Surf Forecasts:
Sandy Beach surf forecast from 26 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 17s period and expected on Saturday (Aug 29) 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
Alright, folks, Rusty here. Let's cut to the chase. The next week-plus at Sandy Beach is a total loss. ENE winds, onshore and cross-shore, are going to keep the ocean all lumpy and chopped up. We're talking moderate wave energy (600-700 range) with heights bouncing from 2ft to 6ft. It's all junk. Don't even bother looking at it until the 7th.
That's the big gap. From now until Monday, September 7th, there is zero quality surf. Over a week of nothing. It's a drought. You might as well go fishing or fix your board.
Then, on Monday afternoon, September 7th, the switch flips. The wind turns offshore from the NW, and it goes glassy. Clean. The swell comes in at 4ft from the SSW with a 14-second period. That's real, strong groundswell, and the combined energy jumps up to 1179. This is the day. The standout of the whole forecast. Sandy Beach is a beach and reef setup, so the long period might make it a bit walled-up, but that offshore wind will make it absolutely groomed. This is your one chance in the next two weeks to get a proper session.
The following days (the 8th and 9th) will have more size, up to 6ft, but the wind goes bad again and it all falls apart. So, it's a short window. Be there on the 7th.
Water temps are just about normal for this time of year. Nothing to write home about.
So, there you have it. A whole lot of nothing, then one perfect afternoon on the 7th. Don't miss it.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 25°C on Wed morning). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Mon morning. Warm (max 26°C on Sat night, min 25°C on Sat morning). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | E 7 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | SSW 15 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | NE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 222 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 229 | 219 | 285 | 244 | 204 | 248 | 199 | 198 | 235 | 374 | 368 | 330 | 281 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross |
High Tide | 2:25PM0.67m | 2:30AM0.34m | 2:53PM0.66m | 3:07AM0.39m | 3:21PM0.62m | 3:47AM0.44m | 3:48PM0.58m | 4:31AM0.49m | 4:17PM0.51m | 5:19AM0.53m | 4:46PM0.43m | 6:14AM0.56m | 5:18PM0.36m | ||||||||
Low Tide | 9:29PM0.09m | 8:15AM0.04m | 9:49PM0.07m | 8:57AM0.06m | 10:10PM0.06m | 9:43AM0.10m | 10:32PM0.05m | 10:34AM0.14m | 10:56PM0.04m | 11:35AM0.19m | 11:23PM0.04m | 12:53PM0.23m | 11:56PM0.04m | ||||||||
 | |  |  | |  | | | | | | | | | |  | | | | | | |
 | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — |
 | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:46 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 23 | 21 | 22 | 22 | 23 | 24 | 23 | 23 | 22 | 21 | 22 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 | E 13 | E 12 | S 12 | SSW 16 | S 12 | SSW 15 | SSW 15 | SSW 14 | S 10 | ENE 8 | S 18 | NE 8 |
| kJ | 215 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 229 | 126 | 110 | 102 | 171 | 100 | 199 | 144 | 136 | 50 | 368 | 230 | 281 |
Swell 2 Height (m) Direction Period (s) | S 18 | SSW 13 | SSW 13 | N 8 | SSW 12 | NNE 7 | E 16 | E 15 | E 14 | S 13 | S 13 | E 12 | E 11 | SSW 16 | S 11 | S 11 | S 11 | S 19 | SSW 18 | S 12 | S 16 |
| kJ | 165 | 135 | 137 | 6 | 46 | 10 | 78 | 109 | 146 | 85 | 89 | 106 | 65 | 162 | 59 | 82 | 57 | 192 | 249 | 75 | 267 |
Swell 3 Height (m) Direction Period (s) | SSE 12 | W 10 | SSW 16 | W 9 | W 10 | E 17 | SSW 11 | SSW 19 | SW 19 | S 13 | S 12 | SSW 17 | SSW 12 | ENE 11 | ENE 10 | ENE 10 | SSW 19 | SW 14 | S 10 | SW 14 | SSE 10 |
| kJ | 14 | 8 | 50 | 7 | 7 | 24 | 22 | 36 | 56 | 89 | 75 | 186 | 46 | 40 | 35 | 32 | 122 | 54 | 49 | 51 | 34 |
Wind waves Height (m) Direction Period (s) | E 7 | E 6 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | — | ENE 8 | — |
| kJ | 222 | 188 | 206 | 135 | 172 | 135 | 176 | 165 | 155 | 219 | 285 | 244 | 204 | 248 | 180 | 198 | 235 | 374 | — | 330 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 55 | 48 | 55 | 47 | 48 | 47 | 49 | 59 | 47 | 48 | 50 | 47 | 48 | 55 | 47 | 48 | 110 | 16 | 16 | 47 | 16 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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