Surf Forecasts:
Duds Reef surf forecast from 4 Jul 2026:
- Most powerful swell: Saturday 4 Jul, 8PM (local time) - 3ft (0.9m), 20s period, SSW swell with 634 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 0.9m 20s and forecast to arrive on Saturday (Jul 04) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 14s period and expected on Friday (Jul 10) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sat 4th Jul) | 3ft (0.9m) 20s |
Table - best surf conditions forecast for Duds Reef over the next 16 days.
Updates in hr min s Forecast update imminent
Howdy, Rusty here again, same story in feet and degrees. Honestly, this 16-day stretch for Duds Reef is about as lackluster as it gets. Not a single proper standout—just a whole lot of cross-shore wind and crumby conditions. From the jump on July 3rd through July 10th, you’re looking at continuous “poor surf conditions.” Swell runs from 2ft to about 6ft, mostly from the SSW or east-northeast, but periods are either short (6–8 seconds) or long (14–21 seconds), and the wind—ENE at 19 to 22 mph—keeps things cross-shore and lumpy. Combined swell energy is moderate (218 to 918), but there’s no quality. Water temp is 80°F with a 0.9°F anomaly, so about normal for the season. It’s a wash.
July 11th Saturday afternoon offers a tiny bright spot. The wind goes cross-offshore out of the northeast at 19 mph, leaving the surface clean. Swell is 2ft from the SW at 18 seconds—that’s a long-period groundswell with some punch (511 energy), but it’s still marginal and only a 1 out of 10. Duds Reef is a reef break, which suits that SW direction, but the size is small and the tide could be a factor. After that, from July 12th through to the 18th, it’s back to poor: cross-shore winds, lumpy seas, and nothing worth a paddle.
If you’ve got to get wet, July 11th afternoon is the cleanest window, but it’s a gamble. Crowds are “sometimes,” so you won’t be fighting for waves, mainly because there aren’t many. This kind of quiet period is normal around here—forecasts can flip, but right now, it’s a hard pass.
- Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Fri afternoon, min 24°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Mon afternoon, min 23°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Fri 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | SSW 16 | S 21 | SSW 20 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | ENE 8 | ENE 8 | E 8 | SSW 14 | SSW 13 | E 7 | ENE 7 | ENE 7 | E 7 | E 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 216 | 226 | 441 | 512 | 486 | 522 | 510 | 457 | 446 | 481 | 376 | 350 | 345 | 377 | 285 | 239 | 238 | 186 | 178 | 198 | 142 |
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 | 6:15PM0.69m | 6:47AM0.33m | 6:43PM0.64m | 7:55AM0.37m | 7:12PM0.58m | 9:11AM0.43m | 7:44PM0.51m | 10:27AM0.50m | 8:20PM0.44m | 11:34AM0.59m | 9:13PM0.36m | 12:32PM0.68m | 10:39PM0.30m | 1:24PM0.75m | |||||||
Low Tide | 1:32AM0.15m | 11:37AM0.19m | 1:59AM0.13m | 12:32PM0.26m | 2:29AM0.12m | 1:54PM0.33m | 3:02AM0.10m | 3:59PM0.36m | 3:40AM0.08m | 6:29PM0.34m | 4:26AM0.06m | 8:13PM0.28m | 5:19AM0.03m | ||||||||
 |  |  | |  | | | | | | | | | | | | | | | | | |
 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 |
 | 7:17 | — | — | 7:17 | — | — | 7:17 | — | — | 7:17 | — | — | 7:17 | — | — | 7:17 | — | — | 7:17 | — | 7:16 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 26 | 26 | 25 | 25 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 25 | 26 |
Feels °C | 25 | 24 | 23 | 23 | 24 | 22 | 23 | 22 | 22 | 22 | 21 | 23 | 23 | 21 | 23 | 22 | 22 | 24 | 23 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | ENE 8 | SSW 16 | SSW 20 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 12 | S 12 | S 12 | S 12 |
| kJ | 216 | 155 | 280 | 512 | 486 | 522 | 510 | 457 | 446 | 481 | 376 | 350 | 336 | 254 | 243 | 239 | 178 | 112 | 110 | 75 | 70 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 16 | S 21 | SSW 15 | SSW 15 | SSW 14 | SW 14 | SSW 13 | SSE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | W 14 | W 14 |
| kJ | 103 | 226 | 441 | 158 | 188 | 183 | 51 | 34 | 7 | 15 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 12 | 22 | 58 | 58 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SSW 12 | NW 12 | NW 12 | NW 11 | SSE 11 | SSE 11 | NW 10 | SSE 10 | NW 10 | S 10 | NW 9 | SE 10 | — | W 18 | S 18 | W 16 | W 15 | W 14 | SSE 8 | SSE 8 |
| kJ | 21 | 59 | 37 | 35 | 32 | 22 | 22 | 4 | 9 | 4 | 2 | 3 | 4 | — | 6 | 25 | 19 | 39 | 63 | 6 | 6 |
Wind waves Height (m) Direction Period (s) | ENE 8 | — | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | E 7 | ENE 8 | ENE 8 | E 8 | E 7 | ENE 8 | E 7 | ENE 7 | ENE 7 | E 7 | E 7 |
| kJ | 186 | — | 178 | 191 | 169 | 191 | 247 | 255 | 293 | 327 | 251 | 308 | 345 | 377 | 285 | 202 | 238 | 186 | 178 | 198 | 142 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 22 | 12 | 13 | 14 | 12 | 21 | 24 | 16 | 144 | 145 | 16 | 21 | 145 | 15 | 21 | 21 | 12 | 12 | 29 | 12 | 21 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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