Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 1 pm 25 Jul 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
26.8° 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 26 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 2AM (local time) - 8ft (2.4m), 12s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 28 Jul, 8PM (local time) - 7.5ft (2.3m), 13s period, E swell with 1,834 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 2AM (local time) - 8ft (2.4m), 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 Wednesday (Jul 29) at 2AM. The primary swell is predicted to be 2.4m and 12s period with a secondary swell of 0.8m 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 2.3m 13s and forecast to arrive on Tuesday (Jul 28) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Tuesday (Jul 28) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 29th Jul)8ft (2.4m) 12s
Best Surf 2AM (Wed 29th Jul)8ft (2.4m) 12s
Most Powerful 8PM (Tue 28th Jul)7.5ft (2.3m) 13s

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


The Lowdown

Alright, Rusty here. Let's get into it.

Right off the bat, I gotta be honest with you – the next 16 days around Duds Reef are looking pretty grim. We’ve got a solid run of onshore and cross-shore winds that are just gonna mess things up. The water temp is sitting at 80°F, which is about average for this time of year, so no surprises there.

The first real chance we see is on the morning of Tuesday, July 28th. We’ve got a 6ft swell coming from the east, with a period of 13 seconds. That's a decent groundswell, and the wind is a cross-offshore breeze, which will keep the surf clean. The combined energy is pretty meaty at 1459, so there’s some power behind it. This is our standout, but it’s still a marginal call – the waves are getting up there, over 5ft, so it’s bordering on being too much for beginners. The east swell direction isn't ideal for the optimum SSE direction this spot loves, but with clean conditions, it’s worth a look.

The afternoon of the same day sees the swell bump up to 7ft and the energy jumps to 1757. That’s solid, but it’s getting into expert territory. The wind holds clean, so if you’re an experienced surfer, that Tuesday afternoon window is the best on offer.

After that, it’s a slow decline. Wednesday the 29th brings a 7ft swell from the ENE, but with a cross-onshore wind and a risk of thunderstorms, it’s chop city. The period drops to 11 seconds, and the energy is still strong at 1338, but the wind is just not your friend. From Thursday the 30th all the way through to the end of the forecast on the 9th of August, it’s basically a write-off. The swell hangs around, but it’s almost always cross-shore with strong winds, making it lumpy and messy. A few sessions have a swell over 5ft, but the wind is so bad it’s more of a kite-surfing setup than a paddle session.

The only other tiny glimmer is the morning of Wednesday, August 5th. We get a tiny 1ft swell from the SSW with a very long 15-second period, and the wind is cross-offshore, so it’s clean. But the energy is weak at 248, and it’s such a small, long-period swell that it’s probably only going to break on the reef at a very specific tide. Not really a goer.

So, the bottom line: Tuesday, July 28th is your best bet. The morning is okay for intermediates, the afternoon is for the experts. After that, you’re waiting a long time for anything decent. Sometimes the forecasts change, but right now, this is a pretty blank run for Duds Reef.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Sat afternoon, min 24°C on Sat night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Wed afternoon. Warm (max 28°C on Tue afternoon, min 25°C on Tue night). Winds increasing (calm on Wed morning, strong winds from the ENE by Fri morning).

Sat
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
3
1
1
2
0
0
3
3
3
4
2
1
2
1
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
SSW
18
1
SSW
18
1
SSW
16
0.9
SSW
16
1.1
E
15
1.2
E
14
1.2
E
13
2
E
13
1.9
E
13
2.1
E
13
2.4
ENE
12
2.2
ENE
11
1.7
ENE
10
0.8
SSW
14
0.8
S
14
1.5
ENE
8
1.5
E
8
1.6
E
8
1.8
E
7
2.2
E
8
Wave Graph
Metric surfscale
Energy kJ
692
662
568
452
506
546
499
1419
1266
1514
1590
1121
559
254
235
253
259
287
358
564
Wind (km/h)
35
ENE
25
NE
30
ENE
30
ENE
20
ENE
25
ENE
30
ENE
20
NE
20
NE
25
NE
10
N
15
SW
10
SSW
10
ESE
15
E
25
E
20
ENE
40
ENE
35
ENE
35
ENE
Wind State
cross
cross-off
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
High Tide
2:09PM0.70m
1:28AM0.26m
2:45PM0.72m
2:12AM0.27m
3:17PM0.74m
2:51AM0.29m
3:48PM0.75m
3:28AM0.31m
4:17PM0.75m
4:07AM0.34m
4:44PM0.73m
4:49AM0.37m
5:10PM0.70m
Low Tide
9:50PM0.20m
6:58AM0.08m
10:10PM0.18m
7:41AM0.05m
10:32PM0.17m
8:21AM0.04m
10:55PM0.16m
8:58AM0.05m
11:17PM0.15m
9:35AM0.07m
11:39PM0.13m
10:13AM0.10m
00:01AM0.12m
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
6:03
6:03
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:14
7:13
7:13
7:12
7:12
7:12
7:10
 mm
2
1
Temp °C
27
25
26
27
25
26
27
25
27
28
26
26
26
26
27
28
25
27
27
25
Feels °C
23
23
24
24
23
24
25
24
28
28
27
28
29
29
28
28
23
23
23
23
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  • 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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