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Surf Forecasts:
Radz surfForecast / HAW – Oahu / USA
16 Day Weather and Surf, issued 7 pm Tuesday 21 Apr 2026 HSTForecast update in hr min s Forecast update imminent
Radz surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Radz sea temperature is
24.4° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Radz this week:
The surf forecast for Radz over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Apr 22) at 5AM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 1.1m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Radz in the next 16 days are 1.3m 13s and forecast to arrive on Wednesday (Apr 22) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Thursday (Apr 23) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 22nd Apr) | 3.5ft (1.1m) 14s |
| Best Surf | 5AM (Wed 22nd Apr) | 3.5ft (1.1m) 14s |
| Most Powerful | 11AM (Wed 22nd Apr) | 4.5ft (1.3m) 13s |
Table - best surf conditions forecast for Radz over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 24°C on Tue night, min 22°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sat morning. Warm (max 24°C on Mon afternoon, min 22°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tue 28 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
NNE 14 | NNE 13 | NW 13 | NW 13 | NNE 11 | NNE 10 | NNE 10 | NNE 7 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NW 15 | NW 13 | |
437 | 606 | 509 | 364 | 334 | 194 | 296 | 250 | 316 | 311 | 346 | 373 | 324 | 282 | 277 | 193 | 198 | 188 | 130 | 258 | 352 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 8:32PM0.70m | 9:42PM0.68m | 10:37AM0.28m | 10:36PM0.66m | 11:50AM0.37m | 11:16PM0.64m | 12:32PM0.46m | 11:48PM0.60m | 1:08PM0.54m | 00:14AM0.56m | 1:40PM0.62m | ||||||||||
Low Tide | 10:54AM0.11m | 11:55AM0.18m | 6:37AM0.24m | 2:08PM0.25m | 6:21AM0.22m | 4:11PM0.29m | 6:26AM0.19m | 5:34PM0.31m | 6:37AM0.16m | 6:38PM0.32m | 6:50AM0.13m | 7:32PM0.33m | |||||||||
 |  | | |  | |  | | | |  | |  | | | | | | |  | | |
 | — | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:01 | — |
 | 6:52 | — | 6:53 | — | — | 6:53 | — | — | 6:53 | — | — | 6:54 | — | — | 6:54 | — | — | 6:55 | — | — | 6:55 |
— | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | 2 | 8 | 7 | |
Temp °C | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 22 | 23 |
26 | 26 | 24 | 24 | 23 | 22 | 21 | 21 | 22 | 22 | 20 | 21 | 21 | 22 | 22 | 22 | 23 | 23 | 22 | 20 | 21 | |
Swell 1 Height (m) Direction Period (s) | NNE 14 | NNE 13 | NNE 12 | NNE 12 | NNE 11 | NNE 10 | NNW 12 | W 13 | WNW 12 | NNW 12 | NW 11 | NW 13 | NW 12 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NW 13 |
 kJ | 437 | 606 | 433 | 330 | 334 | 194 | 90 | 89 | 87 | 94 | 182 | 336 | 287 | 270 | 277 | 193 | 198 | 188 | 125 | 125 | 352 |
Swell 2 Height (m) Direction Period (s) | NNW 15 | NW 14 | NW 13 | NW 13 | NNW 12 | NNW 12 | W 15 | NNW 11 | NW 11 | W 12 | WNW 11 | SW 16 | SW 15 | NW 12 | NNW 12 | NW 11 | NNW 11 | NW 11 | NW 10 | NW 15 | ESE 8 |
| kJ | 279 | 532 | 509 | 364 | 251 | 180 | 109 | 47 | 30 | 70 | 39 | 61 | 57 | 282 | 235 | 176 | 149 | 115 | 85 | 258 | 21 |
Swell 3 Height (m) Direction Period (s) | NW 12 | W 14 | W 13 | W 13 | W 13 | W 12 | W 12 | ESE 8 | NNW 14 | NNW 15 | SW 15 | WNW 11 | WNW 10 | SSW 14 | SW 14 | SW 14 | SW 13 | SW 13 | NW 16 | NW 10 | SW 12 |
| kJ | 146 | 191 | 127 | 123 | 82 | 75 | 44 | 11 | 36 | 84 | 36 | 23 | 20 | 82 | 102 | 48 | 45 | 44 | 130 | 52 | 23 |
Wind waves Height (m) Direction Period (s) | — | — | E 7 | E 8 | E 8 | NE 4 | NNE 10 | NNE 7 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | — | — | — | — | — | — | — | NE 7 |
| kJ | — | — | 39 | 40 | 28 | 19 | 296 | 250 | 316 | 311 | 346 | 373 | 324 | — | — | — | — | — | — | — | 135 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 6 | 6 | 33 | 40 | 33 | 30 | 39 | 32 | 10 | 33 | 8 | 8 | 30 | 8 | 6 | 30 | 8 | 8 | 8 |
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 Radz 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 Radz Surf forecast
The above surf forecast table for Radz provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Radz can be found by selecting the local surf guide option on the grey menu. Our Radz 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 (Radz) 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 Radz 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.
Radz 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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