Surf Forecasts:
Duds Reef surf forecast from 9 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 2AM (local time) - 3.5ft (1.0m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 15 Sep, 8PM (local time) - 3ft (0.9m), 19s period, SW swell with 546 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 2AM (local time) - 3.5ft (1.0m), 14s period with SSW 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 (Sep 09) at 2AM. The primary swell is predicted to be 1.0m and 14s period with a secondary swell of 1.4m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Duds Reef in the next 16 days are 0.9m 19s and forecast to arrive on Tuesday (Sep 15) at 8PM. 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+) | 2AM (Wed 9th Sep) | 3.5ft (1.0m) 14s |
| Best Surf | 2AM (Wed 9th Sep) | 3.5ft (1.0m) 14s |
| Most Powerful | 8PM (Tue 15th Sep) | 3ft (0.9m) 19s |
Table - best surf conditions forecast for Duds Reef over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what we’ve got coming down the pipe. Let me be straight with you – it’s a grim stretch ahead for Duds Reef. I’m looking at the whole 16-day window and the first half of it is a real write-off. There are some tiny glimmers later on, but nothing that screams "paddle out now."
The pattern is mostly messy. We’ve got a lot of lumpy, cross-shore wind and choppy water, especially early on. The swell direction is all over the shop, but the winds are almost constantly ruining what little surf there is. For the first four or five days, the quality is just poor, so don't bother.
The best of a bad bunch actually shows up on Wednesday, September 9th. Wednesday afternoon we finally get a break. The wind drops right off to glassy – that's a huge positive – with some clouds overhead. Swell is small, only 3ft from the SSW, but it’s a long-period groundswell at 13 seconds, so it’ll have some shape and push. The combined wave energy is weak at 351. The water temp is a warm 81°F, pretty normal for this time of year. For a spot that’s a fairly consistent reef, this is as clean as it’s going to get. The optimum swell is from the SSE and we’re getting SSW, so it’s not a perfect match, but with offshore wind from the WNW and those glassy conditions, this is your only real window for a clean wave. Just keep in mind, Duds Reef (Duds-Reef) can draw a crowd sometimes, so you might have some company on the takeoff.
Saturday, September 12th afternoon also looks clean with a light breeze and a cross-off wind, but the swell is tiny at 2ft from the SW with a very long 16-second period. The combined energy is a paltry 286. It’ll be pretty small and gutless, but at least the surface will be clean. That’s about the best you can hope for in this run.
Beyond that, we’re back into cross-shore winds and messy conditions from the 14th onwards. There are a few pulses of bigger swell – like Tuesday the 17th with 5ft from the E and some strong cross-shore wind – but that’s a recipe for lumpy, unrideable junk. Not worth your time. The second week is a write-off, honestly. Winds stay strong from the ENE and the swell is small and inconsistent.
Look, this is a bleak one. If you’re desperate, wait for Wednesday afternoon, September 9th. Otherwise, save the wax.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 28°C on Tue afternoon, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Fri afternoon, min 24°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | SSW 8 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | SSW 18 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SSW 13 | SW 15 | SSW 15 | SSW 14 | SSW 14 | SW 22 | SW 21 |
Wave Graph  | ||||||||||||||||||||
 kJ | 537 | 431 | 331 | 253 | 176 | 181 | 211 | 268 | 258 | 229 | 226 | 245 | 124 | 116 | 106 | 84 | 134 | 76 | 227 | 224 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | on | glassy | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-off | cross | cross | cross | cross-off | cross | cross | cross |
High Tide | 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 | 5:11AM0.62m | 4:46PM0.48m | 5:51AM0.63m | 5:07PM0.41m | |||||||
Low Tide | 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 | 11:21AM0.20m | 10:57PM0.08m | 12:14PM0.24m | 11:18PM0.09m | |||||||
 |  | |  |  |  | | | | | | | | | | | | | | | |
 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — |
mm | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 28 | 26 | 27 | 26 | 25 | 27 | 28 | 26 | 27 | 28 | 27 |
Feels °C | 29 | 31 | 31 | 32 | 32 | 27 | 26 | 27 | 26 | 28 | 27 | 28 | 26 | 26 | 27 | 28 | 28 | 28 | 28 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SW 8 | SSW 14 | SSW 13 | ENE 7 | ENE 7 | E 7 | SW 16 | SW 16 | ENE 11 | ENE 10 | SW 16 | ENE 10 | E 9 | E 6 | E 6 | E 6 | E 6 | E 6 | SW 21 |
| kJ | 537 | 226 | 331 | 253 | 91 | 136 | 127 | 268 | 258 | 156 | 158 | 245 | 75 | 60 | 21 | 15 | 24 | 22 | 18 | 224 |
Swell 2 Height (m) Direction Period (s) | ENE 11 | SSW 14 | ENE 9 | ENE 8 | SSW 13 | SSW 13 | SSW 12 | E 11 | E 7 | SW 15 | SW 15 | ENE 10 | SW 16 | SSW 13 | SW 15 | SSW 15 | SSW 14 | SSW 14 | SW 22 | SSW 13 |
| kJ | 380 | 431 | 94 | 55 | 176 | 173 | 175 | 64 | 45 | 229 | 226 | 100 | 124 | 116 | 106 | 84 | 134 | 76 | 227 | 68 |
Swell 3 Height (m) Direction Period (s) | W 8 | ENE 10 | SSW 8 | SSW 7 | E 13 | SSW 16 | SSW 18 | SSW 12 | E 11 | SW 9 | SSW 11 | SW 8 | SW 13 | SSW 16 | SSW 12 | NE 9 | NE 9 | NE 9 | SSW 14 | SW 18 |
| kJ | 146 | 194 | 58 | 43 | 115 | 181 | 211 | 77 | 88 | 28 | 40 | 11 | 87 | 98 | 57 | 20 | 20 | 20 | 74 | 81 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | ENE 7 | ENE 7 | — | — | — | — | — | — | — | — | ENE 6 | ENE 5 | ENE 5 | E 7 |
| kJ | — | — | — | — | — | — | 186 | 79 | — | — | — | — | — | — | — | — | 42 | 29 | 29 | 44 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 27 | 0 | 12 | 0 | 6 | 12 | 12 | 12 | 12 | 6 | 6 | 12 | 0 | 12 | 10 | 10 | 0 | 10 | 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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