Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 7 pm 24 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 25 Jul 2026:

  • Best quality surf: Tuesday 28 Jul, 5AM (local time) - 6ft (1.8m), 13s period, E swell with cross-offshore winds.
  • Most powerful swell: Tuesday 28 Jul, 11PM (local time) - 8ft (2.5m), 13s period, E swell with 2,328 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 28 Jul, 5AM (local time) - 6ft (1.8m), 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 1.8m 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 2.5m 13s and forecast to arrive on Tuesday (Jul 28) at 11PM. 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 Monday (Jul 27) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 28th Jul)6ft (1.8m) 13s
Best Surf 5AM (Tue 28th Jul)6ft (1.8m) 13s
Most Powerful11PM (Tue 28th Jul)8ft (2.5m) 13s

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


The Lowdown

Alright, this is Rusty, and I’ve been staring at the charts for Duds Reef. Let’s be straight with you—it’s looking pretty grim out there for the foreseeable future. Normally, I’d be buzzing to talk about a spot, but this one’s a tough sell.

The overall pattern is dominated by a persistent cross-shore wind that just won't give the reef a break. The first few days are a write-off. Friday afternoon, July 24th, is a total no-go with a 35 km/h cross-shore wind and lumpy, poor conditions. The swell is there, about 3ft from the SSW, but it’s completely ruined. The water temp is sitting at 80°, which is about average for the time of year, so you can't even blame the cold for keeping you out.

Saturday and Sunday keep the same story: 3ft to 3ft of SSW swell, but the wind is relentless. Moderate to fresh breeze, cross-shore chop, and the wave comment just says "marginal" or "poor." This is not the time to paddle out.

The first real glimmer of hope—and I use that word carefully—comes on Tuesday, July 28th. The wind shifts to a cross-offshore from the NE, and the swell ticks up to 6ft in the morning, then 7ft in the afternoon, from the East. The consistency is only “fairly consistent,” and the energy is moderate (1327 in the morning, 1838 in the afternoon). The conditions are described as “clean” for the first time, but the score is still marginal. It’s a maybe, but not a standout.

The one true standout in this whole 16-day window is Wednesday morning, July 29th. This is the one to aim for. The wind is completely glassy (5 km/h from the SSW), and the swell is a solid 6ft from the ENE with a period of 11 seconds—that’s proper groundswell. The energy is moderate (1075). The wave comment says “excellent surf conditions for experienced surfers.” That 6ft is getting into the territory where it might be too big for beginners, but for the crew that knows Duds Reef, this is the window. The only downside? It’s a reef break, and with that long period, it can be a bit more critical. The crowds are listed as “sometimes,” so you might have a few others who saw the same glassy forecast.

After that, we slide back into the doldrums. Thursday afternoon, July 30th, offers a small 3ft south swell with a cross-offshore breeze, and the wave comment says “expect very good surf conditions,” but it’s tiny. Everything from the end of July through the first week of August is a mess of strong cross-shore winds, rising swell heights (7ft to 7ft), but with short, weak periods (8 seconds) and messy chop. The energy is weak to moderate (184 to 831). It’s basically a kite-surfing setup, not a paddle-surfing one.

The second week, from August 4th onward, is a waste of time. The swell is there, but the wind is never right. Strong cross-shore, lumpy, and poor. The long-range stuff is too uncertain to get excited about.

So, the play is simple: If you want waves, hold out for Wednesday morning, July 29th. That’s your best shot. The rest of the 16 days is a long gap of poor to marginal conditions. It’s a rare good window in a very flat outlook.

- Rusty

Short Range Forecast

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

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Wed night. Warm (max 28°C on Tue afternoon, min 25°C on Mon night). Winds increasing (light winds from the NW on Tue night, fresh winds from the ENE by Thu afternoon).

Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
1
2
1
1
2
1
2
3
3
2
4
1
0
1
0
0
2
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
16
0.8
SSW
19
1
SSW
18
1
SSW
18
1
SSW
16
0.9
SSW
16
1.1
E
15
1.2
E
14
1.3
E
13
1.8
E
13
1.9
E
13
2.2
E
13
2.5
ENE
12
2.2
ENE
11
1.6
ENE
10
1.4
ENE
9
1.5
E
8
0.6
SSW
18
1.5
E
8
Wave Graph
Metric surfscale
Energy kJ
298
502
692
662
568
452
506
561
595
1138
1247
1684
2112
1121
445
304
301
222
256
Wind (km/h)
30
ENE
30
ENE
35
ENE
25
NE
30
ENE
30
ENE
25
ENE
25
ENE
30
NE
15
NE
20
NE
25
NE
5
NW
15
S
15
S
15
SE
20
ESE
35
ENE
15
ENE
Wind State
cross
cross
cross
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
off
on
on
cross-on
cross-on
cross
cross
High Tide
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
4:44PM0.73m
4:49AM0.37m
Low Tide
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
9:35AM0.07m
11:39PM0.13m
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
cloud
part cloud
thunderstorm
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:03
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
7:13
7:13
7:12
7:12
7:12
 mm
2
Temp °C
25
26
27
25
26
27
25
27
28
25
27
28
26
26
27
27
27
27
26
Feels °C
23
23
24
23
23
24
23
25
26
24
28
28
26
30
29
29
27
26
25
  • Map Icons:
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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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