
Surf Forecasts:
Number Threes surf forecast from 21 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 8AM (local time) - 6ft (1.8m), 13s period, E swell with cross-offshore winds.
- Most powerful swell: Monday 27 Jul, 2PM (local time) - 6ft (1.8m), 14s period, E swell with 1,321 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 8AM (local time) - 6ft (1.8m), 13s period with E swell.
Best Forecast Surf Conditions for Number Threes this week:
The surf forecast for Number Threes over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 8AM. The primary swell is predicted to be 1.8m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Number Threes 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-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 8s period and expected on Saturday (Jul 25) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 28th Jul) | 6ft (1.8m) 13s |
| Best Surf | 8AM (Tue 28th Jul) | 6ft (1.8m) 13s |
| Most Powerful | 2PM (Mon 27th Jul) | 6ft (1.8m) 14s |
Table - best surf conditions forecast for Number Threes over the next 16 days.
The Lowdown
Right, let’s have a proper look at what Number Threes (reef) has cooking over the next couple of weeks. It’s a consistent spot, advanced only, and it’s exposed to the swell – so when it’s on, it’s on. Water temp’s sitting around 80°, which is pretty much bang on average for this time of year, so no nasty surprises there.
The first few days ain’t worth paddling out for. Tuesday the 21st through to Thursday the 24th are a write-off – weak swell, messy conditions, and that cross-off wind stays stubborn. The combined wave energy’s barely getting going (around 537 to 1004), and the swell’s either too small or coming from the wrong direction. Honestly, it’s a frustrating start.
Then Friday the 24th afternoon things start to change. The swell jumps to 6 ft from the ENE, but with a short period of only 7 seconds – it’s a bit junky. The following Saturday morning the 25th sees similar, 7 ft from the ENE, period still short (8 secs). The energy’s building though, hitting 1146, but the wind’s still cross-off and fresh. It’s trying, but not clean enough to get excited about.
Sunday the 26th and Monday the 27th keep the swell going, 4 ft to 6 ft from the E and ENE, periods between 14 and 16 seconds – that’s proper groundswell. But again, that persistent cross-off wind, moderate to fresh, is just stopping it from being special. The energy’s high, 1294 to 1554, so there’s plenty of push, but the quality’s lacking.
Now, Tuesday morning the 28th – that’s your standout. The swell’s a solid 6 ft from the E with a period of 13 seconds, and the wind drops right back to a light breeze out of the NE, keeping it cross-off and clean. The combined energy is a meaty 1281 – strong, powerful. This is the best on offer. The conditions are excellent for experienced surfers, and with the reef setup, those longer-period waves will line up nicely. It’s a genuine window of quality.
Wednesday the 29th holds similar size but the wind picks back up to moderate breeze, so it’s a step down. Thursday the 30th sees the swell fading to 5 ft with a shorter period, energy dropping to 696.
After that, things go quiet again from Friday the 31st through the first few days of August – small, weak SSW swell, energy under 200, just not worth it. Then from Saturday the 1st of August through Monday the 3rd, the swell pumps back up to 7 ft to 10 ft, but it’s all short-period ENE windswell (7 to 9 seconds) with strong breezes. For the advanced crew, that’s going to be wild and bumpy – maybe more fun for kite surfing than paddle surfing. Energy’s strong, 803 to 1179, but it’s raw.
The last few days, Tuesday the 4th and Wednesday the 5th, fade back down to 4 ft to 5 ft, with lighter winds but poor quality. Nothing to rush for.
So if you’re keen, get on Tuesday morning the 28th of July. That’s the session. Clean, punchy, and proper reef waves.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue morning. Warm (max 26°C on Tue morning, min 24°C on Wed night). Mainly strong winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 26°C on Fri afternoon, 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-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 | cross-off |
High Tide | 11:13AM0.49m | 8:56PM0.27m | 12:12PM0.54m | 10:06PM0.22m | 1:02PM0.59m | 11:46PM0.19m | 1:44PM0.62m | 00:59AM0.18m | 2:22PM0.66m | 1:51AM0.19m | 2:56PM0.68m | 2:32AM0.21m | 3:29PM0.70m | 3:10AM0.23m | |||||||
Low Tide | 6:20PM0.26m | 4:02AM0.05m | 8:25PM0.21m | 9:13PM0.17m | 5:34AM0.05m | 9:41PM0.14m | 6:23AM0.04m | 10:05PM0.12m | 7:08AM0.02m | 10:27PM0.11m | 7:51AM0.01m | 10:49PM0.10m | |||||||||
6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 7:14 | — | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | |
mm | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 1 | — | — |
Temp °C | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 26 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 25 | 24 | 23 | 22 | 23 | 21 | 21 | 21 | 21 | 23 | 21 | 22 | 22 | 23 | 23 | 22 | 23 | 23 | 23 | 24 |
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) | 3 | 2 | 31 | 39 | 35 | 31 | 40 | 42 | 31 | 39 | 42 | 33 | 32 | 42 | 32 | 31 | 126 | 31 | 1 | 31 | 1 |
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.










