Surf Forecasts:
Sandy Beach surf forecast from 4 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 2AM (local time) - 5.5ft (1.7m), 12s period, ENE swell with 735 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 1.7m 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) | 5.5ft (1.7m) 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 outlook for the next 16 days is a tough one to write. The truth is, there’s not a single decent session on the cards for Sandy Beach. We’ve got a long, flat run of poor conditions ahead, so let’s break it down.
The whole stretch from the 4th of August right through to the 19th is a write-off. The wind is a constant problem, locked in from the ENE, blowing at 12 mph to 28 mph, and it’s nearly always cross, cross-on, or just plain messy. What swell does show up is mostly short-period ENE windswell, and even when it’s over 5 ft, the wind chops it up so bad it’s not worth the paddle out.
The combined swell energy is all over the place, from weak readings of 166 (moderate energy) up to strong ones like 978 (strong to very strong wave energy), but none of that energy translates into any quality. The wave comment is a broken record: “poor surf conditions” every single time. The water temp is about average for this time of year, but that’s little consolation when you can’t get a clean wave.
There’s a couple of days in the second week, around the 14th and 15th of August, where the swell pushes over 8 ft, but with the wind still howling 22-28 mph cross and cross-on, that’s expert-only, messy, and honestly more interesting for kite surfing than paddle surfing. The period is a short 7-8 seconds, so it’s just racy, bumpy junk.
With no recommendations at all, it’s a blank run. For this area, that’s not unheard of. It tends not to stay this poor forever, but looking at this forecast, you’d be better off doing something else for a couple of weeks.
Stay patient.
Rusty
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Warm (max 26°C on Tue afternoon, min 25°C on Mon night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu night, min 24°C on Thu night). Mainly strong winds. | ||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 6 | ENE 8 | ENE 5 | SSW 14 | SSW 14 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 735 | 515 | 436 | 411 | 269 | 188 | 86 | 81 | 142 | 30 | 77 | 73 | 182 | 308 | 192 | 278 | 305 | 349 | 318 |
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-on | cross | cross | cross-on | cross | cross | cross |
High Tide | 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 | 1:10PM0.77m | 1:01AM0.23m | |||||||
Low Tide | 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 | 5:38AM-0.02m | 8:50PM0.08m | |||||||
 |  | | | | | |  |  | | | | | |  | | | |  | |
 | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — |
 | 7:07 | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 24 | 26 | 26 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 23 | 22 | 22 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | SSW 14 | SW 14 | SSW 14 | NE 7 | SSW 14 | SW 18 | SSW 13 | SSW 13 | SSW 17 | SSW 12 | ENE 8 |
| kJ | 56 | 515 | 436 | 411 | 269 | 188 | 86 | 45 | 80 | 102 | 77 | 24 | 107 | 162 | 101 | 99 | 159 | 86 | 318 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 15 | SSW 14 | SSW 14 | SSE 11 | ENE 8 | SSE 11 | SSW 14 | SSW 19 | SSW 13 | SSW 18 | SW 18 | SSW 13 | SW 16 | S 16 |
| kJ | 9 | 46 | 51 | 47 | 38 | 88 | 82 | 81 | 24 | 22 | 23 | 73 | 148 | 67 | 124 | 150 | 96 | 66 | 131 |
Swell 3 Height (m) Direction Period (s) | W 14 | W 13 | SW 16 | SW 15 | SSE 13 | SSW 11 | SSE 12 | SSE 11 | SSW 10 | S 11 | SW 21 | SSE 11 | S 11 | SSW 15 | SSE 10 | SSE 10 | W 12 | SSW 18 | SSW 12 |
| kJ | 16 | 30 | 68 | 57 | 56 | 39 | 49 | 25 | 9 | 21 | 115 | 38 | 21 | 71 | 19 | 19 | 24 | 102 | 57 |
Wind waves Height (m) Direction Period (s) | ENE 12 | — | — | — | — | — | ENE 5 | ENE 6 | ENE 8 | ENE 5 | ENE 5 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — |
| kJ | 735 | — | — | — | — | — | 51 | 62 | 142 | 30 | 66 | 40 | 182 | 308 | 192 | 278 | 305 | 349 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 16 | 42 | 16 | 16 | 16 | 5 | 16 | 16 | 16 | 20 | 48 | 47 | 47 | 55 | 55 | 55 | 47 | 55 | 47 |
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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