
Surf Forecasts:
Number Fours surf forecast from 6 Jul 2026:
- Most powerful swell: Monday 6 Jul, 2PM (local time) - 8ft (2.4m), 8s period, ENE swell with 620 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 Monday (Jul 06) 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 1.8m 7s period and expected on Saturday (Jul 11) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Mon 6th 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 folks, Rusty here. Let's talk about what Number Fours has in store for us over the next couple of weeks. Straight up, it’s a bit of a grim outlook for the most part. We’re looking at a long stretch of onshore, messy conditions that won’t give you much to work with.
The water temp is sitting at 80°, which is pretty standard for this time of year.
Right from the get-go on Monday the 6th of July, it’s a tough watch. We’ve got a 7ft ENE swell wrapping in, but it's being hammered by a strong 25 mph cross-off breeze. Even though the wave faces might look clean, the wind is just ruining it. This same story plays out day after day right through the first week and into the second. The wind stays locked in from the ENE at 19-25 mph, and the swell hangs around the 6ft to 7ft mark, but it’s all short-period junk at 7 seconds. The wave energy is moderate, hitting around 852 (moderate) on Monday morning, but it’s just not surfable. This is a solid stretch of poor conditions.
We do see a bit of a change around Tuesday the 14th of July. The wind finally drops to a gentle 9 mph cross-off, and for the morning, the swell drops to 2ft from the SW with a long 14-second period. That combo earns a "very good" call, and this is our standout. For a moment, there’s some shape and possibility. But it’s a small window. The afternoon goes back to marginal, and the following days see some mixed-up, weak swell from the SW and SSE with very long periods (14-18 seconds) but small heights between 2ft and 2ft. The wave energy drops right back to weak levels, like 294 (weak) on the 16th. These long-period groundswells are tricky at Number Fours as it’s a reef setup, but when it’s that small, it’s more of a micro-session.
Don't get your hopes up for the final weekend of the forecast either. The 18th through the 20th of July sees the onshore winds and short-period ENE swell come roaring back, with energy picking back up to moderate levels but all locked into ugly conditions.
The Pick:
If you’re desperate for a paddle, keep your eye on Tuesday the 14th of July. That morning, when the wind goes light and the swell turns into a clean, long-period groundswell from the SW, you might find a few fun ones at Number Fours (reef). It’s only 2ft, so it’s a cruisy session, and you won’t be fighting the wind. For the rest of the 16 days? Honestly, it’s mostly a write-off. You're better off waiting for the next system.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Mon morning, min 24°C on Mon morning). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat morning. Warm (max 26°C on Fri afternoon, min 24°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||
Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | |||||||||||||||
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 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | SW 17 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph | |||||||||||||||||||||
489 | 551 | 456 | 566 | 481 | 498 | 417 | 379 | 456 | 327 | 294 | 344 | 353 | 387 | 444 | 475 | 352 | 309 | 432 | 475 | 512 | |
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 | 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 | 1:50AM0.16m | 3:11PM0.80m | 2:52AM0.17m | |||||||
Low Tide | 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 | 10:04PM0.07m | 7:21AM-0.09m | 10:45PM0.04m | ||||||||
5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | |
— | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 21 | 21 | 20 | 21 | 22 | 20 | 21 | 21 | 21 | 22 | 22 | 24 | 24 | 24 | 23 | 24 | 23 | 23 | 23 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | 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 | SW 17 | SW 16 | SW 16 | SW 16 |
337 | 402 | 284 | 280 | 273 | 250 | 192 | 187 | 125 | 113 | 112 | 75 | 71 | 42 | 184 | 221 | 316 | 309 | 376 | 367 | 353 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SSE 8 | SSE 10 | SE 8 | SSE 10 | SE 9 | SSE 8 | W 15 | SSE 8 | W 14 | W 13 | W 13 | SW 21 | S 12 | W 14 | S 12 | W 13 | S 11 | SSE 12 | SSE 12 |
9 | 8 | 7 | 9 | 3 | 9 | 3 | 7 | 17 | 6 | 15 | 13 | 13 | 68 | 41 | 63 | 44 | 54 | 23 | 28 | 28 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | W 10 | NW 9 | NW 9 | S 10 | — | W 18 | SE 6 | S 10 | S 16 | SSE 6 | S 15 | SSW 21 | W 13 | W 13 | S 12 | W 13 | S 11 | W 12 | W 12 | W 12 |
17 | 2 | 3 | 3 | 2 | — | 6 | 1 | 2 | 21 | 3 | 17 | 45 | 29 | 55 | 44 | 54 | 22 | 28 | 26 | 26 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 |
489 | 551 | 456 | 566 | 481 | 498 | 417 | 379 | 456 | 327 | 294 | 344 | 353 | 387 | 444 | 475 | 352 | 297 | 432 | 475 | 512 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 126 | 127 | 31 | 126 | 42 | 39 | 39 | 42 | 32 | 39 | 39 | 31 | 31 | 42 | 31 | 31 | 39 | 31 | 31 | 31 | 1 |
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.










