
Surf Forecasts:
Duds Reef surf forecast from 6 Sep 2026:
- Best quality surf: Sunday 13 Sep, 5AM (local time) - 2.5ft (0.7m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 13ft (4.0m), 13s period, SSW swell with 5,692 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 5AM (local time) - 2.5ft (0.7m), 16s 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 Sunday (Sep 13) at 5AM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 1.1m and 6s. 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 4.0m 13s and forecast to arrive on Tuesday (Sep 08) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 10s period and expected on Tuesday (Sep 08) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sun 13th Sep) | 2.5ft (0.7m) 16s |
| Best Surf | 5AM (Sun 13th Sep) | 2.5ft (0.7m) 16s |
| Most Powerful | 2AM (Tue 8th Sep) | 13ft (4.0m) 13s |
Table - best surf conditions forecast for Duds Reef over the next 16 days.
The Lowdown
Right, mates, Rusty here. Let’s have a look at what’s cookin’ for Duds Reef over the next couple of weeks. I’ll level with ya, it’s a bit of a tough stretch ahead.
Overall Pattern
We're looking at a pretty bleak run for Duds Reef. There’s a pulse of moderate energy early on, but the wind and conditions are all wrong for clean surfing. After that first Sunday, it’s pretty much a write-off for decent waves for nearly two weeks. The water temp is sittin' around 81°, which is pretty average for this time of year, just a touch warmer than usual.
Period Breakdown
Alright, so we kick off on Sunday, the 6th of September. There’s some swell in the water – I’m seeing around 6 ft from the east, and that combined energy is a solid 1834 (moderate wave energy). But here’s the rub: the wind is rippin' out of the east-northeast at 19 mph, and it’s a cross-shore breeze. That’s gonna make things lumpy and choppy. The commentary says it’s a "marginal surf forecast or questionable tide conditions," so it’s a real no-go.
Sunday afternoon and Monday the 7th look even worse, with cross-onshore winds from the east and east-southeast gusting up to 19 mph whipping up that 6 ft to 7 ft of swell into a total mess. The energy hits a peak of 3247 (moderate wave energy) Monday arvo, but it’s all blown out.
From Tuesday the 8th right through to Monday the 21st of September, the story is the same: poor surf conditions. There’s a tiny window on Tuesday the 15th of September in the afternoon where the wind drops to zero and it goes glassy, with a clean-looking 2 ft swell from the southwest. But that's a long way off, and it’s the only real glimmer in weeks. For the most part, the swell is small, the wind is either cross, cross-onshore, or lumpy. It’s a desert out there.
Best of a Bad Bunch
Honestly, there’s no standout session here. The only time I’d even think about paddling out is that Tuesday afternoon, the 15th of September. The wind goes dead calm, glassy conditions, and that 2 ft southwest groundswell (20-second period) will have some real push and shape. But it's small, and a long-period swell like that can be a bit straight at a reef, so you’d want it at the right tide. Don’t expect much.
Bottom Line
It’s a lean patch for Duds Reef. The first Sunday has the size but is too windy. After that, it’s mostly small and messy with a few ‘marginal’ tags. That one glassy afternoon on the 15th is a distant, iffy highlight. This is just one of those periods where you wait for the next weather change.
Rusty.
Short Range ForecastHeavy rain (total 25mm), heaviest during Mon morning. Warm (max 28°C on Mon afternoon, min 24°C on Sun night). Winds decreasing (fresh winds from the ESE on Mon night, light winds from the SSE by Tue night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 28°C on Wed morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 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) | E 12 | E 12 | SSW 13 | E 12 | SSW 13 | SSW 13 | SSW 9 | SSW 8 | SSW 14 | SSW 14 | SSW 13 | ENE 8 | ENE 7 | SSW 18 | SW 16 | SW 16 | ENE 12 | ENE 11 | SW 16 | ENE 10 | SSW 13 |
Wave Graph | |||||||||||||||||||||
884 | 827 | 1303 | 988 | 1465 | 5692 | 901 | 439 | 431 | 331 | 253 | 176 | 225 | 211 | 268 | 261 | 242 | 297 | 260 | 173 | 116 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 12:50PM0.73m | 00:58AM0.28m | 1:37PM0.75m | 1:49AM0.35m | 2:17PM0.75m | 2:33AM0.42m | 2:52PM0.72m | 3:14AM0.49m | 3:25PM0.68m | 3:53AM0.55m | 3:54PM0.62m | 4:32AM0.59m | 4:21PM0.55m | ||||||||
Low Tide | 8:24PM0.16m | 6:09AM0.09m | 8:46PM0.13m | 7:12AM0.08m | 9:09PM0.11m | 8:06AM0.08m | 9:31PM0.09m | 8:56AM0.09m | 9:53PM0.08m | 9:45AM0.12m | 10:14PM0.07m | 10:32AM0.16m | 10:36PM0.07m | ||||||||
6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | |
— | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | |
mm | — | 3 | 4 | 5 | 2 | 6 | 4 | — | 1 | — | 2 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 25 | 26 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 26 | 27 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 25 |
Feels °C | 25 | 27 | 26 | 26 | 28 | 25 | 27 | 29 | 31 | 30 | 31 | 28 | 26 | 26 | 24 | 24 | 25 | 24 | 25 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | E 12 | SSW 13 | SSW 12 | SSW 13 | SSW 13 | WSW 10 | SSW 8 | SSW 8 | SSW 14 | SSW 13 | ENE 8 | ENE 7 | E 7 | SW 16 | SW 16 | ENE 12 | SSW 15 | E 10 | SW 16 | SSW 13 |
539 | 827 | 1303 | 615 | 1465 | 5692 | 720 | 439 | 176 | 331 | 253 | 75 | 114 | 124 | 268 | 261 | 242 | 283 | 260 | 124 | 116 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 12 | E 12 | SSW 17 | SSW 17 | ENE 12 | ENE 11 | W 9 | SSW 14 | SSW 7 | ENE 8 | SSW 13 | SSW 13 | SSW 12 | E 11 | ENE 12 | SW 15 | SW 8 | SW 16 | SW 13 | ENE 10 |
392 | 787 | 957 | 589 | 702 | 755 | 512 | 268 | 431 | 73 | 70 | 176 | 186 | 117 | 94 | 140 | 229 | 25 | 245 | 87 | 55 | |
Swell 3 Height (m) Direction Period (s) | SSE 10 | E 16 | SSW 18 | SSE 8 | NW 13 | SSW 15 | SSW 15 | ENE 11 | ENE 10 | ENE 9 | SSW 7 | E 13 | SSW 16 | SSW 18 | SW 11 | SW 9 | SW 9 | SE 8 | SW 8 | SW 8 | SSW 16 |
19 | 78 | 344 | 92 | 7 | 574 | 596 | 373 | 183 | 88 | 42 | 115 | 181 | 211 | 55 | 55 | 28 | 18 | 10 | 10 | 98 | |
Wind waves Height (m) Direction Period (s) | E 12 | — | — | E 12 | E 12 | SSE 7 | SSW 9 | — | — | — | — | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | ENE 11 | — | ENE 10 | ENE 6 |
884 | — | — | 988 | 1080 | 627 | 901 | — | — | — | — | 151 | 225 | 186 | 125 | 60 | — | 297 | — | 173 | 48 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 12 | 6 | 146 | 76 | 97 | 97 | 31 | 12 | 12 | 12 | 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.










