
Surf Forecasts:
Number Fours surf forecast from 24 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 5AM (local time) - 8ft (2.5m), 11s period, ENE swell with offshore winds.
- Most powerful swell: Wednesday 29 Jul, 8AM (local time) - 10ft (3.0m), 11s period, ENE swell with 1,857 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 5AM (local time) - 8ft (2.5m), 11s period with ENE swell.
Best Forecast Surf Conditions for Number Fours this week:
The surf forecast for Number Fours over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 29) at 5AM. The primary swell is predicted to be 2.5m and 11s period with a secondary swell of 0.7m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Number Fours in the next 16 days are 3.0m 11s and forecast to arrive on Wednesday (Jul 29) at 8AM. 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 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 29th Jul) | 8ft (2.5m) 11s |
| Best Surf | 5AM (Wed 29th Jul) | 8ft (2.5m) 11s |
| Most Powerful | 8AM (Wed 29th Jul) | 10ft (3.0m) 11s |
Table - best surf conditions forecast for Number Fours over the next 16 days.
The Lowdown
Alright, Rusty here, lookin' at the forecast for Number Fours. Let's be real, it's a bit of a mixed bag, but we've got a couple of windows that are worth watchin' for.
First off, the water temp is sittin' at 80°, which is pretty much spot on for this time of year. Feels like summer.
The first few days are a bit of a write-off, honestly. Thursday the 23rd through to the 27th, we're stuck with a persistent cross-off breeze from the ENE, mostly a Fresh to Strong breeze, with swell all over the shop. The energy is there, but it's messy. We see a combined energy of 963 on Thursday afternoon, but the wind is just too strong, and the swell is either too short period or from the wrong direction. It's clean, but it's not surfable. Those scores tell the story – it's a hard pass for a while.
Saturday the 27th and Monday the 28th are similar, just a grind of mid-period swell and cross-off wind. Not worth paddling out for.
Now, here's where it gets interesting. The standout window is the morning of Wednesday the 29th of July. We're looking at a solid 10ft swell from the ENE, with a period of 11 seconds, and the wind switches to an offshore from the N, only 12 mph. That's a game-changer. The combined energy jumps to 1898, which is serious. The water will be clean, and for experienced surfers, this is the real deal. It's a reef, and with that size and direction, it's going to be a proper session. Just be aware, it's a fairly consistent spot, but crowds can show up sometimes. Don't be a kook and get in over your head, that's an expert-only day.
The next few days after that, from the 30th to the 5th of August, slide back into mediocrity. The wind stays cross-off, the swell drops back to 5ft to 7ft, and the period goes short again. The energy is moderate, but the quality isn't there. It's a long stretch of just average surf.
Then, we get another promising window. Thursday the 6th of August. The morning sees a 5ft swell from the ENE, period of 10 seconds, and a very light breeze from the ENE at only 6 mph. That's verging on glassy. The combined energy is 708, and it's described as "very good surf conditions." The afternoon holds up with a similar swell and a gentle breeze. This is a solid call for a fun, clean surf, and it's a lot more accessible for the intermediate crew.
The final day on the 7th of August is a letdown. The swell dies off to a pathetic 1ft with very weak energy (91 and 43), and the direction is all over the place. A total flat spell to end the run.
So, the two standout sessions are the morning of the 29th of July for the big-wave crew, and the 6th of August for a cleaner, more manageable day. The rest, you're better off waitin' for the next forecast.
Rusty, signing off.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 26°C on Thu afternoon, min 24°C on Thu night). Mainly strong winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Wed morning. Warm (max 27°C on Tue afternoon, min 24°C on Sun night). Mainly fresh winds. | |||||||||||||||||||
Thu 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 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) | SSW 20 | SSW 18 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | SSW 18 | ENE 8 | SSW 16 | E 14 | E 14 | E 13 | E 13 | ENE 12 | ENE 12 | E 13 | E 12 | ENE 11 | ENE 10 | ENE 8 |
Wave Graph | ||||||||||||||||||||
395 | 464 | 348 | 417 | 456 | 392 | 572 | 547 | 469 | 407 | 452 | 507 | 485 | 1256 | 1114 | 1070 | 1248 | 1694 | 894 | 385 | |
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 | off | on | cross-on |
High Tide | 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 | 3:59PM0.70m | 3:49AM0.25m | 4:29PM0.70m | 4:28AM0.28m | |||||||
Low Tide | 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 | 8:31AM0.01m | 11:11PM0.09m | 9:09AM0.01m | 11:34PM0.08m | |||||||
— | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | |
7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | |
mm | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | 1 | 1 | 8 |
Temp °C | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 27 | 25 | 25 | 27 | 26 |
Feels °C | 21 | 22 | 22 | 21 | 22 | 23 | 23 | 23 | 22 | 22 | 22 | 24 | 24 | 23 | 24 | 26 | 24 | 26 | 31 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | E 14 | E 14 | E 13 | E 13 | SSW 14 | SSW 14 | E 13 | E 12 | ENE 11 | ENE 10 | ENE 8 |
395 | 464 | 329 | 340 | 232 | 391 | 572 | 547 | 469 | 407 | 452 | 507 | 485 | 213 | 143 | 1070 | 1248 | 1694 | 894 | 385 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 11 | S 12 | S 12 | S 20 | SSW 16 | S 11 | E 15 | E 15 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSE 10 | SSE 10 | S 14 | SSW 14 | S 13 | S 14 | SSW 13 |
125 | 56 | 143 | 102 | 296 | 223 | 61 | 72 | 348 | 341 | 333 | 225 | 222 | 11 | 10 | 179 | 147 | 126 | 195 | 133 | |
Swell 3 Height (m) Direction Period (s) | SW 16 | S 13 | SSW 15 | S 21 | S 12 | S 11 | E 13 | E 12 | S 11 | S 11 | S 10 | S 10 | SSE 10 | NNE 10 | SSE 10 | SE 9 | SSE 10 | S 16 | SSW 20 | SSE 5 |
127 | 85 | 93 | 231 | 100 | 63 | 54 | 47 | 20 | 20 | 8 | 8 | 11 | 38 | 10 | 3 | 9 | 76 | 37 | 13 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 12 | ENE 12 | NNE 9 | NNE 7 | SE 7 | SSE 4 | — |
316 | 350 | 348 | 417 | 456 | 392 | 450 | 522 | 372 | 329 | 325 | 282 | 259 | 1256 | 1114 | 227 | 163 | 2 | 9 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 46 | 31 | 42 | 48 | 31 | 39 | 39 | 31 | 32 | 39 | 31 | 31 | 126 | 1 | 1 | 34 | 1 | 0 | 16 | 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.










