Surf Forecasts:
Sandy Beach surf forecast from 22 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.0m), 17s period, S swell with 594 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 1.0m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. 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 16s period and expected on Saturday (Aug 22) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, Rusty here, let's have a look at what's coming down the pipe for Sandy Beach.
Alright, look, I'm gonna be straight with you – the next week and a half is a write-off. It's a frustrating stretch of onshore ENE winds and lumpy, cross-shore chop that just won't let up. The combined energy is mostly moderate to strong, hitting a peak of (773) on the 27th, but with the wind howling from the wrong direction, it's all just a mess. Forget about it.
The first real glimmer of hope doesn't show up until Wednesday, the 2nd of September. The wind finally drops out. On Wednesday afternoon, we’re looking at glassy conditions with a tiny, but clean, 3ft groundswell out of the south with a long 16 second period. The energy is still moderate at (570), but that glassy surface is a major positive. The water temp is sitting at 80°, which is about normal for this time of year, so the rubber's not needed. The catch is, this is a very long-period south swell, which tends to break a little too straight on a beach setup like Sandy's, but with no wind it'll be the best we've seen in two weeks.
Thursday the 3rd of September offers a little more of the same, but a light east breeze creeps in, messing up that glass. We see a 2ft south swell (15 sec) in the morning and dropping to 2ft in the afternoon. The energy drops right off to (366) and (298), so it's getting weak.
Then, hold onto your board. The weekend of the 6th and 7th of September has a massive pulse of energy on the charts. Saturday the 5th sees the combined energy jump into the thousands, hitting (2133) by the afternoon with a 6ft east groundswell, but the wind is still a moderate cross-shore. The real monster is Sunday the 6th of September. The forecast is for a 10ft ENE swell, with a combined energy reading of (3652)! That is a very strong, powerful swell. The winds are forecast to be moderate cross-shore, which is alright, but a 10ft swell is expert-only territory at a beach break like Sandy Beach. It's going to be a heavy, closed-out mess for anyone without serious experience. The current is going to be a nightmare. Honestly, with that much power and a cross-shore wind, this setup looks more interesting for kite surfing than paddle surfing.
So, to sum it up: the standout window is the 2nd of September for a glassy, clean session on the small south swell. After that, the 6th of September brings a huge, expert-only swell that is more for watching than surfing if you're not a pro.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Sat morning, min 25°C on Sat morning). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Tue morning, min 25°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
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 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | E 16 |
Wave Graph | |||||||||||||||||||||
198 | 286 | 478 | 247 | 290 | 260 | 239 | 194 | 225 | 285 | 301 | 247 | 302 | 307 | 351 | 594 | 427 | 482 | 260 | 329 | 310 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross-on |
High Tide | 12:10PM0.60m | 00:02AM0.21m | 12:51PM0.62m | 00:45AM0.24m | 1:26PM0.65m | 1:20AM0.27m | 1:56PM0.66m | 1:55AM0.30m | 2:25PM0.67m | 2:30AM0.34m | 2:53PM0.66m | 3:07AM0.39m | 3:21PM0.62m | 3:47AM0.44m | |||||||
Low Tide | 8:09PM0.14m | 5:23AM0.08m | 8:29PM0.12m | 6:13AM0.06m | 8:49PM0.11m | 6:56AM0.04m | 9:09PM0.10m | 7:36AM0.04m | 9:29PM0.09m | 8:15AM0.04m | 9:49PM0.07m | 8:57AM0.06m | 10:10PM0.06m | ||||||||
6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | |
— | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 24 | 24 | 24 | 24 | 23 | 23 | 24 | 24 | 25 | 25 | 24 | 24 | 21 | 22 | 23 | 22 | 23 | 22 | 22 | 24 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SSW 16 | SW 15 | SSW 15 | SW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 |
261 | 251 | 212 | 116 | 191 | 100 | 166 | 156 | 127 | 85 | 142 | 121 | 215 | 307 | 351 | 594 | 427 | 482 | 260 | 329 | 229 | |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | S 14 | S 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | S 12 | SSW 12 | NNE 8 | E 17 | E 16 | E 16 |
51 | 53 | 106 | 90 | 34 | 66 | 50 | 48 | 46 | 146 | 81 | 81 | 165 | 135 | 137 | 71 | 46 | 11 | 148 | 190 | 310 | |
Swell 3 Height (m) Direction Period (s) | S 12 | S 12 | WNW 10 | SSW 15 | S 11 | SSW 15 | SSW 18 | SE 7 | SSW 17 | SSE 12 | SSE 10 | SSW 18 | SSE 12 | SSE 12 | SSW 16 | N 8 | NNE 8 | E 18 | SSW 11 | SSW 19 | SW 19 |
47 | 47 | 34 | 76 | 22 | 71 | 62 | 14 | 94 | 27 | 21 | 109 | 14 | 14 | 50 | 6 | 7 | 59 | 22 | 36 | 57 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 6 | ENE 6 | E 6 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 |
198 | 286 | 478 | 247 | 290 | 260 | 239 | 194 | 225 | 285 | 301 | 247 | 302 | 170 | 126 | 108 | 94 | 145 | 155 | 144 | 276 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 48 | 55 | 55 | 55 | 57 | 55 | 55 | 48 | 47 | 49 | 55 | 47 | 55 | 48 | 47 | 47 | 47 | 18 | 48 | 59 | 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.











