Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Issued: 7 pm 06 Jul 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
26.6° C

Slightly warmer than usual

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 7 Jul 2026:

  • Most powerful swell: Saturday 11 Jul, 11PM (local time) - 3ft (0.9m), 18s period, SW swell with 444 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 0.9m 18s and forecast to arrive on Saturday (Jul 11) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 15s period and expected on Monday (Jul 13) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Sat 11th Jul)3ft (0.9m) 18s

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


Updates in  hr  min  s Forecast update imminent

Alright, Rusty here. Let's have a look at what Duds Reef is offering over the next couple of weeks.

Honestly, we're staring down a pretty grim stretch for Duds Reef. This is a reef break that's fairly consistent, and it opens up to swells from the SSE, but for the next 16 days, the winds are just a total killer. From Tuesday, July 7th, all the way through to Tuesday, July 21st, it's a relentless run of cross-shore breezes, mostly from the ENE, with speeds between 16 mph and 25 mph. That's going to keep things lumpy, choppy, and just plain messy. There's really nothing worth paddling out for in that whole first two-week block. The swell energy is moderate, hitting values like 795 (moderate), but it doesn't matter when the wind's ruining the surface.

The wave comment for every single one of those sessions is "poor surf conditions," so that tells you everything. The swell direction is often swinging between E and SSW, but it's never aligning right with the wind to give us anything clean. Expect a blank run of about 13 days with no real surf on offer.

Now, there is a tiny glimmer on the very last day of the window. On Wednesday, July 22nd, we see a slight change. The swell height picks up to 3 ft from the SW with a period of 17 seconds. That is a proper long-period groundswell. The combined energy jumps up to 1022, pushing into the strong range. But here's the catch—the wind is still a fresh 19 mph cross-shore from the ENE. The conditions are described as "marginal" at best, with the same lumpy cross-chop. It's still not good for a paddle session. Given the size is only about 3 ft, it's not a big-wave day, but the long period will make it a bit more powerful on the reef. Anyone who charges it on that day will have to battle the bumpy surface for a few turns.

To sum it up: for the next 16 days, forget the surfboard at Duds Reef. From July 7th to July 21st, it's a total write-off. And that last day on July 22nd is just a tease—still too windy for anything decent. A setup like this, with that constant cross-shore wind and moderate swell, would honestly be more interesting for kite surfing than paddle surfing.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Tue morning, min 24°C on Mon night). Mainly fresh winds.

Days 5-7 Weather Summary

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

Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Mon
13
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SSW
15
1.9
ENE
8
1.6
ENE
8
1.9
E
7
1.7
E
7
1.5
E
7
1.7
E
7
1.5
E
8
1.5
E
8
1.6
E
7
1.5
E
8
1.7
ENE
7
0.6
SSW
19
1.8
E
8
1.6
E
8
0.9
SW
17
0.9
SW
16
0.9
SSW
16
0.9
SSW
16
0.9
SW
15
0.9
SW
14
Wave Graph
Metric surfscale
Energy kJ
376
438
336
397
303
245
315
265
265
285
258
286
259
387
316
439
376
441
425
322
305
Wind (km/h)
30
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
30
ENE
40
ENE
35
ENE
30
ENE
30
ENE
35
ENE
30
ENE
35
ENE
35
ENE
25
ENE
25
ENE
30
ENE
30
ENE
25
ENE
30
ENE
Wind State
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
10:27AM0.50m
8:20PM0.44m
11:34AM0.59m
9:13PM0.36m
12:32PM0.68m
10:39PM0.30m
1:24PM0.75m
00:12AM0.26m
2:13PM0.82m
1:27AM0.25m
2:59PM0.86m
2:28AM0.26m
3:43PM0.88m
Low Tide
3:02AM0.10m
3:59PM0.36m
3:40AM0.08m
6:29PM0.34m
4:26AM0.06m
8:13PM0.28m
5:19AM0.03m
9:08PM0.22m
6:14AM0.01m
9:50PM0.18m
7:09AM-0.02m
10:28PM0.15m
8:02AM-0.03m
clear
part cloud
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:56
5:56
5:56
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:17
7:17
7:17
7:17
7:16
7:16
7:16
7:16
 mm
Temp °C
25
26
26
24
26
26
24
26
26
25
26
27
25
26
26
25
26
27
25
26
27
Feels °C
22
22
22
21
23
22
21
22
23
24
24
25
24
24
24
24
25
25
23
24
25
Swell 1
Height (m)
Direction
Period (s)
0.9
SSW
15
0.9
SSW
14
0.9
SSW
14
0.8
SSW
14
0.8
SSW
14
0.7
SSW
13
0.7
SSW
13
0.6
S
12
0.6
S
12
0.5
S
12
0.5
S
12
0.4
SSW
11
0.6
SSW
19
0.6
SW
18
0.7
SW
18
0.9
SW
17
0.9
SW
16
0.9
SSW
16
0.9
SSW
16
0.9
SW
15
0.9
SW
14
Energy kJ
376
350
336
254
243
187
178
112
110
75
71
41
251
263
316
439
376
441
425
322
305
Swell 2
Height (m)
Direction
Period (s)
0.2
SSE
9
0.2
SSE
8
0.1
SE
10
0.2
SSE
9
0.2
SSE
9
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.3
W
14
0.2
W
13
0.3
W
14
0.4
SW
20
0.5
S
11
0.4
S
12
0.4
S
12
0.4
S
11
0.4
SSE
11
0.4
SSE
12
0.4
SSE
12
0.4
W
16
0.4
W
16
Energy kJ
7
7
4
8
7
7
7
6
33
13
36
107
64
44
44
40
43
47
47
81
77
Swell 3
Height (m)
Direction
Period (s)
0.1
NW
9
0.1
NW
9
0.1
SE
8
0.1
W
17
0.1
S
18
0.2
W
15
0.2
S
16
0.1
SE
8
0.2
S
15
0.2
SSW
21
0.3
S
13
0.4
W
13
0.4
W
14
0.4
W
13
0.4
W
13
0.3
W
12
0.3
W
12
0.4
W
12
0.4
SSE
12
0.3
SSE
11
Energy kJ
3
3
3
6
6
17
21
2
17
45
31
55
63
54
54
27
26
47
46
25
Wind waves
Height (m)
Direction
Period (s)
1.6
E
7
1.9
ENE
8
1.6
ENE
8
1.9
E
7
1.7
E
7
1.5
E
7
1.7
E
7
1.5
E
8
1.5
E
8
1.6
E
7
1.5
E
8
1.7
ENE
7
1.6
ENE
7
1.8
E
8
1.6
E
8
1.5
E
7
1.4
ENE
8
1.6
E
8
1.6
E
8
1.5
E
8
1.5
E
8
Energy kJ
285
438
333
397
303
245
315
265
265
285
258
286
259
387
294
246
232
324
341
295
301
Nearest Offshore or Glassy
Rating
(10 max)
2
1
2
2
2
1
1
1
1
1
1
1
2
2
1
2
2
2
2
2
1
Distance (km)
24
144
165
21
21
28
21
22
22
13
14
144
15
24
144
12
12
14
21
12
144
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
1
1
1
1
1
1
2
2
3
3
3
3
2
Best forecast wave conditions in United States
Rating
(10 max)
4
2
2
4
2
2
4
1
1
4
1
2
3
2
1
3
3
3
3
2
2
Header Global
Rating
(10 max)
5
5
9
8
7
7
7
6
6
6
5
5
5
5
5
6
8
6
5
5
5
  • 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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