Surf Forecasts:
Sandy Beach surf forecast from 1 Sep 2026:
- Best quality surf: Monday 7 Sep, 8PM (local time) - 7ft (2.2m), 11s period, ENE swell with offshore winds.
- Most powerful swell: Saturday 5 Sep, 11AM (local time) - 8ft (2.4m), 13s period, ENE swell with 1,901 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 8PM (local time) - 7ft (2.2m), 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 Monday (Sep 07) at 8PM. The primary swell is predicted to be 2.2m and 11s period with a secondary swell of 1.0m and 15s. The wind is predicted to be 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 Saturday (Sep 05) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 11s period and expected on Sunday (Sep 06) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 7th Sep) | 7ft (2.2m) 11s |
| Best Surf | 8PM (Mon 7th Sep) | 7ft (2.2m) 11s |
| Most Powerful | 11AM (Sat 5th Sep) | 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 be straight with you – this is a tough one for Sandy Beach. We’ve got a solid 16-day window ahead, but it’s a real battle between the size coming in and the wind absolutely ruining it. The first week is a write-off for any kind of quality surfing, so we’re looking at a long wait. The standout, and really the only window that’s worth paddling out for, is the afternoon of Monday the 7th of September.
For the first week, from the end of August right through to the 6th of September, it’s just a mess. We’re seeing solid swell, with heights hanging around 7 ft to 8 ft and moderate wave energy (743 to 1680 in the energy readings), but it’s all coming from the ENE or E at a short, weak period of 8 seconds. The real killer is the wind. It’s a relentless cross-shore or cross-onshore breeze, blowing 22 to 28 mph most days. That’s creating lumpy, messy cross-chop that’s just not surfable. The water temp is sitting at 80°, which is bang on normal for this time of year, but you wouldn’t know it through all that wind bump. Honestly, this setup looks way more interesting for kite surfing than paddle surfing.
Then we hit the 7th of September. The morning is still a bit rough with a fresh cross breeze, but check out Monday afternoon. The wind swings to the north at a gentle 9 mph, going cross-offshore. That’s the ticket. The swell is still a solid 8 ft from the ENE, but now with a much better period of 11 seconds, giving it some real push and shape. The energy is high (1872), but that clean wind is going to make all the difference. It’s still a big wave for beginners, but for the experienced crew, this is the moment. The only catch is Sandy Beach is a beach and reef setup, so while that long period groundswell will have some power, it might break a bit straight in sections. Keep an eye on the tide.
After that, things drop off. The 8th of September sees a tiny pulse from the SSW with a very long 15-second period, but the swell is only 3 ft to 4 ft, and the wind is onshore, so it’s a no-go. The rest of the second week is a slow fade. We’re looking at small, weak swell with energy dropping below 500, and the wind stays stubbornly cross or cross-on. The 13th and 14th of September have some tiny 2 ft to 2 ft leftovers from the south, but the period is long and the wind is messy. It’s a flat, frustrating run to finish the outlook.
So, to sum it up: the first week is a complete dud. The only real chance is Monday afternoon, the 7th of September. That’s your window. It’s a gamble with the wind, but if it holds, it’ll be the best we see for the whole 16 days.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 25°C on Mon afternoon). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sat night. Warm (max 26°C on Sat morning, min 25°C on Thu afternoon). Winds decreasing (strong winds from the ENE on Thu afternoon, moderate winds from the ENE by Sat night). | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 12 |
Wave Graph | ||||||||||||||||||||
428 | 439 | 475 | 453 | 475 | 494 | 620 | 1029 | 877 | 640 | 1003 | 893 | 474 | 1713 | 1901 | 1697 | 1697 | 1723 | 1610 | 1493 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross |
High Tide | 4:46PM0.43m | 6:14AM0.56m | 5:18PM0.36m | 7:19AM0.59m | 5:54PM0.28m | 8:36AM0.61m | 7:01PM0.22m | 9:55AM0.64m | 9:27PM0.19m | 11:03AM0.68m | 11:10PM0.21m | 12:00PM0.71m | 00:14AM0.26m | |||||||
Low Tide | 11:23PM0.04m | 12:53PM0.23m | 11:56PM0.04m | 2:47PM0.24m | 00:39AM0.05m | 5:18PM0.21m | 1:39AM0.06m | 6:33PM0.16m | 3:03AM0.07m | 7:10PM0.12m | 4:28AM0.06m | 7:41PM0.09m | ||||||||
— | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | |
6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — |
Temp °C | 26 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 22 | 21 | 22 | 24 | 24 | 23 | 23 | 23 | 22 | 20 | 20 | 20 | 20 | 21 | 25 | 24 | 25 | 25 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 19 | SSW 18 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | SSE 12 | SSE 12 | S 11 | S 11 | S 11 | SSW 12 | SSW 11 | SSW 11 | SW 11 | ENE 13 | ENE 12 |
138 | 192 | 329 | 314 | 364 | 422 | 318 | 279 | 206 | 230 | 469 | 502 | 474 | 389 | 380 | 302 | 183 | 229 | 1610 | 1493 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | SSW 14 | S 12 | S 10 | SSE 10 | S 11 | S 11 | SE 13 | E 12 | SW 18 | E 13 | E 13 | SSW 20 | SSE 10 | SSE 10 | SSW 16 | SSW 16 | SW 11 | SSW 18 |
55 | 51 | 80 | 77 | 35 | 19 | 41 | 37 | 170 | 107 | 12 | 285 | 352 | 38 | 57 | 57 | 102 | 171 | 166 | 427 | |
Swell 3 Height (m) Direction Period (s) | SSW 19 | SSW 14 | S 10 | SW 14 | SW 14 | SW 14 | E 14 | SE 16 | S 10 | S 14 | NW 9 | SW 18 | SW 13 | N 11 | SSW 18 | S 12 | S 12 | S 12 | SSW 16 | SW 10 |
122 | 79 | 30 | 52 | 51 | 30 | 66 | 61 | 17 | 150 | 3 | 12 | 7 | 10 | 120 | 44 | 45 | 45 | 298 | 127 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | ENE 13 | — | — |
428 | 439 | 475 | 453 | 475 | 494 | 620 | 1029 | 877 | 640 | 1003 | 893 | 452 | 1713 | 1901 | 1697 | 1697 | 1723 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 57 | 47 | 47 | 110 | 48 | 55 | 59 | 111 | 61 | 111 | 111 | 110 | 110 | 55 | 47 | 47 | 16 | 47 | 55 | 18 |
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.











