Surf Forecasts:
Ranches surf forecast from 7 Aug 2026:
- Best quality surf: Saturday 8 Aug, 11PM (local time) - 1.5ft (0.5m), 18s 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★+): Friday 7 Aug, 5AM (local time) - 1.5ft (0.5m), 14s 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 5AM. The primary swell is predicted to be 0.5m and 14s period with a secondary swell of 0.6m and 8s. 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 Sunday (Aug 09) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 7th Aug) | 1.5ft (0.5m) 14s |
| Best Surf | 11PM (Sat 8th Aug) | 1.5ft (0.5m) 18s |
| 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
Alright folks, Rusty here. Let’s get into it for Ranches.
We’re looking at a pretty quiet start to the run, with the first real surfable waves not showing up until Friday afternoon, 7th August. Even then, it’s tiny, just 2ft of long-period SW groundswell (14 seconds), cross-offshore wind, and combined wave energy is pretty weak at 91. It’s clean but really ordinary. Saturday the 8th morning has a little 2ft NE windswell with a short 6-second period, but the wind is offshore and mellow, so it’s clean. The standout is actually Sunday morning, 9th August. We’ve got 2ft SW groundswell with a 16-second period, clean offshore winds, and the combined energy jumps to 203 (moderate wave energy). That’s as good as it gets this week – small but clean, long period lines for the advanced crew at the reef.
Monday the 10th has a little glassy bump in the morning, 3ft NE windswell, but it’s short period and weak. Tuesday through Thursday are mostly flat or tiny, with some poor surf conditions. There’s a glimmer on Friday the 14th afternoon with 3ft NE windswell, but it’s still ordinary.
Now, the real pop comes on Monday the 17th of August. Both morning and afternoon show some promise: 4ft to 5ft of NE windswell, 8-second period, under moderate offshore winds, and combined energy hitting 299 to 355 (moderate wave energy). The wind is clean and the swell is building. That’s the best swell we’ve seen, and it’s surfable for advanced paddlers, but at 5ft it’s still manageable. Tuesday the 18th backs off a bit with 4ft, but the wind gets fresh out of the NE at 30 km/h, so it’s less attractive.
Late in the forecast, Thursday the 20th of August morning has a weird one: 2ft SW swell with a very long 16-second period, clean cross-offshore wind, and combined energy at 220. That’s a long period groundswell, and for a reef break like Ranches, that could actually be fun – clean, waist-high lines with plenty of energy in the water. It’s not a standout, but it’s interesting.
Overall, the best bet is Monday the 17th of August for the biggest, cleanest swell. Sunday the 9th is the smaller, cleaner alternative. The water temperature anomaly isn’t given, so it’s just what you’d expect for this time of year.
Stay patient, this one starts slow.
- Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Sat afternoon, min 25°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Mon afternoon. Warm (max 29°C on Mon afternoon, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||
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 8 | SW 21 | SW 14 | SSW 19 | NE 6 | SW 18 | SSW 17 | SW 16 | SW 16 | NE 7 | NE 7 | NE 7 | NNW 8 | SSW 14 | NE 6 | S 20 | S 18 | S 18 | WNW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 28 | 0 | 91 | 0 | 32 | 154 | 0 | 130 | 127 | 91 | 71 | 62 | 13 | 0 | 51 | 0 | 0 | 0 | 28 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | off | off | off | off | off | off | glassy | cross-off | off | off | off | off | off | off | off |
High Tide | 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 | 4:33PM0.72m | 4:50AM0.33m | ||||||
Low Tide | 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 | 9:26AM-0.00m | 11:26PM0.04m | |||||||
 |  |  |  | | | | | | | |  | | | | | | | | |
 | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 7:08 | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 27 | 28 | 26 | 28 | 29 | 27 | 28 | 29 | 25 | 28 | 29 | 26 |
Feels °C | 26 | 30 | 30 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 31 | 32 | 28 | 30 | 30 | 25 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | NE 7 | NE 7 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | S 18 | S 18 | S 16 |
| kJ | 138 | 77 | 91 | 108 | 175 | 120 | 99 | 96 | 85 | 288 | 71 | 62 | 240 | 218 | 269 | 317 | 515 | 613 | 890 |
Swell 2 Height (m) Direction Period (s) | NE 8 | SSE 11 | SSE 11 | SSW 19 | SSW 18 | SW 18 | SSW 17 | SW 16 | S 18 | SSW 12 | SSW 15 | SSW 15 | SSE 8 | SSE 9 | SSE 8 | S 20 | SSW 13 | SSW 13 | SE 9 |
| kJ | 28 | 23 | 38 | 148 | 221 | 154 | 202 | 130 | 156 | 56 | 186 | 234 | 23 | 31 | 40 | 373 | 289 | 235 | 12 |
Swell 3 Height (m) Direction Period (s) | SSE 11 | SW 21 | SW 20 | SSE 11 | SSE 10 | SE 7 | SSE 10 | SSW 18 | SW 16 | NNW 10 | SSW 12 | SSW 12 | NNW 8 | SSW 11 | S 21 | SE 9 | SE 8 | SE 9 | WNW 12 |
| kJ | 40 | 115 | 99 | 39 | 18 | 11 | 19 | 102 | 127 | 33 | 81 | 45 | 13 | 41 | 79 | 19 | 18 | 20 | 28 |
Wind waves Height (m) Direction Period (s) | — | NE 5 | NE 5 | NE 6 | NE 6 | NE 6 | ENE 6 | NE 7 | NE 7 | NE 7 | — | E 8 | ENE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 |
| kJ | — | 17 | 10 | 32 | 32 | 36 | 60 | 73 | 59 | 91 | — | 172 | 59 | 47 | 51 | 40 | 37 | 43 | 43 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 2 | 2 | 0 | 2 | 2 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 2 | 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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