
Surf Forecasts:
Radz surf forecast from 9 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 11PM (local time) - 3ft (0.9m), 9s period, WNW swell with cross-offshore winds.
- Most powerful swell: Tuesday 15 Sep, 11AM (local time) - 1.5ft (0.5m), 20s period, SW swell with 188 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 11PM (local time) - 3ft (0.9m), 9s period with WNW swell.
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 Tuesday (Sep 08) at 11PM. The primary swell is predicted to be 0.9m and 9s period. 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 0.5m 20s and forecast to arrive on Tuesday (Sep 15) 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 2.1m 7s period and expected on Thursday (Sep 10) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 8th Sep) | 3ft (0.9m) 9s |
| Best Surf | 11PM (Tue 8th Sep) | 3ft (0.9m) 9s |
| Most Powerful | 11AM (Tue 15th Sep) | 1.5ft (0.5m) 20s |
Table - best surf conditions forecast for Radz over the next 16 days.
Short Range ForecastLight rain (total 4mm), mostly falling on Wed afternoon. Warm (max 29°C on Tue afternoon, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Fri afternoon, min 24°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 8 | NW 8 | NW 11 | NW 8 | NW 9 | NW 8 | NW 8 | NW 8 | NNE 8 | SW 15 | SW 15 | SW 14 | NNE 9 | NNE 9 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | SW 21 |
Wave Graph | ||||||||||||||||||||
213 | 80 | 187 | 80 | 122 | 33 | 20 | 9 | 58 | 110 | 107 | 100 | 99 | 94 | 107 | 112 | 115 | 84 | 82 | 72 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:11AM0.44m | 1:59PM0.75m | 1:56AM0.50m | 2:23PM0.71m | 2:38AM0.55m | 2:44PM0.65m | 3:20AM0.59m | 3:00PM0.59m | 4:01AM0.62m | 3:11PM0.54m | 4:45AM0.62m | 3:14PM0.49m | ||||||||
Low Tide | 8:20PM0.24m | 6:59AM0.11m | 8:34PM0.21m | 7:44AM0.14m | 8:50PM0.18m | 8:28AM0.19m | 9:07PM0.15m | 9:10AM0.25m | 9:24PM0.13m | 9:53AM0.31m | 9:42PM0.12m | 10:39AM0.37m | 10:01PM0.12m | |||||||
— | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | |
mm | — | — | — | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 29 | 30 | 29 | 29 | 28 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 25 | 25 | 25 | 26 | 26 | 27 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | ENE 11 | ENE 10 | ENE 9 | ENE 8 | NW 9 | E 12 | E 12 | E 12 | NNE 8 | NE 8 | E 10 | ENE 10 | NNE 9 | NNE 9 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 |
802 | 427 | 216 | 169 | 122 | 104 | 103 | 96 | 58 | 59 | 225 | 128 | 99 | 94 | 107 | 112 | 115 | 84 | 82 | 53 | |
Swell 2 Height (m) Direction Period (s) | W 8 | NW 8 | NW 11 | NW 8 | E 13 | NW 8 | NW 8 | SW 16 | SSW 16 | SW 15 | NNE 8 | NE 8 | SW 13 | SW 13 | ENE 9 | ENE 9 | ENE 8 | ESE 8 | SW 22 | SW 21 |
213 | 80 | 187 | 80 | 161 | 33 | 20 | 67 | 99 | 110 | 59 | 74 | 45 | 44 | 26 | 15 | 13 | 14 | 119 | 72 | |
Swell 3 Height (m) Direction Period (s) | SW 9 | W 7 | E 13 | E 13 | SSW 13 | SW 16 | SW 18 | NW 8 | NW 9 | SW 9 | SW 15 | SW 14 | SW 16 | NW 15 | SW 12 | SSW 15 | NW 12 | SSW 14 | SSW 14 | SSW 13 |
178 | 43 | 168 | 168 | 16 | 68 | 80 | 9 | 12 | 13 | 107 | 100 | 64 | 33 | 24 | 21 | 23 | 19 | 18 | 17 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 11 | E 11 | — | — | ENE 10 | E 9 | E 5 | E 5 | E 6 | E 5 | E 7 | E 7 |
— | — | — | — | 228 | 319 | 232 | 158 | 358 | 338 | — | — | 125 | 130 | 28 | 45 | 49 | 29 | 56 | 72 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 8 | 0 | 0 | 5 | 8 | 16 | 30 | 30 | 8 | 8 | 7 | 4 | 4 | 8 | 7 | 8 | 8 | 8 | 8 | 8 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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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.










