Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 7 am 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
27.3° 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 12 Aug 2026:

  • Most powerful swell: Sunday 16 Aug, 8AM (local time) - 15ft (4.5m), 10s period, E swell with 4,314 kJ wave energy.

Best Forecast Surf Conditions for Duds Reef this week:

The most powerful waves expected at Duds Reef in the next 16 days are 4.5m 10s and forecast to arrive on Sunday (Aug 16) 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 12s period and expected on Sunday (Aug 16) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Sun 16th Aug)15ft (4.5m) 10s

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


The Lowdown

G'day, Rusty here, and I've gotta be straight with you – this 16-day window is a total write-off for Duds Reef. It's a proper reef set-up that's fairly consistent and exposed to the swell, but the conditions just aren't playing ball.

Let's start with the water temp – it's sitting at 81°, which is about normal for this time of year, so no surprises there.

The only half-decent window is right at the start, on Wednesday August 12th. We've got a 3ft to 4ft S swell rolling in with a very long 18-second period – that's proper groundswell, loads of energy (1029 to 1154 combined energy). But the wind is a solid 16 to 19 mph from the ENE, cross-shore, creating a lumpy cross-chop that's gonna mess up the face. The morning's a bit better, but it's still only marginal. Honestly, it's not worth paddling out for.

Then it goes downhill fast. Thursday August 13th through Sunday August 16th sees the swell jump up – 8ft to 12ft of E windswell with a short 10-11 second period, and the wind gets nasty, hitting 25 to 34 mph. That's strong energy (1689 to 2590 combined), but it's a cross-shore mess with a heavy chop. By Sunday August 16th, we're talking near-gale cross-shore winds and crossing waves. This setup looks more interesting for kite surfing than paddle surfing, to be honest.

After that, the swell drops back to 2ft to 5ft, but the wind doesn't let up – it's a moderate to fresh breeze out of the ENE, keeping that cross-chop alive. The wave energy is weak to moderate (330 to 1048 combined), and the period is all over the place, from 7 seconds to 18 seconds. The long-period S and SSW groundswells that pop up around August 21st to 24th are prone to breaking too straight on this reef, and the wind's never clean enough to make it worthwhile.

The only glimmer of hope is on Saturday August 22nd afternoon. The swell is tiny at 2ft from the SW, with a 15-second period, but the wind goes glassy – 3 mph from the ENE, calm as. That's the only time in the whole 16 days where it's clean, but with such small waves, you're just bobbing around. The combined energy is only 408, so it's weak.

The rest of the run is a dead zone. From August 23rd onwards, it's all poor or marginal conditions with moderate cross-shore wind and chop. There's nothing to get excited about.

So, to sum it up: there's a solid 16-day gap with no decent surf. Duds Reef is a consistent spot, so it tends not to stay poor for long, and forecasts can change. But for now, I'd take a break and wait for the next window.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Wed afternoon, min 25°C on Wed night). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 33mm), heaviest during Sun morning. Warm (max 28°C on Sat afternoon, min 24°C on Sun morning). Winds decreasing (gales from the ENE on Sun morning, light winds from the E by Mon morning).

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
3
0
0
0
0
0
1
0
0
0
0
0
0
1
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
S
18
1.1
S
18
1.4
S
16
1.3
S
16
1.3
S
15
1.2
S
15
1.1
S
14
1.1
S
14
1.9
ENE
8
2.5
E
10
3
E
10
3
E
10
4
E
10
3
E
9
1.7
E
9
1
S
14
0.9
S
14
0.8
S
13
1.3
E
7
1.2
E
7
0.6
S
13
Wave Graph
Metric surfscale
Energy kJ
627
741
1029
858
763
636
496
496
450
1146
1734
1655
3060
1397
432
412
329
222
168
138
117
Wind (km/h)
30
ENE
30
ENE
20
NE
30
ENE
35
ENE
30
ENE
35
ENE
35
ENE
35
NE
40
ENE
45
ENE
45
NE
50
ENE
30
ESE
20
E
15
E
30
ENE
25
ENE
30
ENE
25
ENE
20
ENE
Wind State
cross
cross
cross-off
cross
cross
cross
cross
cross
cross-off
cross
cross
cross-off
cross
cross-on
cross-on
cross
cross
cross
cross
cross
cross
High Tide
3:59PM0.80m
4:08AM0.41m
4:32PM0.75m
4:55AM0.46m
5:02PM0.68m
5:41AM0.50m
5:29PM0.60m
6:30AM0.53m
5:53PM0.51m
7:23AM0.54m
6:10PM0.44m
8:25AM0.55m
6:13PM0.37m
Low Tide
8:53AM0.02m
10:50PM0.10m
9:42AM0.06m
11:15PM0.09m
10:30AM0.11m
11:40PM0.09m
11:19AM0.18m
00:04AM0.09m
12:13PM0.25m
00:28AM0.10m
1:18PM0.31m
00:54AM0.11m
2:59PM0.34m
1:23AM0.13m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
heavy rain
thunderstorm
thunderstorm
clear
rain showers
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:09
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:02
7:02
7:01
7:00
7:00
7:00
 mm
1
19
6
6
1
Temp °C
27
28
25
28
28
25
27
28
26
27
28
26
25
27
27
28
27
25
26
27
25
Feels °C
25
26
24
25
25
23
24
25
24
24
25
23
21
26
26
30
26
24
24
25
25
  • 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
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Duds Reef:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Duds Reef surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest