Number Fours surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 1 pm Saturday 23 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Number Fours surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Number Fours sea temperature is
25.6° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Number Fours this week:

The most powerful waves expected at Number Fours in the next 16 days are 2.5m 8s 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 0.6m 10s period and expected on Friday (May 29) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Sun 24th May)8ft (2.5m) 8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 24°C on Sat afternoon, min 22°C on Sat night). Mainly strong winds.

Days 5-7 Weather Summary

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

Sat
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
1
1
0
0
0
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
1
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)
2.5
ENE
8
2.5
ENE
8
2.2
ENE
8
2.2
ENE
8
2.5
ENE
8
2
ENE
8
1.9
ENE
8
2.1
ENE
7
2.2
ENE
7
1.9
ENE
7
2.3
ENE
7
1.7
ENE
7
1.7
ENE
7
1.7
ENE
7
1.5
ENE
7
1.6
ENE
7
0.6
S
21
0.8
S
20
0.9
S
19
0.9
S
18
0.9
S
17
Wave Graph
Metric surfscale
Energy kJ
899
857
692
675
795
508
430
462
528
369
560
327
294
278
212
242
329
495
593
509
470
Wind (km/h)
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
40
ENE
40
ENE
35
ENE
40
ENE
35
ENE
30
ENE
35
ENE
35
ENE
25
ENE
30
ENE
30
ENE
25
ENE
25
ENE
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
10:30PM0.44m
12:35PM0.34m
11:20PM0.37m
1:17PM0.42m
00:06AM0.30m
1:54PM0.49m
00:50AM0.25m
2:27PM0.55m
1:31AM0.21m
2:59PM0.59m
2:11AM0.17m
3:31PM0.62m
2:51AM0.15m
Low Tide
4:11PM0.16m
5:45AM-0.05m
5:51PM0.17m
6:13AM-0.06m
7:16PM0.16m
6:39AM-0.06m
8:25PM0.13m
7:03AM-0.06m
9:23PM0.11m
7:27AM-0.07m
10:12PM0.09m
7:53AM-0.07m
10:55PM0.07m
8:21AM-0.06m
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:48
5:48
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:06
7:06
7:07
7:07
7:07
7:07
7:07
Temp °C
24
23
24
24
23
24
24
23
24
24
23
24
24
23
24
24
23
24
24
24
24
19
18
20
19
18
20
20
19
19
19
19
19
20
19
20
21
20
21
20
21
22
Swell 1
Height (m)
Direction
Period (s)
0.6
S
15
0.6
S
15
0.5
S
14
0.5
S
14
0.5
S
14
0.5
S
14
0.5
S
13
0.5
S
13
0.4
S
13
0.4
S
12
0.6
S
15
0.6
S
14
0.6
S
14
0.6
S
13
0.6
S
12
0.6
S
12
0.6
S
21
0.8
S
20
0.9
S
19
0.9
S
18
0.9
S
17
Energy kJ
159
155
93
93
97
97
87
84
51
47
150
144
129
121
105
103
329
495
593
509
470
Swell 2
Height (m)
Direction
Period (s)
0.3
NNW
15
0.4
NW
14
0.4
NW
12
0.4
NW
12
0.3
NW
11
0.2
NNW
11
0.2
NNW
11
0.2
NNW
10
0.3
S
16
0.3
S
16
0.4
NW
16
0.4
NW
15
0.5
NW
14
0.4
NW
13
0.4
NNE
12
0.4
NNE
12
0.5
S
12
0.6
NNE
10
0.4
S
11
0.5
S
13
0.4
S
12
Energy kJ
44
46
39
37
20
12
11
10
45
45
66
75
96
61
49
46
67
80
39
80
44
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
12
0.2
SSE
11
0.3
S
16
0.3
S
16
0.1
SW
20
0.1
S
20
0.1
S
20
0.1
SW
19
0.1
NW
10
0.3
NW
18
0.1
SW
18
0.1
SW
18
0.1
SW
16
0.4
NNE
13
0.4
NW
12
0.4
NW
12
0.4
NNE
11
0.4
S
11
0.4
NNE
10
0.4
NNE
11
0.4
NNE
10
Energy kJ
14
12
46
46
16
7
7
15
4
50
12
12
11
55
37
39
39
39
31
46
34
Wind waves
Height (m)
Direction
Period (s)
2.5
ENE
8
2.5
ENE
8
2.2
ENE
8
2.2
ENE
8
2.5
ENE
8
2
ENE
8
1.9
ENE
8
2.1
ENE
7
2.2
ENE
7
1.9
ENE
7
2.3
ENE
7
1.7
ENE
7
1.7
ENE
7
1.7
ENE
7
1.5
ENE
7
1.6
ENE
7
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
1.4
ENE
7
1.3
ENE
7
Energy kJ
899
857
692
675
795
508
430
462
528
369
560
327
294
278
212
242
208
225
197
176
172
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
1
1
1
1
1
1
2
2
2
2
2
1
2
3
2
3
3
2
Distance (km)
130
42
127
126
42
126
39
31
39
46
39
46
126
31
31
39
31
31
31
1
31
Best forecast wave conditions in Oahu
Rating
(10 max)
3
2
2
2
2
2
3
2
2
2
2
3
3
3
3
3
Best forecast wave conditions in United States
Rating
(10 max)
2
3
1
1
2
1
2
3
2
2
4
2
2
4
2
2
4
3
3
4
3
Header Global
Rating
(10 max)
5
5
5
4
4
4
5
9
9
8
7
6
6
7
9
9
9
6
5
4
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
submit an eyeball surf report

Quick surf report for Number Fours:

join our community of surf reporters

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 Number Fours 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.


Information about the Number Fours Surf forecast

The above surf forecast table for Number Fours provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Number Fours can be found by selecting the local surf guide option on the grey menu. Our Number Fours 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 (Number Fours) 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 Number Fours 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.

Number Fours is 5 km (3 miles) from Honolulu. If you plan a vacation in Oahu, look for hotels and other accommodation in Honolulu. Honolulu has rooms for a wide range of budgets as well as car hire and transport links.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest