Surf Forecasts:
Sandy Beach surf forecast from 4 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 11AM (local time) - 5ft (1.5m), 11s period, ENE swell with 515 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 1.5m 11s and forecast to arrive on Tuesday (Aug 04) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 15s period and expected on Wednesday (Aug 05) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Tue 4th Aug) | 5ft (1.5m) 11s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s in store for Sandy Beach. Well, I gotta be straight with you – this run of forecasts is a tough one. The whole 16-day window is pretty much a write-off for good paddle surfing. There’s a lot of energy in the water, but the wind is just relentless, blowing cross-shore day after day. It’s going to be messy and lumpy, not the clean lines we’re after.
Right from the start on Tuesday, August 4th, we’ve got a 5ft ENE swell with a modest 11-second period, and that’s already a tough call. The combined energy is moderate (561), but the wind is already a cross-shore 9 mph, making it marginal. It only gets worse from there. The morning of Wednesday the 5th has a 4ft ENE swell, but the wind is up to 16 mph, and the texture is just cross-chop. The vibe is poor.
We run into a real gap here. From Tuesday afternoon all the way through to the end of the window on Wednesday, August 19th, every single session is flagged as "poor surf conditions." That’s nearly two weeks of no-go. The swell comes and goes – we see a 7ft ENE swell on Saturday the 8th and a 6ft swell on Sunday the 9th, but the wind is a fresh 22-25 mph cross-shore, and the sea state is "lumpy cross-chop" or "messy cross-chop." The energy is moderate to strong (603 on Saturday afternoon), but it’s wasted on the wind.
Later in the second week, around Wednesday the 12th, a long-period S swell arrives at 18 seconds and 3ft, with combined energy jumping to 898 (strong). That’s a deep groundswell, but again, the cross-shore wind is 19-22 mph. That kind of long-period swell needs a point break or a reef to really shine, and with this wind, it’s just going to be a lumpy mess at Sandy Beach. The water is sitting at 80°F with a normal anomaly of 0.7°, so that’s about average for this time of year.
Honestly, with this persistent cross-shore wind and the size of the swell hitting 8ft by Saturday the 15th, this setup looks more interesting for kite surfing than paddle surfing. The swell direction is ENE, and the break is exposed, but the wind never lets up.
There’s no standout session here. The whole 16 days is a blank run. For Sandy Beach, this kind of prolonged poor run is pretty normal when the trades lock in. Forecasts can change, but for now, keep the board in the car and wait for a better day.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu morning. Warm (max 26°C on Tue morning, min 24°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun morning. Warm (max 25°C on Fri morning, min 25°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 6 | ENE 8 | ENE 8 | SSW 14 | SSW 14 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 515 | 436 | 358 | 253 | 203 | 68 | 81 | 138 | 107 | 77 | 73 | 148 | 307 | 360 | 392 | 305 | 327 | 375 | 276 | 234 | 294 |
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 | cross | cross | cross-on | cross | cross | cross |
High Tide | 6:26PM0.37m | 9:10AM0.55m | 7:10PM0.29m | 10:22AM0.61m | 8:39PM0.22m | 11:25AM0.67m | 10:36PM0.19m | 12:21PM0.73m | 00:00AM0.20m | 1:10PM0.77m | 1:01AM0.23m | 1:55PM0.79m | 1:52AM0.27m | ||||||||
Low Tide | 2:07PM0.27m | 1:37AM0.03m | 4:33PM0.27m | 2:24AM0.02m | 6:43PM0.21m | 3:25AM0.02m | 7:38PM0.16m | 4:32AM0.00m | 8:16PM0.11m | 5:38AM-0.02m | 8:50PM0.08m | 6:37AM-0.03m | 9:21PM0.06m | ||||||||
 | |  | | | |  | | |  | | | | | |  | |  | | | | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — |
Temp °C | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 27 | 26 | 25 | 24 | 24 | 25 | 25 | 24 | 24 | 23 | 22 | 23 | 23 | 23 | 22 | 23 | 23 | 23 | 24 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | ENE 11 | ENE 11 | ENE 10 | ENE 10 | SSW 15 | ENE 9 | ENE 8 | SSW 14 | SW 14 | ENE 7 | NE 7 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 17 | SSW 12 | S 16 | SSW 15 | SSW 16 | SSW 15 |
| kJ | 515 | 436 | 358 | 253 | 88 | 68 | 45 | 80 | 102 | 21 | 25 | 107 | 113 | 101 | 99 | 159 | 86 | 131 | 133 | 188 | 186 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SW 14 | SSW 14 | SSE 11 | SSE 11 | SSW 14 | SSW 14 | SSW 19 | SW 18 | SSW 18 | SW 18 | SSW 13 | SSW 18 | SSW 12 | SSW 12 | SSW 12 | SE 9 |
| kJ | 46 | 51 | 47 | 38 | 39 | 54 | 81 | 24 | 40 | 77 | 73 | 148 | 162 | 123 | 150 | 96 | 102 | 57 | 47 | 45 | 21 |
Swell 3 Height (m) Direction Period (s) | W 13 | SW 16 | SW 15 | SSE 13 | SSE 12 | SSE 12 | SSE 11 | SSW 10 | NNW 7 | SW 21 | SW 20 | NE 11 | SSE 10 | SSE 10 | SSE 10 | W 12 | SW 16 | SW 16 | SSE 10 | SE 10 | SSW 11 |
| kJ | 30 | 68 | 57 | 56 | 49 | 48 | 25 | 9 | 5 | 115 | 99 | 30 | 18 | 19 | 19 | 25 | 66 | 64 | 19 | 23 | 23 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 9 | ENE 5 | ENE 6 | ENE 8 | ENE 8 | ENE 5 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 |
| kJ | — | — | — | — | 203 | 56 | 74 | 138 | 107 | 39 | 41 | 106 | 307 | 360 | 392 | 305 | 327 | 375 | 276 | 234 | 294 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 16 | 16 | 47 | 16 | 16 | 16 | 16 | 16 | 47 | 48 | 47 | 48 | 48 | 48 | 47 | 55 | 16 | 47 | 47 | 20 |
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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