
Surf Forecasts:
Ranches surf forecast from 8 Aug 2026:
- Best quality surf: Friday 7 Aug, 8PM (local time) - 1.5ft (0.5m), 13s period, SW swell with offshore winds.
- Most powerful swell: Saturday 8 Aug, 5AM (local time) - 1.5ft (0.5m), 19s period, SW swell with 183 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 8PM (local time) - 1.5ft (0.5m), 13s 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 Friday (Aug 07) at 8PM. The primary swell is predicted to be 0.5m and 13s 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 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 7s period and expected on Thursday (Aug 13) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 7th Aug) | 1.5ft (0.5m) 13s |
| Best Surf | 8PM (Fri 7th Aug) | 1.5ft (0.5m) 13s |
| Most Powerful | 5AM (Sat 8th Aug) | 1.5ft (0.5m) 19s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. We’ve got a single spot lighting up the forecast for the next couple of weeks, and it’s a proper reef setup that demands respect.
The overall pattern is a bit of a slow burn. We’re starting with a few days of small, ordinary surf before a real push of energy arrives for the second weekend and into the following week. The standout window is clearly the 16th through the 18th, when things get serious.
We kick off on Friday the 7th of August with tiny 2ft waves from the southwest, but the wind is a cross-off from the NNE, so the water’s clean. The water temperature is sitting at a very warm 80°, which is about 0.5° above the long-term average, so it’s basically normal for this time of year—nice and balmy.
Saturday the 8th is a washout with no rideable surf, and Sunday the 9th is back to that 2ft southwest swell, but this time with a clean offshore breeze from the NE. The period is a decent 16 seconds, which is proper groundswell, but the energy is still weak (187 combined energy). It’s surfable but ordinary.
Monday the 10th and Tuesday the 11th are similar—small, weak, and not worth getting excited about. The swell drops to nearly nothing by Wednesday and Thursday the 12th and 13th, with a bit of a long-period WNW groundswell trying to sneak in, but it’s only 0.7ft to 1.0ft. That’s a paddling-only day.
Now, Friday the 14th sees a shift. The swell picks up to 4ft from the northeast, with a short period of 7 seconds. The wind is offshore from the ENE, but the energy is building (132 combined energy). It’s still ordinary though.
The real action starts on Saturday the 15th of August. The swell is 4ft to 4ft from the NE, period is 8 seconds, and the wind is a solid offshore from the ENE. The energy jumps to 221 by the afternoon, but the conditions are still marginal. Not the best, but it’s getting there.
Sunday the 16th of August is where it gets interesting. The morning sees 6ft of NE swell, period 8 seconds, and clean offshore ENE winds at 25 km/h. The combined energy is a strong 459. This is legitimate surf, but at 6ft, it’s pushing into the zone where it’s too much for beginners. The afternoon bumps up to 7ft with 516 energy.
Monday the 17th of August is the standout. The morning brings 7ft of NE swell, period 8 seconds, and a lighter offshore breeze from the ENE at 15 km/h. The energy is a powerful 610. This is very good surf. The afternoon holds steady at 7ft with 625 energy. This is big, powerful, and clean. For a reef break like Ranches, the NE swell direction is spot on for the optimum. At this size, only experienced surfers should be out there. The crowd factor is “sometimes,” so you might share it, but it’s worth it.
Tuesday the 18th is still good with 4ft of NE swell, but the wind turns cross-off from the NNE, and the energy drops to 243. Still fun, but not as clean as Monday.
After that, things get small again. Wednesday the 19th has a brief moment of glassy conditions with 2ft from the NE in the morning, but by the afternoon, the wind swings onshore from the WSW. The rest of the week into the 22nd stays small, weak, and mostly ordinary, though there are a few clean windows with offshore winds.
The Pick: Without a doubt, Monday the 17th of August at Ranches. The 7ft of NE swell, clean offshore wind, and 610 combined energy is the best on offer. It’s big, powerful, and clean. Don’t sleep on the Sunday either, but Monday is the peak.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Fri afternoon, min 25°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 14 | SSW 19 | SSW 18 | SW 18 | NE 6 | SW 16 | SW 16 | NNW 10 | NE 7 | NE 7 | SSW 15 | SSW 15 | NE 6 | S 20 | S 18 | S 18 | NE 6 | WNW 12 | W 12 | NE 7 |
Wave Graph | ||||||||||||||||||||
91 | 0 | 0 | 154 | 58 | 130 | 127 | 33 | 55 | 62 | 0 | 0 | 31 | 0 | 0 | 0 | 53 | 28 | 11 | 73 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | off | off | cross-off | off | off | off | off | off | off | off | off | off | off | off |
High Tide | 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 | 4:33PM0.72m | 4:50AM0.33m | 5:08PM0.66m | ||||||||
Low Tide | 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 | 9:26AM-0.00m | 11:26PM0.04m | 10:16AM0.03m | 11:54PM0.04m | |||||||
— | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 26 | 28 | 29 | 26 | 27 | 28 | 26 | 28 | 29 | 26 | 28 | 29 | 25 | 28 | 29 | 26 | 28 | 28 | 26 |
Feels °C | 31 | 27 | 29 | 29 | 27 | 27 | 28 | 27 | 30 | 31 | 27 | 28 | 30 | 24 | 28 | 29 | 27 | 27 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | NE 7 | SSW 15 | NE 7 | SSW 15 | SSW 14 | SSW 13 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 |
91 | 108 | 175 | 120 | 137 | 96 | 85 | 288 | 55 | 234 | 47 | 167 | 269 | 299 | 515 | 613 | 890 | 868 | 662 | 636 | |
Swell 2 Height (m) Direction Period (s) | SSE 11 | SSW 19 | SSW 18 | SW 18 | SSW 17 | SW 16 | S 18 | SSW 12 | SSW 15 | SSW 12 | SSW 15 | SSW 11 | SSE 9 | S 20 | SSW 13 | SSW 13 | SE 7 | SE 7 | W 12 | ESE 8 |
38 | 148 | 221 | 154 | 202 | 130 | 156 | 56 | 186 | 53 | 240 | 41 | 32 | 373 | 277 | 273 | 14 | 13 | 11 | 24 | |
Swell 3 Height (m) Direction Period (s) | SW 20 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSW 18 | SW 16 | NNW 10 | SSW 12 | SSE 10 | SE 9 | SSE 9 | S 21 | SE 9 | SE 9 | SE 9 | WNW 12 | WNW 12 | SSE 9 | W 11 |
99 | 39 | 31 | 31 | 33 | 102 | 127 | 33 | 81 | 35 | 22 | 32 | 79 | 19 | 19 | 20 | 28 | 28 | 8 | 10 | |
Wind waves Height (m) Direction Period (s) | NE 4 | ENE 6 | NE 6 | NE 6 | NE 6 | ENE 7 | NE 7 | ENE 6 | — | NE 7 | E 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | ENE 6 | NE 7 |
13 | 20 | 39 | 26 | 58 | 61 | 60 | 74 | — | 62 | 152 | 46 | 31 | 39 | 39 | 40 | 53 | 60 | 71 | 73 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 2 | 2 | 153 | 2 | 2 | 2 | 0 | 2 | 2 | 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.











