Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 7 am 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
27.3° C
0.7° 

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 10 Aug 2026:

  • Most powerful swell: Monday 17 Aug, 2AM (local time) - 7.5ft (2.3m), 11s period, ENE swell with 1,146 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 2.3m 11s and forecast to arrive on Monday (Aug 17) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 12s period and expected on Thursday (Aug 13) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Mon 17th Aug)7.5ft (2.3m) 11s

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


The Lowdown

G’day, Rusty here. Let’s be straight with you—this is a grim outlook for Duds Reef. For 16 days, the surf is either poor or marginal, with hardly a session worth paddling out for. The water temperature is sitting at 81°F, which is about normal for this time of year—no drama there, but it’s small comfort.

The first real sniff of a wave comes Monday 10 August, but it’s not worth your time. You’ve got a tiny 2ft swell from the SSW, period at 15 seconds—that’s a long period groundswell, which can mean nice shape at a reef, but the energy is weak (389) and the wind is a moderate cross-shore at 16 mph. Surf reports call it poor surf conditions, and I’d agree—don’t bother.

Tuesday 11 August is more of the same: 2ft swell, 14-second period, still that ENE cross-wind at 16 mph. Energy nudges up to 406, but it’s still poor. The lumpy cross-chop will ruin anything that tries to form.

Wednesday 12 August sees a bump up to 3ft from the S, period jumping to 18 seconds—that’s a very long period groundswell. Energy hits moderate territory (1022), but the cross-wind at 16 mph and the marginal surf forecast mean it’s just messy. The long period might offer some better shaped waves at this reef, but with that wind, you’ll be fighting a cross-chop all day.

Thursday 13 August morning offers the best of a bad run: 5ft from the S, 16-second period, strong wave energy (1125). But wind is a fresh 19 mph cross-shore, creating a lumpy cross-chop. Still only marginal surf. Afternoon gets worse—wind jumps to 22 mph and conditions drop back to poor.

Friday 14 August is poor surf across the board, with 4ft and fresh cross-winds.

Now, Saturday 15 August is the standout—if you can call it that. Morning brings 7ft from the E, period at 10 seconds, with cross-offshore wind from the NE at 22 mph. That’s a clean session, but the swell size is getting up there—over 7ft, so it’s pushing into expert territory. Energy is strong (1246). Afternoon sees 8ft from the E, period 12 seconds, wind still cross-off at 19 mph. There’s a risk of thunderstorms, but the surf is clean. The swell direction is from the east, which is not the optimum SSE direction for this break, so it might not line up perfectly. Still, this is the best on offer in the whole 16 days—marginal but clean and pumping.

Sunday 16 August is a write-off: 12ft to 18ft from the ENE, but the wind is onshore from the SSE, blowing strong at 25 mph. That swell is too big for anyone but hardcore experts, and with onshore wind, it’ll be a washing machine.

From Monday 17 August right through to Tuesday 25 August, it’s back to small, poor surf—1ft to 4ft, cross-winds, and lumpy conditions. The only thing worth noting is Tuesday 25 August afternoon shows a brief bump to 4ft from the S with 18-second period and moderate energy (1509), but again, cross-wind and lumpy.

Bottom line: there’s a big gap of no good surf from Monday 10 to Friday 14, then a marginal but clean window on Saturday 15 August. After that, another long stretch of poor conditions until the end of the period. If you’re a kite surfer, those strong cross-winds and smaller days might suit you, but for paddle surfing, Duds Reef is struggling.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Heavy rain (total 44mm), heaviest during Sat night. Warm (max 28°C on Thu morning, min 25°C on Thu night). Winds increasing (moderate winds from the NE on Thu morning, strong winds from the N by Sat night).

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
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
2
1
1
1
0
0
0
0
0
1
1
0
1
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)
0.6
SSW
15
0.7
SSW
15
0.7
SSW
15
0.7
SSW
14
0.9
SSW
14
0.7
S
20
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
1.8
E
8
1.7
E
8
1.8
E
10
1.9
E
10
1.9
E
10
1.9
E
10
2.3
ENE
11
Wave Graph
Metric surfscale
Energy kJ
184
234
243
218
356
373
627
741
1029
858
763
636
503
496
378
415
602
646
755
800
1146
Wind (km/h)
25
ENE
25
ENE
20
NE
25
E
25
ENE
20
NE
25
ENE
30
ENE
25
ENE
30
ENE
35
ENE
30
ENE
30
ENE
35
ENE
30
NE
35
NE
35
NNE
45
NNW
65
SSE
40
SSE
25
SSE
Wind State
cross
cross
cross-off
cross
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
off
on
on
on
High Tide
2:43PM0.83m
2:33AM0.31m
3:23PM0.83m
3:22AM0.36m
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
Low Tide
9:56PM0.13m
8:02AM0.01m
10:23PM0.11m
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
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
heavy rain
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:09
6:09
6:09
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:05
7:04
7:02
7:02
7:01
7:00
 mm
44
6
18
2
Temp °C
27
28
26
27
27
26
27
27
25
28
28
25
27
27
25
27
28
26
26
26
26
Feels °C
26
27
26
26
25
26
26
25
24
26
26
24
24
24
23
25
26
25
28
22
25
  • Map Icons:
  • Break
  • 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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