Surf Forecasts:
Duds Reef surf forecast from 30 Jul 2026:
- Best quality surf: Thursday 30 Jul, 8AM (local time) - 2.5ft (0.8m), 14s period, S swell with cross-offshore winds.
- Most powerful swell: Saturday 1 Aug, 8AM (local time) - 8ft (2.5m), 8s period, E swell with 829 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 2AM (local time) - 2.5ft (0.8m), 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 Thursday (Jul 30) at 2AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 0.9m 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 2.5m 8s and forecast to arrive on Saturday (Aug 01) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Wednesday (Aug 05) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 30th Jul) | 2.5ft (0.8m) 14s |
| Best Surf | 8AM (Thu 30th Jul) | 2.5ft (0.8m) 14s |
| Most Powerful | 8AM (Sat 1st Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Duds Reef over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break down the same grim story for Duds Reef, but in feet and miles per hour.
The outlook is bleak. We’re staring down a long, ugly stretch with hardly anything worth getting wet for. The first real chance to get a wave is on Wednesday afternoon, July 30th. The wind will be a light cross-offshore from the NE at only 3 mph, which will keep the surface clean. Swell is from the ENE at 4ft with a 11-second period, giving us a moderate combined swell energy of 447. It’s the only session that’s rated as clean, but the wave height is small. It’s a longboard or foil special.
The rest of the forecast is a disaster. From Thursday on, it’s a relentless cross-shore wind from the ENE, often blowing 15 to 28 mph, just tearing the ocean up. The swell comes and goes, but it’s all short-period, wind-blown slop. By August 1st, we get a bump in swell to 8ft from the E, but it’s attached to a nasty 28 mph cross-shore wind. It’s a total mess. That setup is more interesting for kite surfing than paddle surfing.
There’s one tiny bright spot way down the line. On Wednesday afternoon, August 12th, we get a glassy, calm wind (0 mph). The swell is tiny, just 2ft from the SSW, but with a period of 13 seconds. The energy is weak at 257. If you have a log and low expectations, it’s the only other time you might find a ripple. But for the next 16 days, Duds Reef is a bust.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 24°C on Fri night). Winds increasing (calm on Wed night, strong winds from the ENE by Sat morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Mon afternoon, min 24°C on Sat night). Winds decreasing (strong winds from the ENE on Sat afternoon, light winds from the ENE by Tue morning). | |||||||||||||||||||
Wed 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | ||||||||||||||
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) | S 14 | SSW 14 | S 14 | SSW 18 | SW 16 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 257 | 254 | 232 | 222 | 268 | 261 | 337 | 609 | 703 | 659 | 630 | 566 | 422 | 317 | 246 | 217 | 439 | 390 | 297 | 173 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross-off | cross-off |
High Tide | 4:17PM0.75m | 4:07AM0.34m | 4:44PM0.73m | 4:49AM0.37m | 5:10PM0.70m | 5:33AM0.41m | 5:35PM0.65m | 6:22AM0.44m | 5:59PM0.58m | 7:18AM0.48m | 6:23PM0.51m | 8:25AM0.52m | 6:46PM0.44m | |||||||
Low Tide | 11:17PM0.15m | 9:35AM0.07m | 11:39PM0.13m | 10:13AM0.10m | 00:01AM0.12m | 10:55AM0.16m | 00:23AM0.11m | 11:42AM0.22m | 00:48AM0.10m | 12:42PM0.28m | 1:16AM0.09m | 2:09PM0.34m | 1:51AM0.09m | |||||||
 |  | | | |  | |  | | | | | | | | | | | | | |
 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 25 | 26 | 26 | 25 | 27 | 27 | 24 | 27 | 28 | 25 | 26 | 27 | 25 |
Feels °C | 29 | 30 | 28 | 28 | 26 | 24 | 24 | 23 | 21 | 22 | 22 | 23 | 23 | 22 | 25 | 26 | 24 | 26 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 8 | ENE 8 | E 8 | S 13 | S 12 | SW 15 | SW 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | E 12 | E 12 | ENE 12 | ENE 11 | ENE 11 | ENE 10 |
| kJ | 227 | 125 | 159 | 121 | 212 | 151 | 236 | 220 | 205 | 194 | 144 | 188 | 142 | 87 | 77 | 110 | 439 | 390 | 297 | 173 |
Swell 2 Height (m) Direction Period (s) | S 14 | SSW 14 | S 14 | S 13 | SW 16 | SW 16 | E 16 | E 15 | SW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SW 13 | SW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 15 |
| kJ | 257 | 254 | 232 | 222 | 268 | 261 | 231 | 205 | 194 | 123 | 131 | 133 | 116 | 42 | 42 | 50 | 56 | 54 | 43 | 87 |
Swell 3 Height (m) Direction Period (s) | SW 19 | SW 19 | SSW 18 | SSW 18 | E 16 | E 15 | S 12 | S 12 | SSW 12 | S 11 | S 11 | S 11 | W 12 | SSW 13 | SSW 13 | SE 6 | SE 9 | SE 8 | SSW 16 | SSW 11 |
| kJ | 59 | 95 | 209 | 207 | 81 | 159 | 106 | 71 | 45 | 39 | 22 | 21 | 25 | 34 | 55 | 9 | 22 | 18 | 107 | 40 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | — | — | — | — |
| kJ | — | — | — | — | 168 | 256 | 337 | 609 | 703 | 659 | 630 | 566 | 422 | 317 | 246 | 217 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1 | 0 | 12 | 12 | 12 | 21 | 24 | 144 | 148 | 148 | 24 | 24 | 27 | 16 | 16 | 16 | 15 | 12 | 0 | 0 |
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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