Duds Reef Surf Break

Lat Long: 21.31° N 158.01° W

Duds Reef Surf Forecast and Surf Report

Issued: 1 am 10 Jul 2026 (local time)

Forecast update in  hr  min

Today's Duds Reef sea temperature is
26.3° 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 10 Jul 2026:

  • Best quality surf: Wednesday 15 Jul, 5AM (local time) - 2.5ft (0.7m), 17s period, SW swell with cross-offshore winds.
  • Most powerful swell: Saturday 11 Jul, 11PM (local time) - 3ft (0.9m), 18s period, SW swell with 444 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 15 Jul, 5AM (local time) - 2.5ft (0.7m), 17s period with SW 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 Wednesday (Jul 15) at 5AM. The primary swell is predicted to be 0.7m and 17s period with a secondary swell of 1.1m and 7s. 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 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 1.1m 7s period and expected on Wednesday (Jul 15) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 15th Jul)2.5ft (0.7m) 17s
Best Surf 5AM (Wed 15th Jul)2.5ft (0.7m) 17s
Most Powerful11PM (Sat 11th Jul)3ft (0.9m) 18s

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


Alright, Rusty here, looking at what we've got.

Duds Reef is a reef break that breaks fairly consistently, but the forecast is a long, bleak run. The combined swell energy is moderate, sitting between 363 and 716 for the first week, but every session has poor surf conditions. The wind is cross-shore and fresh to strong, leaving a lumpy, messy chop. Water temp is 26°, which is about normal for the time of year. The swell is mostly short-period stuff, with a few longer pulses that just don't deliver clean waves.

From Friday the 10th all the way to Wednesday the 23rd, it's a complete blank. Every session is marked as poor. The wind never lets up, the sea is always choppy. That's almost two weeks with nothing worth a paddle.

Finally, on Thursday the 23rd, there's a flicker. It's still only marginal, but the combined energy picks up to 553 in the morning and 599 in the afternoon, with a long 20-second period swell coming from the SSW. The wind is a moderate cross-shore, so not perfect. Then Friday the 24th is the real hope. The wind turns cross-offshore, the swell direction is right for Duds Reef from the SSW, and with a 1.0m swell and an 18-second period, the surface should be clean. The combined energy is at 833, which is solid moderate. The forecast still calls it marginal, so it's not a lock, but it's the best on offer.

You can sometimes see a crowd here, so expect some company. This is one for intermediate surfers; the swell stays under 1.5m, so it's not too big.

Come Saturday the 25th, you get a 1.1m SSW swell, but the wind swings back to a messy cross-shore and the quality drops to poor again.

So, the standout is clear: Friday the 24th of July, afternoon session at Duds Reef. That’s the one. The rest of the window is a write-off.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

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

Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
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
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
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)
1.6
ENE
7
1.5
ENE
7
0.6
SSW
19
1.6
E
7
0.7
SW
18
0.9
SW
17
0.9
SW
16
0.9
SW
16
0.9
SW
16
0.9
SW
15
0.9
SW
15
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.7
SSW
17
0.6
SSW
18
0.6
SSW
18
0.8
SSW
16
0.6
SSW
16
0.7
SSW
17
0.7
SW
14
Wave Graph
Metric surfscale
Energy kJ
259
215
269
272
316
439
376
367
353
333
309
261
239
232
261
207
211
314
173
258
214
Wind (km/h)
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
40
ENE
35
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
20
ENE
25
ENE
25
E
25
ENE
30
E
35
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
1:24PM0.75m
00:12AM0.26m
2:13PM0.82m
1:27AM0.25m
2:59PM0.86m
2:28AM0.26m
3:43PM0.88m
3:23AM0.28m
4:25PM0.87m
4:16AM0.31m
5:04PM0.83m
5:11AM0.34m
5:41PM0.77m
Low Tide
9:08PM0.22m
6:14AM0.01m
9:50PM0.18m
7:09AM-0.02m
10:28PM0.15m
8:02AM-0.03m
11:04PM0.13m
8:53AM-0.02m
11:38PM0.11m
9:42AM0.01m
00:12AM0.11m
10:31AM0.06m
00:44AM0.11m
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
5:56
5:58
5:58
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:16
7:16
7:16
7:16
7:16
7:16
7:15
 mm
Temp °C
25
26
25
26
27
25
25
26
24
25
26
24
26
26
24
26
26
25
26
26
25
Feels °C
23
23
24
24
25
23
23
23
22
22
23
22
24
23
23
25
23
24
24
23
23
  • 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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