Surf Forecasts:
Ranches surf forecast from 19 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 5AM (local time) - 2ft (0.6m), 7s period, NE swell with offshore winds.
- Most powerful swell: Thursday 20 Aug, 11AM (local time) - 2ft (0.6m), 18s period, SW swell with 249 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 5AM (local time) - 2ft (0.6m), 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 Wednesday (Aug 19) at 5AM. The primary swell is predicted to be 0.6m 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 0.6m 18s and forecast to arrive on Thursday (Aug 20) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Monday (Aug 24) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 19th Aug) | 2ft (0.6m) 7s |
| Best Surf | 5AM (Wed 19th Aug) | 2ft (0.6m) 7s |
| Most Powerful | 11AM (Thu 20th Aug) | 2ft (0.6m) 18s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
G’day, I’m Rusty, and here’s how things are shaping up for Ranches over the next couple of weeks.
To be honest, the next ten days or so are pretty flat and ordinary. We’ve got a long stretch of tiny, weak swells and mostly poor conditions. The first real standout doesn’t show up until Wednesday, 2nd September, and even that’s a bit of a long-range tease. The week leading up to that is full of small waves, often under 3 ft, with most days barely offering anything rideable. There’s a gap from roughly 25th August through to 26th August where the wave energy flatlines completely, and then it’s more of the same small stuff.
The pick of the period is Wednesday, 2nd September afternoon. Ranches is a reef break that’s exposed to NW swell, and we’ve got a 4 ft swell coming from NE with a 13-second period. That’s a solid, long-period groundswell that should wrap in nicely here. The combined energy is strong at 532, so there’s proper power behind it. Offshore winds from ENE at 30 km/h will keep the face clean, but that’s a fresh breeze, so it’ll be a bit bumpy. This is advanced territory—swell over 5 ft and the reef setup means it’s not for beginners. The water temp is about normal for the time of year, no major anomaly.
The next morning, Thursday, 3rd September, still has a bit of life with 4 ft from NE, 10-second period, and moderate energy at 331, but the winds are still fresh and offshore. It’s not as good as the day before, but worth a paddle if you’re keen.
For the rest of the window, nothing else really stands out. The swell direction from SW or WNW is okay, but wave heights are tiny—often 2 ft or 2 ft—and the energy is low (under 100 most days). Winds are mostly offshore or cross-off, but the waves just aren’t there. It’s a real waiting game, so if you’re after something decent, keep your eyes on that 2nd September window.
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Thu afternoon, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 29°C on Sat afternoon, min 25°C on Sat night). Winds increasing (calm on Fri night, fresh winds from the NE by Sun night). | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 5 | SW 16 | NNE 6 | NNE 6 | SW 18 | NNE 7 | NNE 7 | W 11 | W 11 | W 10 | W 10 | WNW 11 | WNW 12 | WNW 11 | WNW 12 | WNW 11 | NW 11 | NW 11 | NW 10 |
Wave Graph | |||||||||||||||||||
18 | 129 | 26 | 25 | 249 | 30 | 33 | 56 | 82 | 52 | 73 | 97 | 123 | 79 | 91 | 79 | 57 | 57 | 39 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | glassy | glassy | off | cross | cross-off | glassy | on | on | off | off | off | off | off | off | off | off | off | off |
High Tide | 10:33AM0.50m | 11:45AM0.53m | 10:31PM0.18m | 12:45PM0.56m | 00:28AM0.18m | 1:32PM0.60m | 1:26AM0.20m | 2:12PM0.62m | 2:06AM0.23m | 2:46PM0.64m | 2:41AM0.26m | ||||||||
Low Tide | 2:19AM0.10m | 3:05AM0.12m | 8:45PM0.20m | 8:59PM0.17m | 5:24AM0.12m | 9:18PM0.16m | 6:26AM0.10m | 9:36PM0.14m | 7:17AM0.08m | 9:53PM0.13m | |||||||||
— | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
7:00 | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 5 |
Temp °C | 25 | 26 | 27 | 26 | 27 | 28 | 27 | 26 | 26 | 26 | 28 | 29 | 26 | 28 | 28 | 26 | 27 | 27 | 26 |
Feels °C | 24 | 29 | 30 | 27 | 30 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 27 | 28 | 27 | 25 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 13 | NNE 7 | NNE 6 | NNE 6 | SW 18 | SSW 17 | SW 16 | SW 17 | SW 16 | SSW 16 | SSW 16 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 |
155 | 29 | 26 | 25 | 249 | 200 | 278 | 291 | 261 | 322 | 326 | 251 | 212 | 201 | 191 | 186 | 166 | 156 | 125 | |
Swell 2 Height (m) Direction Period (s) | NE 5 | S 12 | S 12 | SSW 16 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | W 10 | WNW 11 | WNW 12 | WNW 11 | WNW 12 | WNW 11 | NW 11 | NW 11 | NW 10 |
18 | 103 | 69 | 175 | 26 | 30 | 33 | 32 | 31 | 37 | 73 | 97 | 123 | 79 | 91 | 79 | 57 | 57 | 39 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 16 | SSW 16 | S 12 | S 11 | S 11 | S 11 | W 11 | W 11 | W 10 | ENE 7 | SSE 12 | ESE 8 | S 13 | ESE 7 | SSE 13 | SSE 14 | SSW 18 | SSW 17 |
79 | 129 | 100 | 71 | 39 | 39 | 22 | 56 | 82 | 52 | 26 | 50 | 41 | 90 | 21 | 57 | 65 | 61 | 94 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | — | — | — | — | — | — | — | — | — | — | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | ENE 6 | ENE 6 | ENE 5 |
118 | — | — | — | — | — | — | — | — | — | — | 40 | 51 | 62 | 62 | 84 | 99 | 96 | 72 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 2 | 0 | 2 | 2 | 2 | 8 | 2 | 8 | 5 | 0 | 0 | 0 | 0 | 0 | 154 | 153 | 154 | 0 | 8 |
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.











