Surf Forecasts:
Middles/Generals surf forecast from 7 Sep 2026:
- Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 13ft (4.0m), 13s period, SSW swell with 5,172 kJ wave energy.
Best Forecast Surf Conditions for Middles/Generals this week:
The most powerful waves expected at Middles/Generals in the next 16 days are 4.0m 13s and forecast to arrive on Tuesday (Sep 08) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 14s period and expected on Monday (Sep 07) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Tue 8th Sep) | 13ft (4.0m) 13s |
Table - best surf conditions forecast for Middles/Generals over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break it down.
Look, for the next week and a half, you’re gonna be staring at a lot of lumpy, chopped-out surf. The first few days are basically a stormy mess. The real light in this 16-day window ain't until the 19th and 20th of September, which is a week and a half out.
Before that, it's a long dry spell. The only spot in the mix is Middles/Generals. On the 6th and 7th, we’ve got some swell – 6 to 8 feet of ENE groundswell (1761 to 2270 energy) with a solid 12-second period – but the wind is a fresh cross-onshore with thunderstorms. Ruined. Water temp is about average for this time of year, so nothing special there.
The wind stays nasty through the whole first week, with fresh cross-shore and cross-onshore breezes messing up every pulse. The 9th drops to 3 feet of SSW groundswell but it’s still choppy. The 12th and 13th shrink down to 2 to 3 feet – not worth getting wet.
Now, here’s the good word. Saturday, September 19th – that’s the one. Glassy conditions in the morning with a clean 3-foot SSW groundswell, 15-second period. That’s proper long-period groundswell. Wind is dead glass, so the surface will be like a mirror. The energy is moderate (423), but with that period and direction, the waves should have some nice shape. Since this is a point break setup, that long period works in your favor – clean sets, easier paddling. Crowds are likely here, so get there early. It’s small enough for intermediates.
Sunday, September 20th backs it up with more glass. Morning and afternoon are both dead calm with a 3 to 3-foot SSW groundswell, same 15-second period. Energy is a hair higher (449-452). Wind is glass. This is your best window for clean, fun waves in the whole outlook.
The 17th and 18th tease you with a long-period SSW swell (up to 628 energy, 16-18 seconds), but the wind is onshore or cross-shore. Only marginal at best.
So, the first week is a write-off. Your best bet is Saturday 19th and Sunday 20th of September at Middles/Generals – clean, glassy, and a good long-period groundswell. Worth hanging in for.
Rusty.
Short Range ForecastHeavy rain (total 35mm), heaviest during Sun night. Warm (max 27°C on Mon afternoon, min 24°C on Sun night). Winds decreasing (strong winds from the SSE on Mon night, light winds from the SE by Tue night). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Wed afternoon, min 25°C on Wed night). Winds decreasing (fresh winds from the ENE on Thu morning, light winds from the ESE by Sat morning). | |||||||||||||||||||
Sun 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 12 | ENE 12 | ENE 12 | ENE 12 | SSW 13 | S 10 | ENE 11 | ENE 10 | SSW 14 | SSW 13 | SSW 13 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1064 | 1338 | 1703 | 1461 | 5172 | 861 | 638 | 356 | 269 | 257 | 203 | 231 | 203 | 173 | 151 | 308 | 379 | 255 | 209 | 135 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 00:14AM0.26m | 12:48PM0.73m | 1:03AM0.31m | 1:30PM0.72m | 1:48AM0.38m | 2:07PM0.69m | 2:29AM0.44m | 2:41PM0.65m | 3:11AM0.50m | 3:13PM0.59m | 3:51AM0.55m | 3:42PM0.51m | 4:32AM0.57m | |||||||
Low Tide | 7:41PM0.09m | 5:40AM0.04m | 8:09PM0.07m | 6:40AM0.03m | 8:36PM0.05m | 7:34AM0.03m | 9:01PM0.04m | 8:25AM0.05m | 9:26PM0.04m | 9:14AM0.08m | 9:49PM0.03m | 10:05AM0.12m | 10:11PM0.04m | |||||||
 |  | | | |  |  |  | |  |  | | | | | | | | | | |
 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — |
mm | 3 | 14 | 5 | 3 | 8 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 26 | 24 | 25 | 28 | 27 | 25 | 27 | 30 | 31 | 29 | 27 | 24 | 23 | 23 | 23 | 24 | 23 | 29 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | ENE 12 | ENE 12 | SW 12 | ENE 12 | SSW 13 | ENE 11 | SSW 8 | ENE 10 | ENE 9 | ENE 8 | SSW 13 | E 12 | E 12 | SW 16 | ENE 7 | ENE 11 | ENE 11 | SW 15 | ENE 10 | ENE 10 |
| kJ | 1064 | 1338 | 497 | 1461 | 4001 | 785 | 380 | 339 | 186 | 176 | 195 | 141 | 101 | 214 | 151 | 308 | 379 | 242 | 209 | 135 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 14 | SSW 17 | SW 12 | ENE 12 | WSW 10 | ENE 11 | SSW 8 | SSW 14 | SSW 13 | E 13 | SSW 13 | SSW 13 | E 11 | SW 16 | SW 15 | SW 15 | NNE 8 | NNE 9 | NE 9 |
| kJ | 517 | 1048 | 498 | 678 | 1211 | 586 | 638 | 123 | 269 | 257 | 156 | 131 | 93 | 91 | 206 | 229 | 226 | 45 | 49 | 75 |
Swell 3 Height (m) Direction Period (s) | S 19 | S 18 | SSE 7 | SSW 16 | SSW 15 | SSW 15 | W 9 | SSW 14 | E 13 | E 13 | S 7 | SW 16 | SW 18 | SW 11 | E 11 | NNE 8 | SW 9 | SW 8 | SSW 16 | SSW 13 |
| kJ | 180 | 243 | 69 | 582 | 581 | 468 | 220 | 356 | 219 | 166 | 24 | 133 | 155 | 71 | 89 | 50 | 27 | 11 | 99 | 68 |
Wind waves Height (m) Direction Period (s) | — | — | ENE 12 | ENE 7 | SSW 13 | S 10 | — | — | — | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | — | — | ENE 10 | — | — |
| kJ | — | — | 1703 | 172 | 5172 | 861 | — | — | — | — | 203 | 231 | 203 | 173 | — | — | — | 255 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 55 | 5 | 132 | 42 | 62 | 109 | 6 | 3 | 5 | 5 | 16 | 48 | 16 | 19 | 48 | 48 | 16 | 5 | 5 | 5 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Middles/Generals Surf forecast
The above surf forecast table for Middles/Generals provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Middles/Generals can be found by selecting the local surf guide option on the grey menu. Our Middles/Generals 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 (Middles/Generals) 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 Middles/Generals 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.
Middles/Generals is 15 km (9 miles) from the city of Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.
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