the east with a long 11-second period, giving it some shape. The combined energy is moderate at 414. It’s not big, but it’s the cleanest surf we’ll see for a while, and the water temperature is 80.8°, about normal for this time of year. This is the best of a quiet bunch.

Then it’s back to the waiting game. The next real standout doesn’t pop up until Wednesday, the 12th of August. The swell builds nicely, with a 4.3 ft south groundswell on a very long 17-second period, and the energy jumps to 1240 – that’s strong wave energy. The problem is the wind hasn’t learned its lesson. It’s still a fresh 21.7 mph cross-shore from the ENE, making it a lumpy, choppy mess. For a reef break like this, that long-period south swell could be phenomenal if the wind ever cooperates, but with this wind, it’s more of a kite session. It’s only for the experts who don’t mind the battle.

Honestly, if you’re deadset on a wave, the best chance you have is that Tuesday afternoon session on the 4th. It’s small, clean, and glassy. For the rest of the window, it’s a long, frustrating wait for the wind to play fair. The forecasts can change, but right now, this is a dry spell.

Short Range Forecast

Mostly dry. Warm (max 28°C on Mon afternoon, min 24°C on Sun night). Winds decreasing (fresh winds from the ENE on Sun afternoon, light winds from the NE by Tue afternoon).

Days 4-6 Weather Summary

Mostly dry. Warm (max 28°C on Wed afternoon, min 25°C on Wed morning). Winds increasing (calm on Wed afternoon, fresh winds from the ENE by Fri night).

Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
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
2
0
0
3
0
2
2
1
2
1
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
E
8
1.7
E
8
1.5
E
8
1.3
E
8
1.1
ENE
8
1.1
ENE
12
1.1
E
11
1
E
11
1
ENE
10
0.9
ENE
10
0.9
ENE
9
0.5
SW
15
0.4
SSW
14
0.5
SW
14
0.6
SSW
14
0.4
SSW
14
0.4
SW
20
1.3
ENE
7
1.5
E
7
1.4
E
7
1.7
E
7
Wave Graph
Metric surfscale
Energy kJ
461
412
316
234
180
355
297
233
231
169
119
107
81
102
138
76
99
161
220
192
295
Wind (km/h)
30
ENE
35
ENE
25
NE
20
ENE
25
ENE
10
NE
15
E
5
NE
10
NE
10
E
5
NE
15
ENE
15
E
25
ENE
20
ENE
30
ENE
25
ENE
30
ENE
35
ENE
35
ENE
35
ENE
Wind State
cross
cross
cross-off
cross
cross
cross-off
cross-on
cross-off
cross-off
cross
glassy
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
5:59PM0.58m
7:18AM0.48m
6:23PM0.51m
8:25AM0.52m
6:46PM0.44m
9:44AM0.57m
6:58PM0.36m
11:04AM0.63m
12:14PM0.69m
10:37PM0.24m
1:11PM0.75m
00:30AM0.24m
Low Tide
11:42AM0.22m
00:48AM0.10m
12:42PM0.28m
1:16AM0.09m
2:09PM0.34m
1:51AM0.09m
4:49PM0.35m
2:38AM0.08m
3:41AM0.08m
8:48PM0.23m
9:04PM0.19m
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:05
6:05
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:09
7:08
7:07
7:07
7:07
7:07
 mm
Temp °C
27
27
25
27
28
25
27
27
26
26
28
26
27
28
25
27
27
26
27
27
25
Feels °C
24
23
23
26
26
25
28
29
29
28
31
27
28
28
25
25
25
26
24
23
23
  • Map Icons:
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  • 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 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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