Surf Forecasts:
Duds Reef surf forecast from 15 Jul 2026:
- Best quality surf: Monday 20 Jul, 5AM (local time) - 1.5ft (0.5m), 17s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 15 Jul, 11PM (local time) - 3ft (0.9m), 15s period, SSW swell with 414 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 5AM (local time) - 1.5ft (0.5m), 17s period with S 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 Monday (Jul 20) at 5AM. The primary swell is predicted to be 0.5m and 17s period with a secondary swell of 0.5m and 11s. Another secondary swell of 1.0m and 8s is also forecast. 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 0.9m 15s and forecast to arrive on Wednesday (Jul 15) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Thursday (Jul 16) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 20th Jul) | 1.5ft (0.5m) 17s |
| Best Surf | 5AM (Mon 20th Jul) | 1.5ft (0.5m) 17s |
| Most Powerful | 11PM (Wed 15th Jul) | 3ft (0.9m) 15s |
Table - best surf conditions forecast for Duds Reef over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's cookin' at Duds Reef.
Well, I gotta be straight with you – the next 16 days are a tough watch. There's no real standout period, and the surf is pretty much always compromised by the wind. The outlook is a bit of a grind, with very few windows that even look marginal.
The first chance for anything resembling a wave comes on Wednesday, July 15th, but it's small and messy. You're looking at a weak 2ft swell from the SSW, but a 9 mph cross-onshore breeze from the SE is putting a chop on it. The water temp is a balmy 80°, which is pretty much normal for this time of year, so you won't need a thick wetsuit. The energy is weak (409), and it's just not worth paddling out for.
That pattern pretty much holds through the weekend. The wind stays stubbornly cross-shore from the E or ENE, at 15 to 19 mph, keeping the surface lumpy and ugly. The swell is small, mostly under 3ft, and often short period. The only slight change is on Sunday, July 19th, when the swell bumps up to 4ft from the E, but it's a short period 8 seconds, and still cross-shore. It's a no-go.
The second week doesn't get much better. From Monday, July 21st, through to the end of the month, the combined swell energy does get higher (often in the 600-900+ range), but the wind never lets up. It's a constant 15-19 mph cross-shore breeze. You'll see some bigger swells, like 5ft on July 28th and 29th, but the wind is still a mess. The setup here is a reef, so with that much wind and chop, it's a fight, not a fun session. The best you can hope for is a "marginal" tag on a few days, but honestly, for a reef break, that's not a good sign.
Given the persistent cross-shore wind and the size of the swell on a few days, this setup honestly looks more interesting for kite surfing than paddle surfing. There are no real standouts here. The forecast can always change, but right now, for the next two and a half weeks, I'd leave the board in the car and find something else to do.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 24°C on Wed night). Winds increasing (light winds from the E on Wed morning, fresh winds from the E by Thu afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Sat morning, min 24°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
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) | SSW 18 | SSW 13 | SSW 16 | SSW 13 | SSW 17 | SSW 14 | SSW 16 | SSW 16 | SSW 14 | SSW 13 | SSW 14 | E 8 | E 8 | ENE 8 | S 18 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 207 | 140 | 387 | 149 | 261 | 264 | 223 | 284 | 192 | 187 | 210 | 241 | 187 | 229 | 152 | 193 | 407 | 271 | 329 | 307 | 342 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 5:04PM0.83m | 5:11AM0.34m | 5:41PM0.77m | 6:08AM0.38m | 6:14PM0.69m | 7:09AM0.42m | 6:44PM0.60m | 8:16AM0.46m | 7:10PM0.51m | 9:31AM0.50m | 7:31PM0.43m | 10:46AM0.54m | 7:33PM0.36m | ||||||||
Low Tide | 9:42AM0.01m | 00:12AM0.11m | 10:31AM0.06m | 00:44AM0.11m | 11:21AM0.14m | 1:14AM0.10m | 12:16PM0.22m | 1:44AM0.11m | 1:23PM0.30m | 2:15AM0.11m | 3:02PM0.36m | 2:48AM0.12m | 6:02PM0.36m | 3:27AM0.12m | |||||||
 | |  |  | | | | | | | | | | | | | | | | | | |
 | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — |
 | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 27 | 25 | 27 | 27 | 25 | 26 | 27 | 25 |
Feels °C | 27 | 28 | 25 | 26 | 25 | 24 | 26 | 25 | 24 | 26 | 26 | 24 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | W 15 | W 15 | SSW 16 | W 14 | W 14 | SSW 14 | SSW 16 | SSW 16 | SSW 14 | E 6 | SSW 14 | S 12 | S 12 | S 13 | S 18 | S 16 | S 16 | ENE 7 | S 14 | S 14 | S 13 |
| kJ | 291 | 283 | 387 | 268 | 264 | 264 | 223 | 284 | 192 | 49 | 210 | 108 | 72 | 126 | 152 | 193 | 407 | 73 | 329 | 307 | 342 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | W 15 | ENE 6 | SSW 13 | W 14 | W 14 | W 14 | E 6 | SSW 13 | W 13 | WNW 12 | SE 9 | S 18 | SSW 11 | S 13 | SW 18 | S 15 | E 13 | E 13 | ENE 7 |
| kJ | 202 | 140 | 352 | 39 | 149 | 200 | 144 | 140 | 33 | 187 | 87 | 52 | 20 | 107 | 71 | 121 | 81 | 271 | 87 | 84 | 77 |
Swell 3 Height (m) Direction Period (s) | SSW 18 | ENE 7 | ENE 7 | SSW 13 | SSW 17 | SSW 17 | SSW 12 | SSW 12 | W 13 | W 13 | SSE 8 | SE 9 | WNW 12 | WNW 12 | SW 19 | SW 18 | SSE 6 | SSW 16 | SW 17 | SSW 16 | E 12 |
| kJ | 207 | 46 | 42 | 149 | 261 | 101 | 93 | 55 | 90 | 87 | 27 | 13 | 28 | 28 | 92 | 83 | 8 | 105 | 73 | 103 | 73 |
Wind waves Height (m) Direction Period (s) | — | — | — | NE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 7 | NE 7 | E 6 | E 8 | E 8 | ENE 8 | E 8 | ENE 8 | E 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | — | — | — | 109 | 37 | 85 | 98 | 85 | 35 | 63 | 84 | 241 | 187 | 229 | 130 | 101 | 118 | 66 | 111 | 125 | 132 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 12 | 6 | 13 | 12 | 12 | 12 | 14 | 12 | 12 | 12 | 16 | 12 | 12 | 6 | 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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