Surf Forecasts:
Sandy Beach surf forecast from 24 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 11PM (local time) - 10ft (3.0m), 13s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 11PM (local time) - 10ft (3.0m), 13s period, ENE swell with 2,752 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 11PM (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 Tuesday (Jul 28) at 11PM. The primary swell is predicted to be 3.0m and 13s period with a secondary swell of 0.6m and 14s. Another secondary swell of 0.6m and 9s is also forecast. The wind is predicted to be cross-offshore 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 Tuesday (Jul 28) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Monday (Jul 27) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 28th Jul) | 10ft (3.0m) 13s |
| Best Surf | 11PM (Tue 28th Jul) | 10ft (3.0m) 13s |
| Most Powerful | 11PM (Tue 28th Jul) | 10ft (3.0m) 13s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what's in store. Honestly, this whole stretch is a tough nut to crack. For the better part of the first week and a half, we've got strong cross-winds out of the ENE that are just wrecking the surface. It ain't pretty.
We're focusing on Sandy Beach. The water temp is about 27°, which is normal for this time of year.
The first few days are a total loss. It starts Friday, July 24th, with a 7ft swell from the ENE, but the wind is a brutal 25 mph cross-shore. The wave energy is pumping (1049), but the report says "poor surf conditions," and that's the truth. This same story carries through Saturday the 26th.
There's a tiny window Tuesday afternoon, July 28th. We get a 8ft swell from the east (energy at 2165) and the wind shifts to a cross-offshore from the NNE. For the first time, the conditions are called "clean." It's still only marginal, but it's the best we've seen.
The one and only real standout is the morning of Wednesday, July 29th. This is the one to circle. We've got a solid 10ft swell from the NE, with an 11-second period. The key is the wind: a light 6 mph from the WNW, which is offshore for Sandy Beach. The combined energy is huge at 2744. The forecast says it's "wind and tide favorable." But here's the thing: that 10ft swell is too big for this break. This is for experts only. You need to be on your game.
After that, it's a rough ride. The wind goes back onshore and cross-shore, the swell drops. From Thursday, July 30th, all the way through to Saturday, August 8th, it's a long, empty run of poor to marginal conditions. There are some long-period swells from the south, but the onshore breeze kills any chance of a clean wave. The energy levels fall off a cliff.
So, your best bet is that one morning on July 29th for the big dogs. The rest is a waiting game.
- Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Fri morning, min 24°C on Sat night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Mon night. Warm (max 26°C on Tue afternoon, min 24°C on Mon morning). Winds decreasing (fresh winds from the NE on Mon afternoon, light winds from the WNW by Wed morning). | ||||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | |||||||||||||||
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 7 | ENE 7 | ENE 8 | SSW 18 | ENE 8 | SSW 16 | E 14 | E 15 | E 14 | E 13 | ENE 13 | E 13 | E 13 | ENE 12 | NE 11 | NE 10 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 484 | 428 | 415 | 392 | 572 | 547 | 469 | 499 | 706 | 764 | 680 | 1872 | 1520 | 1755 | 2555 | 2544 | 998 | 460 | 449 | 316 | 266 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | off | cross-on | on | cross-on | cross-on | cross-on |
High Tide | 12:42PM0.62m | 11:56PM0.19m | 1:20PM0.64m | 00:50AM0.19m | 1:55PM0.66m | 1:32AM0.20m | 2:28PM0.68m | 2:09AM0.22m | 2:58PM0.69m | 2:46AM0.24m | 3:28PM0.69m | 3:26AM0.26m | 3:57PM0.68m | 4:08AM0.30m | |||||||
Low Tide | 8:50PM0.15m | 5:38AM0.03m | 9:14PM0.12m | 6:24AM0.02m | 9:38PM0.11m | 7:06AM0.01m | 10:01PM0.09m | 7:44AM-0.00m | 10:25PM0.09m | 8:21AM0.00m | 10:49PM0.08m | 8:58AM0.02m | 11:13PM0.07m | ||||||||
 | |  | | |  |  | | | | |  |  | | | | | | | | | |
 | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — |
 | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 3 | 1 | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 21 | 21 | 21 | 22 | 22 | 21 | 22 | 22 | 22 | 23 | 23 | 23 | 25 | 25 | 24 | 29 | 29 | 28 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | E 14 | E 15 | E 14 | E 13 | SSW 14 | E 13 | E 13 | ENE 12 | NE 11 | NE 10 | ENE 8 | ENE 8 | ENE 8 | S 13 |
| kJ | 329 | 340 | 298 | 391 | 572 | 547 | 469 | 499 | 706 | 764 | 680 | 213 | 1520 | 1755 | 2555 | 2544 | 998 | 460 | 449 | 316 | 166 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | S 20 | SSW 16 | S 11 | E 15 | E 15 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SE 11 | SSW 14 | S 14 | SSW 14 | S 14 | S 14 | S 14 | S 14 | S 13 | SSW 16 |
| kJ | 143 | 102 | 296 | 223 | 61 | 72 | 348 | 341 | 333 | 228 | 222 | 4 | 143 | 179 | 192 | 200 | 195 | 184 | 181 | 173 | 177 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | S 21 | S 12 | S 11 | E 13 | E 12 | S 11 | S 11 | SE 11 | S 11 | S 10 | S 18 | SSE 10 | — | SW 21 | SW 21 | SSW 20 | SW 19 | SW 18 | SW 18 | SSE 6 |
| kJ | 93 | 231 | 100 | 63 | 54 | 47 | 20 | 20 | 5 | 9 | 8 | 6 | 10 | — | 18 | 17 | 37 | 58 | 154 | 152 | 6 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | NE 7 | ENE 13 | NNE 9 | NE 9 | ENE 12 | — | SW 3 | S 4 | — | — | ENE 8 |
| kJ | 484 | 428 | 415 | 392 | 414 | 522 | 382 | 397 | 286 | 272 | 268 | 1872 | 172 | 231 | 2094 | — | 3 | 6 | — | — | 266 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 111 | 111 | 47 | 55 | 57 | 47 | 47 | 48 | 47 | 20 | 110 | 14 | 18 | 150 | 5 | 0 | 3 | 30 | 47 | 47 | 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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