Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 7 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
27.0° 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 5 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 5AM (local time) - 1.5ft (0.4m), 15s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 12 Aug, 2PM (local time) - 3.5ft (1.1m), 18s period, S swell with 749 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 5AM (local time) - 1.5ft (0.4m), 15s 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 Thursday (Aug 06) at 5AM. The primary swell is predicted to be 0.4m and 15s period with a secondary swell of 0.6m and 5s. Another secondary swell of 0.5m 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 1.1m 18s and forecast to arrive on Wednesday (Aug 12) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 7s period and expected on Sunday (Aug 09) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 6th Aug)1.5ft (0.4m) 15s
Best Surf 5AM (Thu 6th Aug)1.5ft (0.4m) 15s
Most Powerful 2PM (Wed 12th Aug)3.5ft (1.1m) 18s

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


The Lowdown

G’day, Rusty here. Let’s be straight up – this 16-day run is one of the quietest stretches I’ve seen in a while around here. There’s a long gap, basically the first week, with nothing worth paddling out for. The first real sniff of anything comes on Wednesday, 12 August, and even then, it’s marginal. For a reef that’s fairly consistent, this blank run is pretty unusual, but sometimes the ocean just shuts down.

Alright, let’s talk about Duds Reef. For the first week, from Wednesday 5 August right through to Tuesday 11 August, it’s all “poor surf conditions” – cross-wind, cross-chop, and very little push. The water temp is sitting at 81°F with about average conditions for this time of year, but honestly, the waves are so weak you won’t be in the water long enough to notice.

Wednesday 12 August is the first day where things get just barely interesting. The swell picks up to 3 ft from the S, with a long period of 18 seconds – that’s proper groundswell energy. The combined energy is 1054 (moderate to strong), so there’s some grunt in the water. The catch is the wind is cross-shore from the ENE at 16 mph, keeping things messy. This is a reef break, and long-period S swells can work well here if the direction lines up, but the optimum swell direction for Duds Reef is from the SSE, so the S direction is a little off. It’s only a 1 out of 10, so it’s a marginal call – maybe worth a look if you’re desperate, but I wouldn’t get the hopes up.

After that, the rest of the period, from Thursday 13 August right through to Thursday 20 August, slides back into poor surf. The swell stays small, mostly under 4 ft, with periods all over the place, but the wind never lets up – cross-shore and often strong, with a fresh to strong breeze (19-25 mph). On Saturday 15 August afternoon, there’s a 6 ft E swell, but it’s short period at 7 seconds and still cross-wind – messy, lumpy, and not worth paddling for. For surfers, this is a write-off. If you’ve got a kite, the beach setup might look more interesting on those windy days, but for a paddle, this reef is staying quiet.

So the bottom line: There’s no standout here, not even close. The only day that might offer a wave is Wednesday 12 August, and it’s marginal at best. Patrol the coffee shop instead.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Wed morning, min 24°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 28°C on Mon afternoon, min 24°C on Mon night). Mainly fresh winds.

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
0.9
ENE
10
1.1
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
0.6
SSW
14
0.6
SSW
18
0.5
SW
18
0.6
SSW
17
1.3
E
7
1.6
E
7
0.8
SSW
16
0.6
SSW
15
0.7
SSW
15
0.7
SSW
15
0.9
SSW
14
0.9
SSW
14
0.8
S
20
Wave Graph
Metric surfscale
Energy kJ
160
203
107
81
102
138
76
99
148
221
154
202
181
277
288
184
234
240
301
289
485
Wind (km/h)
20
ENE
20
ENE
15
ENE
20
E
20
ENE
15
ENE
25
ENE
25
ENE
25
ENE
35
ENE
30
ENE
30
ENE
25
ENE
30
ENE
25
ENE
25
E
25
ENE
20
NE
25
ENE
20
ENE
25
ENE
Wind State
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross
cross
cross
High Tide
9:44AM0.57m
6:58PM0.36m
11:04AM0.63m
12:14PM0.69m
10:37PM0.24m
1:11PM0.75m
00:30AM0.24m
2:00PM0.80m
1:39AM0.27m
2:43PM0.83m
2:33AM0.31m
3:23PM0.83m
3:22AM0.36m
Low Tide
4:49PM0.35m
2:38AM0.08m
3:41AM0.08m
8:48PM0.23m
9:04PM0.19m
6:05AM0.04m
9:29PM0.15m
7:07AM0.02m
9:56PM0.13m
8:02AM0.01m
10:23PM0.11m
part cloud
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clear
clear
part cloud
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part cloud
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part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
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<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:07
6:07
6:07
6:07
6:07
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:07
7:07
7:07
7:06
7:05
7:05
 mm
Temp °C
27
27
26
27
27
25
26
27
25
27
27
25
26
27
25
27
28
26
27
28
26
Feels °C
27
26
27
27
27
25
25
26
25
25
24
23
25
26
24
27
28
27
26
27
27
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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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