Surf Forecasts:
Ranches surf forecast from 23 Aug 2026:
- Best quality surf: Sunday 23 Aug, 5AM (local time) - 2.5ft (0.7m), 12s period, WNW swell with offshore winds.
- Most powerful swell: Sunday 23 Aug, 5AM (local time) - 2.5ft (0.7m), 12s period, WNW swell with 119 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 5AM (local time) - 2.5ft (0.7m), 12s period with WNW 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 23) at 5AM. The primary swell is predicted to be 0.7m and 12s period with a secondary swell of 0.9m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Ranches in the next 16 days are 0.7m 12s and forecast to arrive on Sunday (Aug 23) 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 1.2m 7s period and expected on Sunday (Aug 30) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sun 23rd Aug) | 2.5ft (0.7m) 12s |
| Best Surf | 5AM (Sun 23rd Aug) | 2.5ft (0.7m) 12s |
| Most Powerful | 5AM (Sun 23rd Aug) | 2.5ft (0.7m) 12s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s get into it. We’re looking at a pretty quiet stretch ahead for the only spot on the radar, Ranches, a reef break that needs a solid NW swell to really wake up. The water temp is sitting about average for this time of year, so nothing wild there.
The pattern for the next 16 days is a long, drawn-out lull. We’ve got a few tiny bumps in the first week, but honestly, nothing is holding any real power. The best of a very average bunch comes on the afternoon of the 29th of August, where we see a northeast swell of 4 ft with a short period of 6 seconds. The wind is a clean offshore from the ENE at 16 mph, so the surface will be glassy. The combined energy of all swells is moderate (87), but the short period means the waves are going to be weak and crumbly. It’s surfable, but you’re not going to be writing home about it.
For a stretch of days from the 25th right through to the 28th, it’s basically flat – poor surf with zero energy. That’s a solid four-day gap of nothing.
Then we get into the second week. There’s a bit more energy showing up around the 1st of September, with a 4 ft swell from the northeast, but the wind is cross-offshore and the conditions are still rated poor. The energy is moderate (188), but the quality isn’t there. It’s a promising sign that the ocean is waking up, but it’s not a goer.
The only other little glimmer is on the 2nd of September afternoon, when the wind goes glassy and we get a 3 ft northeast swell. The period is 8 seconds, so still short period, but it’s clean. The energy is moderate (152). It’s about as good as it gets in this window, but it’s still very ordinary.
Bottom line: There’s no standout window here. If you’re desperate, the 29th of August afternoon is the cleanest, and the 2nd of September afternoon is the glassiest. But for a reef break that needs a proper NW groundswell to really fire, this is a long wait. Keep an eye on the forecasts, because a blank run like this is normal for the area when the swell direction is wrong. It won’t stay poor forever.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Mon afternoon, min 26°C on Sat night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Thu afternoon, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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) | WNW 12 | WNW 11 | WNW 10 | NW 11 | NW 11 | NE 6 | SSW 13 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | NW 10 | NW 10 | NW 9 | N 7 | NNE 7 | NE 6 |
Wave Graph | |||||||||||||||||||
125 | 68 | 40 | 63 | 55 | 54 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 23 | 23 | 25 | 15 | 83 | |
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 | cross-off | off | off | off | off | off |
High Tide | 1:26AM0.20m | 2:12PM0.62m | 2:06AM0.23m | 2:46PM0.64m | 2:41AM0.26m | 3:16PM0.65m | 3:15AM0.30m | 3:44PM0.65m | 3:51AM0.34m | 4:13PM0.63m | 4:28AM0.38m | 4:40PM0.59m | |||||||
Low Tide | 9:18PM0.16m | 6:26AM0.10m | 9:36PM0.14m | 7:17AM0.08m | 9:53PM0.13m | 8:01AM0.06m | 10:11PM0.11m | 8:42AM0.05m | 10:30PM0.10m | 9:23AM0.06m | 10:50PM0.08m | 10:04AM0.07m | 11:12PM0.07m | ||||||
— | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | |
6:58 | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 28 | 26 | 28 | 29 | 27 | 28 | 29 | 26 | 26 | 27 | 26 | 27 | 29 | 25 | 28 | 28 | 25 |
Feels °C | 27 | 27 | 27 | 27 | 30 | 29 | 28 | 29 | 29 | 26 | 25 | 26 | 26 | 27 | 28 | 25 | 28 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 17 | S 16 | S 14 | S 14 | S 14 |
212 | 201 | 191 | 186 | 166 | 156 | 125 | 119 | 196 | 167 | 215 | 395 | 365 | 716 | 540 | 582 | 334 | 399 | 229 | |
Swell 2 Height (m) Direction Period (s) | WNW 12 | WNW 11 | WNW 10 | NW 11 | SSE 12 | SSE 8 | SSE 8 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | S 12 | S 12 | NNE 8 | N 7 | NNE 7 | SSW 10 |
125 | 66 | 40 | 63 | 50 | 26 | 22 | 147 | 81 | 81 | 165 | 135 | 137 | 71 | 71 | 19 | 25 | 15 | 18 | |
Swell 3 Height (m) Direction Period (s) | SSE 12 | S 13 | ESE 8 | SSE 13 | NW 11 | SSE 12 | SSW 17 | SSE 7 | SSE 6 | S 18 | SE 7 | SE 12 | S 17 | NW 10 | NW 10 | NW 9 | SSW 11 | NW 9 | SW 19 |
50 | 90 | 24 | 66 | 55 | 47 | 93 | 18 | 14 | 167 | 12 | 35 | 147 | 24 | 23 | 23 | 37 | 14 | 91 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | NE 6 | NE 6 | NE 6 | ENE 6 | NE 6 | NE 6 | ENE 6 | ENE 7 | ENE 6 | NE 5 | NE 5 | NE 5 | NE 5 | NE 6 | ENE 5 | ENE 6 | ENE 6 | NE 6 |
93 | 68 | 76 | 77 | 63 | 54 | 43 | 63 | 78 | 43 | 28 | 32 | 23 | 22 | 29 | 19 | 27 | 41 | 83 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 2 | 2 | 6 | 2 | 2 | 2 | 2 | 2 | 0 | 2 | 2 | 0 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











