Surf Forecasts:
Ranches surf forecast from 30 Aug 2026:
- Best quality surf: Monday 31 Aug, 2PM (local time) - 4.5ft (1.3m), 8s period, NE swell with offshore winds.
- Most powerful swell: Friday 4 Sep, 11PM (local time) - 6ft (1.9m), 7s period, NE swell with 396 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 8AM (local time) - 3.5ft (1.1m), 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 Sunday (Aug 30) at 8AM. The primary swell is predicted to be 1.1m 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 1.9m 7s and forecast to arrive on Friday (Sep 04) 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 1.8m 8s period and expected on Saturday (Sep 05) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 30th Aug) | 3.5ft (1.1m) 7s |
| Best Surf | 2PM (Mon 31st Aug) | 4.5ft (1.3m) 8s |
| Most Powerful | 11PM (Fri 4th Sep) | 6ft (1.9m) 7s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
Alright, this is Rusty checking in from the Ranches. We've got a bit of a flat spell to start, but there's light at the end of the tunnel if you're patient.
The first week is pretty ordinary. The water is sitting at 81°, which is about average for this time of year, so no surprises there. The swell energy is weak, coming in at just 112 (combined energy of all swells directed here) on Sunday, August 30, with a short, weak 4ft NE swell on a 7-second period. It's surfable, but only just. The wind is offshore from the ENE, so the conditions will be clean, but the waves are small and lack any punch. This theme continues right through the first week, with the swell staying under 4ft and the period rarely getting over 8 seconds. The energy climbs a bit on Friday, September 4, hitting 327 (combined energy of all swells directed here) with a 6ft NE swell, but the period is a weak 7 seconds, and by that point, the wind is a fresh 35 km/h from the ENE, which is still offshore but getting a bit strong. It's still just ordinary.
The weekend of September 5 and 6 is a bit of a mixed bag, with some cross-offshore winds and smaller swell, and the energy drops back into the double digits. Monday, September 7 sees a jump in swell size to 6ft, but the period is still short, and the wind is a fresh 35 km/h, so it's messy and not really worth paddling out for.
The second week gets a bit weird. September 8 sees a complete drop in energy, with a 1ft swell from the NW and a crazy 45 km/h wind from the north, making it more of a kite-surfing day than a surfing day. By September 9, we get some glassy conditions on September 10, but there's no swell at all. September 11 brings back a tiny 3ft NE swell, but it's glassy in the morning, so it could be a fun little session for a longboard.
The real standout, and the only one I'd mark on the calendar, is Monday, September 14. In the afternoon, the swell energy jumps to 271 (combined energy of all swells directed here) with a 2ft swell from the SW, but the period is a massive 21 seconds. That's a very long period groundswell, and while the height is small, that energy will wrap in nicely. The wind is a moderate 20 km/h from the NE, which is offshore and clean. The swell direction is coming from the SW, which is a bit off the optimum NW direction for this reef, but with that kind of period, it could still set up some nice, lined-up waves. It's a promising long-range call, but the size is small, so temper your expectations.
So, the honest truth: the first week is a bust. The second week has a few small windows, but the only real highlight is that Monday, September 14 afternoon. Hang in there, and keep an eye on that long-period pulse.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Fri night. 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). | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NNE 6 | NE 7 | NE 7 | NE 7 | NE 6 | NE 7 | NE 8 | NNE 7 | NE 8 | NE 8 |
Wave Graph | |||||||||||||||||||||
112 | 121 | 102 | 174 | 156 | 137 | 121 | 140 | 130 | 118 | 121 | 25 | 84 | 118 | 131 | 209 | 327 | 0 | 108 | 177 | 120 | |
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 | off | off | off | off | cross-off | cross-off | off |
High Tide | 5:38PM0.48m | 6:38AM0.50m | 6:08PM0.41m | 7:34AM0.53m | 6:40PM0.33m | 8:41AM0.56m | 7:14PM0.25m | 9:59AM0.59m | 8:17PM0.19m | 11:18AM0.62m | 10:55PM0.16m | 12:25PM0.66m | 00:38AM0.18m | ||||||||
Low Tide | 11:40AM0.14m | 00:00AM0.05m | 12:40PM0.19m | 00:28AM0.05m | 1:58PM0.23m | 1:01AM0.05m | 3:56PM0.25m | 1:43AM0.06m | 6:40PM0.22m | 2:42AM0.08m | 7:48PM0.17m | 4:04AM0.09m | 8:21PM0.13m | ||||||||
6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 1 | — |
Temp °C | 28 | 28 | 26 | 27 | 28 | 26 | 27 | 28 | 26 | 28 | 29 | 26 | 27 | 27 | 25 | 26 | 26 | 26 | 26 | 27 | 27 |
Feels °C | 27 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 28 | 29 | 27 | 27 | 26 | 23 | 24 | 23 | 24 | 26 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | S 12 | NE 7 | SSW 15 | SSW 14 | S 19 | SSW 18 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 | S 13 | S 13 | SE 12 | SSE 10 | SSE 8 | NE 8 |
226 | 100 | 102 | 191 | 183 | 273 | 333 | 314 | 373 | 427 | 406 | 352 | 268 | 192 | 176 | 173 | 121 | 120 | 559 | 221 | 120 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 16 | SSW 15 | S 11 | S 11 | S 10 | SSW 14 | S 12 | SW 14 | SSE 10 | S 12 | ENE 7 | S 10 | SSE 10 | SE 14 | SE 13 | SE 14 | S 13 | NNE 7 | NE 8 | S 6 |
46 | 162 | 199 | 57 | 82 | 51 | 115 | 77 | 50 | 33 | 66 | 48 | 52 | 33 | 33 | 27 | 49 | 87 | 108 | 177 | 64 | |
Swell 3 Height (m) Direction Period (s) | SSE 12 | W 11 | S 11 | S 9 | SSW 19 | SW 13 | S 10 | SW 14 | S 10 | SW 14 | SW 13 | NNE 6 | SW 13 | SSW 13 | E 12 | E 13 | ESE 10 | SSW 20 | ENE 9 | SSW 18 | SSW 16 |
48 | 9 | 87 | 14 | 123 | 88 | 46 | 53 | 33 | 30 | 27 | 25 | 27 | 17 | 11 | 14 | 19 | 37 | 103 | 121 | 149 | |
Wind waves Height (m) Direction Period (s) | NE 7 | NE 7 | ENE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | ENE 7 | NE 7 | NE 7 | NE 7 | NE 6 | NE 7 | NE 8 | — | — | ESE 8 |
112 | 121 | 161 | 174 | 156 | 137 | 121 | 140 | 130 | 118 | 121 | 147 | 84 | 118 | 131 | 209 | 327 | 388 | — | — | 352 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 153 | 0 | 0 | 0 | 2 | 0 | 156 | 154 | 153 | 154 | 154 | 105 | 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.











