Surf Forecasts:
Duds Reef surf forecast from 6 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 2AM (local time) - 4.5ft (1.4m), 16s period, S swell with 1,029 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 1.4m 16s and forecast to arrive on Thursday (Aug 13) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Thursday (Aug 06) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Thu 13th Aug) | 4.5ft (1.4m) 16s |
Table - best surf conditions forecast for Duds Reef over the next 16 days.
The Lowdown
Hang tight, folks. The 16-day window opens with a whole lot of nothing, and that’s the honest truth. The first ten days are basically a total write-off for getting a surfboard wet. We’re looking at a stretch until at least the 18th where the conditions are just plain ugly. That ENE cross-shore wind is a constant buzzkill, and for most of that time the swell is either tiny, short-period junk, or when there is a pulse, the wind is absolutely shredding it apart. It’s going to be lumpy, cross-chop, and just not worth the paddle out.
The highlight of the whole period, and it’s a long-range punt, is the swell showing up on Sunday the 16th. That’s the one to keep an eye on, but even then, it’s not going to be clean. That through Monday the 17th has some serious size, but that ENE wind is still howling at 19 to 25 mph, which is going to make Duds Reef a messy, wind-blown mess. This is full-on kite-surfing territory, not paddle surfing. It’s only on Tuesday the 18th that the wind finally starts to ease back, bringing some actual clean conditions, but by then the swell has dropped off.
The only real bright spot in the whole outlook is the late kick of groundswell and the wind easing a touch on Tuesday the 18th. The swell is still a bit short-period, around 6ft, but that ENE breeze dropping to 12 mph is a godsend compared to the rest of the week. For a break like Duds Reef, that’s a much better deal, and it’s the only day that’s even close to being surfable. But it’s still just a marginal call.
So, here’s the rundown. From now until the 17th, it’s a complete no-go. The 16th and 17th are big but blown out and only for the most experienced chargers at Duds Reef. The best bet for anyone looking to paddle out is the morning of Tuesday the 18th when the swell (6ft from ENE) and the wind (12 mph) finally align into something worth a look. It’s not epic, but it’s the only game in town. After that, the swell fades again, and we’re back to square one.
This is Rusty, signing off. Keep the faith.
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 24°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Mon afternoon, min 25°C on Sun morning). Mainly fresh winds. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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) | ENE 8 | SW 14 | SSW 14 | SW 21 | SW 20 | SSW 14 | SSW 18 | E 7 | SSW 17 | ENE 7 | E 7 | SSW 16 | SSW 15 | ENE 8 | SSW 15 | SSW 14 | SSW 14 | S 20 | S 18 | S 18 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 81 | 102 | 138 | 115 | 99 | 148 | 221 | 154 | 202 | 261 | 251 | 288 | 184 | 234 | 243 | 218 | 356 | 485 | 635 | 741 | 1029 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 11:04AM0.63m | 12:14PM0.69m | 10:37PM0.24m | 1:11PM0.75m | 00:30AM0.24m | 2:00PM0.80m | 1:39AM0.27m | 2:43PM0.83m | 2:33AM0.31m | 3:23PM0.83m | 3:22AM0.36m | 3:59PM0.80m | 4:08AM0.41m | ||||||||
Low Tide | 3:41AM0.08m | 8:48PM0.23m | 9:04PM0.19m | 6:05AM0.04m | 9:29PM0.15m | 7:07AM0.02m | 9:56PM0.13m | 8:02AM0.01m | 10:23PM0.11m | 8:53AM0.02m | 10:50PM0.10m | ||||||||||
 |  |  | | |  | | | | | | | | | | | | | | | | |
 | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 27 | 28 | 25 | 27 | 28 | 25 | 27 | 27 | 26 | 27 | 28 | 26 | 27 | 28 | 26 | 27 | 27 | 26 |
Feels °C | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 26 | 24 | 26 | 26 | 26 | 26 | 27 | 27 | 25 | 26 | 26 | 26 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | E 6 | SSW 14 | SSW 14 | SW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | E 7 | SSW 12 | SSW 16 | E 8 | E 8 | E 7 | SSW 14 | SSW 14 | E 7 | S 18 | S 18 | S 16 |
| kJ | 76 | 34 | 138 | 76 | 91 | 127 | 175 | 120 | 154 | 155 | 85 | 288 | 117 | 114 | 108 | 218 | 356 | 103 | 635 | 741 | 1029 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SW 14 | S 11 | NE 7 | SW 20 | SSW 19 | SSW 18 | SW 18 | SSW 17 | SSW 13 | S 18 | SSW 12 | SSW 15 | SSW 15 | SSW 15 | SSE 9 | SSE 9 | SSW 14 | E 7 | SSW 13 | SE 9 |
| kJ | 81 | 102 | 37 | 14 | 99 | 148 | 221 | 154 | 202 | 96 | 156 | 56 | 184 | 234 | 243 | 45 | 43 | 304 | 74 | 235 | 21 |
Swell 3 Height (m) Direction Period (s) | SSE 11 | ENE 8 | SSE 6 | SW 21 | S 11 | S 11 | S 10 | SSE 10 | SSE 10 | SW 16 | SW 16 | SSE 10 | SSW 12 | SSE 10 | SSE 9 | SSW 11 | S 21 | S 20 | SSW 13 | SE 9 | WNW 12 |
| kJ | 43 | 25 | 3 | 115 | 20 | 21 | 16 | 37 | 19 | 130 | 127 | 37 | 81 | 35 | 32 | 40 | 79 | 485 | 294 | 21 | 14 |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 6 | ENE 8 | E 5 | ENE 5 | E 6 | E 7 | E 7 | E 7 | ENE 7 | E 7 | E 7 | — | ENE 8 | ENE 7 | E 7 | E 7 | ENE 7 | ENE 7 | E 7 | E 6 |
| kJ | 53 | 50 | 58 | 19 | 40 | 60 | 126 | 148 | 161 | 261 | 251 | 186 | — | 204 | 193 | 131 | 88 | 139 | 111 | 59 | 69 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 12 | 12 | 12 | 15 | 22 | 15 | 12 | 14 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 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.
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