
Surf Forecasts:
Sandy Beach surf forecast from 28 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 5AM (local time) - 8ft (2.5m), 11s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 2PM (local time) - 8ft (2.4m), 13s period, E swell with 1,968 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 5AM (local time) - 8ft (2.5m), 11s period with ENE swell.
Best Forecast Surf Conditions for Sandy Beach this week:
The surf forecast for Sandy Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 29) at 5AM. The primary swell is predicted to be 2.5m and 11s period with a secondary swell of 0.7m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sandy Beach in the next 16 days are 2.4m 13s and forecast to arrive on Tuesday (Jul 28) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 7s period and expected on Wednesday (Jul 29) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 29th Jul) | 8ft (2.5m) 11s |
| Best Surf | 5AM (Wed 29th Jul) | 8ft (2.5m) 11s |
| Most Powerful | 2PM (Tue 28th Jul) | 8ft (2.4m) 13s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, this is Rusty comin' at ya from here on the South Shore, lookin' at the next couple of weeks. It's a bit of a mixed bag, so let's get into it.
Right off the bat, we got a bit of a tease. Tuesday morning, July 28th, Sandy Beach is showin' some solid signs. We're talkin' a clean 7ft of east swell, and that's a proper groundswell with a 13-second period. The wind is a fresh cross-offshore from the NE at 19 mph, which is gonna keep the faces nice and clean. The wave energy is pumping hard at 2058, so there's a lot of power in the water. It's a beach and reef setup, exposed to that east swell, and it's breakin' fairly consistent. But here's the kicker – the data flags it as "marginal surf forecast or questionable tide conditions," so you gotta pick your moment. That afternoon, it bumps up to 8ft with the same clean conditions and energy up to 2244, but the same tide warning applies. This is the best of the whole run, folks. Don't sleep on it if you can read the tide.
Wednesday the 29th rolls in, and we see a shift. The swell drops to 7ft in the morning, but it's swung around to the NE and the period has dropped to 10 seconds. The wind is a light cross-onshore from the SSW at 6 mph, so it's a bit bumpy, but still manageable. The energy is a moderate 1076. By afternoon, it's down to 6ft and the period is even shorter at 9 seconds. The wind goes cross-shore, but it's still a bit scratchy. Nothing to get too excited about.
Then we hit a long dry spell. From Thursday, July 30th, all the way through to Tuesday, August 12th, the forecast is pretty grim. The wind is a persistent, strong cross or cross-onshore from the ENE, blowin' anywhere from 19 to 28 mph. The swell is all over the place, but the conditions are just trash – "strong cross-shore with messy cross-chop," "strong cross-onshore and messy," "fresh cross-onshore and lumpy." It's a write-off for paddle surfing. Plenty of days with 8ft of swell, and the wave energy hits 1314 and 1253 on the 1st and 2nd of August, but with that wind, it's a washing machine. You'd be better off with a kite than a board on those days. The one little blip is on Thursday, August 6th, afternoon. The wind goes cross-off from the NNE at 16 mph, and the surf cleans up nice, but the 7ft swell has a short period of 7 seconds, and it's still flagged as marginal. It's a desperate man's option.
So, bottom line: your best bet is Tuesday, July 28th, at Sandy Beach. Get out there if you can, keep an eye on the tide, and you'll score. After that, you're lookin' at a solid two-week stretch of poor conditions before anything else remotely interesting shows up. Keep your eyes on the charts, 'cause this kind of run can't last forever.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Mon night. Warm (max 26°C on Tue afternoon, min 25°C on Mon night). Winds decreasing (fresh winds from the NE on Mon night, light winds from the SSW by Wed morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Thu night, min 24°C on Sat night). Winds increasing (moderate winds from the E on Thu night, strong winds from the ENE by Fri night). | ||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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 13 | E 13 | E 13 | ENE 12 | NE 10 | NE 9 | ENE 8 | ENE 8 | SSW 18 | ENE 8 | E 8 | ENE 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph | |||||||||||||||||||
1391 | 1667 | 1932 | 1913 | 881 | 528 | 262 | 287 | 207 | 266 | 329 | 414 | 765 | 816 | 916 | 702 | 686 | 592 | 578 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-on | cross | on | cross | cross-on | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross |
High Tide | 2:09AM0.22m | 2:58PM0.69m | 2:46AM0.24m | 3:28PM0.69m | 3:26AM0.26m | 3:57PM0.68m | 4:08AM0.30m | 4:25PM0.65m | 4:55AM0.33m | 4:53PM0.60m | 5:48AM0.38m | 5:22PM0.53m | |||||||
Low Tide | 10:01PM0.09m | 7:44AM-0.00m | 10:25PM0.09m | 8:21AM0.00m | 10:49PM0.08m | 8:58AM0.02m | 11:13PM0.07m | 9:38AM0.05m | 11:37PM0.06m | 10:23AM0.11m | 00:02AM0.05m | 11:17AM0.16m | 00:29AM0.04m | ||||||
— | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
7:12 | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | |
mm | 1 | 1 | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 23 | 24 | 26 | 24 | 29 | 28 | 29 | 25 | 26 | 25 | 23 | 23 | 22 | 20 | 20 | 21 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 13 | E 13 | ENE 12 | NE 10 | NE 9 | ENE 8 | S 14 | ENE 8 | S 13 | S 12 | E 16 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 |
1391 | 1667 | 1932 | 1913 | 881 | 528 | 262 | 179 | 202 | 166 | 113 | 301 | 267 | 264 | 253 | 257 | 253 | 198 | 128 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | S 14 | SSW 14 | S 14 | S 14 | S 14 | SW 18 | S 13 | SSW 16 | E 15 | SW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SSW 13 | SSW 13 |
213 | 143 | 179 | 145 | 195 | 195 | 187 | 154 | 173 | 177 | 159 | 239 | 220 | 127 | 123 | 131 | 97 | 68 | 56 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | SSE 10 | SSE 10 | SSE 10 | SW 21 | SSW 20 | N 7 | E 19 | SSW 18 | E 16 | SW 16 | S 12 | SSW 12 | SSW 12 | S 11 | S 11 | N 9 | N 8 | SW 13 |
4 | 10 | 9 | 9 | 17 | 37 | 22 | 29 | 207 | 127 | 206 | 106 | 47 | 46 | 22 | 22 | 14 | 13 | 43 | |
Wind waves Height (m) Direction Period (s) | NNE 7 | NE 8 | NNE 7 | NNE 9 | — | — | — | ENE 8 | — | ENE 8 | E 8 | ENE 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
224 | 238 | 124 | 166 | — | — | — | 287 | — | 266 | 329 | 414 | 765 | 816 | 916 | 702 | 686 | 592 | 578 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 20 | 18 | 23 | 5 | 3 | 3 | 22 | 18 | 14 | 47 | 55 | 111 | 110 | 132 | 110 | 57 | 113 | 55 | 50 |
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.










