Surf Forecasts:
Sandy Beach surf forecast from 11 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 2PM (local time) - 7ft (2.2m), 8s period, ENE swell with 572 kJ wave energy.
Best Forecast Surf Conditions for Sandy Beach this week:
The most powerful waves expected at Sandy Beach in the next 16 days are 2.2m 8s and forecast to arrive on Sunday (Jul 12) at 2PM. 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 17s period and expected on Sunday (Jul 12) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sun 12th Jul) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
Alright, Rusty here. Let’s be straight with you – this outlook for Sandy Beach is a tough one. We’re looking at a solid 16-day window, but the honest truth is there’s a whole lot of wind and chop in the way, and the surf quality just isn't there for most of it. The first decent-looking wave doesn't show up until Saturday, July 25th, and even then it's a bit of a stretch.
For the first couple of weeks, from Friday, July 10th right through to Friday, July 24th, it’s pretty much a write-off. The ENE wind is relentless, blowing 25 to 28 mph, and it’s coming straight across the break or onshore. That means every bit of swell that shows up – and there is some size, with waves hitting 5 ft to 7 ft – gets completely torn apart. The combined wave energy gets up there (685 in the water on Saturday morning, July 11th), but it's all messy, lumpy cross-chop. Not what you want on a board. For a beach and reef setup like Sandy Beach, with that much wind and short-period swell (only 7 or 8 seconds), it’s honestly looking more like a kite-surfing session than a paddle-out. The water temperature is sitting at 79°, which is pretty average for the time of year, so that’s not the issue.
The only glimmer of hope comes on Saturday, July 25th. The morning shows a small, clean-ish window. The swell drops right down to 3 ft, but it switches to a proper SSW groundswell with a long 15-second period. That’s the kind of energy that can wrap in nicely. The wind is still a moderate cross-shore from the NE at 16 mph, creating a bit of a cross-chop, but the forecast calls it marginal rather than terrible. Combined energy is still strong at 531, which means there’s some push in the water. For a break that’s exposed to the open ocean, this could be the one session to keep an eye on. It’s a long-range call, so don’t book the day off work yet, but it’s the only true standout in the whole period.
So, the bottom line: if you’re desperate for a paddle, the morning of July 25th is your best bet. The rest of the run is a total blown-out mess. Keep the board in the car and wait for the forecast to change.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Sat morning, min 24°C on Fri afternoon). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 25°C on Tue afternoon, min 24°C on Mon afternoon). Mainly fresh winds. | ||||||||||||||||||||
Fri 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | |||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | NE 7 | NE 7 | ENE 7 | ENE 7 | SSW 16 | ENE 7 | SSW 17 | SSW 14 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 352 | 456 | 420 | 307 | 330 | 542 | 439 | 512 | 397 | 310 | 261 | 240 | 223 | 104 | 108 | 79 | 314 | 111 | 195 | 186 | 248 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 11:48PM0.19m | 1:24PM0.77m | 00:55AM0.18m | 2:10PM0.81m | 1:53AM0.19m | 2:55PM0.82m | 2:47AM0.21m | 3:38PM0.81m | 3:40AM0.23m | 4:19PM0.78m | 4:35AM0.27m | 4:58PM0.72m | 5:33AM0.31m | ||||||||
Low Tide | 8:27PM0.12m | 5:46AM-0.07m | 9:12PM0.08m | 6:39AM-0.08m | 9:53PM0.05m | 7:31AM-0.09m | 10:32PM0.03m | 8:22AM-0.08m | 11:09PM0.02m | 9:12AM-0.05m | 11:45PM0.02m | 10:02AM0.01m | 00:20AM0.02m | 10:55AM0.08m | |||||||
 |  |  | | | | | | | | | | | | |  |  | | | | | |
 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 |
 | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | 7:15 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | 1 |
Temp °C | 24 | 24 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 20 | 21 | 22 | 22 | 21 | 20 | 19 | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 24 | 23 | 24 | 24 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SW 19 | SSW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SW 14 | SW 14 | SW 14 | NE 7 | W 15 | ENE 7 | SSW 16 | ENE 7 | W 14 | SSW 14 | W 14 |
| kJ | 42 | 184 | 221 | 316 | 309 | 376 | 367 | 353 | 287 | 272 | 208 | 191 | 186 | 104 | 221 | 79 | 314 | 111 | 203 | 186 | 144 |
Swell 2 Height (m) Direction Period (s) | SW 21 | S 12 | W 14 | W 13 | W 13 | W 12 | SSE 12 | W 12 | SSE 12 | W 18 | W 18 | W 16 | W 16 | E 7 | SW 13 | W 15 | W 15 | W 14 | SSW 13 | W 14 | SW 16 |
| kJ | 109 | 41 | 63 | 54 | 54 | 27 | 28 | 26 | 27 | 97 | 152 | 190 | 190 | 65 | 164 | 215 | 212 | 203 | 113 | 148 | 125 |
Swell 3 Height (m) Direction Period (s) | W 13 | W 13 | S 12 | S 12 | S 11 | S 13 | W 12 | SSE 12 | W 12 | SSE 11 | SW 18 | SSW 19 | SW 19 | W 15 | N 8 | NNE 8 | SSE 9 | NNE 8 | SSW 17 | NNE 7 | SSW 12 |
| kJ | 29 | 55 | 44 | 25 | 23 | 29 | 26 | 28 | 26 | 25 | 82 | 146 | 94 | 227 | 29 | 67 | 8 | 51 | 195 | 29 | 55 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | NE 7 | — | ENE 7 | ENE 7 | NE 7 | — | ENE 7 | ENE 6 | ENE 7 |
| kJ | 352 | 456 | 420 | 307 | 330 | 542 | 439 | 512 | 397 | 310 | 261 | 240 | 223 | — | 108 | 59 | 176 | — | 125 | 121 | 248 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 59 | 48 | 55 | 59 | 55 | 57 | 57 | 48 | 49 | 50 | 47 | 19 | 20 | 47 | 47 | 47 | 5 | 47 | 49 | 49 | 55 |
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.
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