Surf Forecasts:
Sandy Beach surf forecast from 6 Sep 2026:
- Most powerful swell: Tuesday 8 Sep, 5AM (local time) - 11ft (3.5m), 12s period, SSW swell with 3,080 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 3.5m 12s and forecast to arrive on Tuesday (Sep 08) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 13s period and expected on Tuesday (Sep 08) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Tue 8th Sep) | 11ft (3.5m) 12s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Right then, let’s talk about Sandy Beach. Honestly, looking at the next 16 days, it’s a bit of a tough stretch. The forecast is pretty much a long run of poor surf conditions, with the first real window of anything surfable not showing up until Sunday the 6th of September, and even then it’s a tough sell.
Sunday morning the 6th kicks off with some lumpy, cross-shore chop. The wind is a stiff 19 mph from the ENE, making a mess of things. The swell is coming in at 7 ft from the ENE, with a period of 12 seconds, so there’s some decent energy behind it (combined energy of 1951), but that wind is just ruining the shape. The water is sitting at 81°, which is about average for the time of year. Sunday afternoon doesn’t get any better, with a risk of thunderstorms and the wind turning onshore.
From Monday the 7th right through to the end of the 16-day run, it’s a real desert. The scores are all zeros and ones, with constant onshore or cross-shore winds, very often in the 16 to 19 mph range. The swell sticks around for a bit, but the quality is shot. There’s a stretch from the 10th to the 12th where the swell height drops to 5 ft and below, but the wind is still a fresh 19 mph from the ENE, leaving it lumpy and choppy. You see a few readings with a cleaner descriptor, like Monday afternoon the 14th with a "cross-off" wind, but the swell is only 3 ft from the NE with a short 8-second period – just not enough to get excited about.
The real standout, if you can call it that, is the very end of the outlook. Monday morning the 21st of September. The wind drops to a light 6 mph from the E, and the swell is 4 ft from the ENE. It’s still cross-onshore, far from glassy, but it’s the lightest wind we’ve seen in the whole two weeks. The energy is low (344), so it’s not going to be powerful, but it’s the best chance of something that isn’t a complete blown-out mess. For a spot that’s fairly consistent, this is a rough run. Kite surfers might have a field day with the wind, but for a paddle surfer, this is a waiting game. The first week is a write-off.
Rusty.
Short Range ForecastHeavy rain (total 39mm), heaviest during Sun night. Warm (max 27°C on Mon afternoon, min 24°C on Sun night). Winds decreasing (fresh winds from the SSE on Mon night, light winds from the SE by Tue night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed morning. Warm (max 27°C on Wed morning, min 25°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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 12 | ENE 12 | ENE 12 | E 12 | SSW 13 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | SSW 14 | SSW 13 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 12 | ENE 11 | ENE 10 | ENE 10 | NE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1240 | 1064 | 1338 | 784 | 1083 | 1211 | 854 | 627 | 356 | 269 | 257 | 176 | 225 | 186 | 168 | 142 | 343 | 597 | 380 | 339 | 376 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 12:00PM0.71m | 00:14AM0.26m | 12:48PM0.73m | 1:03AM0.31m | 1:30PM0.72m | 1:48AM0.38m | 2:07PM0.69m | 2:29AM0.44m | 2:41PM0.65m | 3:11AM0.50m | 3:13PM0.59m | 3:51AM0.55m | 3:42PM0.51m | 4:32AM0.57m | |||||||
Low Tide | 7:41PM0.09m | 5:40AM0.04m | 8:09PM0.07m | 6:40AM0.03m | 8:36PM0.05m | 7:34AM0.03m | 9:01PM0.04m | 8:25AM0.05m | 9:26PM0.04m | 9:14AM0.08m | 9:49PM0.03m | 10:05AM0.12m | 10:11PM0.04m | ||||||||
 |  |  |  | | |  |  | | | |  | | |  | | | | | | | |
 | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — |
mm | — | 7 | 14 | 4 | 4 | 6 | 2 | — | 2 | 1 | 1 | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 26 | 26 | 25 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 26 | 26 | 24 | 25 | 27 | 27 | 27 | 28 | 30 | 30 | 29 | 27 | 25 | 23 | 23 | 23 | 23 | 22 | 24 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | ENE 12 | ENE 12 | E 12 | SSW 13 | SW 13 | ENE 11 | ENE 11 | ENE 10 | ENE 8 | ENE 8 | E 13 | SSW 13 | E 12 | E 12 | ENE 12 | ENE 12 | SW 15 | ENE 10 | SSW 16 | SSW 13 |
| kJ | 374 | 1064 | 1338 | 784 | 1083 | 3971 | 854 | 627 | 284 | 177 | 149 | 156 | 129 | 101 | 130 | 142 | 343 | 226 | 380 | 99 | 68 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 12 | SSW 14 | SW 12 | ENE 12 | ENE 12 | WSW 10 | SSW 8 | SSW 8 | SSW 14 | SSW 13 | SSW 13 | E 12 | SSW 13 | SW 16 | SW 16 | SW 15 | SW 8 | SW 15 | SW 13 | SW 16 |
| kJ | 318 | 517 | 1048 | 480 | 876 | 1211 | 596 | 361 | 128 | 269 | 257 | 176 | 141 | 125 | 211 | 206 | 229 | 18 | 242 | 88 | 64 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | S 19 | S 18 | SSW 17 | SSW 17 | SSW 15 | SSW 15 | W 9 | SSW 14 | SSW 7 | E 13 | S 7 | SW 16 | SW 18 | SW 10 | SW 9 | NNE 7 | SSW 11 | SW 8 | SW 8 | WSW 8 |
| kJ | 19 | 180 | 240 | 492 | 486 | 487 | 468 | 230 | 356 | 62 | 166 | 25 | 133 | 155 | 49 | 43 | 30 | 25 | 11 | 10 | 6 |
Wind waves Height (m) Direction Period (s) | ENE 12 | ENE 12 | — | ENE 7 | ENE 7 | SSE 8 | SSW 10 | — | — | — | — | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | ENE 11 | ENE 10 | ENE 10 | NE 10 |
| kJ | 1240 | 706 | — | 247 | 198 | 373 | 698 | — | — | — | — | 151 | 225 | 186 | 168 | 140 | — | 597 | 267 | 339 | 376 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 48 | 44 | 5 | 113 | 42 | 62 | 62 | 5 | 5 | 5 | 5 | 16 | 47 | 16 | 19 | 47 | 47 | 18 | 47 | 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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