
Surf Forecasts:
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 Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (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 ForecastMostly dry. Warm (max 27°C on Sun afternoon, min 24°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly 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 | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 8 | E 8 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | E 7 | SSW 17 | E 8 | SSW 19 | SSW 18 | SSW 18 |
Wave Graph | |||||||||||||||||||||
187 | 190 | 169 | 193 | 407 | 343 | 329 | 311 | 277 | 437 | 426 | 480 | 561 | 395 | 616 | 508 | 428 | 362 | 502 | 685 | 662 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | |||||||||
6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 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 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | S 13 | SSW 11 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 | S 13 | S 10 | S 13 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | SSW 18 |
129 | 126 | 71 | 193 | 407 | 343 | 329 | 311 | 277 | 128 | 106 | 209 | 561 | 395 | 616 | 329 | 428 | 298 | 502 | 685 | 662 | |
Swell 2 Height (m) Direction Period (s) | S 19 | S 18 | S 18 | S 13 | SW 18 | SW 16 | SW 17 | SSW 16 | E 13 | E 12 | SSW 23 | SSW 22 | S 12 | S 11 | S 11 | S 12 | S 12 | S 20 | SSW 16 | S 11 | E 16 |
66 | 107 | 152 | 121 | 80 | 132 | 73 | 103 | 84 | 102 | 426 | 480 | 137 | 90 | 83 | 143 | 100 | 296 | 288 | 85 | 427 | |
Swell 3 Height (m) Direction Period (s) | WNW 12 | WNW 12 | SW 19 | SW 18 | W 12 | W 11 | E 12 | E 11 | SW 15 | SSW 24 | E 11 | E 12 | SSW 16 | SSW 16 | S 13 | SW 16 | S 21 | S 12 | S 11 | E 16 | S 9 |
28 | 28 | 92 | 83 | 11 | 9 | 25 | 23 | 60 | 437 | 90 | 103 | 100 | 173 | 85 | 118 | 231 | 100 | 89 | 125 | 58 | |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | ENE 8 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 7 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | ENE 7 | E 8 | ENE 8 |
187 | 190 | 169 | 143 | 199 | 139 | 111 | 113 | 134 | 77 | 114 | 166 | 331 | 306 | 274 | 508 | 387 | 362 | 337 | 300 | 253 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 146 | 12 | 10 | 12 | 12 | 12 | 14 | 12 | 12 | 32 | 12 | 24 | 21 | 12 | 21 | 27 | 13 | 12 | 144 | 12 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.










