Surf Forecasts:
Number Threes surf forecast from 24 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.1m), 17s period, S swell with 716 kJ wave energy.
Best Forecast Surf Conditions for Number Threes this week:
The most powerful waves expected at Number Threes in the next 16 days are 1.1m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 8s period and expected on Friday (Aug 28) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 3.5ft (1.1m) 17s |
Table - best surf conditions forecast for Number Threes over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what Number Threes has got cooking for us over the next couple of weeks. I’ll be straight with you – it’s a bit of a slow burner, but there’s some real promise on the horizon if you can be patient.
The whole run starts off a bit rough. For the first few days, from Sunday the 23rd through to Tuesday the 25th, we’ve got a consistent 5ft to 7ft swell rolling in from the ENE, but the wind is a strong cross-offshore from the ENE, blowing at 25 mph. That’s just making a mess of things – the wave comment says "poor surf conditions" and I’m feeling that. The water is sitting at a warm 81°, which is pretty normal for this time of year – nothing unusual there.
Wednesday the 26th is where things start to shift. The morning still has that junky ENE wind and small 2ft surf, but by Wednesday afternoon we get a proper change. A long-period groundswell from the S, 18 seconds, starts to push in. It’s only 2ft, but with that long period it’s got some grunt. The combined energy is moderate (622). It’s still labelled as "marginal," but you can feel the tide turning, so to speak. This S swell sticks around into Thursday the 27th with 4ft and 17-second periods, and the wind finally eases to a 19 mph cross-off. Still not perfect, but we’re getting closer.
Now, here’s where the real standout sits. If you can hold out until the first week of September, you’re going to be rewarded. Come Tuesday the 1st of September, the swell jumps up to 7ft from the ENE with a combined energy of 1246 – that’s strong, solid wave energy. The wind remains a cross-off from the ENE at 22 mph. It’s still cross-off, not ideal, but the size and power are there. The rating for Number Threes is 4 out of 5 – it’s an advanced reef break that is consistent. It’s exposed to the swell, and the optimum direction is SSE, but we’re getting ENE, so it's a bit of a mismatch. Still, for sheer power, this is the best window.
But the true gem – and I mean the one I’d circle on the calendar – is Saturday the 6th of September. We get a pumping 10ft swell from the ENE, with a 11-second period, and the combined energy hits a massive 2397. That’s very strong, powerful surf. The wind is still cross-off from the ENE at 19 mph. For a reef break, this is going to be a heavy, expert-only day. The swell is over 8ft, so this is strictly for the big dogs. If you’re not comfortable in serious, powerful waves, stay on the sand. This spot is often crowded, and on a day like that, you can expect company.
So to sum it up: the first week is a write-off. From the 23rd to the 29th of August, it’s mostly poor with that persistent ENE wind. There’s a brief window of S groundswell on the 26th and 27th, but it’s small and marginal. The real action kicks off on the 1st of September and builds right through to the 7th. The best of the best is Saturday the 6th of September – that 10ft swell is the one to watch. The rest of the second week has consistent 7ft to 8ft stuff, so if you miss the big day, there’s still plenty of juice.
Keep an eye on the forecast, but for now, save your energy for that first week of September. Rusty out.
Short Range ForecastMostly dry. Warm (max 27°C on Sun afternoon, min 25°C on Mon night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Wed afternoon, min 25°C on Wed night). Mainly fresh winds. | |||||||||||||||||||
Sun 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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 | ENE 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | ||||||||||||||||||||
349 | 307 | 247 | 240 | 218 | 423 | 310 | 317 | 239 | 307 | 351 | 716 | 427 | 482 | 260 | 324 | 299 | 227 | 227 | 247 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:46AM0.26m | 2:26PM0.67m | 2:21AM0.29m | 2:56PM0.68m | 2:55AM0.33m | 3:24PM0.68m | 3:31AM0.37m | 3:53PM0.66m | 4:08AM0.41m | 4:20PM0.62m | 4:47AM0.46m | 4:49PM0.57m | ||||||||
Low Tide | 9:18PM0.14m | 6:59AM0.08m | 9:35PM0.13m | 7:43AM0.06m | 9:53PM0.11m | 8:24AM0.05m | 10:12PM0.10m | 9:05AM0.06m | 10:32PM0.08m | 9:46AM0.07m | 10:54PM0.07m | 10:31AM0.10m | 11:17PM0.05m | |||||||
— | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 |
Feels °C | 25 | 24 | 25 | 26 | 26 | 23 | 23 | 22 | 21 | 22 | 22 | 24 | 23 | 22 | 23 | 23 | 22 | 21 | 23 | 21 |
Swell 1 Height (m) Direction Period (s) | 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 | S 13 | E 13 | S 12 |
191 | 100 | 166 | 156 | 127 | 85 | 142 | 121 | 215 | 307 | 351 | 716 | 427 | 482 | 260 | 324 | 225 | 85 | 90 | 102 | |
Swell 2 Height (m) Direction Period (s) | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 7 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | NNE 8 | SSW 12 | NNE 8 | SSW 11 | E 13 | E 12 | E 14 | S 13 | E 13 |
35 | 56 | 49 | 47 | 16 | 146 | 81 | 81 | 165 | 135 | 137 | 7 | 47 | 11 | 22 | 32 | 26 | 104 | 89 | 121 | |
Swell 3 Height (m) Direction Period (s) | S 11 | SSW 15 | SSW 18 | SSE 8 | SSE 12 | SSE 12 | SSE 6 | SSW 18 | SSE 12 | SSE 6 | SSW 16 | WNW 10 | NNE 8 | W 10 | NNE 7 | SSW 19 | SW 19 | S 13 | S 12 | SSW 17 |
22 | 71 | 62 | 23 | 46 | 29 | 8 | 109 | 14 | 4 | 50 | 9 | 13 | 9 | 9 | 36 | 56 | 89 | 75 | 186 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | E 6 | E 7 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
349 | 307 | 247 | 240 | 218 | 423 | 310 | 317 | 239 | 176 | 194 | 160 | 144 | 161 | 107 | 140 | 299 | 227 | 227 | 247 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 126 | 33 | 39 | 31 | 31 | 39 | 39 | 32 | 39 | 39 | 31 | 33 | 31 | 31 | 32 | 126 | 32 | 33 | 39 | 33 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Number Threes Surf forecast
The above surf forecast table for Number Threes provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Number Threes can be found by selecting the local surf guide option on the grey menu. Our Number Threes 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 (Number Threes) 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 Number Threes 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.
Number Threes is 5 km (3 miles) from Honolulu. If you plan a vacation in Oahu, look for hotels and other accommodation in Honolulu. Honolulu has rooms for a wide range of budgets as well as car hire and transport links.











