Radz surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 1 am Tuesday 19 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
25.3° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Radz this week:

The most powerful waves expected at Radz in the next 16 days are 0.7m 13s and forecast to arrive on Sunday (May 24) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Thursday (May 21) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Sun 24th May)2.5ft (0.7m) 13s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 24°C on Tue morning, min 23°C on Tue night). Mainly strong winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Sat afternoon, min 23°C on Fri morning). Mainly strong winds.

Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
NW
11
0.6
NW
10
0.7
NW
10
0.4
NNW
11
0.7
NNW
10
0.4
NNW
10
0.4
NW
10
0.4
NW
10
0.4
NW
10
0.4
NNW
10
0.5
NW
11
0.5
NW
11
0.5
NW
10
0.4
NNW
15
0.7
NW
13
0.7
NW
12
0.7
NW
12
0.6
NW
11
0.6
NW
11
0.5
NW
11
0.4
NW
10
Wave Graph
Metric surfscale
Energy kJ
104
89
108
43
97
41
24
24
25
40
57
55
50
85
183
154
144
101
96
56
36
Wind (km/h)
30
E
30
E
30
E
35
E
35
E
40
E
40
ENE
40
ENE
40
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
E
35
E
35
E
35
E
35
E
35
ENE
35
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
5:51PM0.81m
6:46PM0.77m
7:41PM0.72m
7:30AM0.27m
8:31PM0.66m
10:39AM0.34m
9:15PM0.61m
11:49AM0.44m
9:52PM0.56m
12:30PM0.53m
10:24PM0.51m
Low Tide
9:21AM-0.00m
10:03AM0.06m
10:48AM0.14m
4:50AM0.26m
11:43AM0.23m
4:46AM0.23m
1:28PM0.33m
4:59AM0.20m
3:49PM0.39m
5:16AM0.16m
5:40PM0.41m
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:50
5:50
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:05
7:06
7:06
7:07
7:07
7:07
3
Temp °C
24
24
24
24
24
23
23
24
23
23
23
23
23
24
23
24
24
23
24
24
23
23
23
23
21
21
19
18
20
18
18
18
18
18
19
18
20
20
19
20
21
19
Swell 1
Height (m)
Direction
Period (s)
0.6
NW
11
0.6
NW
10
0.7
NW
10
0.4
NNW
10
0.7
NNW
10
0.4
NNW
10
0.4
NW
10
0.4
NW
10
0.4
NW
10
0.4
NNW
10
0.5
NW
11
0.5
NW
11
0.5
NW
10
0.4
NNW
15
0.7
NW
13
0.7
NW
12
0.7
NW
12
0.6
NW
11
0.6
NW
11
0.5
NW
11
0.4
NW
10
Energy kJ
104
89
108
38
97
41
24
24
25
40
57
55
50
85
183
154
144
101
96
56
36
Swell 2
Height (m)
Direction
Period (s)
0.4
SW
18
0.3
SW
13
0.3
SSW
15
0.4
NNW
11
0.3
SSW
16
0.3
NW
9
0.2
SSW
14
0.2
SSW
14
0.2
SSW
15
0.2
SSW
15
0.2
SSW
14
0.1
S
16
0.2
NNW
16
0.5
NW
10
0.4
NW
10
0.2
S
14
0.2
S
13
0.2
S
13
0.2
S
13
0.2
S
14
0.2
S
13
Energy kJ
79
27
44
43
50
12
20
20
21
21
19
5
26
49
24
15
14
14
14
15
14
Swell 3
Height (m)
Direction
Period (s)
0.3
SW
13
0.2
SSW
18
0.1
SW
16
0.3
SSW
16
0.1
SW
13
0.2
SSW
13
0.2
S
16
0.2
S
16
0.1
S
13
0.1
S
12
0.1
S
18
0.1
S
13
0.1
S
16
0.2
S
16
0.2
S
15
0.1
S
16
0.1
S
19
Energy kJ
28
30
10
50
7
16
20
19
3
3
6
4
5
19
17
5
7
Wind waves
Height (m)
Direction
Period (s)
1.7
E
8
1.6
E
8
1.7
E
8
2.2
E
8
2.4
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.2
ENE
8
2.2
ENE
8
2.1
ENE
8
2.1
ENE
8
2.2
ENE
8
Energy kJ
323
324
383
588
748
812
893
910
1024
844
857
770
798
836
829
770
634
568
583
569
634
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
1
1
3
1
1
1
3
1
1
1
3
1
2
1
1
2
2
Distance (km)
8
8
8
30
32
32
179
194
166
163
171
163
164
166
32
30
32
30
31
32
32
Best forecast wave conditions in Oahu
Rating
(10 max)
1
1
1
2
1
1
3
3
2
2
1
2
2
Best forecast wave conditions in United States
Rating
(10 max)
3
1
4
3
1
3
3
3
3
3
3
2
1
2
3
3
2
2
1
2
3
Header Global
Rating
(10 max)
4
5
5
4
4
4
4
5
5
7
5
5
9
6
5
5
4
4
4
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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