Surf Forecasts:
Sandy Beach surf forecast from 9 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 11PM (local time) - 7.5ft (2.3m), 8s period, ENE swell with 607 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 2.3m 8s and forecast to arrive on Sunday (Jul 12) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 17s period and expected on Sunday (Jul 12) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sun 12th Jul) | 7.5ft (2.3m) 8s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
G’day, I’m Rusty. Lookin’ at the next 16 days for Sandy Beach, it’s a rough patch. The wind is stuck blowing from the ENE, fresh to strong, and it’s almost always cross-shore, which means the surface is gonna be lumpy and messy. Water temp is 79°, so about average for the time of year.
From Thursday the 9th right through to Monday the 20th, it’s a total blank. Swell runs 5ft to 7ft, but it’s short-period windswell (7-8 seconds) and the energy is moderate (271 to 778). The wind never lets up, so it’s just cross-chop. Not worth paddling out – if you’ve got a kite, this might be more your scene.
The first real chance shows up on Tuesday the 21st. Swell drops to 4ft, but the period jumps to 16 seconds – that’s proper groundswell. The combined energy is strong at 1251. The wind is still cross-shore from the ENE at 35 km/h, so it’s not clean, but it’s listed as “marginal” rather than “poor.” That’s your best shot in the whole window. Swell direction is east, a bit off from the optimum ESE, but the long period means the waves will have some shape. Just remember, with that long period, it might break a bit too straight across the beach. If you’re intermediate, it’s worth a look, but don’t expect perfection.
After that, Wednesday the 22nd and Thursday the 23rd see the swell drop to 2ft-3ft, with period dropping to 13-14 seconds. Energy is moderate (269-700), but wind is still cross-shore, so it’s back to poor. Friday the 24th is flat with a tiny 4ft, 6-second windswell, but the wind eases a bit to 20 km/h – still not enough to save it.
So, the standout is Tuesday the 21st. That’s the only day with a pulse of real groundswell, even if the wind is a letdown. Crowds at Sandy Beach are often there, so you might have company. For the rest, it’s a long gap of poor surf. Forecasts can change, so keep an eye on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Thu morning, min 24°C on Thu morning). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sun afternoon, min 24°C on Sun morning). Mainly strong winds. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 403 | 411 | 349 | 344 | 310 | 336 | 432 | 359 | 349 | 405 | 459 | 568 | 464 | 368 | 310 | 310 | 302 | 294 | 271 | 229 | 358 |
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-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on |
High Tide | 11:46AM0.64m | 10:28PM0.22m | 12:36PM0.72m | 11:48PM0.19m | 1:24PM0.77m | 00:55AM0.18m | 2:10PM0.81m | 1:53AM0.19m | 2:55PM0.82m | 2:47AM0.21m | 3:38PM0.81m | 3:40AM0.23m | 4:19PM0.78m | 4:35AM0.27m | |||||||
Low Tide | 7:30PM0.18m | 4:54AM-0.05m | 8:27PM0.12m | 5:46AM-0.07m | 9:12PM0.08m | 6:39AM-0.08m | 9:53PM0.05m | 7:31AM-0.09m | 10:32PM0.03m | 8:22AM-0.08m | 11:09PM0.02m | 9:12AM-0.05m | 11:45PM0.02m | ||||||||
 | |  | | | | | | | | | | |  | | | | | | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 24 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 25 |
Feels °C | 23 | 21 | 20 | 21 | 21 | 21 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 22 | 21 | 23 | 23 | 21 | 23 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 12 | SSW 11 | SW 19 | SSW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SW 14 | SW 14 | SW 14 | W 15 | W 15 | W 15 | SW 16 |
| kJ | 112 | 110 | 75 | 71 | 42 | 184 | 221 | 316 | 309 | 376 | 367 | 353 | 287 | 272 | 208 | 191 | 186 | 227 | 221 | 215 | 251 |
Swell 2 Height (m) Direction Period (s) | S 16 | W 14 | W 13 | W 13 | SW 21 | S 12 | W 14 | W 13 | W 13 | S 11 | SSE 12 | W 12 | SSE 12 | W 18 | W 18 | W 16 | W 16 | SSW 13 | SW 13 | SSW 14 | W 15 |
| kJ | 21 | 15 | 13 | 13 | 109 | 42 | 63 | 54 | 54 | 23 | 28 | 26 | 27 | 97 | 152 | 185 | 188 | 111 | 164 | 178 | 215 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SSE 8 | W 16 | SSW 21 | W 13 | W 13 | S 12 | S 12 | S 11 | W 12 | W 12 | SSE 12 | W 12 | SSE 11 | SW 18 | SSW 19 | SW 19 | SSW 17 | SW 18 | SSW 18 | SSE 9 |
| kJ | 2 | 6 | 20 | 45 | 29 | 55 | 44 | 25 | 22 | 27 | 26 | 28 | 26 | 25 | 82 | 146 | 94 | 197 | 152 | 209 | 7 |
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 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 403 | 411 | 349 | 344 | 310 | 336 | 432 | 359 | 349 | 405 | 459 | 568 | 464 | 368 | 310 | 310 | 302 | 294 | 271 | 229 | 358 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 49 | 61 | 63 | 47 | 57 | 48 | 57 | 55 | 47 | 55 | 63 | 48 | 48 | 49 | 47 | 47 | 55 | 47 | 47 | 55 | 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.
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