Surf Forecasts:
Sandy Beach surf forecast from 1 Aug 2026:
- Most powerful swell: Saturday 1 Aug, 8AM (local time) - 10ft (3.0m), 8s period, E swell with 1,142 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 3.0m 8s and forecast to arrive on Saturday (Aug 01) at 8AM. Winds are predicted to be cross-onshore 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+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (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 again. Let's be honest – this is a rough stretch for Sandy Beach. We’ve got a solid 16-day window, but the surf gods are not smiling on this spot. The whole run is plagued by persistent, strong cross and cross-onshore winds from the ENE, gusting 25-28 mph, which just tears the ocean apart. The combined energy of all swells directed here is moderate at best, peaking in the first few days, but it’s all wind-chop – no shape, no quality.
The first real recommendation doesn’t come until Tuesday, August 4th, and even that’s a marginal call. You’ll be looking at a 5 ft swell from the ENE with a long 11-second period – that’s groundswell energy, but it’s straight onshore wind and cross-chop, so it’s not going to be clean. The water temp is a balmy 80°F, dead on average for this time of year, so no worries there, but you’ll be fighting the wind more than the waves.
After that, we’ve got a gap of several days with nothing worth paddling out for. The only glimmer of hope shows up way out on Thursday, August 13th. A 4 ft SSW groundswell rolls in with a very long 16-second period and the wind drops to a gentle 9 mph breeze. It’s still cross-shore, but that’s the cleanest we’ll see all forecast. The combined energy is moderate, and it’s the only day that gets a score worth mentioning. If you’re desperate, that’s your window, but don’t expect a classic.
Honestly, the whole setup is so wind-affected, it might be more interesting for the kite crew than for a paddle surfer. I’d keep the board in the car for now.
Rusty out.
Short Range ForecastMostly dry. Warm (max 26°C on Fri morning, min 24°C on Sun night). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Wed morning, min 25°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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 7 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | E 6 | ENE 7 | ENE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 400 | 537 | 1102 | 1142 | 871 | 1026 | 801 | 662 | 560 | 404 | 321 | 713 | 582 | 436 | 331 | 253 | 218 | 157 | 82 | 153 | 172 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross |
High Tide | 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 | 9:10AM0.55m | 7:10PM0.29m | 10:22AM0.61m | 8:39PM0.22m | ||||||||
Low Tide | 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 | 4:33PM0.27m | 2:24AM0.02m | 6:43PM0.21m | 3:25AM0.02m | |||||||
 | |  | | |  | | | |  | | | | | | | | |  | |  | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 25 | 21 | 20 | 20 | 20 | 21 | 21 | 21 | 22 | 23 | 23 | 23 | 25 | 24 | 25 | 27 | 26 | 26 | 25 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | S 12 | E 16 | SW 15 | SSW 14 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | SSW 12 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | SSW 14 | SW 14 |
| kJ | 153 | 301 | 220 | 127 | 196 | 194 | 188 | 142 | 125 | 84 | 108 | 48 | 582 | 436 | 331 | 253 | 218 | 157 | 44 | 81 | 102 |
Swell 2 Height (m) Direction Period (s) | E 15 | SW 15 | S 12 | S 12 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 13 | SSW 12 | SSE 9 | SSW 12 | SSW 11 | S 11 | S 11 | SSW 15 | SW 14 | SSW 14 | SSE 11 | S 11 |
| kJ | 159 | 239 | 71 | 42 | 123 | 131 | 133 | 68 | 56 | 42 | 29 | 16 | 46 | 51 | 62 | 61 | 88 | 53 | 82 | 41 | 21 |
Swell 3 Height (m) Direction Period (s) | SW 16 | S 12 | N 8 | W 13 | S 11 | S 11 | N 9 | N 9 | SW 13 | SSW 13 | SW 13 | S 13 | SSW 16 | SSE 14 | SW 15 | SW 16 | SSW 11 | SSE 12 | SSE 12 | SSW 10 | SSW 21 |
| kJ | 206 | 106 | 5 | 3 | 39 | 22 | 15 | 14 | 42 | 33 | 41 | 13 | 26 | 38 | 57 | 61 | 39 | 48 | 26 | 9 | 44 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | — | — | — | — | — | — | E 6 | ENE 7 | ENE 6 |
| kJ | 400 | 537 | 1102 | 1142 | 871 | 1026 | 801 | 662 | 560 | 404 | 321 | 713 | — | — | — | — | — | — | 71 | 153 | 172 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 57 | 61 | 113 | 132 | 113 | 113 | 113 | 140 | 50 | 20 | 50 | 16 | 16 | 5 | 16 | 16 | 20 | 16 | 47 | 47 | 47 |
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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