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Surf Forecasts:

Radz surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 am Thursday 12 Mar 2026 HST
Forecast 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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Mar 12) at 8PM. The primary swell is predicted to be 0.8m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Radz in the next 12 days are 2.0m 13s and forecast to arrive on Tuesday (Mar 17) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 8s period and expected on Friday (Mar 13) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Thu 12th Mar)2.5ft (0.8m) 10s
Best Surf11AM (Tue 17th Mar)6ft (1.9m) 12s
Most Powerful 8AM (Tue 17th Mar)6.5ft (2.0m) 13s

Table - best surf conditions forecast for Radz over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 202mm), heaviest during Fri night. Warm (max 26°C on Thu morning, min 22°C on Thu afternoon). Winds increasing (light winds from the S on Thu night, strong winds from the SSW by Fri night).

Days 3-6 Weather Summary Heavy rain (total 30mm), heaviest during Mon night. Warm (max 25°C on Sun morning, min 21°C on Mon afternoon). Winds decreasing (fresh winds from the WSW on Sun afternoon, calm by Tue morning).

Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
1
0
0
0
0
0
0
0
1
3
1
1
3
4
1
3
2
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
W
0.9
WNW
1
W
0.7
WNW
0.6
WNW
2.4
SW
2.1
WSW
1.7
SW
2.1
WSW
2.3
WSW
2.1
W
1.9
W
1.5
W
0.9
NNW
1.5
NNW
1.9
NNW
1.9
NNW
1.9
NNW
1.8
NNW
1.8
NNW
1.6
NNW
Period(s) (?)1010101010888881010101413121211121112
Wave
Graph
(?)Metric surfscale
Energy kJ (?)25914619810280744563320592721918716423362734997931854843800743
Wind
(km/h)
15
S
20
SSE
20
S
35
S
40
SSW
45
SSW
40
SW
40
SW
40
SW
35
SW
30
WSW
10
SSW
10
WSW
10
N
10
SW
5
NW
15
NNE
10
ENE
15
ENE
20
ENE
25
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscrosscrosscrosscross-
off		cross-
on		cross-
on		crossglasscross-
on		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
12:24AM
0.66
11:08AM
0.29
12:50AM
0.69
12:04PM
0.33
1:13AM
0.71
12:44PM
0.39
1:35AM
0.72
1:23PM
0.45
1:56AM
0.70
2:02PM
0.52
2:16AM
0.68
2:42PM
0.58
2:36AM
0.63
Low Tide
/ height (m)
3:13PM
0.20
8:57AM
0.28
4:44PM
0.18
8:19AM
0.27
5:39PM
0.15
8:12AM
0.26
6:25PM
0.14
8:15AM
0.23
7:07PM
0.14
8:26AM
0.20
7:49PM
0.17
8:40AM
0.16
8:33PM
0.21
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Sunrise6:43--6:41--6:41--6:39--6:39--6:39--6:37--
Sunset-6:39--6:39--6:40--6:40--6:40--6:42--6:42-
part cloud
thunderstorm
thunderstorm
heavy rain
heavy rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
light rain
light rain
heavy rain
light rain
light rain
light rain
rain showers
rain showers
part cloud
Rain (mm)
-511133247282442131151422111-
Temp. °C262323232224232324252423242221222221222322
Feels °C (?)262224201820182121222122252323242321222321
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

View detailed surf forecast for Radz at:
surf-forecast.com

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 12 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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