
Surf Forecasts:
Ranches surf forecast from 11 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 11PM (local time) - 3ft (0.9m), 19s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 15 Sep, 11PM (local time) - 3ft (0.9m), 19s period, SW swell with 546 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 8PM (local time) - 2.5ft (0.8m), 7s 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 Thursday (Sep 10) at 8PM. The primary swell is predicted to be 0.8m and 7s 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 0.9m 19s and forecast to arrive on Tuesday (Sep 15) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 7s period and expected on Friday (Sep 11) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 10th Sep) | 2.5ft (0.8m) 7s |
| Best Surf | 11PM (Tue 15th Sep) | 3ft (0.9m) 19s |
| Most Powerful | 11PM (Tue 15th Sep) | 3ft (0.9m) 19s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
Alright, Rusty here again, breakin’ it down in feet and knots.
So, the only spot worth talkin’ about for the whole 16 days is Ranches. It’s a reef break for the advanced crew, fairly consistent, which is a good sign. Water temp’s about 80°, right on the money for this time of year.
We kick off on Thursday the 10th afternoon. A tiny 2ft NW swell, 9-second period. Wind’s offshore from the ENE at 12 mph, so it’s clean, but the energy is weak at 40. Not much to get excited about.
Friday the 11th is a gem for a small-wave log. Both morning and afternoon are glassy calm, with a 2ft NE swell, 8-second period. Energy’s still weak, 93 in the morning, 57 in the afternoon. Perfect for a cruisy session.
Now, Saturday the 12th – the first real standout. Morning is a bust with cross-onshore wind. But the afternoon? Glassy calm, and a 2ft SW groundswell rolls in with a very long 16-second period. The combined energy is a solid moderate 292. For a reef, that long period will mean some nice, clean lines with plenty of push. This is the best early call.
Sunday the 13th morning is blown out. The afternoon cleans up, glassy, with a 3ft NE swell, 9-second period, energy at 112. Surfable, but ordinary.
Monday the 14th afternoon brings another good one. Clean light offshore breeze, and a 2ft SW groundswell with a 22-second period. Energy hits 332. That’s a proper reef swell.
Tuesday the 15th through Wednesday the 16th are small but clean, with offshore winds. The swell stays around 2ft to 4ft from the NE, short period, so it’s bumpy but rideable.
The long-range highlight is Thursday the 17th morning. A 3ft SW groundswell with a 16-second period and a strong energy reading of 485. Wind is a clean moderate offshore. This is the biggest pulse of the whole run. For a reef, this could be the session of the forecast. It’s a week out, so keep an eye on it.
After that, it dies. From Friday the 18th into the weekend, the energy drops to next to nothing, with days of flat or near-flat conditions. There’s a solid gap of a few days with zero to offer. A weak little bump shows up on Monday the 22nd but the wind is junk.
The last few days, around Wednesday the 24th and Thursday the 25th, show some small SW groundswell, 2ft to 2ft, with periods of 12-14 seconds, but the wind is mostly onshore or cross-onshore. The 25th afternoon goes glassy, but the swell is too weak to matter.
So the takeaway: Saturday afternoon the 12th and Thursday morning the 17th are your two best shots. Clean, proper groundswell for the reef. The rest is mostly small, weak, or flat. Don’t sleep on those two windows.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Thu afternoon, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Wed morning, min 24°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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) | NW 9 | NE 7 | NE 8 | NE 8 | NE 7 | NNE 8 | SW 16 | NE 9 | SW 15 | NE 9 | NE 9 | NE 8 | SW 22 | SW 21 | NNE 8 | NE 8 | SW 19 | NE 7 | NE 7 | NE 7 |
Wave Graph | ||||||||||||||||||||
40 | 57 | 64 | 57 | 44 | 46 | 124 | 79 | 107 | 112 | 107 | 72 | 227 | 224 | 51 | 57 | 535 | 91 | 115 | 91 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | glassy | glassy | off | cross-on | glassy | off | on | glassy | off | cross-off | cross-off | off | on | off | off | off | off | off |
High Tide | 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 | 7:22AM0.55m | 6:27PM0.27m | 8:19AM0.54m | 6:52PM0.22m | |||||||
Low Tide | 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 | 2:21PM0.23m | 00:25AM0.11m | 4:24PM0.24m | 00:56AM0.13m | |||||||
— | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | |
6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 26 | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 27 | 28 | 27 | 29 | 30 | 26 |
Feels °C | 32 | 26 | 30 | 29 | 27 | 27 | 29 | 27 | 27 | 27 | 26 | 29 | 28 | 27 | 29 | 30 | 28 | 31 | 31 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | NE 7 | SW 16 | SW 15 | SSW 15 | SW 16 | NE 9 | NE 9 | NE 9 | SSW 15 | SSW 14 | SSW 14 | SW 22 | NNE 8 | SSW 20 | SW 19 | SW 19 | SSW 18 | SSW 18 | SSW 17 |
172 | 57 | 258 | 229 | 283 | 245 | 81 | 79 | 79 | 84 | 134 | 76 | 227 | 80 | 490 | 384 | 535 | 541 | 541 | 510 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SW 16 | NE 8 | NE 8 | NE 7 | NNE 8 | SW 16 | SSW 13 | SW 15 | SW 12 | SW 24 | SSW 24 | SW 14 | SW 21 | NNE 8 | NE 8 | NE 7 | SW 12 | SW 11 | SW 11 |
211 | 268 | 64 | 57 | 44 | 46 | 124 | 116 | 107 | 37 | 87 | 54 | 48 | 224 | 51 | 57 | 54 | 34 | 31 | 19 | |
Swell 3 Height (m) Direction Period (s) | NW 9 | S 12 | SW 9 | SSW 12 | SE 8 | SSE 8 | SW 13 | SSW 16 | SW 12 | SSE 9 | SSE 8 | SSW 11 | SSW 11 | SSW 13 | SW 13 | SW 12 | SW 12 | S 6 | W 10 | NNE 8 |
40 | 73 | 29 | 46 | 17 | 12 | 87 | 98 | 37 | 8 | 7 | 12 | 23 | 68 | 41 | 38 | 37 | 3 | 7 | 13 | |
Wind waves Height (m) Direction Period (s) | NE 7 | E 7 | ENE 7 | ENE 11 | ENE 10 | — | — | E 4 | E 9 | NE 9 | NE 9 | NE 8 | NNE 8 | — | — | — | ENE 7 | NE 7 | NE 7 | NE 7 |
54 | 100 | 60 | 249 | 158 | — | — | 5 | 59 | 112 | 107 | 72 | 105 | — | — | — | 69 | 91 | 115 | 91 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 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.










