
Surf Forecasts:
Ranches surf forecast from 7 Sep 2026:
- Best quality surf: Saturday 12 Sep, 5PM (local time) - 1.5ft (0.5m), 16s period, SW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 5PM (local time) - 8ft (2.5m), 14s period, SW swell with 2,746 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 8AM (local time) - 3.5ft (1.0m), 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 1.0m 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 2.5m 14s and forecast to arrive on Monday (Sep 07) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.5m 15s period and expected on Monday (Sep 07) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 9th Sep) | 3.5ft (1.0m) 9s |
| Best Surf | 5PM (Sat 12th Sep) | 1.5ft (0.5m) 16s |
| Most Powerful | 5PM (Mon 7th Sep) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin’ at Ranches over the next couple of weeks.
Right off the bat, we’ve got a slow start. Monday the 7th is a write-off with a risk of thunderstorms and a strong cross-off wind, and the swell is nowhere to be found. Tuesday the 8th is a no-go too, with messy cross-on winds and lumpy, poor-quality waves. Basically, the first few days are a bust.
The first real glimmer of hope comes on Wednesday the 9th in the morning. Light onshore winds and a small 4ft swell from the NW with a 10-second period. It’s only just surfable, and the conditions are a bit iffy with rain showers around, but it’s a start. Thursday the 10th is flat in the morning, but by the afternoon a tiny 3ft NE swell shows up with a clean cross-off breeze. It’s not much, but it’s something.
Friday the 11th is the standout of this first week. The morning is glassy with a calm wind and a tiny 2ft NNE swell. It’s small, but with the water temperature sitting at a normal 81° for this time of year, it’s a lovely morning for a longboard or a foamie. The combined energy of all swells directed here is weak (91), so don’t expect any power, but the clean conditions are a treat.
We then hit a flat spell through the weekend. Saturday the 12th afternoon brings a weird little 2ft swell from the SW with a very long 16-second period, and it’s glassy. The combined energy is moderate (288), but the swell is tiny. It’s a tease. Sunday the 13th is similar – tiny, glassy, and ordinary. The whole period from Monday the 7th through to Monday the 14th is a series of small, weak, and inconsistent waves.
Now, let’s talk about the real prize. The action picks up from Sunday the 20th of September. The morning sees a 3ft groundswell from the NNW with a 12-second period, and a clean, gentle offshore breeze from the ENE. The combined energy of all swells directed here is moderate (313). This is your best bet for a proper session. The swell builds through the afternoon and into Monday the 21st, reaching 4ft with the same clean offshore wind, and the energy stays solid (379). This is a point break or reef setup, and that long-period groundswell will wrap in beautifully. The water is still warm, and the conditions are clean. This is the one to circle on the calendar.
After that, Tuesday the 22nd morning is glassy with a 4ft NNW swell, but the wind picks up again in the afternoon. It’s still surfable, but the magic of the 20th and 21st is the clear winner.
So, to sum it up: the first week and a half is a struggle with tiny, weak waves and poor conditions. Hold out for the standouts on the 20th and 21st of September. That’s your window.
Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon night. Warm (max 29°C on Mon afternoon, min 26°C on Mon morning). Winds decreasing (strong winds from the SSE on Mon night, calm by Wed morning). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu morning. Warm (max 28°C on Thu morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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) | SSW 12 | SW 14 | NW 12 | W 10 | W 8 | SW 8 | NW 10 | NW 8 | NW 8 | SSW 16 | NE 7 | NE 7 | SW 10 | NE 8 | NE 7 | NNE 8 | SW 16 | NNE 9 | SW 15 | NE 8 | SW 24 |
Wave Graph | |||||||||||||||||||||
0 | 2746 | 37 | 951 | 235 | 232 | 204 | 120 | 73 | 0 | 75 | 48 | 46 | 48 | 44 | 44 | 124 | 65 | 107 | 55 | 99 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-on | cross-on | cross | on | on | cross-off | cross-off | cross-off | off | glassy | cross-on | glassy | on | glassy | off | glassy | off | off |
High Tide | 2:07PM0.70m | 2:29AM0.29m | 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 | ||||||||
Low Tide | 9:15PM0.08m | 7:44AM0.06m | 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 | ||||||||
6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
— | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | |
mm | 1 | 2 | 7 | 1 | — | 1 | 1 | 3 | 4 | 1 | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 29 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 26 |
Feels °C | 28 | 29 | 24 | 26 | 27 | 30 | 31 | 31 | 31 | 31 | 31 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SW 14 | ENE 8 | W 10 | W 8 | SW 8 | NW 10 | NW 8 | NW 8 | ENE 7 | SSW 12 | NE 7 | SW 16 | SW 15 | SSW 15 | SW 15 | NE 9 | NNE 9 | NE 8 | NE 8 | NE 8 |
674 | 2746 | 120 | 951 | 235 | 232 | 204 | 120 | 73 | 68 | 133 | 48 | 258 | 229 | 283 | 242 | 77 | 65 | 57 | 55 | 57 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 9 | NW 12 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 18 | SW 16 | NNE 8 | NE 8 | NE 7 | NNE 8 | SW 16 | SSW 13 | SW 15 | SSW 15 | SW 14 |
140 | 374 | 37 | 481 | 485 | 356 | 336 | 257 | 176 | 173 | 211 | 268 | 46 | 48 | 44 | 44 | 124 | 116 | 107 | 84 | 99 | |
Swell 3 Height (m) Direction Period (s) | SSW 17 | NE 8 | NW 12 | ENE 11 | ENE 11 | NW 9 | SSW 8 | SSW 7 | NE 8 | SSW 16 | NW 8 | SSW 12 | SW 10 | SW 9 | SW 9 | SW 8 | SW 13 | SSW 16 | SSW 12 | SW 12 | SW 24 |
385 | 119 | 6 | 100 | 151 | 135 | 58 | 43 | 45 | 181 | 21 | 79 | 45 | 29 | 19 | 11 | 87 | 98 | 57 | 37 | 87 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | SE 9 | SSW 13 | SSW 9 | SSW 8 | — | — | — | — | — | NE 7 | ENE 7 | — | — | — | — | — | — | — | — | — |
124 | 1138 | 10839 | 1060 | 516 | — | — | — | — | — | 75 | 82 | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 171 | 171 | 172 | 147 | 35 | 9 | 8 | 2 | 0 | 2 | 0 | 0 | 0 | 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.










