Surf Forecasts:
Sandy Beach surf forecast from 29 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 11AM (local time) - 6ft (1.9m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Saturday 1 Aug, 2PM (local time) - 10ft (3.0m), 8s period, ENE swell with 1,081 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 11AM (local time) - 6ft (1.9m), 10s 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 11AM. The primary swell is predicted to be 1.9m and 10s 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 3.0m 8s and forecast to arrive on Saturday (Aug 01) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 15s period and expected on Friday (Jul 31) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 29th Jul) | 6ft (1.9m) 10s |
| Best Surf | 11AM (Wed 29th Jul) | 6ft (1.9m) 10s |
| Most Powerful | 2PM (Sat 1st Aug) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at the next couple of weeks for Sandy Beach. Gotta be straight with you – it’s a tough stretch. There’s one real window that’s worth paddling out for, but you’ll have to be patient through a lot of messy, wind-whipped days to get to it.
The week starts off with a bit of a tease. Wednesday the 29th morning is your best bet for a while. We’ve got a clean 6ft swell pushing in from the ENE with moderate energy (892), and a light north wind holding it cross-off. That’s about as good as it’s gonna get for a while. The water is sitting at a warm 80°, which is pretty much spot-on for this time of year. This is the standout window of the forecast.
But from Wednesday afternoon onwards, it’s a battle. The wind swings onshore and picks up, turning things choppy. Thursday through the weekend and into the first half of next week is a write-off. You’ve got a relentless cross-shore wind, mostly from the ENE, gusting 18 to 31 mph. Swell stays in the 5ft to 8ft range but with a short, weak period of 8 seconds. The wave energy climbs high, but it’s all junk – cross-chop and lumpy conditions. Honestly, this setup at Sandy Beach during this period looks more interesting for the kite crew than for anyone with a paddle.
By Tuesday the 4th of August, the wind backs off a touch, but it’s still cross or cross-off with a 5ft swell. The conditions are cleaner but the wave quality is still marginal. The long period on the 4th (11-12 seconds) hints at some energy, but it’s not enough to get excited about. From there, the wind ramps up again, and the rest of the second week stays mostly poor with onshore winds and messy cross-chop.
So, to sum it up: if you want a paddle, make it Wednesday morning July 29th. After that, it’s a solid two-week stretch of frustrating onshore slop. It’s one of those runs where you wait for the charts to change.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 24°C on Fri night). Winds increasing (light winds from the NE on Wed afternoon, strong winds from the ENE by Fri night). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sat morning, min 24°C on Sat night). Winds decreasing (strong winds from the ENE on Sat morning, light winds from the ENE by Mon night). | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 10 | ENE 9 | S 14 | ENE 8 | ENE 8 | E 7 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 697 | 413 | 184 | 250 | 207 | 320 | 375 | 426 | 946 | 916 | 979 | 1058 | 801 | 699 | 554 | 439 | 361 | 824 | 503 | 452 | 338 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross |
High Tide | 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 | 7:57AM0.48m | 6:26PM0.37m | ||||||||
Low Tide | 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 | 2:07PM0.27m | 1:37AM0.03m | |||||||
 | |  |  | |  | | | | | | | | | | | | |  | |  | |
 | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — |
 | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 28 | 29 | 28 | 27 | 25 | 26 | 24 | 21 | 21 | 20 | 20 | 21 | 21 | 21 | 21 | 24 | 22 | 23 | 26 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | S 12 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | E 12 | E 13 | ENE 12 | ENE 11 | ENE 11 | ENE 10 |
| kJ | 697 | 413 | 176 | 250 | 204 | 228 | 153 | 301 | 205 | 267 | 253 | 194 | 186 | 198 | 125 | 77 | 119 | 824 | 503 | 452 | 338 |
Swell 2 Height (m) Direction Period (s) | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | E 15 | SW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSE 13 |
| kJ | 195 | 195 | 184 | 179 | 171 | 166 | 159 | 239 | 223 | 127 | 123 | 131 | 133 | 67 | 57 | 42 | 32 | 49 | 47 | 43 | 59 |
Swell 3 Height (m) Direction Period (s) | SW 21 | SSW 20 | NNE 7 | SW 18 | SSW 18 | SSW 16 | SW 16 | S 12 | S 12 | S 12 | S 11 | S 11 | N 9 | N 9 | SW 13 | SSW 13 | SW 12 | SSW 17 | SSW 16 | SSE 14 | SW 15 |
| kJ | 17 | 37 | 54 | 154 | 207 | 177 | 206 | 106 | 69 | 42 | 39 | 22 | 16 | 14 | 42 | 54 | 38 | 30 | 26 | 65 | 57 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | E 7 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | — |
| kJ | — | — | — | — | — | 320 | 375 | 426 | 946 | 916 | 979 | 1058 | 801 | 699 | 554 | 439 | 361 | 202 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 5 | 5 | 5 | 47 | 20 | 55 | 61 | 111 | 132 | 110 | 57 | 55 | 59 | 50 | 50 | 50 | 16 | 5 | 5 | 5 |
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.
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