Surf Forecasts:
Duds Reef surf forecast from 13 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 5AM (local time) - 2.5ft (0.8m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 16 Jul, 2AM (local time) - 3ft (0.9m), 16s period, SSW swell with 387 kJ wave energy.
- Next surfable swell (1★+): Tuesday 14 Jul, 5AM (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 Tuesday (Jul 14) at 5AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 1.1m and 8s. 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 16s and forecast to arrive on Thursday (Jul 16) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 7s period and expected on Thursday (Jul 16) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 14th Jul) | 2.5ft (0.8m) 14s |
| Best Surf | 5AM (Tue 14th Jul) | 2.5ft (0.8m) 14s |
| Most Powerful | 2AM (Thu 16th Jul) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for Duds Reef over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer.
To be honest, mate, it’s a tough stretch ahead. The whole 16-day window looks pretty grim for any proper surfing. The first week and a half is basically a write-off, with nothing but small, messy swell and cross-shore winds. The water temp is sitting at 79°, which is about average for the time of year, so you can’t even blame a cold snap for the lack of action.
The only break we’ve got to work with is Duds Reef, and it lives up to the name for most of this run. It’s a fairly consistent reef set-up, but the swell direction is mostly from the SSW, which is the opposite of what it wants (optimum is SSE). That alone kills the potential. The cross-shore wind from the ENE is a constant buzzkill, and the wave heights are tiny – mostly 2ft to 3ft. Even when a bit of swell shows up, the period is often long, over 15 seconds, which means it’ll be breaking straight and won’t hold up on a reef.
There’s a bit of a bump in energy around the 23rd of July, with the combined swell energy hitting 894 (moderate) and a swell of 4ft from the ENE, but it’s still cross-shore and the wave comment is marginal at best. Then on the 28th of July, the energy really jumps up to 1147 and 1202 (strong) with swell building to 5ft to 6ft from the E and ENE. That’s the biggest swell of the period, but it’s still cross-shore, which will leave it lumpy. At 6ft, it’s not massive, but with the poor conditions, it’s not a goer for most.
Honestly, there’s no standout session here. The whole forecast is a long gap of poor to marginal surf. You’d be better off saving your energy. Forecasts can change, but as it stands, it’s a blank run.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Tue morning. Warm (max 26°C on Mon afternoon, min 23°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Thu afternoon, min 24°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
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) | SW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SW 13 | SSW 13 | SSW 14 | SSW 16 | SSW 16 | SSW 17 | SW 14 | ENE 7 | SSW 16 | SSW 14 | E 7 | SSW 14 | E 8 | E 8 | ENE 8 | E 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 322 | 309 | 257 | 236 | 232 | 170 | 202 | 257 | 387 | 175 | 261 | 214 | 131 | 196 | 215 | 211 | 160 | 212 | 213 | 176 | 149 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 3:43PM0.88m | 3:23AM0.28m | 4:25PM0.87m | 4:16AM0.31m | 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 | ||||||||
Low Tide | 8:02AM-0.03m | 11:04PM0.13m | 8:53AM-0.02m | 11:38PM0.11m | 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 | |||||||
 |  |  |  | |  | | |  | | | | | | | | | | | | | |
 | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — |
 | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — |
mm | — | — | — | 1 | 1 | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 24 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 24 |
Feels °C | 23 | 23 | 23 | 25 | 25 | 25 | 26 | 27 | 26 | 25 | 26 | 24 | 24 | 25 | 25 | 24 | 25 | 24 | 25 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | ENE 8 | W 15 | W 15 | SSW 16 | ENE 6 | ENE 6 | SW 14 | W 14 | SSW 16 | SSW 14 | SSW 10 | SSW 14 | E 8 | SSW 13 | E 7 | E 8 |
| kJ | 322 | 309 | 257 | 236 | 232 | 81 | 291 | 283 | 387 | 55 | 68 | 214 | 195 | 196 | 215 | 88 | 160 | 120 | 127 | 172 | 49 |
Swell 2 Height (m) Direction Period (s) | SSE 12 | W 18 | W 18 | W 16 | W 16 | W 15 | ENE 7 | SSW 14 | W 15 | W 14 | W 14 | W 14 | SW 16 | W 14 | W 13 | S 14 | SSW 9 | SSW 12 | S 19 | S 13 | SSW 11 |
| kJ | 46 | 152 | 225 | 257 | 257 | 298 | 54 | 257 | 279 | 268 | 264 | 200 | 125 | 140 | 128 | 94 | 47 | 85 | 66 | 125 | 70 |
Swell 3 Height (m) Direction Period (s) | W 12 | SSE 11 | SW 18 | SW 19 | SW 19 | SW 13 | SSW 13 | ENE 7 | ENE 6 | SSW 16 | SSW 17 | SSE 7 | SSW 12 | SSW 12 | SE 9 | W 13 | W 13 | SSW 8 | WNW 12 | S 18 | S 18 |
| kJ | 26 | 25 | 82 | 183 | 93 | 170 | 202 | 51 | 41 | 175 | 261 | 21 | 55 | 55 | 37 | 87 | 87 | 28 | 28 | 104 | 97 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | E 7 | — | — | NE 7 | ENE 6 | ENE 7 | ENE 6 | ENE 7 | ENE 6 | E 7 | E 7 | E 7 | E 8 | E 8 | ENE 8 | E 7 |
| kJ | 247 | 223 | 153 | 151 | 123 | 40 | — | — | 156 | 107 | 70 | 85 | 131 | 143 | 148 | 211 | 139 | 212 | 213 | 176 | 149 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 15 | 12 | 10 | 12 | 6 | 12 | 12 | 12 | 12 | 21 | 12 | 13 | 13 | 12 | 14 | 21 | 16 | 12 | 13 | 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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