
Surf Forecasts:
Sandy Beach surf forecast from 29 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 5AM (local time) - 6.5ft (2.0m), 11s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 5PM (local time) - 8ft (2.4m), 13s period, E swell with 1,909 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 5AM (local time) - 6.5ft (2.0m), 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 2.0m and 11s period with a secondary swell of 0.9m and 9s. 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 5PM. 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 15s period and expected on Friday (Jul 31) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 29th Jul) | 6.5ft (2.0m) 11s |
| Best Surf | 5AM (Wed 29th Jul) | 6.5ft (2.0m) 11s |
| Most Powerful | 5PM (Tue 28th Jul) | 8ft (2.4m) 13s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on offer at Sandy Beach over the next couple of weeks.
Right off the bat, I gotta be straight with you – there’s a bit of a lull before we see anything worth paddling out for. The first few days are a write-off for quality surfing. Tuesday morning the 28th has some size, around 7 ft from the east, but that 30 km/h NNE wind is cross-off and just makes it a messy, marginal affair. The water is sitting at 27°, which is pretty much average for this time of year, so nothing weird there.
The best window we’ve got in the whole 16-day run is Wednesday the 29th. It’s not a massive swell, but the conditions align nicely. Wednesday morning sees 6 ft from the ENE, dropping to 6 ft by the afternoon. The wind drops right back to a light 10 km/h from the north, shifting slightly north-northeast, keeping it cross-off. This is the cleanest it’s going to get. The swell period is around 10 seconds dropping to 9 seconds, which is a decent mix of energy and shape – not a super long groundswell, but it’ll give you some punchy walls. The combined energy is moderate (892 in the morning, 729 in the afternoon). For an intermediate spot like Sandy Beach, this is the sweet spot. It’s clean, there’s some push, and it’s not too big. Crowds are often a factor here, so get there early if you can.
After that, it’s a long, grim stretch. From Thursday the 30th all the way through to the end of the first week of August, the wind turns onshore from the ENE, blowing 25 to 45 km/h. The swell stays around 5 ft to 10 ft, but with that strong breeze, it’s just a lumpy, messy cross-shore chop. The combined energy spikes up to 1420 on Saturday the 1st of August, but with 45 km/h wind, it’s not a paddle wave – more of a kite-surfing scene if you’re into that. The period drops to 8 seconds or less, making it choppy and weak. Honestly, it’s a hard pass for the surfer.
We do see a slight shift around the 9th of August. The swell direction swings to the SSW, and the period jumps to 18 seconds – that’s a proper long-period groundswell. But the height is small, only 3 ft to 4 ft, and the wind is still a moderate to fresh cross-shore from the ENE. The combined energy is moderate (700-900 range), but with those conditions, it’s marginal at best. The long period will make it peel a bit more at a point or reef, but Sandy Beach is a beach-and-reef setup, and with that cross-shore wind, it’s not going to be clean. These are just “questionable tide” days.
So, to wrap it up: Wednesday the 29th is your one true standout. It’s not a massive swell, but the light wind and clean conditions make it the best on offer. The rest of the 16-day window is a long, windy mess. Get out there on Wednesday if you can, because after that, it’s a waiting game.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed night. Warm (max 26°C on Tue afternoon, min 24°C on Tue night). Winds increasing (light winds from the ESE on Wed night, fresh winds from the ENE by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Fri morning, min 24°C on Fri night). Winds decreasing (strong winds from the ENE on Fri night, moderate winds from the ENE by Sun night). | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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 13 | E 13 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 13 |
Wave Graph | |||||||||||||||||||||
1667 | 1909 | 1126 | 697 | 497 | 267 | 291 | 225 | 292 | 427 | 437 | 1041 | 984 | 889 | 1071 | 865 | 678 | 541 | 344 | 277 | 284 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | on | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 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 | 6:48AM0.43m | 5:53PM0.45m | ||||||||
Low Tide | 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 | 12:27PM0.23m | 00:59AM0.04m | ||||||||
6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 25 | 26 | 25 | 29 | 29 | 28 | 25 | 25 | 25 | 23 | 21 | 21 | 19 | 20 | 19 | 22 | 21 | 22 | 23 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 13 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | S 13 | S 12 | E 16 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 |
1667 | 1909 | 1126 | 697 | 497 | 267 | 291 | 215 | 166 | 113 | 301 | 267 | 264 | 253 | 260 | 261 | 198 | 198 | 126 | 121 | 268 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | SSW 16 | E 15 | SW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SSW 13 | SSW 13 | SW 13 | SSW 12 | SSW 12 |
143 | 179 | 184 | 195 | 195 | 184 | 181 | 225 | 177 | 159 | 239 | 220 | 127 | 123 | 131 | 96 | 67 | 57 | 42 | 29 | 48 | |
Swell 3 Height (m) Direction Period (s) | SSE 10 | — | SW 21 | SW 21 | SSW 20 | SW 19 | SW 18 | SSW 18 | E 16 | SW 16 | S 12 | SSW 12 | SSW 12 | S 11 | S 11 | N 9 | N 9 | SW 13 | SSW 13 | SW 13 | S 13 |
10 | — | 18 | 17 | 37 | 58 | 154 | 207 | 127 | 206 | 106 | 47 | 45 | 39 | 22 | 7 | 13 | 42 | 33 | 41 | 14 | |
Wind waves Height (m) Direction Period (s) | NNE 8 | NNE 9 | NNE 9 | — | — | — | — | — | E 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
173 | 190 | 151 | — | — | — | — | — | 292 | 427 | 437 | 1041 | 984 | 889 | 1071 | 865 | 678 | 541 | 344 | 277 | 284 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 20 | 5 | 0 | 0 | 5 | 16 | 47 | 55 | 57 | 61 | 111 | 132 | 61 | 63 | 55 | 140 | 16 | 55 | 16 | 16 |
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.










