Radz surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 7 pm Wednesday 27 May 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
24.9° C
(Which is normal for this time of year)

Radz surf forecast from 28 May 2026:

  • Best quality surf: Sunday 31 May, 5AM (local time) - 3ft (0.9m), 7s period, NE swell with cross-offshore winds.
  • Most powerful swell: Thursday 28 May, 5AM (local time) - 3.5ft (1.0m), 13s period, NW swell with 315 kJ wave energy.
  • Next surfable swell (1★+): Sunday 31 May, 5AM (local time) - 3ft (0.9m), 7s period with NE 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 Sunday (May 31) at 5AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.6m and 9s. 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 1.0m 13s and forecast to arrive on Thursday (May 28) at 5AM. Winds are predicted to be cross-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 28) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sun 31st May)3ft (0.9m) 7s
Best Surf 5AM (Sun 31st May)3ft (0.9m) 7s
Most Powerful 5AM (Thu 28th May)3.5ft (1.0m) 13s

Table - best surf conditions forecast for Radz over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Thu morning. Warm (max 24°C on Thu afternoon, min 23°C on Wed night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Sat night. Warm (max 25°C on Tue afternoon, min 22°C on Sat night). Wind will be generally light.

Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wed
3
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
NW
13
1
NW
12
0.9
NW
12
0.9
NW
11
0.7
NW
11
0.7
NW
11
0.6
NNW
11
0.7
NNW
10
0.6
NNW
10
0.5
NNW
10
0.8
NE
7
0.5
N
8
0.6
N
10
0.6
NNW
10
0.8
NE
7
0.5
NNW
9
0.6
N
12
0.9
NNW
11
1
NNW
10
0.9
NNW
9
0.8
NNW
9
Wave Graph
Metric surfscale
Energy kJ
431
281
240
185
130
126
76
86
75
52
65
32
73
75
66
46
104
198
209
121
92
Wind (km/h)
30
ENE
30
ENE
30
E
30
ENE
30
E
30
ENE
25
E
25
E
20
E
15
E
15
E
20
ENE
15
E
15
ENE
15
ENE
15
E
20
NE
20
ENE
20
ESE
25
E
25
E
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
cross-off
cross-off
High Tide
11:21PM0.42m
2:03PM0.72m
11:47PM0.39m
2:34PM0.75m
00:13AM0.37m
3:06PM0.76m
00:36AM0.36m
3:41PM0.76m
00:52AM0.35m
4:17PM0.75m
4:54PM0.74m
5:32PM0.72m
Low Tide
8:11PM0.39m
6:15AM0.08m
9:06PM0.37m
6:39AM0.06m
9:54PM0.36m
7:06AM0.05m
10:41PM0.35m
7:36AM0.04m
11:33PM0.35m
8:07AM0.04m
8:37AM0.05m
9:08AM0.07m
clear
rain showers
rain showers
part cloud
clear
clear
clear
clear
clear
rain showers
rain showers
clear
rain showers
clear
clear
clear
part cloud
rain showers
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:48
5:48
5:48
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:08
7:08
7:09
7:09
7:10
7:10
7:10
1
1
1
1
1
1
Temp °C
23
23
24
23
24
24
23
24
24
24
24
24
24
24
24
23
24
25
24
25
25
20
21
22
20
21
21
20
22
22
24
24
24
25
24
23
22
24
26
25
26
25
Swell 1
Height (m)
Direction
Period (s)
1.1
NW
13
1
NW
12
0.9
NW
12
0.9
NW
11
0.7
NW
11
0.7
NW
11
0.6
NNW
11
0.7
NNW
10
0.6
NNW
10
0.5
NNW
10
0.8
NE
7
0.6
E
8
0.6
N
10
0.6
E
8
0.6
E
8
0.6
E
8
0.6
N
12
0.9
NNW
11
1
NNW
10
0.9
NNW
9
0.8
NNW
9
Energy kJ
431
281
240
185
130
126
76
86
75
52
65
45
73
43
44
46
104
198
209
121
92
Swell 2
Height (m)
Direction
Period (s)
0.3
N
12
0.5
N
12
0.4
N
11
0.5
N
11
0.5
N
10
0.4
NNE
10
0.5
NNE
11
0.4
NNE
10
0.4
NE
10
0.4
N
8
0.7
E
8
0.5
N
8
0.5
E
8
0.6
NNW
10
0.6
NNW
9
0.5
NNW
9
0.4
NNW
9
0.4
SSW
16
0.3
SSW
15
0.5
S
17
0.5
S
16
Energy kJ
24
73
35
57
48
31
65
38
24
21
57
32
31
75
66
46
26
84
42
140
129
Swell 3
Height (m)
Direction
Period (s)
0.2
NNE
13
0.1
SW
16
0.3
NNE
13
0.3
NNE
13
0.3
NNE
12
0.3
NNE
12
0.3
SSW
18
0.3
SSW
17
0.3
SSW
16
0.3
SSW
16
0.5
NNW
9
0.4
NNW
9
0.4
NNE
8
0.3
NNE
7
0.3
SSW
18
0.3
SSW
16
0.4
SSW
16
0.3
SSW
19
0.3
SSW
18
0.1
N
16
0.4
N
14
Energy kJ
17
10
33
33
28
27
62
57
52
49
47
28
19
10
61
53
86
72
61
5
63
Wind waves
Height (m)
Direction
Period (s)
1.7
ENE
7
1.6
ENE
7
1.6
ENE
7
1.6
ENE
7
1.6
ENE
7
1.6
ENE
7
1.6
ENE
7
1.4
ENE
7
1.3
ENE
7
1.3
ENE
8
0.8
ENE
7
0.8
ENE
7
0.6
ENE
7
0.8
NE
7
0.9
ENE
5
1
E
7
0.9
ENE
7
0.8
ENE
7
1.1
E
5
1.3
E
6
Energy kJ
301
244
230
244
244
265
249
197
167
181
68
64
33
57
32
112
91
71
67
115
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Distance (km)
10
8
32
8
10
10
8
8
8
2
2
8
5
6
10
2
33
10
6
8
8
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
2
1
1
1
1
2
2
2
3
3
3
4
4
4
4
4
1
Best forecast wave conditions in United States
Rating
(10 max)
3
4
4
4
2
1
3
1
1
4
2
2
4
3
3
4
4
4
4
4
1
Header Global
Rating
(10 max)
9
9
7
5
5
5
5
7
7
6
5
4
5
4
4
5
5
5
5
4
4
  • 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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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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