
Surf Forecasts:
Sandy Beach surf forecast from 21 Jul 2026:
- Most powerful swell: Monday 27 Jul, 2PM (local time) - 6ft (1.8m), 14s period, E swell with 1,321 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 1.8m 14s and forecast to arrive on Monday (Jul 27) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Mon 27th Jul) | 6ft (1.8m) 14s |
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 for Sandy Beach over the next couple of weeks.
Right off the bat, I gotta be straight with you – the next week and a half is a tough slog. The wind is a problem. It’s coming from the ENE, which is cross or cross-on here, and it’s fresh to strong, so the ocean is just a lumpy, choppy mess. The swell is there, but it’s wrapped in bad conditions. The water temp is sitting at 80°F, which is pretty much what you’d expect for this time of year. Nothing to write home about.
We start off from Tuesday the 21st through Thursday the 23rd with small swell around 2 ft to 3 ft from the SSW, but with long periods, 14 to 24 seconds. That’s a lot of energy for not much height, and the combined energy is moderate to strong (465 to 969). Problem is, the wind is ruining it. The surf is just poor. Don’t bother.
Friday the 24th and Saturday the 25th see a jump in size to 7 ft - 7 ft, but it’s short-period windswell from the ENE at 7-8 seconds. The combined energy is strong (1009 to 1230), but the wind is howling at 22 to 25 mph from the ENE. This is a classic beach-and-reef setup that’s more interesting for kite surfing than for paddle surfing. It’s messy and poor.
Now, from Sunday the 26th of July right through to Wednesday the 5th of August, things get a little more interesting. The swell drops back a bit, but the periods get long. We’re looking at a mix of E and ENE swell, with heights ranging from 4 ft to 7 ft and periods from 8 to 16 seconds. The combined energy is strong (473 to 1887). The wind remains a cross-wind, but it drops from a fresh breeze to a moderate breeze, and on Thursday the 30th, it’s even a light breeze. The surf is still described as “marginal” due to the cross-chop, but on Thursday the 30th, with a 6 ft, 10-second ENE swell and a light cross-breeze, it’s the best look of the whole period. The combined energy is moderate (770 in the morning). It’s not a standout, but it’s the only window where the conditions are almost clean.
The real standout, if you can call it that, is Thursday the 30th of July. The swell hits 6 ft from the ENE, the period is 10 seconds, and the wind is just a light breeze. The cross-chop will be minimal. It’s only a slight improvement, but on this forecast, it’s the best we’ve got. The crowd profile is “often” here, so you’ll have company, but the quality is low enough that most will stay home. The optimum swell direction for Sandy Beach is ESE, so the ENE swell is a bit off, but it’s close enough to work.
After the 30th, we roll into a gap. Friday the 31st of July and Saturday the 1st of August are poor again, with small swell and strong wind. Sunday the 2nd picks up some size, but it’s short-period windswell and still messy. Monday the 3rd through Wednesday the 5th of August has some 6 ft to 7 ft ENE swell with periods of 9 to 12 seconds, but the wind is a moderate to fresh cross-wind, keeping it marginal. It’s a long wait for a clean day.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue morning. Warm (max 25°C on Tue morning, min 24°C on Wed afternoon). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Warm (max 25°C on Fri morning, min 24°C on Fri morning). Mainly strong winds. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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) | S 14 | S 14 | S 13 | SSW 24 | SSW 23 | SSW 22 | ENE 7 | E 7 | SSW 18 | SSW 18 | SSW 17 | ENE 7 | ENE 8 | SSW 18 | ENE 8 | E 15 | E 16 | E 16 | E 14 | E 14 | E 14 |
Wave Graph | |||||||||||||||||||||
329 | 311 | 277 | 317 | 426 | 363 | 412 | 395 | 503 | 329 | 349 | 482 | 471 | 572 | 547 | 563 | 959 | 1206 | 1055 | 1321 | 1297 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross |
High Tide | 10:08AM0.51m | 7:46PM0.29m | 11:08AM0.55m | 8:50PM0.23m | 11:59AM0.59m | 10:38PM0.19m | 12:42PM0.62m | 11:56PM0.19m | 1:20PM0.64m | 00:50AM0.19m | 1:55PM0.66m | 1:32AM0.20m | 2:28PM0.68m | 2:09AM0.22m | |||||||
Low Tide | 5:25PM0.28m | 3:12AM0.05m | 7:38PM0.23m | 3:57AM0.05m | 8:24PM0.18m | 8:50PM0.15m | 5:38AM0.03m | 9:14PM0.12m | 6:24AM0.02m | 9:38PM0.11m | 7:06AM0.01m | 10:01PM0.09m | |||||||||
5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | 1 | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 25 | 24 | 24 | 25 | 24 | 25 | 25 |
Feels °C | 25 | 24 | 24 | 23 | 22 | 21 | 21 | 21 | 20 | 22 | 22 | 20 | 22 | 22 | 22 | 21 | 21 | 22 | 22 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | NE 7 | ENE 7 | S 13 | E 11 | S 13 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | SSW 18 | E 15 | E 16 | E 16 | E 14 | E 14 | E 14 |
136 | 67 | 140 | 215 | 123 | 157 | 412 | 395 | 464 | 329 | 340 | 232 | 391 | 572 | 547 | 563 | 959 | 1206 | 1055 | 1321 | 1297 | |
Swell 2 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | E 12 | SSW 23 | SSW 22 | S 12 | S 11 | S 11 | S 12 | S 12 | S 20 | SSW 16 | S 11 | E 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 |
329 | 311 | 277 | 138 | 426 | 363 | 97 | 90 | 56 | 143 | 104 | 296 | 223 | 64 | 249 | 469 | 341 | 333 | 228 | 222 | 213 | |
Swell 3 Height (m) Direction Period (s) | SW 17 | E 7 | E 13 | SSW 24 | S 13 | SW 18 | SSW 16 | SW 16 | S 13 | SSW 16 | S 21 | S 12 | S 11 | E 13 | S 11 | SSW 11 | SSW 10 | SW 9 | SW 8 | SW 8 | SSE 10 |
72 | 46 | 121 | 317 | 125 | 150 | 100 | 127 | 85 | 94 | 231 | 100 | 61 | 55 | 37 | 38 | 36 | 21 | 11 | 11 | 10 | |
Wind waves Height (m) Direction Period (s) | — | — | — | ENE 7 | ENE 7 | ENE 6 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | NE 7 | NE 8 |
— | — | — | 192 | 166 | 201 | 395 | 388 | 503 | 293 | 349 | 482 | 471 | 362 | 493 | 392 | 322 | 287 | 229 | 136 | 136 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 19 | 15 | 48 | 50 | 47 | 55 | 59 | 55 | 55 | 59 | 55 | 49 | 55 | 47 | 47 | 47 | 47 | 47 | 47 | 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.










