Surf Forecasts:
Number Threes surf forecast from 27 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 1.6m 6s period and expected on Friday (Aug 28) at 11PM.
| 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 break it down.
First off, the water temp at Number Threes is sitting around 81°F, which is pretty much normal for this time of year – nothing to write home about.
Now, looking at the 16-day window, we’ve got a bit of a mixed bag. The first few days have some south swell rolling in, but the conditions are marginal. Wednesday the 26th through Thursday the 27th see a solid long-period S swell (17-18 seconds) but the wave heights are small – 2ft to 4ft. The wind is a fresh cross-off from the ENE, which would normally have me stoked, but the combined energy is only moderate (602 to 898) and the scores are low. It’s just not doing enough to get the heart pumping. Honestly, it’s one of those “maybe if you’re desperate” situations.
Then we hit a bit of a lull. From Friday the 28th all the way through to Saturday the 5th of September, the swell drops off or shifts to a short-period, wind-driven ENE swell. The heights range from 3ft to 6ft, but the period is short (6-9 seconds), which means weak, choppy waves. The wind stays cross-off and fresh, but the energy is moderate at best, and the surf quality is poor to marginal. This stretch is a write-off for decent waves – you’d be better off staying home.
Now, there’s a glimmer of hope on Sunday the 6th of September. A new SSW groundswell arrives with a long period of 17 seconds and wave heights around 3ft. The wind is light and cross-onshore, so it’s not perfect, but the energy is moderate (619-634). By Monday the 7th, the swell holds at 3ft to 3ft with a period of 15 seconds, and the wind swings lighter cross-shore. This is where we see the best potential. The waves will be clean with that long-period groundswell, and the Number Threes reef setup should handle it well. It’s not big, but it’ll be fun and shaped nicely. The energy is moderate (644-701), so there’s some push.
After that, Tuesday the 8th has a bit of leftover SSW swell, but it’s fading. Then from Wednesday the 9th through Thursday the 10th, we’re back to ENE windswell with poor conditions and strong winds. Nothing to get excited about.
So, the standout? Monday the 7th of September is your best bet. The swell direction is SSW (17 degrees off the optimum SSE), the period is solid at 15 seconds, and the light cross-shore wind will keep things clean. The waves will be small but well-formed, and the reef at Number Threes will give them some shape. It’s not a day for the big guns, but for a fun, mellow session, that’s the call.
Stay safe out there.
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Wed afternoon, min 25°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sat afternoon, min 25°C on Sat night). Mainly strong winds. | |||||||||||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 |
Wave Graph | ||||||||||||||||||||
307 | 351 | 716 | 427 | 482 | 260 | 329 | 253 | 252 | 265 | 326 | 229 | 217 | 229 | 286 | 458 | 444 | 489 | 444 | 444 | |
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 | 3:24PM0.68m | 3:31AM0.37m | 3:53PM0.66m | 4:08AM0.41m | 4:20PM0.62m | 4:47AM0.46m | 4:49PM0.57m | 5:30AM0.50m | 5:18PM0.51m | 6:18AM0.53m | 5:48PM0.44m | 7:14AM0.56m | 6:20PM0.36m | |||||||
Low Tide | 10:12PM0.10m | 9:05AM0.06m | 10:32PM0.08m | 9:46AM0.07m | 10:54PM0.07m | 10:31AM0.10m | 11:17PM0.05m | 11:22AM0.14m | 11:42PM0.05m | 12:22PM0.19m | 00:10AM0.05m | 1:40PM0.23m | 00:43AM0.05m | |||||||
— | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 27 | 26 |
Feels °C | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 23 | 23 | 22 | 23 | 23 | 23 | 24 | 24 | 25 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 | E 13 | E 12 | S 12 | SSW 16 | S 12 | SSW 15 | SSW 15 | SSW 14 | S 10 | SSW 18 | S 18 | S 17 |
307 | 351 | 716 | 427 | 482 | 260 | 329 | 229 | 126 | 110 | 102 | 171 | 100 | 199 | 144 | 138 | 51 | 329 | 230 | 273 | |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | N 8 | SSW 12 | NNE 7 | E 16 | E 15 | E 14 | S 13 | S 13 | E 12 | E 11 | SSW 16 | S 11 | S 11 | S 11 | S 19 | S 10 | S 12 | S 10 |
135 | 137 | 6 | 47 | 10 | 78 | 109 | 146 | 85 | 89 | 106 | 65 | 162 | 59 | 57 | 82 | 192 | 48 | 75 | 31 | |
Swell 3 Height (m) Direction Period (s) | W 10 | SSW 16 | NW 9 | W 9 | E 17 | SSW 11 | SSW 19 | SW 19 | S 13 | S 12 | SSW 17 | SSW 12 | E 11 | ENE 10 | S 21 | SSW 19 | SW 14 | SSW 14 | SW 14 | SW 14 |
8 | 50 | 3 | 7 | 24 | 22 | 36 | 56 | 89 | 75 | 186 | 46 | 61 | 37 | 34 | 122 | 54 | 80 | 51 | 52 | |
Wind waves Height (m) Direction Period (s) | ENE 6 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 |
160 | 206 | 182 | 151 | 131 | 150 | 160 | 253 | 252 | 265 | 326 | 229 | 217 | 229 | 286 | 458 | 444 | 489 | 444 | 444 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 39 | 39 | 32 | 33 | 3 | 31 | 45 | 31 | 39 | 46 | 32 | 39 | 39 | 33 | 32 | 42 | 1 | 31 | 33 | 31 |
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.











