
Surf Forecasts:
Number Fours surf forecast from 5 Jul 2026:
- Most powerful swell: Tuesday 7 Jul, 5PM (local time) - 8ft (2.4m), 8s period, ENE swell with 640 kJ wave energy.
Best Forecast Surf Conditions for Number Fours this week:
The most powerful waves expected at Number Fours in the next 16 days are 2.4m 8s and forecast to arrive on Tuesday (Jul 07) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Sunday (Jul 05) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Tue 7th Jul) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Number Fours over the next 16 days.
Updates in hr min s Forecast update imminent
G’day, Rusty here. Let’s be straight with you – this outlook for Number Fours is a tough one. We’ve got a 16-day window, but the first real chance of anything surfable doesn’t show up until Sunday, July 12th. Before that, it’s pretty much a write-off for paddle surfing.
From Sunday morning, July 5th right through to Saturday, July 11th, the wind is hammering from the ENE at 25 to 25 mph, which is a constant cross-off breeze. Day after day, the swell is coming from ENE too, mostly around 6ft to 8ft, but the period is short – 6 to 8 seconds. That’s bumpy, weak, onshore rubbish. The wave energy is moderate, hitting values between 443 and 1007, but it’s just not translating into quality waves. A few afternoons get a “marginal” call, but honestly, with that wind, it’s not worth paddling out. This setup actually looks more interesting for kite surfing than paddle surfing.
Finally, on Sunday, July 12th, we see a flicker. The swell swings around to the SSW at 3ft, and the period jumps to 16 seconds. That’s a proper long-period groundswell. The wind is still ENE at 19 mph, so it’s cross-off, but the energy is still moderate at 689 and 674. This is the standout of the entire window. For a reef break that likes SSE swell, this SSW direction is off its optimum, but that long period will wrap in and create some clean lines. It’s an intermediate spot that’s fairly consistent, but be warned – crowds are possible here, especially on a Sunday. The water temp anomaly isn’t given, so we’ll call it about average for early July.
Monday, July 13th keeps that same 3ft SSW swell with a 15-second period, but the wind picks up a bit and we get some clouds. The energy drops to around 495 and 641, so still marginal but surfable if you pick your tide.
From Tuesday, July 14th right through to Monday, July 20th, it’s back to the same old story. The swell goes back to short-period ENE windswell, 5ft to 6ft, and the wind stays ENE at 15-19 mph. A couple of mornings get a “marginal” tag, but the period is mostly 6-7 seconds, and the energy is weak to moderate, ranging from 268 to 662. Honestly, for this part of the forecast, just keep the board in the car and wait for a change. The 2ft to 2ft SSW swell on Thursday, July 16th with a 16-second period is a tease, but the energy is too low to get excited about.
So, if you’re keen, your one shot is Sunday, July 12th and maybe Monday, July 13th for that long-period SSW groundswell. Everything else is a battle with the wind. Rusty out.
Short Range ForecastMostly dry. Warm (max 25°C on Sat night, min 24°C on Sat night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Fri morning, min 24°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Sat 11 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SSW 19 | SSW 18 | SSW 18 | SSW 16 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 |
Wave Graph | |||||||||||||||||||||
486 | 418 | 408 | 457 | 516 | 597 | 512 | 566 | 640 | 526 | 363 | 379 | 404 | 379 | 294 | 319 | 327 | 372 | 514 | 487 | 397 | |
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 | 8:31AM0.28m | 7:40PM0.49m | 9:42AM0.35m | 8:17PM0.41m | 10:50AM0.43m | 9:01PM0.34m | 11:51AM0.52m | 10:00PM0.26m | 12:45PM0.61m | 11:18PM0.20m | 1:36PM0.69m | 00:40AM0.17m | 2:24PM0.76m | ||||||||
Low Tide | 2:26AM0.02m | 1:05PM0.17m | 2:56AM0.01m | 2:35PM0.23m | 3:29AM-0.00m | 4:35PM0.25m | 4:06AM-0.02m | 6:43PM0.23m | 4:48AM-0.04m | 8:17PM0.17m | 5:36AM-0.06m | 9:18PM0.12m | 6:28AM-0.08m | ||||||||
— | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | |
7:16 | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — |
Temp °C | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 |
Feels °C | 23 | 21 | 21 | 21 | 21 | 20 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 22 | 21 | 22 | 25 | 24 | 23 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | S 13 | S 12 | S 12 | S 12 | S 12 | SSW 11 | SW 19 | SSW 18 | SW 18 |
486 | 418 | 408 | 457 | 337 | 402 | 284 | 280 | 273 | 250 | 189 | 187 | 125 | 112 | 110 | 75 | 71 | 42 | 184 | 221 | 316 | |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SW 14 | SSW 13 | SSE 9 | SSE 9 | SSE 8 | NW 9 | SE 8 | SSE 10 | SE 8 | SSE 8 | W 15 | SSE 8 | W 14 | W 13 | W 13 | SW 21 | S 12 | W 14 | W 14 |
188 | 138 | 51 | 34 | 8 | 8 | 7 | 3 | 3 | 9 | 3 | 7 | 17 | 11 | 15 | 13 | 13 | 67 | 42 | 62 | 61 | |
Swell 3 Height (m) Direction Period (s) | SSW 11 | E 9 | SSW 11 | SSE 10 | SSW 13 | W 10 | NW 9 | SE 10 | S 10 | — | W 18 | S 18 | SE 8 | S 16 | SSE 6 | W 16 | SSW 21 | S 13 | W 13 | S 12 | S 12 |
12 | 15 | 11 | 9 | 17 | 2 | 3 | 4 | 2 | — | 6 | 6 | 3 | 21 | 3 | 20 | 45 | 31 | 55 | 44 | 43 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 |
294 | 306 | 387 | 333 | 516 | 597 | 512 | 566 | 640 | 526 | 363 | 379 | 404 | 379 | 294 | 319 | 327 | 372 | 514 | 487 | 397 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 31 | 39 | 48 | 33 | 126 | 127 | 39 | 126 | 126 | 39 | 39 | 42 | 32 | 39 | 39 | 31 | 31 | 39 | 39 | 44 | 46 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Number Fours Surf forecast
The above surf forecast table for Number Fours provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Number Fours can be found by selecting the local surf guide option on the grey menu. Our Number Fours 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 Fours) 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 Fours 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 Fours 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.











