Surf Forecasts:
Sandy Beach surf forecast from 22 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.0m), 17s period, S swell with 594 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 1.0m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Saturday (Aug 22) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, this is Rusty talkin’. Let’s get real about Sandy Beach.
Right off the bat, I gotta be straight with you: the next week and a half is a write-off. From Saturday the 22nd all the way through to Sunday the 30th, it’s a total mess. Strong cross-shore wind from the ENE, blowing 25 to 28 mph, is just tearing the surface apart. Wave heights are bouncing around between 5 ft and 7 ft, but with that wind and short, weak period of 6 to 7 seconds, the energy is all chop and no shape. The water temp is about average for this time of year, so nothing weird there. You’d be better off with a kiteboard if you’re itching for a thrill, because this is not paddle-surfable.
There’s a big gap with no real recommendations until we hit the end of the month. The first glimmer of something decent pops up on Monday the 31st. We’ve got a 6 ft to 7 ft swell from the ENE, and the period finally stretches to 11 seconds. The combined energy jumps to 1010, which is moderate. The wind is still a fresh cross-shore, so it’s lumpy, but the tide might line up. It’s marginal, but it’s the first sign of life.
Then, the standout. Mark your calendar for Wednesday the 2nd of September. The wind drops out completely. We’re talkin’ glassy conditions, with a light breeze from the north switching to dead calm by afternoon. The swell is a clean 3 ft from the south, with a long 16-17 second period. That’s proper groundswell energy, and it’ll wrap into this beach and reef setup with some real push. The combined energy is a solid 683 to 736, which is moderate. This is the best on offer, no question. It’s a bit small, but with that glassy surface and long lines, Sandy Beach will be clean and fun. Just keep in mind, with the long period, it might break a little straight at the beach, but it’ll be worth it.
The day before, on Tuesday the 1st, is also worth a look. A 3 ft south swell with a 19-second period, and a moderate cross-offshore breeze from the north. It’ll be clean, but that swell is tiny.
After that, it gets messy again. Thursday the 3rd through Sunday the 6th sees the wind pick back up, and the swell turns short and choppy again. It’s a short window of goodness, so if you can, get out there on that Wednesday.
Rusty out.
Short Range ForecastSome drizzle, heaviest during Mon morning. Warm (max 27°C on Fri night, min 25°C on Sat morning). Winds increasing (moderate winds from the E on Fri night, strong winds from the ENE by Sun afternoon). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Warm (max 26°C on Mon night, min 25°C on Tue night). Mainly fresh winds. | ||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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) | SSW 16 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | SSW 14 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | S 18 | S 19 | S 17 | S 16 | S 16 |
Wave Graph | |||||||||||||||||||
322 | 198 | 286 | 478 | 316 | 268 | 240 | 188 | 163 | 197 | 269 | 293 | 214 | 233 | 307 | 351 | 594 | 427 | 482 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-on |
High Tide | 10:59PM0.20m | 12:10PM0.60m | 00:02AM0.21m | 12:51PM0.62m | 00:45AM0.24m | 1:26PM0.65m | 1:20AM0.27m | 1:56PM0.66m | 1:55AM0.30m | 2:25PM0.67m | 2:30AM0.34m | 2:53PM0.66m | 3:07AM0.39m | ||||||
Low Tide | 4:20AM0.10m | 8:09PM0.14m | 5:23AM0.08m | 8:29PM0.12m | 6:13AM0.06m | 8:49PM0.11m | 6:56AM0.04m | 9:09PM0.10m | 7:36AM0.04m | 9:29PM0.09m | 8:15AM0.04m | 9:49PM0.07m | |||||||
— | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:55 | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | |
mm | — | — | — | — | — | — | — | 1 | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 27 | 24 | 24 | 22 | 22 | 21 | 25 | 25 | 25 | 25 | 25 | 24 | 23 | 21 | 21 | 22 | 23 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | NE 7 | SW 16 | SW 16 | SSW 16 | S 13 | SSW 15 | SW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 |
65 | 261 | 251 | 212 | 90 | 191 | 100 | 168 | 156 | 127 | 85 | 142 | 121 | 215 | 307 | 351 | 594 | 427 | 482 | |
Swell 2 Height (m) Direction Period (s) | E 6 | W 10 | W 10 | S 14 | SW 15 | SE 13 | SSE 13 | SSE 12 | E 8 | SSE 7 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | E 18 |
59 | 50 | 53 | 104 | 116 | 44 | 66 | 50 | 51 | 16 | 146 | 81 | 81 | 165 | 135 | 137 | 79 | 46 | 57 | |
Swell 3 Height (m) Direction Period (s) | SSW 16 | S 12 | S 12 | WNW 10 | SSW 15 | WNW 10 | E 9 | SSW 18 | SSE 7 | SSE 12 | SSE 12 | SSE 7 | SSW 18 | SSE 12 | SSE 12 | SSW 16 | NNE 8 | NNE 8 | NNE 7 |
322 | 47 | 47 | 34 | 76 | 19 | 41 | 62 | 20 | 46 | 46 | 9 | 109 | 27 | 14 | 50 | 7 | 13 | 10 | |
Wind waves Height (m) Direction Period (s) | — | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 6 | ENE 6 | E 6 | ENE 6 | E 6 |
— | 198 | 286 | 478 | 316 | 268 | 240 | 188 | 163 | 197 | 269 | 293 | 214 | 233 | 165 | 115 | 112 | 108 | 101 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 47 | 55 | 57 | 55 | 59 | 63 | 55 | 55 | 47 | 19 | 48 | 55 | 47 | 49 | 48 | 18 | 47 | 47 | 20 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











