Surf Forecasts:
Ranches surf forecast from 8 Sep 2026:
- Best quality surf: Saturday 12 Sep, 8PM (local time) - 1.5ft (0.5m), 16s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 15 Sep, 5AM (local time) - 2ft (0.6m), 21s period, SW swell with 361 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 8AM (local time) - 3.5ft (1.1m), 9s period with NW 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 09) at 8AM. The primary swell is predicted to be 1.1m and 9s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Ranches in the next 16 days are 0.6m 21s and forecast to arrive on Tuesday (Sep 15) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 9s period and expected on Tuesday (Sep 08) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 9th Sep) | 3.5ft (1.1m) 9s |
| Best Surf | 8PM (Sat 12th Sep) | 1.5ft (0.5m) 16s |
| Most Powerful | 5AM (Tue 15th Sep) | 2ft (0.6m) 21s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
G'day, Rusty here. Let's have a look at what's on the table for the next couple of weeks. We've only got one spot in the mix, and it's a bit of a story, so let's get into it.
Alright, look, the short-term is a bit of a write-off, I gotta be honest. We're starting with a few days of nothing really worth getting wet for. The first chance at anything rideable comes around Thursday morning, the 10th, but it's small at 3ft from the NE with a short 8-second period. The wind is offshore, so it's clean, but the energy is weak (146). It's surfable, but just ordinary. That theme sticks around for a while. Friday the 11th offers a tiny 2ft from the NNE with glassy conditions in the morning, but again, it's small and weak (85). The whole week is a grind of small, weak swells.
The real bright spot, the one that's got me talking, is Monday the 14th in the afternoon. Swell direction swings to the SW with a very long period of 22 seconds, pushing in at 2ft. That's a long-period groundswell. The energy is moderate (282), and with a light offshore breeze from the ENE, it should be clean. This is a point break and reef setup, so that long period will wrap in nicely. It's not big, but the quality is there. This is the standout of the whole period.
After that, we're back to tiny, weak signals. The rest of the fortnight is mostly small NE swells with offshore winds, keeping things clean but very small. The water is sitting at 80°, which is about average for the time of year, so no surprises there.
Ranches – Look, I'll level with you. This is a reef break that likes a NW swell, and we do get a touch of that. The best window is that Monday afternoon, the 14th. That 2ft SW groundswell with a 22-second period, glassing off with a light offshore breeze, is the only time the stars align. It's a clean, quality wave for an advanced surfer, but it's not a big day. Just a real nice, clean one. It can get crowded sometimes, so keep that in mind.
So, the call is simple. The next week and a half is mostly a bust. The only real highlight is that Monday the 14th afternoon session. Everything else is small and ordinary. Keep the board waxed for that one window.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue morning. Warm (max 29°C on Thu afternoon, min 24°C on Thu night). Winds decreasing (fresh winds from the SSW on Tue morning, calm by Thu afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 24°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | W 9 | W 8 | NW 9 | NW 9 | NW 8 | NW 8 | NE 8 | NE 7 | NE 7 | NNE 8 | NE 7 | NE 7 | NNE 8 | SW 16 | NE 9 | SW 15 | NE 8 | NNE 8 | NE 8 | SW 22 | SW 21 |
Wave Graph  | |||||||||||||||||||||
 kJ | 422 | 168 | 132 | 145 | 118 | 84 | 82 | 75 | 55 | 44 | 65 | 43 | 40 | 124 | 75 | 106 | 58 | 47 | 57 | 227 | 224 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | on | cross-on | off | off | off | off | glassy | on | glassy | on | cross | off | on | glassy | off | cross-off | off | off |
High Tide | 2:48PM0.69m | 3:11AM0.36m | 3:25PM0.66m | 3:52AM0.42m | 3:59PM0.61m | 4:31AM0.47m | 4:32PM0.54m | 5:11AM0.51m | 5:02PM0.47m | 5:51AM0.54m | 5:31PM0.40m | 6:34AM0.55m | 6:00PM0.33m | ||||||||
Low Tide | 9:40PM0.06m | 8:39AM0.06m | 10:04PM0.05m | 9:30AM0.07m | 10:28PM0.04m | 10:20AM0.10m | 10:51PM0.04m | 11:10AM0.13m | 11:14PM0.05m | 12:03PM0.17m | 11:37PM0.06m | 1:03PM0.20m | 00:00AM0.08m | ||||||||
 |  |  | |  |  | | | | | | | | | | | | | | | | |
 | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — |
mm | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 26 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 29 | 27 |
Feels °C | 26 | 27 | 30 | 30 | 32 | 32 | 31 | 33 | 27 | 30 | 29 | 28 | 28 | 27 | 27 | 28 | 26 | 29 | 29 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 8 | SW 8 | NW 9 | NW 8 | NW 8 | NE 8 | NE 7 | SW 16 | SW 16 | SW 15 | SSW 15 | SW 15 | NNE 9 | NE 9 | NE 8 | NE 8 | NNE 8 | NE 8 | NE 8 | NNE 8 |
| kJ | 422 | 168 | 268 | 145 | 118 | 84 | 82 | 75 | 268 | 258 | 229 | 283 | 242 | 49 | 75 | 74 | 58 | 47 | 57 | 55 | 44 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | S 12 | NNE 8 | NE 7 | NE 7 | NNE 8 | SW 16 | SSW 13 | SW 15 | SSW 15 | SSW 14 | SSW 14 | SW 22 | SW 21 |
| kJ | 481 | 456 | 356 | 336 | 257 | 176 | 173 | 172 | 73 | 44 | 65 | 43 | 40 | 124 | 116 | 106 | 84 | 134 | 76 | 227 | 224 |
Swell 3 Height (m) Direction Period (s) | ENE 11 | ENE 11 | NW 9 | SSW 8 | SSW 7 | NE 8 | NW 9 | SSW 18 | SW 10 | SW 9 | SSW 11 | SW 8 | SSE 8 | SW 13 | SSW 16 | SSW 12 | SSW 12 | ENE 5 | SSW 24 | SW 14 | SSW 13 |
| kJ | 100 | 154 | 132 | 58 | 43 | 36 | 64 | 211 | 50 | 41 | 43 | 18 | 12 | 87 | 98 | 57 | 56 | 11 | 54 | 48 | 68 |
Wind waves Height (m) Direction Period (s) | SSW 10 | SSW 8 | — | — | — | — | — | — | NE 7 | — | — | — | — | — | — | — | — | — | — | — | E 5 |
| kJ | 1348 | 550 | — | — | — | — | — | — | 55 | — | — | — | — | — | — | — | — | — | — | — | 19 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 153 | 35 | 9 | 2 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 3 | 0 | 3 | 0 | 0 | 0 | 0 | 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.
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