
Surf Forecasts:
Sandy Beach surf forecast from 19 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 2PM (local time) - 4.5ft (1.4m), 16s period, E swell with 984 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 1.4m 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) | 4.5ft (1.4m) 16s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you – Sandy Beach is going to be a tough one for the next 16 days. The entire forecast window is plagued by a persistent cross-shore wind, mostly from the ENE, and it’s blowing a fresh breeze. That means the surface is going to be lumpy and cross-chop, making for some pretty ordinary conditions. The water temp is sitting at 80°F, which is about average for this time of year, but the onshore energy is just ruining the shape.
We’ve got a blank run for the first week. From Sunday the 19th right through to Friday the 25th of July, every session is rated as poor surf conditions. The wind is relentless, and the swell is messy. For the first few days, the swell is coming from the ENE with a short period of 8 seconds, so it’s weak and choppy. The combined energy is moderate, around 425 to 535, but it’s just not going to be any fun. The kite surfers might have a field day with that wind, but for paddle surfing, it’s a write-off.
Come Saturday the 26th of July, we start to see a shift. The conditions bump up to “marginal” – still not great, but there’s a glimmer of hope. The swell direction swings to the E and the period stretches out to a nice long 16 seconds. That’s proper groundswell energy. The combined energy jumps to 1513, which is strong. The problem is that wind is still hammering it from the NE at 15 to 18 mph, keeping it lumpy. This swell is better suited for a point or a reef break, but at a beach and reef setup like Sandy Beach, that long period will make it break a bit too straight.
The weekend of the 26th and 27th is the best on offer, but it’s only a marginal call. You’ll find waves around 4 ft to 5 ft from the E with that long period, but the cross-shore wind will keep it challenging. The crowd situation here is listed as “often,” so you won’t be alone. If you’re desperate for a paddle, those are the days to try, but don’t expect perfection.
Into the second week, from the 28th of July onward, the swell picks up a bit of size, with heights hitting 7 ft from the ENE on the 28th and 29th. The period drops to 12-13 seconds, so it’s still a solid groundswell, and the combined energy is strong at 1523. But the wind is still the enemy. It’s a fresh cross-shore, so the surface is always lumpy. The forecast is less certain out this far, but it’s not looking promising. By the 30th and 31st, we’re back to poor conditions with the swell dropping off.
The very end of the window, on the 2nd and 3rd of August, we get a slight reduction in wind speed, down to a gentle breeze on the morning of the 2nd, with a 4 ft SSW swell and a very long period of 16 seconds. The combined energy is strong at 1464, and the wind is only cross-on at 9 mph. This is the closest we get to a clean session, but it’s a long way out and the trend has been poor. For now, it’s a maybe.
Overall, Sandy Beach is a hard pass for most of the next 16 days. The swell is there, but the wind is cruel. If you absolutely have to get wet, aim for the morning of the 2nd of August, but keep your expectations low.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Mon morning. Warm (max 26°C on Tue afternoon, min 24°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Warm (max 25°C on Wed morning, min 24°C on Wed morning). Mainly strong winds. | ||||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | |||||||||||||||
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 8 | ENE 8 | ENE 7 | ENE 7 | S 16 | S 15 | S 14 | S 14 | ENE 7 | ENE 7 | SSW 23 | SSW 22 | ENE 7 | ENE 7 | SSW 18 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | SSW 18 | SSW 18 |
Wave Graph | |||||||||||||||||||||
264 | 277 | 261 | 249 | 321 | 267 | 329 | 246 | 219 | 138 | 426 | 363 | 412 | 397 | 464 | 653 | 557 | 540 | 487 | 565 | 547 | |
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-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross |
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 | 1:10PM0.23m | 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 | — | — | 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 | — | — | 1 | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 24 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 22 | 22 | 21 | 22 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 12 | 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 |
93 | 95 | 44 | 142 | 321 | 267 | 329 | 246 | 219 | 138 | 123 | 139 | 412 | 395 | 464 | 249 | 340 | 234 | 391 | 565 | 508 | |
Swell 2 Height (m) Direction Period (s) | NNE 8 | S 18 | S 18 | S 16 | SW 18 | SW 16 | SW 17 | SW 16 | E 13 | S 13 | SSW 23 | S 13 | S 12 | S 11 | S 11 | S 12 | S 12 | S 20 | SSW 16 | E 16 | SSW 18 |
19 | 106 | 97 | 135 | 81 | 69 | 72 | 67 | 121 | 128 | 426 | 157 | 98 | 63 | 56 | 105 | 100 | 299 | 198 | 181 | 547 | |
Swell 3 Height (m) Direction Period (s) | S 19 | W 12 | SW 19 | SW 18 | W 12 | E 12 | E 12 | E 11 | SW 15 | S 11 | S 13 | SSW 22 | SW 16 | SW 16 | S 13 | SSW 16 | S 21 | S 12 | S 12 | S 11 | S 9 |
66 | 25 | 92 | 83 | 11 | 12 | 25 | 39 | 60 | 58 | 87 | 363 | 65 | 127 | 55 | 94 | 231 | 100 | 65 | 59 | 41 | |
Wind waves Height (m) Direction Period (s) | ENE 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 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
264 | 277 | 261 | 249 | 234 | 186 | 176 | 176 | 200 | 132 | 144 | 261 | 385 | 397 | 458 | 653 | 557 | 540 | 487 | 459 | 476 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 48 | 113 | 19 | 16 | 47 | 16 | 18 | 48 | 47 | 47 | 63 | 47 | 57 | 55 | 47 | 55 | 59 | 48 | 47 | 110 | 18 |
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.










