Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 7 am 19 Jul 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
26.6° C
0.3° 

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 19 Jul 2026:

  • Most powerful swell: Sunday 26 Jul, 11AM (local time) - 4ft (1.2m), 16s period, E swell with 723 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 1.2m 16s and forecast to arrive on Sunday (Jul 26) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Sun 26th Jul)4ft (1.2m) 16s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what’s on the menu for the next couple of weeks.

Honestly, it’s a bit of a rough stretch for Duds Reef. We’ve got a solid run of persistent cross-shore winds from the ENE that are just going to keep things lumpy and messy for the first week and a half. The water’s sitting at a warm 80°, which is about average for this time of year, so that’s one thing you can’t complain about.

The first real flicker of hope doesn’t show up until Thursday, July 30th. That afternoon, the wind finally drops right out, going glassy with a light SSW breeze at just 3 mph. The swell is a small 2 ft from the SW, but with a very long period of 18 seconds, that’s a proper groundswell. The combined energy is moderate (554). This is the standout of the whole forecast – clean, glassy conditions on a reef that likes a bit of SW direction. It’s not big, but it’ll be the best looking surf of the window. The morning of that day also sees a light onshore from the S at 6 mph, with a 2 ft SW swell, but it’s the afternoon glass-off that’s the real deal. Crowds are sometimes an issue here, so for that afternoon session, you might have some company.

Before that, the best we can say is Tuesday, July 29th, has a moderate breeze and a 4 ft swell from the ENE, but it’s still cross-shore and the forecast is poor. The week before that is a write-off with fresh cross-shore winds and weak, choppy surf.

Looking further ahead, the first week of August doesn’t offer much change. The wind stays up from the ENE, and the swell is a mix of small SSW and E pulses, but the lumpy cross-shore chop kills any quality. Nothing to get excited about there.

So, to sum it up: the one true standout is that Thursday, July 30th afternoon glass-off at Duds Reef. It’s a small, clean, long-period groundswell. Everything else is a battle with the wind. For beginners, the swell never gets over 5 ft, so it’s fine size-wise, but the messy conditions will make it tough. The whole first week is a gap of no real recommendations. It’s a bit of a waiting game.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

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

Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
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
0
1
0
2
1
0
0
0
0
0
0
0
1
1
0
1
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
E
8
1.2
E
8
1.2
E
8
0.6
S
16
0.9
S
16
0.9
S
15
0.9
S
14
0.9
S
14
0.9
S
13
0.6
SSW
24
0.6
SSW
23
0.7
SSW
22
0.9
SSW
20
0.7
SSW
20
1
SSW
18
2.2
E
7
0.9
SSW
17
1.8
E
8
0.8
SSW
19
1
SSW
18
1
SSW
18
Wave Graph
Metric surfscale
Energy kJ
187
190
169
193
407
343
329
311
277
437
426
480
561
395
616
508
428
362
502
685
662
Wind (km/h)
30
ENE
30
ENE
20
ENE
20
ENE
30
ENE
15
NE
25
ENE
30
ENE
25
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
25
ENE
35
ENE
35
ENE
30
ENE
25
ENE
35
ENE
20
ENE
Wind State
cross
cross
cross
cross
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
8:16AM0.46m
7:10PM0.51m
9:31AM0.50m
7:31PM0.43m
10:46AM0.54m
7:33PM0.36m
11:52AM0.59m
12:45PM0.63m
10:43PM0.26m
1:30PM0.66m
00:28AM0.25m
2:09PM0.70m
1:28AM0.26m
Low Tide
1:23PM0.30m
2:15AM0.11m
3:02PM0.36m
2:48AM0.12m
6:02PM0.36m
3:27AM0.12m
4:16AM0.12m
9:32PM0.26m
5:13AM0.11m
9:33PM0.22m
6:08AM0.10m
9:50PM0.20m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:00
6:00
6:01
6:01
6:01
6:01
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:15
7:14
7:14
7:14
 mm
Temp °C
26
27
25
26
27
25
27
27
25
26
27
25
26
26
25
26
27
25
26
27
25
Feels °C
23
24
24
26
25
25
26
25
24
23
24
23
23
22
22
22
24
22
24
25
23
  • 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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