
Surf Forecasts:
Sandy Beach surf forecast from 3 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 2AM (local time) - 5ft (1.6m), 12s period, ENE swell with 701 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 12s and forecast to arrive on Tuesday (Aug 04) at 2AM. 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 | 2AM (Tue 4th Aug) | 5ft (1.6m) 12s |
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—this stretch is a real bummer for Sandy Beach. We’ve got a solid 16-day window, but honestly, the surf just isn’t cooperating. The wind is a persistent problem, and most of the time, the conditions are just plain ugly.
We kick off on Sunday, August 2nd, with a 7 ft swell out of the ENE, but don’t get excited. The wind is howling at 25 mph from the same direction, creating a messy cross-chop. The water’s sitting at a warm 81°, which is about average for this time of year, but that’s the only nice thing I can say. The combined swell energy is moderate (865), but it’s all for nothing with that wind. The whole first week is a write-off, with Monday and Tuesday showing similar issues—cross-shore winds and lumpy conditions. Even when the swell drops to 4 ft, the wind is still ruining it.
The only flicker of hope comes on Tuesday, August 4th, in the morning. We get a 5 ft swell with a period of 11 seconds, which is a decent groundswell, and the wind drops to a gentle 9 mph. It’s still cross-shore, but it’s the cleanest we’ll see. The energy is moderate (561), and it’s the highest score of the whole forecast. This is your best shot, but it’s still a marginal call. The waves are likely to be a bit straight with that longer period, so it’s for the better surfers who can work a beach break.
After that, it’s back to the grind. From Wednesday, August 5th, through to the end of the first week, we have a mix of weak swells (down to 1 ft on the 7th) and strong, gusty winds. The break is consistent, but it’s consistently poor.
Heading into the second week, the pattern doesn’t change. We get a brief spike on August 12th with a 3 ft swell from the south, but the period is very long (18 seconds). The energy is strong (918), but the wind is cross-onshore, making it lumpy. That’s a no-go for a beach break—it’ll be too straight and messy. The same goes for the 13th, with a 4 ft swell and 16-second period, energy at 1073, but again, strong cross-onshore wind.
The final few days, from August 14th to the 17th, see a bigger swell of 8 ft to 7 ft from the ENE, but the wind is still a brutal 25 mph cross-shore. At this size, it’s getting into expert territory, and with that wind, it’s just a washing machine. This setup is honestly more interesting for kite surfing than a paddle session.
So, the bottom line: there’s no standout here. The best you’ll get is that Tuesday morning window, but it’s a gamble. For the rest, you’re better off waiting for the next forecast. This is a blank run, and for Sandy Beach, that’s not unusual when the trade winds lock in.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon morning, min 25°C on Sun afternoon). Winds decreasing (fresh winds from the ENE on Sun afternoon, light winds from the ENE by Tue morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Wed afternoon, min 25°C on Wed night). Mainly fresh winds. | |||||||||||||||||||
Sun 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
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 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | SSE 11 | SSW 14 | SSW 14 | ENE 6 | ENE 7 | ENE 7 | NE 7 |
Wave Graph | ||||||||||||||||||||
606 | 578 | 353 | 277 | 701 | 515 | 359 | 358 | 258 | 188 | 190 | 181 | 122 | 40 | 77 | 73 | 176 | 198 | 186 | 152 | |
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-on | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross |
High Tide | 5:22PM0.53m | 6:48AM0.43m | 5:53PM0.45m | 7:57AM0.48m | 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 | |||||||
Low Tide | 00:29AM0.04m | 12:27PM0.23m | 00:59AM0.04m | 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 | ||||||||
— | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | |
7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 21 | 22 | 24 | 25 | 24 | 27 | 26 | 25 | 26 | 26 | 24 | 25 | 24 | 24 | 23 | 24 | 24 | 24 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | E 14 | E 13 | E 13 | E 12 | SSW 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | SSW 14 | SSW 14 | ENE 8 | ENE 7 | ENE 7 | SSW 14 | SSW 14 | SSW 13 | E 7 |
192 | 125 | 84 | 108 | 56 | 515 | 359 | 358 | 258 | 188 | 190 | 81 | 80 | 32 | 21 | 32 | 108 | 115 | 102 | 152 | |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SW 12 | SSW 13 | SSW 12 | SSE 9 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 15 | SW 14 | SSE 11 | S 11 | SW 14 | SSW 14 | SSW 14 | SSW 19 | SW 18 | SSW 18 | SSW 13 |
67 | 40 | 53 | 50 | 9 | 46 | 51 | 47 | 47 | 88 | 54 | 25 | 22 | 102 | 77 | 73 | 148 | 164 | 123 | 99 | |
Swell 3 Height (m) Direction Period (s) | N 9 | SSW 13 | SW 13 | SW 13 | W 14 | W 13 | SW 16 | SW 15 | SSE 13 | SSW 11 | SSE 12 | SSW 9 | SSW 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SW 18 |
14 | 58 | 42 | 41 | 16 | 30 | 68 | 57 | 56 | 39 | 48 | 17 | 9 | 40 | 38 | 38 | 38 | 18 | 18 | 150 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | — | — | — | — | — | — | ENE 8 | ENE 8 | ENE 5 | ENE 5 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | NE 7 |
606 | 578 | 353 | 277 | 701 | — | — | — | — | — | — | 181 | 122 | 25 | 20 | 31 | 176 | 198 | 186 | 149 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 57 | 50 | 16 | 55 | 16 | 42 | 5 | 16 | 16 | 16 | 47 | 16 | 18 | 18 | 47 | 48 | 47 | 48 | 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.











