Number Fours surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 1 pm Tuesday 26 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
25.2° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Number Fours this week:

The surf forecast for Number Fours over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (May 31) at 2AM. The primary swell is predicted to be 0.8m and 16s period with a secondary swell of 0.9m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Number Fours in the next 16 days are 1.3m 18s and forecast to arrive on Tuesday (Jun 02) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Tuesday (Jun 02) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 31st May)2.5ft (0.8m) 16s
Best Surf 2AM (Sun 31st May)2.5ft (0.8m) 16s
Most Powerful 8PM (Tue 2nd Jun)4.5ft (1.3m) 18s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Wed night. Warm (max 24°C on Tue afternoon, min 23°C on Tue afternoon). Mainly strong winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 25°C on Sun afternoon, min 23°C on Fri night). Mainly fresh winds.

Tue
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
1
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
1
1
1
1
1
1
2
1
1
2
1
1
2
2
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
7
2.1
ENE
7
1.6
ENE
7
1.7
ENE
7
1.8
ENE
7
1.5
ENE
7
1.4
ENE
7
0.6
S
21
0.8
S
20
0.9
S
19
0.9
S
18
0.9
S
17
0.8
S
16
0.8
S
16
0.8
SSW
15
0.7
S
15
0.6
S
19
0.8
S
18
0.9
SSW
18
0.7
S
21
0.8
S
20
Wave Graph
Metric surfscale
Energy kJ
705
468
273
286
312
223
180
329
495
593
509
470
339
318
300
209
276
408
516
428
529
Wind (km/h)
40
ENE
35
ENE
30
ENE
35
ENE
30
ENE
35
ENE
35
ENE
25
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
ENE
15
ENE
20
ENE
20
ENE
25
ENE
25
ENE
25
ENE
25
ENE
35
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
00:50AM0.25m
2:27PM0.55m
1:31AM0.21m
2:59PM0.59m
2:11AM0.17m
3:31PM0.62m
2:51AM0.15m
4:04PM0.63m
3:30AM0.13m
4:39PM0.64m
4:10AM0.12m
5:16PM0.64m
4:54AM0.12m
Low Tide
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
11:37PM0.05m
8:52AM-0.06m
00:19AM0.05m
9:25AM-0.05m
1:02AM0.05m
9:59AM-0.03m
clear
clear
clear
clear
rain showers
clear
clear
clear
rain showers
clear
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
<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
7:07
7:07
7:07
7:07
7:08
7:08
7:08
1
2
Temp °C
24
23
23
24
23
24
24
23
24
24
23
24
24
24
24
25
24
24
24
24
24
19
18
21
20
19
21
21
20
20
20
20
22
22
23
24
24
22
23
22
23
21
Swell 1
Height (m)
Direction
Period (s)
0.4
S
12
0.6
S
15
0.6
S
14
0.5
S
14
0.6
S
13
0.5
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
0.8
S
16
0.9
E
8
0.8
SSW
15
0.8
E
8
0.8
SSW
14
0.8
S
18
0.9
SSW
18
0.8
SSW
16
1
S
16
Energy kJ
47
150
144
89
121
73
103
329
495
593
509
470
339
89
300
76
276
408
516
359
529
Swell 2
Height (m)
Direction
Period (s)
0.3
S
16
0.4
NW
16
0.5
NW
15
0.5
NW
14
0.4
NW
13
0.4
NW
12
0.4
NW
12
0.5
S
12
0.5
N
10
0.4
S
11
0.5
S
13
0.8
E
8
0.4
S
12
0.8
S
16
0.7
NE
7
0.7
S
15
0.6
S
19
0.6
S
14
0.5
S
13
0.7
S
21
0.8
S
20
Energy kJ
45
91
104
96
61
52
37
68
52
39
80
72
43
318
54
209
273
144
89
428
485
Swell 3
Height (m)
Direction
Period (s)
0.3
NW
18
0.1
SW
18
0.2
SSE
6
0.3
SSE
8
0.3
NNE
13
0.4
NNE
12
0.3
N
11
0.4
NNE
11
0.5
S
11
0.4
NNE
10
0.4
NNE
11
0.4
S
12
0.4
NNW
10
0.7
NE
8
0.4
N
8
0.4
NNE
8
0.4
NNE
8
0.3
NNE
7
0.4
NE
7
0.6
S
13
0.3
ESE
7
Energy kJ
50
12
3
13
32
48
20
38
61
31
37
44
31
55
21
22
20
11
13
125
11
Wind waves
Height (m)
Direction
Period (s)
2.5
ENE
7
2.1
ENE
7
1.6
ENE
7
1.7
ENE
7
1.8
ENE
7
1.5
ENE
7
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
1.5
ENE
7
1.6
ENE
7
1
NE
7
1.2
ENE
7
0.8
E
8
0.7
NE
7
1
ENE
7
1
E
7
0.8
E
8
1.2
ENE
7
1
ENE
6
Energy kJ
705
468
273
286
312
223
180
204
191
222
249
100
157
76
48
117
112
72
121
60
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
2
2
2
2
2
3
3
2
2
2
2
2
2
3
2
3
3
4
Distance (km)
128
32
31
39
31
31
39
31
32
31
31
31
2
0
1
1
1
31
31
31
31
Best forecast wave conditions in Oahu
Rating
(10 max)
2
3
3
2
2
2
3
3
3
3
3
3
2
2
2
3
3
3
4
4
Best forecast wave conditions in United States
Rating
(10 max)
1
3
3
3
4
2
2
4
4
3
3
3
3
2
4
2
4
3
3
4
4
Header Global
Rating
(10 max)
7
7
6
7
9
9
6
5
5
5
5
7
6
5
4
4
4
4
7
7
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 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.

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