Surf Forecasts:
Sandy Beach surf forecast from 20 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 2PM (local time) - 5ft (1.6m), 16s period, E swell with 1,285 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 1.6m 16s and forecast to arrive on Sunday (Jul 26) 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 0.4m 18s period and expected on Monday (Jul 20) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sun 26th Jul) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, folks, let's talk about Sandy Beach. It's gonna be a rough few weeks, so don't get your hopes up. The water's about 80°F, which is normal for this time of year.
Right now, the pattern is a mess. We've got a solid push of easterly swell, but it's getting hammered by a strong cross-shore wind that's just wrecking the surface. The wave energy is moderate to strong, but with that wind, it's a lumpy, cross-chop mess. Honestly, for the first week, from Sunday the 19th all the way through to Friday the 1st of August, it's just not happening. The wind is too strong and too cross-shore, making for a frustrating paddle. It's looking more like a kite day than a surf day.
We do see a bit of a shift around Tuesday the 28th of July. The swell is still solid, about 8ft from the ENE, and the wind finally drops to a moderate breeze from the NNE, giving us a cross-offshore. The wave energy is very strong, and the report says "clean". That's the best window we've got. The swell is a bit on the bigger side though, so it's more for the experienced crew. The period is a fairly long 13 seconds, which should bring some good energy, but it's a groundswell, so it might run a bit straight on a beach break. Still, this is the standout.
The end of the week on the 29th and 30th stays marginal. The wind is lighter, and it's clean, but the swell drops off. The 29th has a clean 6ft swell from the ENE with a cross-offshore breeze, which is a solid option for intermediates. The 30th is lighter again, at 5ft, but the wind switches to a light cross-onshore, so it's not as clean.
After that, from the 31st of July into the first week of August, it's back to the same old story: stronger wind, lumpy chop, and poor conditions. The swell is there, but the wind kills it.
So, to sum it up: the best bet is the morning of the 28th of July, with a solid 8ft ENE swell and clean conditions. The morning of the 29th is a good second option for a slightly smaller, cleaner wave. Everything else is a write-off, unless you're a kite surfer on a windy day.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon morning. Warm (max 25°C on Sun afternoon, min 24°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Wed afternoon, min 24°C on Wed night). Mainly strong winds. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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 8 | E 8 | ENE 8 | S 16 | S 15 | S 14 | S 14 | ENE 7 | ENE 7 | SSW 23 | SSW 22 | SSW 20 | ENE 7 | SSW 18 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | SSW 18 | E 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 277 | 221 | 199 | 321 | 339 | 329 | 246 | 227 | 138 | 426 | 363 | 412 | 395 | 464 | 529 | 637 | 689 | 459 | 572 | 732 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross-on |
High Tide | 6:42PM0.45m | 8:59AM0.45m | 7:13PM0.37m | 10:08AM0.51m | 7:46PM0.29m | 11:08AM0.55m | 8:50PM0.23m | 11:59AM0.59m | 10:38PM0.19m | 12:42PM0.62m | 11:56PM0.19m | 1:20PM0.64m | 00:50AM0.19m | |||||||
Low Tide | 1:58AM0.03m | 2:57PM0.28m | 2:33AM0.04m | 5:25PM0.28m | 3:12AM0.05m | 7:38PM0.23m | 3:57AM0.05m | 8:24PM0.18m | 8:50PM0.15m | 5:38AM0.03m | 9:14PM0.12m | |||||||||
 |  |  | |  | | | | | | | | | | | | | | | | |
 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — |
 | 7:14 | — | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 22 | 22 | 25 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 22 | 21 | 21 | 21 | 22 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | S 12 | NNE 8 | S 14 | S 16 | S 15 | S 14 | S 14 | S 13 | E 12 | E 11 | E 12 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | E 16 |
| kJ | 73 | 44 | 142 | 321 | 339 | 329 | 246 | 219 | 138 | 123 | 139 | 412 | 395 | 464 | 329 | 340 | 232 | 391 | 572 | 732 |
Swell 2 Height (m) Direction Period (s) | S 18 | SSW 12 | S 16 | SW 18 | SW 16 | SW 17 | SW 16 | E 13 | S 13 | SSW 23 | S 13 | S 12 | S 11 | E 11 | S 12 | S 12 | S 20 | SSW 16 | E 15 | SSW 18 |
| kJ | 106 | 44 | 135 | 81 | 69 | 72 | 67 | 121 | 128 | 426 | 157 | 99 | 93 | 57 | 105 | 69 | 299 | 198 | 153 | 547 |
Swell 3 Height (m) Direction Period (s) | W 12 | S 18 | SW 18 | W 12 | E 12 | E 12 | E 11 | SW 15 | S 11 | S 13 | SSW 22 | SSW 16 | SW 16 | S 11 | SSW 15 | S 21 | S 12 | E 16 | S 11 | S 11 |
| kJ | 25 | 97 | 83 | 11 | 12 | 25 | 40 | 60 | 56 | 125 | 363 | 99 | 127 | 56 | 89 | 231 | 69 | 125 | 61 | 21 |
Wind waves Height (m) Direction Period (s) | ENE 8 | E 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 277 | 221 | 199 | 234 | 191 | 153 | 181 | 227 | 132 | 144 | 240 | 307 | 350 | 444 | 529 | 637 | 689 | 459 | 425 | 522 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 114 | 16 | 16 | 47 | 18 | 47 | 47 | 48 | 48 | 55 | 47 | 55 | 110 | 55 | 57 | 111 | 48 | 47 | 110 | 47 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sandy Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest