Surf Forecasts:
Duds Reef surf forecast from 28 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 5AM (local time) - 6ft (1.9m), 13s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 2PM (local time) - 7ft (2.1m), 13s period, E swell with 1,514 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 5AM (local time) - 6ft (1.9m), 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 1.9m 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 2.1m 13s and forecast to arrive on Tuesday (Jul 28) at 2PM. 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 Tuesday (Jul 28) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 28th Jul) | 6ft (1.9m) 13s |
| Best Surf | 5AM (Tue 28th Jul) | 6ft (1.9m) 13s |
| Most Powerful | 2PM (Tue 28th Jul) | 7ft (2.1m) 13s |
Table - best surf conditions forecast for Duds Reef over the next 16 days.
The Lowdown
Alright, Rusty here, let's talk about what's on the menu for the next couple of weeks.
We're looking at a pretty bleak stretch ahead, to be honest. The only spot that's even on the radar is Duds Reef, and the name isn't being kind. For most of the next 16 days, the wind is just a constant, ugly cross-shore mess, and the wave quality is more of a headache than a thrill. We're looking at a solid week of poor conditions starting from the end of July, with a few small windows of something that might be surfable, but it's a real grind.
The pick of a very poor bunch is the session on Thursday, August 6th. The morning is still a write-off, but by the afternoon, the wind eases off to a gentle 9 mph cross-offshore breeze from the NE, and the conditions clean up. The swell is a modest 6 ft from the east, with a period of 7 seconds, which is a bit short and crumbly, so it won't be holding up like a proper groundswell. The combined wave energy is a moderate 380, so it's not a powerhouse. The water temp is about average for the time of year, so no surprises there. It's not a standout for size or power, but with the wind finally cooperating, it's the only time in the whole window you'll get a clean wave. So if you're desperate, that's your window.
Before that, you've got a rough patch. From Tuesday, July 28th right through until the morning of August 6th, it's a graveyard of cross-shore winds and poor surf. The winds are howling from the ENE, mostly in the 15 to 28 mph range, just tearing the ocean up. The swell is there, sometimes hitting 8 ft, but with that wind, it's just a messy, lumpy, choppy mess. The period on the early part of the window is a decent 13 seconds, but it's killed by the wind. The Duds Reef is exposed, and a cross-shore wind from the ENE is a bad look for this spot. It's a real shame.
So, to sum it up: If you're a surfer, the only real hope is that Thursday afternoon session on August 6th. The rest of the run is a bust. It's one of those spells where the ocean just doesn't want to play ball. Keep an eye on the charts, though—it tends not to stay this poor for long.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 29°C on Tue afternoon, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 24°C on Sat night). Winds increasing (light winds from the ENE on Thu night, strong winds from the ENE by Sat morning). | ||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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) | ENE 13 | E 13 | E 13 | ENE 12 | ENE 10 | ENE 9 | SSW 14 | ENE 8 | SSW 18 | SW 16 | SW 16 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 1327 | 1397 | 1491 | 1170 | 512 | 280 | 254 | 287 | 232 | 268 | 261 | 320 | 491 | 669 | 572 | 443 | 500 | 403 | 343 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 2:51AM0.29m | 3:48PM0.75m | 3:28AM0.31m | 4:17PM0.75m | 4:07AM0.34m | 4:44PM0.73m | 4:49AM0.37m | 5:10PM0.70m | 5:33AM0.41m | 5:35PM0.65m | 6:22AM0.44m | 5:59PM0.58m | |||||||
Low Tide | 10:32PM0.17m | 8:21AM0.04m | 10:55PM0.16m | 8:58AM0.05m | 11:17PM0.15m | 9:35AM0.07m | 11:39PM0.13m | 10:13AM0.10m | 00:01AM0.12m | 10:55AM0.16m | 00:23AM0.11m | 11:42AM0.22m | 00:48AM0.10m | ||||||
 |  | | |  |  |  | | |  | | | | | | | | | | |
 | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | 7:13 | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — |
mm | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 28 | 29 | 26 | 28 | 27 | 26 | 28 | 28 | 26 | 27 | 27 | 25 | 26 | 26 | 25 | 26 | 27 | 25 |
Feels °C | 24 | 29 | 29 | 27 | 30 | 29 | 30 | 28 | 26 | 26 | 23 | 23 | 23 | 20 | 20 | 22 | 22 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | E 13 | E 13 | ENE 12 | ENE 10 | ENE 9 | ENE 8 | E 8 | E 8 | S 13 | S 12 | SW 15 | SW 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 |
| kJ | 213 | 1397 | 1491 | 1170 | 512 | 280 | 154 | 186 | 146 | 163 | 151 | 236 | 220 | 202 | 194 | 196 | 195 | 146 | 90 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | S 14 | SSW 14 | S 14 | SSW 13 | SW 16 | SW 16 | E 16 | E 15 | SW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SW 13 |
| kJ | 11 | 189 | 189 | 254 | 213 | 257 | 254 | 232 | 232 | 268 | 261 | 231 | 205 | 191 | 123 | 131 | 131 | 116 | 43 |
Swell 3 Height (m) Direction Period (s) | NNE 10 | S 10 | — | SW 21 | NNW 5 | SW 19 | SW 19 | SSW 18 | SSW 18 | SSE 6 | E 15 | S 12 | S 12 | SSW 12 | S 11 | S 11 | SSE 8 | SSE 8 | SSW 13 |
| kJ | 10 | 8 | — | 18 | 3 | 59 | 95 | 209 | 207 | 14 | 159 | 106 | 71 | 45 | 39 | 22 | 7 | 6 | 34 |
Wind waves Height (m) Direction Period (s) | ENE 13 | NNE 8 | NNE 7 | — | — | — | — | ENE 8 | — | E 8 | E 8 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 1327 | 14 | 124 | — | — | — | — | 287 | — | 168 | 223 | 320 | 491 | 669 | 572 | 443 | 500 | 403 | 343 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 12 | 10 | 12 | 0 | 1 | 27 | 13 | 12 | 12 | 12 | 22 | 145 | 144 | 165 | 144 | 24 | 146 | 22 | 16 |
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.
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