
Surf Forecasts:
Sandy Beach surf forecast from 16 Jul 2026:
- Most powerful swell: Wednesday 22 Jul, 11PM (local time) - 2.5ft (0.7m), 22s period, SSW swell with 489 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 0.7m 22s and forecast to arrive on Wednesday (Jul 22) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 14s period and expected on Thursday (Jul 16) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Wed 22nd Jul) | 2.5ft (0.7m) 22s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Right, look, I'm gonna be straight with you. This is Sandy Beach (United States), and for the first ten days or so, it's a write-off. The wind is howling from the ENE, smashing straight across the break, and that's creating a horrible lumpy cross-chop. The swell is there, but it's just messy. There's a bit of a long-period groundswell from the SSW on the 16th and 17th, with a period of 16 seconds and combined energy of 384, but it's only 2ft, and the wind just ruins it. The water temp is 79°, which is about average for the time of year, so that's one plus, I guess.
We get a bit of a bump in swell size from the 18th to the 20th, with waves around 5ft to 5ft, but that ENE wind just keeps blowing, and the energy is still getting trashed. The combined energy climbs to 510 on the 20th, but it's all cross-shore chop. This is one of those stretches where you're better off with a kite than a paddleboard, honestly.
Then, from the 21st to the 26th, we get a mix of swells, some S, some E, some SSW, but the story is the same: strong cross-shore wind. The energy gets real strong, hitting 2071 on the 25th afternoon, but the wind is a steady 25 mph Strong breeze. It's just messy.
Now, here's the one real standout, and it's a big one. On Monday the 27th and Tuesday the 28th, the swell is predicted to be massive. We're talking 10ft to 13ft from the ENE with a period of 15 seconds, and the combined energy is off the charts, hitting 6412. The wind and tide are favorable, but the swell is too big for this break. It's an expert-only zone, and even then, it's a beast. The wind is still a fresh to moderate breeze from the NE, so it's not clean, but the sheer power is something else. You'd have to be a lunatic to go out there, but if you are, that's the time.
After that, it drops off sharply. The 29th sees a tiny 2ft swell from the S, and the wind finally drops to a gentle breeze, but the surf is marginal. The 30th has a bit more size, 5ft from the ENE, but the wind is cross-on, and it's still poor. The 31st is back to the same old wind and lumpy chop.
So, to sum it up: the first ten days are a total loss. The only real action is on the 27th and 28th, but it's for expert-level chargers only. It's a long wait for a big, dangerous wave. That's your lot.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Thu morning, min 24°C on Thu night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Tue morning. Warm (max 25°C on Sun afternoon, min 24°C on Sun morning). Mainly fresh winds. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||
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) | SSW 16 | SSW 13 | ENE 6 | ENE 7 | SSW 16 | SSW 14 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 | E 13 | SSW 23 | SSW 22 |
Wave Graph | |||||||||||||||||||||
175 | 113 | 126 | 134 | 196 | 145 | 206 | 245 | 353 | 284 | 243 | 201 | 329 | 321 | 267 | 329 | 307 | 277 | 417 | 426 | 363 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on |
High Tide | 4:58PM0.72m | 5:33AM0.31m | 5:35PM0.64m | 6:37AM0.35m | 6:10PM0.55m | 7:46AM0.40m | 6:42PM0.45m | 8:59AM0.45m | 7:13PM0.37m | 10:08AM0.51m | 7:46PM0.29m | 11:08AM0.55m | 8:50PM0.23m | ||||||||
Low Tide | 10:02AM0.01m | 00:20AM0.02m | 10:55AM0.08m | 00:53AM0.03m | 11:55AM0.16m | 1:26AM0.03m | 1:10PM0.23m | 1:58AM0.03m | 2:57PM0.28m | 2:33AM0.04m | 5:25PM0.28m | 3:12AM0.05m | 7:38PM0.23m | 3:57AM0.05m | |||||||
5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 24 | 24 | 24 | 23 | 24 | 23 | 22 | 21 | 22 | 23 | 23 | 24 | 23 | 24 | 24 | 23 | 24 | 24 | 22 | 24 |
Swell 1 Height (m) Direction Period (s) | W 14 | ENE 6 | SW 14 | W 14 | SSW 16 | SSW 14 | SSW 13 | SSW 14 | SSW 14 | SSW 13 | S 13 | SSW 12 | S 16 | S 16 | S 15 | S 14 | S 14 | ENE 7 | E 13 | E 13 | E 12 |
203 | 66 | 211 | 144 | 196 | 145 | 141 | 160 | 156 | 92 | 85 | 44 | 329 | 321 | 267 | 329 | 307 | 99 | 417 | 219 | 144 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | W 14 | W 14 | SW 16 | W 14 | W 13 | WNW 13 | WNW 13 | W 12 | S 19 | S 18 | S 18 | SW 18 | SW 18 | E 17 | NE 7 | E 15 | S 13 | NNE 7 | SSW 23 | S 13 |
175 | 203 | 148 | 125 | 98 | 90 | 57 | 56 | 28 | 66 | 106 | 97 | 83 | 81 | 89 | 67 | 216 | 277 | 32 | 426 | 157 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 18 | SSW 12 | SSW 12 | NNE 7 | SW 15 | NNE 8 | SSE 9 | NNE 8 | W 12 | NNE 8 | W 11 | SSE 6 | SW 16 | E 7 | E 7 | E 14 | S 13 | S 13 | SSW 22 |
113 | 113 | 60 | 55 | 55 | 18 | 55 | 14 | 8 | 11 | 25 | 24 | 10 | 4 | 69 | 47 | 23 | 257 | 126 | 125 | 363 | |
Wind waves Height (m) Direction Period (s) | NE 7 | — | ENE 6 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | — | NE 7 | — | ENE 7 | ENE 7 | ENE 6 |
96 | — | 126 | 134 | 134 | 144 | 206 | 245 | 353 | 284 | 243 | 201 | 181 | 181 | 148 | — | 86 | — | 117 | 88 | 108 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 55 | 47 | 47 | 48 | 47 | 48 | 55 | 47 | 47 | 47 | 16 | 47 | 19 | 16 | 16 | 47 | 16 | 47 | 49 | 47 |
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.










