Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 7 pm 28 Jul 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
26.7° C
0.3° 

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 29 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 2AM (local time) - 6ft (1.8m), 11s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 29 Jul, 2AM (local time) - 6ft (1.8m), 11s period, ENE swell with 836 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 2AM (local time) - 6ft (1.8m), 11s 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 Wednesday (Jul 29) at 2AM. The primary swell is predicted to be 1.8m and 11s period with a secondary swell of 0.7m and 14s. 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 1.8m 11s and forecast to arrive on Wednesday (Jul 29) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 9s period and expected on Wednesday (Jul 29) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 29th Jul)6ft (1.8m) 11s
Best Surf 2AM (Wed 29th Jul)6ft (1.8m) 11s
Most Powerful 2AM (Wed 29th Jul)6ft (1.8m) 11s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it.

Well, I gotta be straight with you – this run of forecasts is a tough one. We’re looking at a bare stretch starting now, with the first real chance to get wet not showing up until Wednesday afternoon, July 29th. Even then, it’s a pretty grim picture for the most part. The wind is our biggest enemy here, with a relentless cross-shore breeze that's going to chop up most of what the ocean tries to offer.

We’re talking about Duds Reef. It’s a reef setup, intermediate level, and it’s fairly consistent, but it’s up against a wall of easterly wind. The first sniff of anything decent is that Wednesday afternoon window. The wind goes glassy, dead calm, and the swell is a clean 3 ft from the south with a long 14-second period. The combined energy is moderate (543). This is a real moment of stillness. The water temp is about average for the time of year. For a few hours, it’s gonna be absolutely pristine. That’s your stand-out window for the entire first week. A real gem if you can sneak out.

After that, it’s a mess. Thursday the 30th through the weekend and into the next week, that easterly wind just cranks up. We get cross-shore breezes from 12 mph to a nasty 28 mph. The swell does get bigger, hitting 8 ft on Saturday and Sunday, but it’s short-period, 8-second wind slop, and it’s going to be a total washing machine. The combined energy climbs into the strong range (1130) but it’s all noise. This is less about surfing and more about kite-surfing conditions. For a paddle surfer, it’s a write-off.

We then drift into a long stretch of nothingness. From Thursday morning, August 6th, all the way through to Sunday, August 9th, the scores are a zero. The waves are either tiny, blown out, or both. A couple of afternoons on the 10th and 11th of August show a flicker of life – a 4 ft south-southwest groundswell with a 15-second period, and the wind goes light and slightly cross-off, giving us clean conditions. The combined energy is moderate (760). But it’s marginal, and the trend is still not great. The following days on the 12th and 13th just bring back the chop.

So, the honest truth: clear your schedule for Wednesday afternoon, July 29th at Duds Reef. That’s your one shot. The rest of the 16 days is a long, dry gap for quality surf. It’s a bummer, but the forecasts can change. Keep your eyes peeled.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Wed morning, min 25°C on Tue night). Winds increasing (calm on Wed night, strong winds from the ENE by Fri afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Sun afternoon, min 24°C on Fri night). Winds decreasing (strong winds from the ENE on Sat morning, light winds from the NE by Sun night).

Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
2
3
1
1
1
1
0
0
0
0
0
0
0
0
2
0
1
3
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
ENE
11
1.5
ENE
10
0.8
S
14
0.8
S
14
0.8
S
14
0.9
S
13
0.7
SW
16
0.7
SW
16
1.7
E
8
2.1
E
8
2.3
E
8
2.3
E
8
2
E
8
1.8
E
8
1.7
E
8
1.6
E
8
1.3
E
9
1.5
ENE
12
1.3
ENE
12
Wave Graph
Metric surfscale
Energy kJ
836
425
257
243
232
280
268
261
337
555
686
709
572
472
422
360
257
609
511
Wind (km/h)
15
NE
5
S
5
SSW
10
ENE
20
E
25
ENE
20
ENE
35
E
35
ENE
40
ENE
45
ENE
40
ENE
35
ENE
35
ENE
30
ENE
20
NE
25
E
25
ENE
15
NE
Wind State
cross-off
cross-on
glassy
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross
cross
cross-off
High Tide
3:28AM0.31m
4:17PM0.75m
4:07AM0.34m
4:44PM0.73m
4:49AM0.37m
5:10PM0.70m
5:33AM0.41m
5:35PM0.65m
6:22AM0.44m
5:59PM0.58m
7:18AM0.48m
6:23PM0.51m
Low Tide
10:55PM0.16m
8:58AM0.05m
11:17PM0.15m
9:35AM0.07m
11:39PM0.13m
10:13AM0.10m
00:01AM0.12m
10:55AM0.16m
00:23AM0.11m
11:42AM0.22m
00:48AM0.10m
12:42PM0.28m
1:16AM0.09m
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:05
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:12
7:12
7:12
7:10
7:10
7:09
7:09
 mm
Temp °C
26
27
27
26
27
27
26
27
27
25
26
26
25
26
27
25
27
27
25
Feels °C
27
30
30
30
27
29
25
24
23
22
21
21
22
22
24
23
25
24
25
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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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