Surf Forecasts:
Ranches surf forecast from 29 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 5AM (local time) - 3.5ft (1.1m), 8s period, NE swell with offshore winds.
- Most powerful swell: Tuesday 1 Sep, 11PM (local time) - 4.5ft (1.3m), 7s period, NE swell with 169 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 8AM (local time) - 3ft (0.9m), 6s 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 Saturday (Aug 29) at 8AM. The primary swell is predicted to be 0.9m and 6s 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 Tuesday (Sep 01) at 11PM. 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 8s period and expected on Wednesday (Sep 02) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 29th Aug) | 3ft (0.9m) 6s |
| Best Surf | 5AM (Tue 1st Sep) | 3.5ft (1.1m) 8s |
| Most Powerful | 11PM (Tue 1st Sep) | 4.5ft (1.3m) 7s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s have a good look at the charts for Ranches. Gotta be honest with you, for a place that’s got good bones – a reef break that’s exposed to the swell – this forecast is a real test of patience.
We’ve got a bit of a flat start from this Saturday, the 29th of August, through to Thursday the 3rd of September. There’s nothing really worth paddling out for in that first week. Swell heights are mostly hovering around the 0.7ft to 4ft mark with weak energy levels (between 9 and 156 in the combined energy reading), and the wind is offshore but the waves are just too small and weak to do anything with. It’s frustrating.
Now, Friday the 4th of September is a dead loss. That’s a write-off. The real window of interest doesn't open up until Saturday the 5th of September. That morning we see a little push to 4ft from the NE with moderate offshore wind, and the energy ticks up to 158. Still ordinary, but it’s a start.
The standout for this entire outlook is the small window around Monday the 7th of September through to Wednesday the 9th. On Monday the 7th, we get solid 4ft to 5ft swell from the NE, with moderate offshore winds and combined energy reading of 205 to 371, which is a moderate wave energy. The water temperature is a very warm 81°, which is about a normal 1° anomaly for this time of year – feels like bathwater. The best session in that run looks to be Tuesday morning, the 8th of September. That’s when we have 5ft of NE swell, a good 8-second period, with moderate offshore winds and a combined energy of 382. Then Wednesday morning the 9th of September is also looking prime with 5ft, gentle offshore wind, and energy at 367. This is the best we’ve got.
After that, the swell fades again. Thursday the 10th of September is flat, and Friday through Sunday the 11th to 13th of September is a write-off with messy, cross-onshore winds and escalating wind speeds up to 25 mph from the SE. That won't be surfable. For the second week, the only small glimmer is Sunday the 13th of September afternoon when the wind goes light cross-off with a small 3ft swell, but it’s not going to be anything special.
So, the call is simple: you’re waiting for Monday the 7th to Wednesday the 9th of September. Focus on Tuesday morning the 8th for the best chance of a clean, chest-high wave at Ranches. It’s not huge – 5ft is fun-sized and manageable for most advanced surfers – and with the constant offshore wind, it should be clean. Everything else is either too small, too windy, or too ordinary to bother with.
Stay patient,
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Sat afternoon, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Wed afternoon, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | W 11 | NE 6 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 8 | NE 7 | NE 7 | NE 8 | NE 7 | NE 7 | N 6 | NE 7 | NE 6 | NNE 7 | SW 13 | NE 7 |
Wave Graph | |||||||||||||||||||||
9 | 73 | 128 | 139 | 135 | 91 | 134 | 118 | 137 | 141 | 156 | 156 | 125 | 115 | 77 | 11 | 77 | 51 | 11 | 27 | 99 | |
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 | cross-off | off | off | off | off | off | off | cross-off | off |
High Tide | 5:09PM0.54m | 5:50AM0.47m | 5:38PM0.48m | 6:38AM0.50m | 6:08PM0.41m | 7:34AM0.53m | 6:40PM0.33m | 8:41AM0.56m | 7:14PM0.25m | 9:59AM0.59m | 8:17PM0.19m | 11:18AM0.62m | 10:55PM0.16m | ||||||||
Low Tide | 10:49AM0.10m | 11:35PM0.05m | 11:40AM0.14m | 00:00AM0.05m | 12:40PM0.19m | 00:28AM0.05m | 1:58PM0.23m | 1:01AM0.05m | 3:56PM0.25m | 1:43AM0.06m | 6:40PM0.22m | 2:42AM0.08m | 7:48PM0.17m | 4:04AM0.09m | |||||||
6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 26 | 27 | 28 | 25 | 27 | 28 | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 27 | 29 | 25 | 27 | 27 | 25 |
Feels °C | 27 | 27 | 26 | 26 | 26 | 25 | 27 | 26 | 26 | 27 | 26 | 26 | 29 | 30 | 27 | 27 | 27 | 24 | 25 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | S 12 | SSW 16 | S 12 | NE 7 | SSW 15 | SSW 14 | S 19 | SSW 18 | S 18 | NE 7 | S 16 | S 16 | NE 7 | S 14 | S 14 | NE 6 | S 13 | S 13 | S 13 |
219 | 215 | 106 | 226 | 100 | 91 | 191 | 183 | 273 | 333 | 314 | 156 | 427 | 406 | 77 | 268 | 250 | 51 | 222 | 165 | 162 | |
Swell 2 Height (m) Direction Period (s) | SW 18 | SSW 17 | SSW 17 | SSW 12 | SSW 16 | SSW 15 | S 11 | S 11 | SSW 14 | SSW 14 | S 12 | S 17 | SSE 10 | S 12 | S 15 | S 10 | SSE 10 | S 13 | NNE 7 | E 13 | E 13 |
80 | 115 | 186 | 46 | 162 | 199 | 82 | 82 | 127 | 115 | 77 | 373 | 33 | 69 | 279 | 52 | 33 | 229 | 11 | 29 | 29 | |
Swell 3 Height (m) Direction Period (s) | W 11 | W 11 | W 12 | SSE 12 | W 11 | S 11 | S 8 | SSW 19 | S 10 | S 10 | SW 14 | SW 14 | SW 14 | SW 13 | S 11 | N 6 | SSW 13 | SSE 9 | E 13 | SW 13 | SSW 20 |
9 | 9 | 11 | 48 | 9 | 87 | 12 | 123 | 50 | 28 | 53 | 50 | 29 | 27 | 61 | 11 | 17 | 16 | 13 | 27 | 37 | |
Wind waves Height (m) Direction Period (s) | ENE 6 | NE 6 | NE 7 | NE 7 | NE 7 | ENE 7 | NE 7 | NE 7 | NE 7 | NE 8 | NE 7 | ENE 8 | NE 8 | NE 7 | E 8 | ENE 7 | NE 7 | E 8 | NE 6 | NE 5 | NE 7 |
65 | 73 | 128 | 139 | 135 | 168 | 134 | 118 | 137 | 141 | 156 | 284 | 125 | 115 | 160 | 66 | 77 | 177 | 51 | 66 | 99 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 136 | 0 | 0 | 0 | 0 | 2 | 153 | 0 | 2 | 136 | 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.











