Surf Forecasts:
Sandy Beach surf forecast from 23 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.1m), 17s period, S swell with 716 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 1.1m 17s and forecast to arrive on Thursday (Aug 27) 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 10s period and expected on Saturday (Aug 22) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 3.5ft (1.1m) 17s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Right, I’ve had a look at what’s on offer for Sandy Beach and I’ll be straight with you – it’s a tough run. The whole 16-day window is looking pretty grim, so let’s get into it.
The pattern is dominated by a persistent, strong cross-shore wind from the ENE, blowing at 19 to 25 mph, which is just trashing any chance of clean surf. The swell is mostly short-period windswell from the ENE, around 5ft to 7ft, but with that wind, it’s just a messy, lumpy cross-chop. There’s really no standout session here. The first few days, from the 22nd of August right through to the 31st, are all rated as poor surf conditions. The combined wave energy fluctuates, but it’s all just ugly, with values like 349 and 598, which is moderate energy but completely ruined by the wind.
Now, there is a flicker of hope late in the run. On the 2nd of September, the wind drops to a gentle breeze from the NE at 9 mph, still cross-shore, but much lighter. The surf is a small 3ft south swell with a long period of 16 seconds, which is a proper groundswell. The energy is high at 771, but it’s a small, long-period swell. This is a point break or reef sort of wave, not ideal for a beach break like Sandy Beach, but it’s the only time the conditions get close to being surfable. The next morning, the 3rd, the wind is back up and ruining it. So, if you’re desperate, that Wednesday morning, the 2nd of September, is your best bet, but it’s marginal at best.
Honestly, for the whole 16 days, there is no true standout. The persistent onshore wind and short-period junk mean the setup looks more interesting for kite surfing than paddle surfing. It’s a blank run for the area, and it doesn’t look like changing anytime soon.
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Sun morning, min 25°C on Sat night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Fri morning, min 25°C on Tue night). Mainly strong winds. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | E 7 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | ENE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 383 | 317 | 397 | 277 | 254 | 254 | 225 | 404 | 310 | 247 | 226 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 247 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 00:02AM0.21m | 12:51PM0.62m | 00:45AM0.24m | 1:26PM0.65m | 1:20AM0.27m | 1:56PM0.66m | 1:55AM0.30m | 2:25PM0.67m | 2:30AM0.34m | 2:53PM0.66m | 3:07AM0.39m | 3:21PM0.62m | 3:47AM0.44m | ||||||
Low Tide | 8:09PM0.14m | 5:23AM0.08m | 8:29PM0.12m | 6:13AM0.06m | 8:49PM0.11m | 6:56AM0.04m | 9:09PM0.10m | 7:36AM0.04m | 9:29PM0.09m | 8:15AM0.04m | 9:49PM0.07m | 8:57AM0.06m | 10:10PM0.06m | ||||||
 |  |  |  | | | | | | | | | | | | | | | | |
 | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — |
 | 6:54 | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 |
Feels °C | 23 | 24 | 24 | 23 | 24 | 25 | 25 | 24 | 23 | 22 | 21 | 22 | 22 | 23 | 22 | 23 | 24 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SW 15 | SSW 15 | SW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 |
| kJ | 212 | 116 | 191 | 100 | 166 | 156 | 127 | 85 | 142 | 121 | 215 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 173 |
Swell 2 Height (m) Direction Period (s) | SSE 12 | S 13 | SSE 13 | SSE 13 | SSE 12 | SSE 8 | SSE 7 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | NNE 8 | S 12 | NNE 8 | E 15 | E 14 | E 13 |
| kJ | 51 | 90 | 35 | 56 | 50 | 23 | 20 | 146 | 81 | 81 | 165 | 135 | 137 | 7 | 72 | 19 | 69 | 99 | 128 |
Swell 3 Height (m) Direction Period (s) | WNW 10 | SSW 15 | S 11 | SSW 15 | SSW 18 | SSE 12 | SSE 12 | SSE 12 | SSE 10 | SSW 18 | SSE 12 | SSE 12 | SSW 16 | W 9 | NNE 8 | E 15 | NNE 7 | SSW 19 | SW 19 |
| kJ | 34 | 76 | 22 | 71 | 62 | 47 | 46 | 29 | 35 | 109 | 14 | 14 | 50 | 7 | 13 | 17 | 10 | 36 | 56 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | E 7 | ENE 6 | E 6 | ENE 6 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 7 |
| kJ | 383 | 317 | 397 | 277 | 254 | 254 | 225 | 404 | 310 | 247 | 226 | 165 | 182 | 104 | 114 | 122 | 119 | 156 | 247 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 57 | 55 | 55 | 57 | 55 | 55 | 47 | 48 | 55 | 55 | 47 | 49 | 47 | 47 | 47 | 47 | 47 | 47 | 110 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.
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