Surf Forecasts:
Ranches surf forecast from 1 Sep 2026:
- Best quality surf: Monday 7 Sep, 2AM (local time) - 4.5ft (1.4m), 11s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 8AM (local time) - 4.5ft (1.3m), 12s period, WSW swell with 496 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 8PM (local time) - 4ft (1.2m), 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 Tuesday (Sep 01) at 8PM. The primary swell is predicted to be 1.2m 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 12s and forecast to arrive on Tuesday (Sep 08) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 11s period and expected on Saturday (Sep 05) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Tue 1st Sep) | 4ft (1.2m) 7s |
| Best Surf | 2AM (Mon 7th Sep) | 4.5ft (1.4m) 11s |
| Most Powerful | 8AM (Tue 8th Sep) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Ranches over the next 16 days.
The Lowdown
Alright, let’s talk about Ranches. It’s a reef break, takes swell well, and for this time of year the water is about average, no surprises there.
The start of the period is a bust. We’re looking at some small, short-period wind swell from the NE, but it’s weak and the conditions are just ordinary. The first few days offer nothing of quality. Wednesday morning the 2nd has a tiny 0.3ft pulse from the SW, but the energy is basically nothing (30). It’s not worth suiting up.
Friday the 4th and Saturday the 5th bring a little more size, around 4ft to 4ft from the NE, but the period is still short (6 to 7 seconds) and the energy is moderate (between 103 and 165). The wind is offshore, which is a good sign, but the waves are ordinary and lack any real punch. You can paddle out, but it’s not going to get your heart racing.
The real standout, the one to block out your day for, is Tuesday the 8th. The afternoon sees a proper groundswell out of the WSW at 6ft, with a very long period of 13 seconds and a combined energy reading of 1140 – that’s strong, powerful stuff. The wind goes glassy, dead calm. This is excellent surf for experienced surfers. The reef will love that long-period energy, and with no wind, it’s going to be smooth and lined up. This is the best of the whole forecast.
The following morning, Wednesday the 9th, still has a solid 4ft from the WSW with a 12-second period and clean offshore winds, making it another good session. The energy is still strong (475). After that, it fades. Thursday the 10th and Friday the 11th show some small, long-period SW swell (2ft to 2ft, 17 to 19 seconds), but the energy is low to moderate, and the wind is messy. The glassy morning on the 11th is a tease, but it’s just too small.
The second week is quiet. There’s a tiny bump on the 14th with 3ft from the NE, but it’s weak and the wind is onshore. The 16th has a glassy morning with 2ft, again too small. The bottom line: if you want to get the best of Ranches, you’re looking at the afternoon of the 8th and the morning of the 9th. The rest is a waiting game.
Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 25°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Sat afternoon, min 25°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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) | NE 7 | NE 7 | NE 7 | SW 14 | NE 8 | S 15 | ENE 7 | S 14 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 7 | SW 11 | SW 11 | SW 11 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 140 | 165 | 156 | 30 | 164 | 0 | 0 | 0 | 153 | 151 | 139 | 84 | 59 | 103 | 66 | 62 | 97 | 439 | 263 | 304 | 414 |
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 | off | off | off | off | cross-off | off | off | off | off | off | on | cross-on | cross-off |
High Tide | 6:40PM0.33m | 8:41AM0.56m | 7:14PM0.25m | 9:59AM0.59m | 8:17PM0.19m | 11:18AM0.62m | 10:55PM0.16m | 12:25PM0.66m | 00:38AM0.18m | 1:20PM0.69m | 1:41AM0.23m | 2:07PM0.70m | 2:29AM0.29m | ||||||||
Low Tide | 1:58PM0.23m | 1:01AM0.05m | 3:56PM0.25m | 1:43AM0.06m | 6:40PM0.22m | 2:42AM0.08m | 7:48PM0.17m | 4:04AM0.09m | 8:21PM0.13m | 5:29AM0.08m | 8:49PM0.10m | 6:43AM0.07m | 9:15PM0.08m | ||||||||
 |  |  | | |  | | | | | | | | | | | | | |  | | |
 | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 28 | 27 | 26 | 27 | 29 | 26 | 27 | 27 | 26 | 27 | 27 | 25 | 28 | 29 | 26 | 27 | 28 | 26 | 27 | 27 | 27 |
Feels °C | 27 | 24 | 26 | 28 | 29 | 26 | 26 | 24 | 24 | 25 | 24 | 24 | 28 | 30 | 26 | 28 | 28 | 26 | 29 | 27 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | SSE 12 | SSE 12 | SSE 12 | S 11 | S 12 | S 12 | S 12 | SSW 11 | SSW 11 | SW 11 | SW 11 | SSW 16 | SW 11 | SW 12 |
| kJ | 333 | 314 | 373 | 427 | 406 | 279 | 206 | 187 | 387 | 503 | 510 | 614 | 686 | 617 | 455 | 372 | 503 | 439 | 619 | 304 | 414 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | S 12 | SW 14 | SSE 10 | S 12 | S 11 | SE 13 | S 14 | S 14 | E 14 | E 14 | E 14 | E 13 | SSW 18 | SSW 16 | SSW 16 | SSW 19 | NE 12 | SW 11 | SSW 17 | SSW 15 |
| kJ | 113 | 77 | 50 | 33 | 66 | 37 | 138 | 198 | 93 | 33 | 35 | 32 | 55 | 120 | 162 | 318 | 205 | 232 | 263 | 642 | 596 |
Swell 3 Height (m) Direction Period (s) | S 10 | SW 14 | S 10 | SW 14 | SW 13 | SE 15 | S 10 | SSW 13 | E 14 | SW 12 | SW 13 | SSW 20 | SSW 18 | E 13 | E 13 | E 13 | S 12 | SSW 18 | NNE 6 | S 10 | ENE 12 |
| kJ | 28 | 53 | 33 | 30 | 27 | 36 | 18 | 17 | 16 | 6 | 26 | 37 | 63 | 53 | 88 | 87 | 70 | 263 | 37 | 71 | 213 |
Wind waves Height (m) Direction Period (s) | NE 7 | NE 7 | NE 7 | NE 7 | NE 8 | ENE 7 | ENE 7 | ENE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 7 | — | — | — | — |
| kJ | 140 | 165 | 156 | 217 | 164 | 169 | 204 | 191 | 153 | 151 | 139 | 84 | 59 | 103 | 66 | 62 | 97 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 153 | 0 | 2 | 0 | 154 | 153 | 154 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 9 | 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.
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