
Surf Forecasts:
Ranches surf forecast from 2 Sep 2026:
- Best quality surf: Monday 7 Sep, 5PM (local time) - 5.5ft (1.7m), 13s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 11AM (local time) - 11ft (3.5m), 14s period, SW swell with 5,413 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 11AM (local time) - 4ft (1.2m), 8s period with NE swell.
Best Forecast Surf Conditions for Ranches this week:
The surf forecast for Ranches over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 02) at 11AM. The primary swell is predicted to be 1.2m and 8s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Ranches in the next 16 days are 3.5m 14s and forecast to arrive on Tuesday (Sep 08) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 12s period and expected on Tuesday (Sep 08) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 2nd Sep) | 4ft (1.2m) 8s |
| Best Surf | 5PM (Mon 7th Sep) | 5.5ft (1.7m) 13s |
| Most Powerful | 11AM (Tue 8th Sep) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ll be straight with you – the next ten days or so are pretty flat and ordinary around here for the most part. The first week is mostly small, weak, short-period slop that’s barely worth paddling out for. But hang in there, because Monday the 7th and Tuesday the 8th of September are the real standouts in this 16-day window, and they’re proper heavy.
Water temp is 81°F, which is normal for this time of year – no surprises in the warmth.
Right, kicking off Wednesday the 2nd and running right through to Sunday the 6th, it’s all waist-high mush. Swell heights are stuck around 2 to 4 ft, period is a short 6 to 8 seconds, and combined energy is weak to moderate (103 to 191). The wind is offshore from the NE or ENE, which keeps the surface clean, but the waves just don’t have any grunt. It’s surfable if you’re desperate, but honestly, it’s very ordinary.
Then we hit Monday the 7th of September – and that’s when things switch. A groundswell from the SW rolls in, jumping to 5 to 6 ft with a long period of 12 to 13 seconds. Combined energy rockets up to 706 and then 1048 – that’s proper moderate to strong energy. Wind is light offshore from the NE, so the face will be clean. This is excellent for experienced surfers – the long period means the waves will have real shape and push, but at a point break reef like Ranches, it’ll line up nicely. The swell direction is SW, and the optimum swell direction for this break is NW, so it’s a bit angled but still good.
Tuesday the 8th of September is the big one, but it’s not for everyone. Swell height hits 12 ft from the SW, with a period of 13 to 14 seconds – that’s a powerful groundswell. Combined energy is massive: 5413 (morning) and 3672 (afternoon). That’s very strong energy. Wind is cross-off from the SE at 22 mph, which will keep the surface clean but is strong. This is expert-only territory – over 8 ft and punchy. The long period will make the reef at Ranches really jack up, with long lulls between sets. Best suited for strong, experienced surfers.
After Tuesday the 8th, it drops off again. Wednesday the 9th has a brief glassy morning with 3 ft from the WSW and 9-second period (181 energy), but it’s weak. From Thursday the 10th right through to the end of the forecast on Thursday the 17th, it’s mostly small, weak, and messy – heights below 3 ft, periods all over the place, and onshore or cross-onshore winds killing any quality. Don’t bother.
So the call: Monday the 7th is the best all-rounder – clean, solid, and fun for competent surfers. Tuesday the 8th is the heavy-hitter, but only if you’ve got the skills and the courage. The rest is a write-off.
Stay keen.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 25°C on Wed night). Winds increasing (light winds from the ENE on Wed morning, fresh winds from the NE by Fri afternoon). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sun night. Warm (max 29°C on Sun afternoon, min 25°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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) | NE 8 | NE 8 | S 15 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NNE 6 | SW 12 | SW 13 | SW 14 | SW 14 | SW 13 | WSW 11 |
Wave Graph | |||||||||||||||||||||
160 | 164 | 0 | 167 | 135 | 111 | 124 | 155 | 113 | 109 | 103 | 58 | 38 | 54 | 31 | 706 | 1011 | 2247 | 5413 | 3502 | 533 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:41AM0.56m | 7:14PM0.25m | 9:59AM0.59m | 8:17PM0.19m | 11:18AM0.62m | 10:55PM0.16m | 12:25PM0.66m | 00:38AM0.18m | 1:20PM0.69m | 1:41AM0.23m | 2:07PM0.70m | 2:29AM0.29m | 2:48PM0.69m | 3:11AM0.36m | |||||||
Low Tide | 3:56PM0.25m | 1:43AM0.06m | 6:40PM0.22m | 2:42AM0.08m | 7:48PM0.17m | 4:04AM0.09m | 8:21PM0.13m | 5:29AM0.08m | 8:49PM0.10m | 6:43AM0.07m | 9:15PM0.08m | 7:44AM0.06m | 9:40PM0.06m | ||||||||
6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | |
— | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 3 | — | — | — | — | — |
Temp °C | 28 | 29 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 27 | 28 | 26 | 28 | 29 | 27 | 25 | 28 | 27 | 28 | 29 | 27 |
Feels °C | 30 | 29 | 26 | 26 | 25 | 25 | 25 | 23 | 24 | 27 | 27 | 26 | 29 | 30 | 28 | 29 | 30 | 29 | 26 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | S 15 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | S 11 | S 12 | S 12 | S 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SW 12 | SW 13 | SW 14 | SW 14 | SW 13 | SSW 10 |
427 | 406 | 279 | 215 | 230 | 333 | 432 | 302 | 575 | 628 | 604 | 755 | 593 | 658 | 628 | 706 | 1011 | 2247 | 5413 | 3502 | 907 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | S 12 | S 11 | S 14 | S 14 | S 14 | ESE 8 | E 14 | E 14 | SSW 17 | SSW 18 | NE 6 | SSW 16 | SSW 19 | NNE 6 | SSW 17 | SSW 17 | NE 12 | SSW 15 | SSW 14 | WSW 11 |
33 | 66 | 37 | 268 | 198 | 93 | 19 | 35 | 59 | 117 | 121 | 58 | 314 | 203 | 31 | 603 | 589 | 336 | 494 | 425 | 533 | |
Swell 3 Height (m) Direction Period (s) | SW 14 | SW 13 | SE 13 | S 10 | S 10 | E 14 | E 14 | SSW 13 | NNE 11 | E 13 | E 13 | E 13 | NE 6 | E 12 | SSW 18 | E 13 | ENE 13 | SSW 15 | ENE 11 | NE 10 | SSW 14 |
30 | 27 | 26 | 18 | 8 | 16 | 33 | 17 | 12 | 56 | 55 | 85 | 38 | 78 | 348 | 171 | 178 | 487 | 219 | 170 | 331 | |
Wind waves Height (m) Direction Period (s) | NE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | — | — | NE 6 | — | — | NNE 6 | — | SE 10 | SSE 10 | — |
160 | 164 | 126 | 167 | 135 | 111 | 124 | 155 | 113 | 109 | 103 | — | — | 54 | — | — | 37 | — | 23 | 9 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 136 | 154 | 154 | 0 | 0 | 154 | 0 | 0 | 8 | 0 | 2 | 0 | 2 | 0 | 0 | 0 | 124 | 171 | 0 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Ranches Surf forecast
The above surf forecast table for Ranches provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ranches can be found by selecting the local surf guide option on the grey menu. Our Ranches 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 (Ranches) 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 Ranches 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.
Ranches is 22 km (14 miles) from Wahiawa. If you plan a vacation in Oahu, look for hotels and other accommodation in Wahiawa. Wahiawa has rooms for a wide range of budgets as well as car hire and transport links.










