
Surf Forecasts:
Ranches surf forecast from 15 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★+): Monday 14 Sep, 11PM (local time) - 1.5ft (0.5m), 21s period with SW 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 Monday (Sep 14) at 11PM. The primary swell is predicted to be 0.5m and 21s period with a secondary swell of 0.6m and 8s. 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 1.4m 8s period and expected on Saturday (Sep 19) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 14th Sep) | 1.5ft (0.5m) 21s |
| 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, let’s take a look at what’s shaping up.
Honestly, the next couple of weeks are a bit of a mixed bag at Ranches. We’ve got a decent window of opportunity early on, then a long quiet stretch, but there’s a flash of something promising right at the tail end of the forecast.
We start off with a glimmer on Monday the 14th. It’s small, only 2ft from the SW with a very long 22-second period. That’s groundswell, but it’s tiny. The water’s warm at 81°F, which is pretty much spot on for this time of year. The wind is a light offshore from the ENE, keeping it super clean. It’s not a standout, but it’s a nice soft start if you’ve got a log.
Then things go quiet. Tuesday the 15th turns ugly with onshore wind and a messy, weak swell from the NNE at a short 8 seconds. There’s basically nothing worth paddling out for. We’ve got a long gap here. Wednesday through to the following Monday all serve up tiny, weak, or non-existent surf with that persistent ENE offshore wind but next to no energy. The combined swell energy barely gets into double digits most days, often sitting below 100 (weak energy). You’ll see a few 0.7ft to 3ft bumps, but they’re short-period and just don’t have any push. It’s a real flat spell, so don’t bother checking the buoys.
Now, things start to stir late in the second week. On Wednesday the 23rd, we get a pulse of swell from the SW with a long 17-second period. The combined energy jumps to 202 (moderate). The swell height is only 2ft, but with that long period and clean offshores from the ENE, it’s surfable if you’re patient. It’s a tease more than a full-blown session.
The real standout of the whole period hits on Sunday the 27th. The morning shows 4ft from the NNE with a 9-second period, combined energy at 269 (moderate). Wind is light offshore from the E. By the afternoon, it cleans up even more with a light cross-offshore breeze, and the swell pushes to 4ft from the NNE with energy jumping to 368 (solid moderate). This is the best run of the 16 days – clean conditions, decent size, and enough energy to make the reef at Ranches work. It’s not huge, but it’s the pick.
Monday the 28th starts a bit cloudy with onshore wind, but the afternoon delivers a glassy 5ft from the NE with energy at 353. That glassy wind is a massive plus. For an advanced break like Ranches, this is the second-best window. Be warned, it’s an exposed reef and the swell is getting up around 5ft by Tuesday the 29th, which starts to push into expert territory if you’re not on your game. That Tuesday morning is 5ft from the NE with a short 8-second period and cross-on wind, so expect it to get a bit lumpy by the afternoon.
So, to wrap it up: the first week is mostly a bust. The second week has a couple of days that are worth a look. Sunday the 27th through Monday the 28th are your best bets – moderate energy, clean winds, and that reef will be working nicely. Don’t get your hopes up for the rest.
- Rusty
Short Range ForecastSome drizzle, heaviest during Mon afternoon. Warm (max 29°C on Wed morning, min 25°C on Mon night). Winds increasing (calm on Tue morning, fresh winds from the NE by Wed afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 30°C on Fri afternoon, min 26°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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) | SW 22 | SW 21 | NNE 8 | NNE 8 | SW 19 | NE 7 | NE 8 | NE 6 | NE 7 | NE 7 | NE 7 | NE 6 | WSW 9 | NNE 6 | NNE 6 | NE 7 | SSW 15 | SSW 16 | SW 15 | NE 6 |
Wave Graph | ||||||||||||||||||||
227 | 224 | 56 | 52 | 535 | 54 | 82 | 75 | 171 | 194 | 102 | 61 | 8 | 22 | 28 | 67 | 0 | 0 | 104 | 80 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-on | on | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off |
High Tide | 6:00PM0.33m | 7:22AM0.55m | 6:27PM0.27m | 8:19AM0.54m | 6:52PM0.22m | 9:30AM0.53m | 7:45PM0.18m | 10:47AM0.54m | 11:21PM0.18m | 11:54AM0.55m | 00:39AM0.20m | 12:46PM0.58m | 1:19AM0.24m | |||||||
Low Tide | 00:00AM0.08m | 2:21PM0.23m | 00:25AM0.11m | 4:24PM0.24m | 00:56AM0.13m | 7:32PM0.21m | 1:44AM0.16m | 7:41PM0.18m | 3:14AM0.18m | 8:01PM0.16m | 8:19PM0.15m | |||||||||
— | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | |
6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 26 | 27 | 27 | 27 | 29 | 29 | 26 | 27 | 29 | 27 | 29 | 30 | 27 | 28 | 29 | 26 | 28 | 29 | 26 |
Feels °C | 29 | 27 | 30 | 29 | 31 | 29 | 27 | 27 | 29 | 30 | 28 | 30 | 30 | 28 | 29 | 29 | 27 | 29 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | NE 8 | NNE 8 | SSW 20 | SW 19 | SW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 14 |
69 | 44 | 490 | 384 | 535 | 541 | 541 | 510 | 322 | 322 | 759 | 615 | 573 | 539 | 372 | 430 | 287 | 329 | 375 | 371 | |
Swell 2 Height (m) Direction Period (s) | SW 22 | SW 21 | NNE 8 | NNE 8 | NE 8 | SW 12 | SW 11 | SW 11 | SSW 20 | SSW 19 | ENE 9 | E 8 | SSE 8 | NNE 6 | NNE 6 | S 18 | S 16 | SSW 15 | SW 15 | SW 15 |
227 | 224 | 56 | 52 | 57 | 34 | 31 | 31 | 216 | 210 | 17 | 31 | 26 | 22 | 28 | 162 | 257 | 142 | 104 | 33 | |
Swell 3 Height (m) Direction Period (s) | SW 14 | SSW 13 | SW 13 | SW 12 | SW 12 | NNE 9 | SSE 8 | E 10 | SW 11 | E 10 | SSW 10 | SSE 10 | WSW 9 | SSE 6 | E 8 | SSE 6 | SE 6 | SSE 8 | N 11 | W 12 |
48 | 68 | 41 | 38 | 37 | 8 | 7 | 8 | 18 | 18 | 10 | 9 | 8 | 14 | 32 | 15 | 9 | 13 | 9 | 12 | |
Wind waves Height (m) Direction Period (s) | E 4 | — | — | — | ENE 5 | NE 7 | NE 8 | NE 6 | NE 7 | NE 7 | NE 7 | NE 6 | ENE 7 | E 7 | E 8 | NE 7 | ENE 7 | ENE 7 | ENE 7 | NE 6 |
10 | — | — | — | 28 | 54 | 82 | 75 | 171 | 194 | 102 | 61 | 86 | 36 | 260 | 67 | 78 | 78 | 85 | 80 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 6 | 6 | 0 | 0 | 136 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 0 | 2 | 2 | 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.










