
Surf Forecasts:
Number Fours surf forecast from 3 Jul 2026:
- Most powerful swell: Wednesday 8 Jul, 2AM (local time) - 8ft (2.4m), 8s period, ENE swell with 655 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 Wednesday (Jul 08) at 2AM. 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 Friday (Jul 03) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Wed 8th 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
Alright, Rusty here, let's get into it.
We're looking at a 16-day window, but honestly, it's a quiet one. The first few days have some swell but the wind is a problem, and the call outs are all pretty poor. There's no real stand-out session in the near term. The only break we've got intel on is Number Fours, a reef setup that needs a solid SSE swell to really light up.
The water temp is sitting right on 80°, which is pretty much spot on average for this time of year, nothing unusual there.
Friday July 3rd kicks off with a bit of swell at 5 ft from the ENE, but it's short period at 8 seconds and that wind is a stiff 16 mph cross-off. It's clean, but the energy is only moderate (514). Not worth getting excited about. The afternoon is more of the same, just a touch more wind.
Saturday July 4th morning has a bump to 6 ft, but it's still short-period and that wind is up to 19 mph. The combined energy is moderate (899), but the conditions are just not there. The afternoon sees a shift to a tiny 2 ft S swell with a very long 20-second period, but the wind is still ruining any chance of it being clean.
After that, from Sunday July 5th right through to Thursday July 9th, it's just poor conditions. Winds are consistently strong, in the 22-25 mph range. There's a window on Monday July 6th where the swell hits 7 ft, but with a 7-8 second period and that howling wind, it's a messy, blown-out mess. For a reef break like Number Fours, that's just not going to be fun.
The second week doesn't offer much hope. From Friday July 10th to Saturday July 18th, the forecast is a long stretch of marginal to poor surf. There's a bit of a tease on Monday July 13th and Tuesday July 14th with some waist-high 3 ft SW swell with a long 15-16 second period, and the wind drops to a more manageable 12 mph. The combined energy is still low (358-236), so it's weak and a long time between sets. It'll be clean but very lacking in power.
If you're desperate for a paddle, Wednesday July 15th afternoon shows a bit of a bump in energy as a short-period 5 ft ENE swell comes in, but it's still marginal. The best-looking day for size is Thursday July 16th, with 7 ft ENE swell showing up, and the wind is finally light enough at 12-16 mph to keep it reasonably clean. The energy is moderate (697). That's probably the pick of a very ordinary bunch, but with that short period (7 secs), it'll be lumpy and won't have the power of a proper groundswell.
All in all, we're looking at a lot of days of nothing special. The forecasters are calling it all pretty poor, so don't hold your breath. It's one of those stretches where you'd be better off keeping the board in the car and only checking it if the wind changes.
Stay patient.
Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Fri afternoon, min 24°C on Fri night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Mon morning, min 24°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||||
Friday 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | |||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 20 | SSW 19 | SSW 18 | SSW 18 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | |||||||||||||||||||||
253 | 271 | 310 | 336 | 377 | 486 | 418 | 408 | 475 | 417 | 551 | 498 | 459 | 557 | 655 | 426 | 379 | 428 | 369 | 344 | 286 | |
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 | 6:33PM0.61m | 7:25AM0.23m | 7:06PM0.55m | 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 | ||||||||
Low Tide | 11:12AM0.06m | 1:57AM0.03m | 12:01PM0.11m | 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 | ||||||||
5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | |
— | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 25 |
Feels °C | 24 | 24 | 23 | 22 | 22 | 21 | 22 | 22 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 21 | 23 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 20 | 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 |
168 | 208 | 146 | 212 | 377 | 486 | 418 | 408 | 371 | 337 | 402 | 284 | 280 | 269 | 195 | 192 | 187 | 125 | 113 | 112 | 75 | |
Swell 2 Height (m) Direction Period (s) | SW 13 | SSW 12 | SSW 12 | S 21 | SSW 16 | SSW 14 | SSW 14 | SW 14 | SSW 13 | SSE 9 | SSE 9 | SSE 9 | SE 8 | SE 8 | SE 10 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | W 14 |
85 | 60 | 59 | 326 | 162 | 69 | 138 | 51 | 34 | 8 | 8 | 8 | 3 | 3 | 4 | 7 | 12 | 7 | 6 | 11 | 34 | |
Swell 3 Height (m) Direction Period (s) | SSE 9 | S 12 | SSW 22 | SSW 16 | SSW 11 | SW 15 | SSE 11 | SSW 11 | SSE 10 | SSW 13 | W 10 | SW 9 | S 10 | S 10 | — | W 18 | S 18 | W 17 | W 15 | W 15 | S 15 |
8 | 11 | 164 | 25 | 23 | 54 | 11 | 11 | 9 | 17 | 2 | 3 | 2 | 2 | — | 6 | 6 | 6 | 18 | 39 | 17 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
253 | 271 | 310 | 336 | 310 | 353 | 327 | 389 | 475 | 417 | 551 | 498 | 459 | 557 | 655 | 426 | 379 | 428 | 369 | 344 | 286 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 31 | 42 | 31 | 31 | 39 | 31 | 39 | 44 | 39 | 126 | 127 | 31 | 42 | 46 | 39 | 39 | 42 | 31 | 32 | 39 | 31 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










