Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 1 pm 23 Jul 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
26.5° C
0.2° 

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 24 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 5AM (local time) - 6.5ft (2.0m), 11s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 28 Jul, 2AM (local time) - 6.5ft (2.0m), 12s period, ENE swell with 1,256 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 28 Jul, 5AM (local time) - 5ft (1.5m), 13s period with E 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 Tuesday (Jul 28) at 5AM. The primary swell is predicted to be 1.5m and 13s 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 2.0m 12s and forecast to arrive on Tuesday (Jul 28) 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 1.3m 7s period and expected on Tuesday (Jul 28) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 28th Jul)5ft (1.5m) 13s
Best Surf 5AM (Wed 29th Jul)6.5ft (2.0m) 11s
Most Powerful 2AM (Tue 28th Jul)6.5ft (2.0m) 12s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s cookin’ at Duds Reef.

To be straight with you, the next 16 days are a real mixed bag and, honestly, mostly a bit of a struggle. There’s a big gap of poor to marginal conditions right through the end of July and into the start of August. The first real glimmer of hope is a brief window on the 29th of July, but after that, we’re back into a 5-6 day stretch of messy, cross-shore winds that’ll leave you shaking your head. It’s only towards the very end of the run, on the 6th of August, that we get a true standout.

The water temp is sitting at 80°F, which is about 0.4°F above normal, so nothing to write home about there – just your standard warm tropical bath.

Let’s break it down. The first decent pulse comes Tuesday the 28th of July afternoon. The swell picks up to 5ft from the ENE, but with a pretty short period of 13 seconds and a moderate cross-offshore breeze. It’s a step up from the slop, and the energy is moderate (1068), but it’s a marginal call. The real highlight of the early part is Wednesday the 29th of July morning. The wind goes light and cross-offshore, cleaning up a solid 7ft ENE groundswell. The period is 11 seconds, and the combined energy is a solid 1277. This is the best on offer for the first week, but at 7ft, it’s pushing into expert territory – the waves will have some punch. This is a spot for the experienced crew only.

After that, it’s a long, bleak run. The wind swings back to a stiff cross-shore, and the swell drops in size or gets chopped up by a strong breeze. The energy values drop back into the 500-800 range, which is weak to moderate. You’ll be fighting the wind more than riding the wave. Honestly, this stretch looks more interesting for the kite surfers than the paddle crew.

Then, we get to the real standout. Mark your calendars for Thursday the 6th of August. On the afternoon session, the stars align. The wind goes glassy – absolutely dead – from the SE at 3 mph. The swell is a clean 5ft from the ENE with a 10-second period. The combined energy is moderate (830), but the conditions are described as "very good." The glassy surface will make Duds Reef look like a mirror. This is the one to circle. The morning of the 7th of August is a sunset follow-up, with a 3ft ENE swell, but it’s a bit smaller and the wind is light onshore, so it won’t be as clean.

So, to sum it up: the 29th of July morning is your big-wave expert window, but the absolute best, most accessible surf on offer is the glassy afternoon of the 6th of August. Everything else is either a fight with the wind or too small to get excited about.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sat night. Warm (max 27°C on Thu afternoon, min 24°C on Thu night). Mainly strong winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 28°C on Tue afternoon, min 23°C on Mon night). Mainly fresh winds.

Thu
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
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
0
1
0
1
1
1
1
0
2
0
0
3
1
3
3
4
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
20
1
SSW
18
0.7
SSW
18
0.9
SSW
17
0.8
SSW
16
0.8
SSW
19
1
SSW
18
1
SSW
18
1
SSW
16
0.9
SSW
16
0.9
SSW
16
1
E
14
1.1
E
13
2
ENE
12
1.4
ENE
12
1.6
ENE
13
1.9
ENE
12
2.1
ENE
11
1.7
E
10
0.8
S
14
Wave Graph
Metric surfscale
Energy kJ
507
616
329
428
298
502
692
662
568
452
416
357
407
1256
598
860
1029
997
550
246
Wind (km/h)
35
ENE
25
ENE
35
ENE
35
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
20
NE
25
ENE
30
ENE
20
NE
20
ENE
25
NNE
20
NNE
15
NNE
10
S
20
ESE
Wind State
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross-off
cross-on
cross-on
High Tide
10:43PM0.26m
1:30PM0.66m
00:28AM0.25m
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
Low Tide
9:32PM0.26m
5:13AM0.11m
9:33PM0.22m
6:08AM0.10m
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
clear
clear
clear
clear
clear
clear
clear
rain showers
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:03
6:03
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:14
7:14
7:14
7:13
7:13
7:12
7:12
 mm
1
1
7
Temp °C
27
25
26
26
25
26
27
24
26
27
25
27
27
25
26
28
26
26
27
26
Feels °C
22
23
23
22
23
23
24
23
24
25
23
25
25
23
26
27
27
29
32
28
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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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