Surf Forecasts:
Sandy Beach surf forecast from 31 Aug 2026:
- Best quality surf: Monday 7 Sep, 2AM (local time) - 10ft (3.0m), 13s period, ENE swell with cross-shore winds.
- Most powerful swell: Monday 7 Sep, 2AM (local time) - 10ft (3.0m), 13s period, ENE swell with 2,718 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 2AM (local time) - 10ft (3.0m), 13s period with ENE swell.
Best Forecast Surf Conditions for Sandy Beach this week:
The surf forecast for Sandy Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 2AM. The primary swell is predicted to be 3.0m and 13s period with a secondary swell of 2.5m and 13s. Another secondary swell of 0.7m and 15s is also forecast. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Sandy Beach in the next 16 days are 3.0m 13s and forecast to arrive on Monday (Sep 07) 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 0.9m 11s period and expected on Sunday (Sep 06) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 7th Sep) | 10ft (3.0m) 13s |
| Best Surf | 2AM (Mon 7th Sep) | 10ft (3.0m) 13s |
| Most Powerful | 2AM (Mon 7th Sep) | 10ft (3.0m) 13s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, Rusty here. I've been watching the charts for Sandy Beach and I've got to level with you—it's a dry spell. There's a big, empty gap in the forecast before anything remotely surfable shows.
We start Monday, August 31st with a messy 7ft easterly swell, but it's short-period junk (7 seconds) and the wind is a stiff cross-shore out of the ENE at 22 mph. It's all chop and lump. That poor surf carries on for days. Tuesday the 1st and Wednesday the 2nd are more of the same: lumpy cross-chop with 6ft to 6ft of short-period slop.
Thursday the 3rd gets nasty. The swell jumps to 8ft, but the wind strengthens to a strong 28 mph cross-shore. Total washing machine. Friday the 4th is even bigger—10ft—with the same strong cross-wind. Honestly, this looks more like a kitesurfing setup than a paddle surfing one. The water temp is 80°, right about average for now.
The first real change comes Saturday, September 5th. We've got an 8ft swell from the ENE with a period stretching to 13 seconds—that's a proper groundswell. Swell energy is very strong. But the wind is still a fresh cross-shore, so it's lumpy. The conditions are marginal. The swell is over 8ft, so this is strictly for experts, and with that long period at a beach break like Sandy's, it'll be big and closing out. The wind stays cross-shore through Sunday the 6th.
Now, Monday the 7th of September is a tease. We're looking at a huge 10ft to 12ft ENE groundswell with a 12-13 second period and massive energy. The Monday afternoon forecast shows the wind turning cross-offshore out of the NNE, which would make it *clean*. But the file says it's simply too big for this break. Huge, powerful, expert-only territory. Tuesday the 8th is even bigger at 13ft, but it's cross-shore and then cross-onshore with a thunderstorm risk—a total no-go.
After that, it fades. From Wednesday the 9th through the end of the 16-day window, we're back to small, weak, short-period ENE swell in the 5ft to 7ft range. The wind is still cross or cross-onshore most days. The one tiny bright spot is Monday the 14th of September: the swell is a modest 6ft, but the wind goes glassy out of the NE with light airs. It could be a small, clean window for a longboard, but it's still marginal.
So, the honest truth: there is no standout. The whole 16-day run is a write-off. The only break is Sandy Beach, and it's a consistent spot but it gets hammered by wind or blown out by size for nearly the whole forecast. It tends not to stay poor for long here, but this is a rough stretch.
Take a break. The ocean will sort itself out.
- Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 25°C on Mon morning). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Warm (max 27°C on Sat afternoon, min 25°C on Thu morning). Mainly strong winds. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 16 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 13 | ENE 13 | ENE 13 | E 13 | ENE 13 | ENE 13 |
Wave Graph | |||||||||||||||||||||
405 | 439 | 383 | 414 | 443 | 445 | 422 | 372 | 806 | 730 | 672 | 1055 | 1156 | 725 | 494 | 2091 | 1864 | 2059 | 1962 | 1725 | 2718 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross |
High Tide | 4:46PM0.43m | 6:14AM0.56m | 5:18PM0.36m | 7:19AM0.59m | 5:54PM0.28m | 8:36AM0.61m | 7:01PM0.22m | 9:55AM0.64m | 9:27PM0.19m | 11:03AM0.68m | 11:10PM0.21m | 12:00PM0.71m | 00:14AM0.26m | ||||||||
Low Tide | 11:35AM0.19m | 11:23PM0.04m | 12:53PM0.23m | 11:56PM0.04m | 2:47PM0.24m | 00:39AM0.05m | 5:18PM0.21m | 1:39AM0.06m | 6:33PM0.16m | 3:03AM0.07m | 7:10PM0.12m | 4:28AM0.06m | 7:41PM0.09m | ||||||||
6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | |
— | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 25 | 26 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 25 | 25 | 26 | 26 | 26 | 27 | 26 | 26 | 26 | 26 |
Feels °C | 21 | 23 | 21 | 22 | 24 | 24 | 24 | 23 | 23 | 21 | 22 | 20 | 20 | 21 | 23 | 24 | 26 | 25 | 25 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | S 19 | SSW 18 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | S 14 | SSE 12 | SSE 11 | S 11 | E 13 | S 10 | ENE 13 | SSW 10 | E 13 | SW 10 | ENE 13 |
144 | 138 | 192 | 329 | 314 | 364 | 422 | 318 | 275 | 206 | 195 | 187 | 234 | 251 | 413 | 290 | 1864 | 186 | 1962 | 148 | 2157 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | SW 14 | S 12 | S 10 | SSE 10 | S 11 | S 11 | E 13 | E 12 | S 13 | E 13 | E 13 | S 10 | SW 18 | S 10 | SSW 16 | SW 11 | SSW 16 | SSW 15 |
57 | 55 | 51 | 51 | 77 | 35 | 34 | 63 | 37 | 119 | 107 | 130 | 170 | 281 | 264 | 79 | 151 | 102 | 163 | 295 | 228 | |
Swell 3 Height (m) Direction Period (s) | S 21 | SSW 19 | SW 14 | S 10 | SW 14 | SW 14 | E 14 | E 14 | SSW 13 | S 10 | SE 13 | SW 18 | S 14 | SSW 13 | S 13 | NNE 10 | SSW 12 | S 12 | SSW 16 | S 12 | SW 9 |
34 | 122 | 54 | 30 | 51 | 51 | 33 | 66 | 17 | 18 | 82 | 12 | 93 | 17 | 128 | 21 | 115 | 46 | 173 | 69 | 64 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 13 | — | ENE 13 | ENE 13 | ENE 13 | ENE 13 |
405 | 439 | 383 | 414 | 443 | 445 | 382 | 372 | 806 | 730 | 672 | 1055 | 1156 | 725 | 494 | 2091 | — | 2059 | 1009 | 1725 | 2718 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 55 | 55 | 47 | 47 | 110 | 47 | 47 | 59 | 55 | 111 | 113 | 113 | 110 | 63 | 55 | 48 | 48 | 47 | 49 | 55 | 16 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Sandy Beach Surf forecast
The above surf forecast table for Sandy Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sandy Beach can be found by selecting the local surf guide option on the grey menu. Our Sandy Beach 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 (Sandy Beach) 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 Sandy Beach 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.
Sandy's Beach is 15 km (9 miles) from the city of Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.











