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Surf Forecasts:
Ranches surfForecast / HAW – Oahu / USA
16 Day Weather and Surf, issued 1 pm Friday 15 May 2026 HSTForecast update in hr min s Forecast update imminent
Ranches surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ranches sea temperature is
25.3° C
(Which is normal for this time of year)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 (May 15) at 8PM. The primary swell is predicted to be 0.9m and 12s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Ranches in the next 16 days are 1.6m 8s and forecast to arrive on Friday (May 22) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 7s period and expected on Thursday (May 21) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 15th May) | 3ft (0.9m) 12s |
| Best Surf | 8PM (Fri 15th May) | 3ft (0.9m) 12s |
| Most Powerful | 2AM (Fri 22nd May) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Ranches over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 27°C on Sun afternoon, min 24°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Mon afternoon, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
NW 12 | NW 11 | NW 11 | NE 8 | NNW 10 | NE 8 | SW 21 | NE 6 | NE 7 | SSW 14 | NE 7 | NNW 12 | NNW 10 | NNW 10 | NNW 10 | NNW 11 | NE 8 | NE 7 | NE 7 | NE 8 | NE 8 | |
282 | 126 | 96 | 103 | 69 | 69 | 224 | 47 | 67 | 0 | 69 | 88 | 73 | 95 | 68 | 99 | 204 | 171 | 188 | 338 | 253 | |
Wind (km/h) | |||||||||||||||||||||
cross | off | on | glassy | glassy | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | |
High Tide | 3:54PM0.65m | 3:26AM0.16m | 4:39PM0.69m | 4:16AM0.12m | 5:28PM0.71m | 5:10AM0.08m | 6:19PM0.70m | 6:15AM0.06m | 7:12PM0.66m | 7:36AM0.06m | 8:07PM0.61m | 9:15AM0.09m | 9:03PM0.55m | 10:50AM0.15m | |||||||
Low Tide | 10:56PM0.02m | 9:05AM-0.15m | 11:58PM0.00m | 9:44AM-0.14m | 1:01AM-0.00m | 10:26AM-0.12m | 2:06AM-0.01m | 11:13AM-0.08m | 3:08AM-0.02m | 12:07PM-0.02m | 4:04AM-0.03m | 1:13PM0.05m | 4:51AM-0.04m | ||||||||
 |  |  |  |  | | | | | | | | | | | | | | | | | |
 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 |
 | 7:04 | — | — | 7:04 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:06 | — | — | 7:06 | — | 7:07 |
2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 26 | 25 | 25 | 25 | 26 | 26 | 27 | 25 | 26 | 27 | 24 | 25 | 26 | 24 | 25 | 26 | 24 | 25 | 25 | 24 | 24 |
26 | 27 | 26 | 26 | 28 | 28 | 29 | 25 | 28 | 28 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 22 | 23 | 21 | |
Swell 1 Height (m) Direction Period (s) | NW 12 | NW 11 | NE 8 | NE 8 | NE 7 | NE 8 | NE 8 | NE 6 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | NNW 11 | NNW 10 | S 16 | S 16 | S 15 | S 15 |
 kJ | 282 | 126 | 82 | 82 | 54 | 69 | 61 | 47 | 233 | 168 | 161 | 175 | 246 | 231 | 163 | 99 | 41 | 134 | 127 | 157 | 109 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | NE 7 | NW 11 | NNW 11 | NNW 10 | NNW 10 | SSW 15 | SSW 14 | SSW 19 | SSW 19 | SSW 17 | SSW 18 | NNW 10 | NNW 10 | NNW 10 | SSW 14 | SSW 13 | SSW 13 | NNW 10 | NW 10 | NW 11 |
| kJ | 169 | 56 | 96 | 78 | 69 | 68 | 249 | 239 | 251 | 212 | 92 | 207 | 73 | 95 | 68 | 152 | 68 | 70 | 38 | 24 | 30 |
Swell 3 Height (m) Direction Period (s) | NE 7 | SW 14 | SSW 15 | SW 14 | SSW 15 | SSW 15 | SW 21 | NNW 9 | SSE 10 | SSE 10 | SSE 10 | NNW 12 | SE 6 | ESE 8 | SSE 9 | SSW 18 | S 16 | NNW 10 | SE 13 | SE 13 | S 18 |
| kJ | 22 | 48 | 152 | 103 | 87 | 131 | 224 | 33 | 39 | 38 | 37 | 88 | 11 | 11 | 30 | 62 | 139 | 38 | 44 | 42 | 102 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NE 7 | ENE 6 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 8 | NE 7 | NE 7 | NE 8 | NE 8 |
| kJ | — | — | — | — | — | — | — | — | 67 | 75 | 69 | 49 | 60 | 64 | 66 | 88 | 204 | 171 | 188 | 338 | 253 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 154 | 0 | 0 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
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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