Surf Forecasts:
Ranches surf forecast from 6 Aug 2026:
- Best quality surf: Sunday 9 Aug, 2PM (local time) - 1.5ft (0.5m), 16s period, SW swell with offshore winds.
- Most powerful swell: Saturday 8 Aug, 8AM (local time) - 1.5ft (0.5m), 19s period, SW swell with 175 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 11PM (local time) - 1.5ft (0.5m), 15s 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 Wednesday (Aug 05) at 11PM. The primary swell is predicted to be 0.5m and 15s 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 0.5m 19s and forecast to arrive on Saturday (Aug 08) at 8AM. 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 7s period and expected on Monday (Aug 10) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 5th Aug) | 1.5ft (0.5m) 15s |
| Best Surf | 2PM (Sun 9th Aug) | 1.5ft (0.5m) 16s |
| Most Powerful | 8AM (Sat 8th Aug) | 1.5ft (0.5m) 19s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s have a look at what’s coming up for Ranches.
Truth be told, it’s a pretty quiet run for a while. There’s a long stretch of small, weak surf with hardly any energy behind it. The first proper swell that’s worth paddling out for doesn’t show until Monday the 17th of August. That’s a solid gap of nearly two weeks with very little to get excited about. The water temp is sitting at 80°, which is pretty much normal for this time of year, so at least the water’s warm while you wait.
The first real standout is Monday the 17th of August, with a NE swell pushing 4 ft, period around 8 seconds, and combined energy of 288 (moderate). The wind is offshore from the NE at 16 mph, keeping things clean. This is a reef break, exposed to the NW, and the swell is coming from the NE – not its absolute optimum direction, but with that offshore wind and solid size, it’s going to offer some decent waves. Because it’s a reef, it’ll handle that period just fine. Crowds are possible here, so don’t expect to have it to yourself. This is definitely the best morning of the whole forecast for a surfer who knows what they’re doing.
Tuesday the 18th of August keeps the momentum going. Another 4 ft to 4 ft NE swell, period still around 8 seconds, and combined energy in the 257 to 272 range (moderate). Offshore winds again from the NE at 12 mph, so conditions stay clean throughout the day. It’s a good follow-up session, but Monday morning just edges it for quality.
After that, Wednesday the 19th and Thursday the 20th of August see the swell drop a little, with 4 ft to 4 ft NE swell and periods dropping to 7 seconds. Still offshore winds, but the energy is easing off – combined energy falls to 187 to 222 (moderate). It’s still surfable, but nothing like the peak on Monday and Tuesday.
Overall, you’re looking at two clear standout days: Monday the 17th and Tuesday the 18th of August. That’s your window. Everything before that is small and weak, with a lot of days showing zero combined energy.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Warm (max 28°C on Wed afternoon, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 28°C on Sat afternoon, min 25°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | ||||||||||||||
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 5 | NE 5 | NE 6 | NE 6 | NE 8 | NE 5 | SW 14 | SSW 19 | SSW 18 | SW 18 | NE 7 | SW 16 | S 18 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | NE 7 | NNE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 10 | 11 | 15 | 19 | 45 | 16 | 91 | 0 | 0 | 154 | 67 | 130 | 0 | 91 | 43 | 36 | 40 | 34 | 28 | 31 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-on | cross-off | off | glassy | off | off | off | off | off | off | off | off | glassy | glassy | off | glassy | cross-off | off |
High Tide | 8:27PM0.26m | 11:44AM0.57m | 9:50PM0.19m | 12:47PM0.64m | 11:52PM0.16m | 1:42PM0.70m | 1:19AM0.16m | 2:30PM0.75m | 2:22AM0.19m | 3:14PM0.77m | 3:15AM0.23m | 3:55PM0.76m | 4:03AM0.28m | |||||||
Low Tide | 5:37PM0.27m | 3:28AM0.03m | 7:57PM0.21m | 4:26AM0.02m | 8:52PM0.16m | 5:32AM0.01m | 9:27PM0.12m | 6:38AM-0.01m | 9:58PM0.08m | 7:38AM-0.02m | 10:28PM0.06m | 8:33AM-0.02m | 10:58PM0.05m | |||||||
 |  | |  | | | | | |  | | | | | |  | | | | | |
 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 7:09 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — |
Temp °C | 28 | 26 | 27 | 27 | 25 | 27 | 28 | 26 | 27 | 28 | 25 | 26 | 27 | 26 | 28 | 28 | 26 | 27 | 28 | 26 |
Feels °C | 30 | 26 | 30 | 29 | 25 | 29 | 29 | 27 | 28 | 28 | 25 | 27 | 28 | 27 | 32 | 29 | 27 | 30 | 31 | 27 |
Swell 1 Height (m) Direction Period (s) | NE 5 | NE 5 | NE 6 | NE 6 | SSW 14 | NE 5 | NE 5 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | NE 7 | NE 7 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 |
| kJ | 10 | 11 | 15 | 19 | 138 | 16 | 15 | 107 | 175 | 102 | 137 | 96 | 85 | 91 | 43 | 234 | 237 | 218 | 269 | 239 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 14 | SSW 14 | NNW 7 | SSW 14 | SW 14 | SSW 19 | SSW 18 | SW 18 | SSW 17 | SW 16 | S 18 | SSW 16 | SSW 15 | SSE 9 | NE 6 | NE 6 | NE 7 | S 20 |
| kJ | 88 | 86 | 81 | 80 | 18 | 77 | 91 | 148 | 221 | 154 | 202 | 130 | 156 | 288 | 186 | 32 | 40 | 34 | 28 | 485 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | SSE 12 | SSE 11 | NNW 8 | S 11 | SSE 11 | SW 20 | SSE 11 | SE 8 | SSE 10 | SSE 10 | SSW 18 | SSW 16 | SSW 12 | SSW 12 | SSW 11 | SE 7 | SSE 9 | SSE 9 | NNE 7 |
| kJ | 46 | 49 | 25 | 19 | 21 | 23 | 99 | 39 | 10 | 31 | 19 | 102 | 102 | 56 | 81 | 42 | 14 | 31 | 30 | 31 |
Wind waves Height (m) Direction Period (s) | — | ENE 9 | — | — | NE 8 | — | E 6 | ENE 6 | NE 7 | NE 6 | NE 7 | NE 7 | ENE 7 | ENE 7 | — | NE 7 | — | — | E 7 | — |
| kJ | — | 88 | — | — | 45 | — | 23 | 34 | 44 | 52 | 67 | 65 | 90 | 220 | — | 36 | — | — | 86 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2 | 2 | 3 | 2 | 0 | 2 | 0 | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 2 | 2 | 2 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ranches surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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