
Surf Forecasts:
Ranches surf forecast from 9 Aug 2026:
- Best quality surf: Sunday 9 Aug, 8AM (local time) - 3ft (0.9m), 7s period, NE swell with offshore winds.
- Most powerful swell: Saturday 15 Aug, 8PM (local time) - 4.5ft (1.3m), 7s period, NE swell with 140 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 8AM (local time) - 3ft (0.9m), 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 09) at 8AM. The primary swell is predicted to be 0.9m 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 1.3m 7s and forecast to arrive on Saturday (Aug 15) at 8PM. 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 16s period and expected on Thursday (Aug 13) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 9th Aug) | 3ft (0.9m) 7s |
| Best Surf | 8AM (Sun 9th Aug) | 3ft (0.9m) 7s |
| Most Powerful | 8PM (Sat 15th Aug) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
Alright, let’s get into it. The next couple of weeks are a bit of a mixed bag, but there’s definitely some light at the end of the tunnel. We’re looking at a slow start, a stretch of nothing, and then a promising run of building swell and clean conditions towards the back half of the window.
The week starts off quiet. Sunday the 9th has a small southwest pulse, but it’s weak and the conditions are just ordinary. The wind is cross-offshore, which is something, but the energy is just not there. The water temp is sitting at 80°F, which is right about where it should be for this time of year, nothing strange there.
Monday the 10th and Tuesday the 11th are basically a write-off. The swell drops out, and Tuesday morning is dead flat with glassy conditions. It’s pretty, but there’s nothing to ride. We’re looking at a real lull from Monday through to Thursday morning, with just tiny, short-period slop that isn’t worth suiting up for. The energy is super weak, in the tens to low hundreds at best.
The first real hope shows up on Wednesday afternoon the 19th. A long-period southwest swell is due in, and the morning is still small, but that afternoon the period jumps to 21 seconds and the energy kicks up to 325. The wind is a light cross-offshore, and it’s looking clean. This is just the appetizer though.
Thursday the 20th is where things start to get interesting. The morning is still small, but the afternoon brings a proper southwest groundswell. The period is a solid 18 seconds, the energy is up at 558, and we’ve got a moderate offshore wind. This is the first real standout of the window. The waves are set to be around 3ft, but with that long period and clean conditions, it’s going to be lining up nicely on the reef. It’s an advanced spot, and it’s fairly consistent, so expect a few heads out there, but nothing too hectic.
The weekend on the 22nd and 23rd is looking solid too. The swell builds through Saturday, with the afternoon seeing 5ft of northeast windswell and light offshore winds. The energy is moderate. Then Sunday the 23rd brings the biggest surf of the period, with 6ft waves and a similar light offshore breeze. The energy is up into the 320s, and while it’s a mix of shorter-period swell, it’s still going to offer some fun, clean waves. This is a good weekend for the experienced crew.
After that, it starts to fade again. Monday the 24th drops back down to around 3ft with less energy. The wind is still offshore, which is nice, but the punch is gone.
So, the standout days to circle are Thursday afternoon the 20th for that long-period groundswell and clean conditions, and then the weekend of the 22nd and 23rd for the biggest, most consistent swell of the run. The earlier part of the week is a wasteland, so don’t get your hopes up until at least Wednesday.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Mon afternoon, min 25°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Wed afternoon, min 25°C on Wed morning). Mainly fresh winds. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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) | SW 16 | SW 16 | NNW 10 | NE 7 | NE 7 | NE 7 | SSW 15 | NE 7 | S 20 | S 18 | N 12 | WNW 12 | W 12 | W 12 | NE 6 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | NNE 7 |
Wave Graph | |||||||||||||||||||||
130 | 127 | 33 | 43 | 59 | 36 | 0 | 36 | 0 | 0 | 102 | 28 | 11 | 11 | 78 | 88 | 105 | 86 | 113 | 132 | 131 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | off | off | glassy | cross-off | off | off | off | off | off | off | off | off | off | off | off | cross-off | off |
High Tide | 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 | 5:37AM0.37m | 5:42PM0.59m | 6:26AM0.41m | 6:14PM0.50m | ||||||||
Low Tide | 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 | 11:07AM0.08m | 00:21AM0.04m | 12:01PM0.14m | 00:48AM0.05m | ||||||||
6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | |
— | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 26 | 28 | 29 | 26 | 28 | 29 | 26 | 27 | 28 | 25 | 28 | 28 | 26 | 27 | 28 | 26 | 28 | 28 | 25 |
Feels °C | 28 | 28 | 27 | 28 | 30 | 27 | 30 | 30 | 26 | 28 | 26 | 25 | 27 | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | NE 7 | SSW 12 | SSW 16 | NE 7 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | S 18 | S 13 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 |
55 | 85 | 288 | 43 | 234 | 240 | 222 | 269 | 299 | 509 | 392 | 1029 | 868 | 773 | 636 | 496 | 496 | 383 | 280 | 276 | 219 | |
Swell 2 Height (m) Direction Period (s) | SSW 13 | S 18 | SSW 12 | SSW 15 | SSW 12 | NE 7 | NE 7 | SSE 9 | S 20 | SSW 13 | S 18 | WNW 12 | W 12 | ESE 7 | W 11 | W 12 | W 12 | W 11 | E 11 | E 11 | E 13 |
96 | 156 | 56 | 186 | 45 | 36 | 44 | 30 | 373 | 289 | 741 | 28 | 11 | 5 | 10 | 11 | 11 | 21 | 21 | 55 | 160 | |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 16 | NNW 10 | SSW 12 | SSE 10 | SSE 9 | SSW 11 | S 21 | SE 9 | SE 8 | SW 18 | SE 9 | NNW 8 | W 12 | NNW 7 | NNW 7 | SSW 18 | NNW 9 | W 11 | W 13 | S 18 |
130 | 127 | 33 | 81 | 35 | 33 | 41 | 79 | 19 | 18 | 12 | 12 | 6 | 11 | 5 | 5 | 30 | 16 | 22 | 29 | 99 | |
Wind waves Height (m) Direction Period (s) | E 7 | NE 7 | NE 5 | E 8 | NE 7 | — | E 7 | NE 7 | NE 6 | NE 6 | N 12 | NE 6 | NE 6 | NE 5 | NE 6 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | NNE 7 |
150 | 59 | 32 | 177 | 59 | — | 124 | 36 | 38 | 38 | 102 | 43 | 43 | 41 | 78 | 88 | 105 | 86 | 113 | 132 | 131 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 0 | 6 | 2 | 0 | 2 | 2 | 2 | 2 | 2 | 0 | 2 | 2 | 154 | 0 | 0 | 153 | 0 | 153 | 153 | 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.











