Radz surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 1 pm Thursday 21 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
25.5° 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 1.2m 14s and forecast to arrive on Wednesday (May 27) at 2PM. 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 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Wed 27th May)4ft (1.2m) 14s

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 3mm), mostly falling on Sat morning. Warm (max 24°C on Thu afternoon, min 22°C on Sat night). Mainly strong winds.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Sun night. Warm (max 24°C on Sun afternoon, min 22°C on Sun night). Mainly fresh winds.

Thu
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
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)
0.4
NW
10
0.4
NW
10
0.4
NNW
10
0.5
NW
11
0.5
NW
11
0.4
NNW
16
0.7
NNW
15
0.7
NW
13
0.9
NW
12
0.7
NW
12
0.6
NW
11
0.6
NNW
11
0.5
NW
11
0.4
NW
10
0.3
NW
20
0.6
NW
18
0.9
NW
16
1.1
NW
14
1.2
NW
14
1.1
NW
13
1
NW
12
Wave Graph
Metric surfscale
Energy kJ
24
25
41
57
56
102
191
180
216
144
101
79
56
27
62
263
432
459
557
431
286
Wind (km/h)
40
ENE
35
ENE
35
ENE
40
ENE
35
ENE
40
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
35
E
30
ENE
30
E
30
E
30
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
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
1:03PM0.61m
10:53PM0.46m
1:34PM0.68m
11:21PM0.42m
Low Tide
4:50AM0.26m
11:43AM0.23m
4:46AM0.23m
1:28PM0.33m
4:59AM0.20m
3:49PM0.39m
5:16AM0.16m
5:40PM0.41m
5:34AM0.13m
7:04PM0.40m
5:53AM0.11m
8:11PM0.39m
6:15AM0.08m
clear
clear
clear
clear
clear
rain showers
part cloud
rain showers
rain showers
clear
rain showers
clear
clear
rain showers
clear
part cloud
rain showers
part cloud
rain showers
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:50
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:06
7:07
7:07
7:07
7:07
7:07
7:08
1
1
1
2
1
1
1
1
1
Temp °C
24
23
23
23
23
23
23
23
24
24
23
23
24
23
24
24
23
23
24
23
24
20
18
18
18
18
18
18
19
20
20
19
19
20
19
21
20
19
20
21
20
21
Swell 1
Height (m)
Direction
Period (s)
0.4
NW
10
0.4
NW
10
0.4
NNW
10
0.5
NW
11
0.5
NW
11
0.4
NNW
16
0.7
NNW
15
0.7
NW
13
0.9
NW
12
0.7
NW
12
0.6
NW
11
0.6
NNW
11
0.5
NW
11
0.4
NW
10
0.4
NW
10
0.6
NW
18
0.9
NW
16
1.1
NW
14
1.2
NW
14
1.1
NW
13
1
NW
12
Energy kJ
24
25
41
57
56
102
191
180
216
144
101
79
56
27
24
263
432
459
557
431
286
Swell 2
Height (m)
Direction
Period (s)
0.1
S
16
0.2
SSW
15
0.2
SSW
15
0.2
SSW
14
0.2
NNW
19
0.5
NW
10
0.4
NNW
10
0.4
NW
10
0.2
S
14
0.2
S
13
0.2
S
13
0.1
S
13
0.1
S
13
0.2
S
13
0.3
NW
20
0.3
NW
10
0.2
NNW
9
0.2
NNW
9
0.2
S
14
0.2
N
12
0.3
N
12
Energy kJ
5
21
21
18
35
50
39
24
15
14
14
3
3
13
62
15
8
8
15
11
24
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
12
0.1
S
13
0.1
S
12
0.1
S
18
0.2
SSW
13
0.2
SSW
13
0.1
S
13
0.2
S
15
0.2
S
16
0.1
S
16
0.1
S
15
0.1
S
19
0.1
S
13
0.2
S
16
0.2
S
14
0.2
S
14
0.1
N
12
0.2
S
13
0.1
SW
16
Energy kJ
6
3
3
6
18
17
3
17
21
5
4
7
3
19
16
16
3
13
10
Wind waves
Height (m)
Direction
Period (s)
2.5
ENE
8
3
ENE
9
2.5
ENE
9
3
ENE
8
2.5
ENE
8
3
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.3
ENE
8
2.5
ENE
8
2.1
ENE
8
2.1
ENE
8
2.3
ENE
7
2
ENE
8
1.9
ENE
8
2.2
ENE
8
1.8
ENE
7
1.7
ENE
7
1.8
ENE
7
1.8
ENE
7
Energy kJ
1024
1175
905
1014
850
1047
989
869
909
721
866
579
522
581
447
408
531
363
305
340
337
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
3
1
3
1
3
1
1
2
1
1
2
2
1
2
2
2
2
2
Distance (km)
311
163
168
171
163
179
164
32
164
163
32
164
163
32
32
163
30
30
30
8
30
Best forecast wave conditions in Oahu
Rating
(10 max)
3
2
2
2
3
3
3
2
2
Best forecast wave conditions in United States
Rating
(10 max)
2
3
3
3
3
3
2
3
1
1
3
1
1
3
2
1
4
3
3
4
2
Header Global
Rating
(10 max)
5
7
6
5
4
8
5
6
5
5
4
4
4
6
5
6
9
6
5
9
7
  • 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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