Number Fours surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 7 am Saturday 30 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
25.1° C
(Which is normal for this time of year)

Number Fours surf forecast from 30 May 2026:

  • Best quality surf: Tuesday 2 Jun, 11AM (local time) - 3.5ft (1.1m), 16s period, S swell with cross-offshore winds.
  • Most powerful swell: Tuesday 2 Jun, 8PM (local time) - 4.5ft (1.3m), 18s period, SSW swell with 1,081 kJ wave energy.
  • Next surfable swell (1★+): Sunday 31 May, 2AM (local time) - 2.5ft (0.8m), 16s period with SSW swell.

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 0.7m 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 0.9m 7s period and expected on Saturday (May 30) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 31st May)2.5ft (0.8m) 16s
Best Surf11AM (Tue 2nd Jun)3.5ft (1.1m) 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

Mostly dry. Warm (max 25°C on Sun afternoon, min 23°C on Sat morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Tue afternoon, min 23°C on Wed night). Winds increasing (light winds from the ENE on Tue morning, strong winds from the ENE by Thu afternoon).

Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
2
1
2
3
2
2
3
4
3
3
2
0
0
0
0
1
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)
0.9
S
17
0.8
S
16
0.8
SSW
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
1.1
S
16
1.1
S
16
1.1
S
18
1.3
SSW
16
1.2
SSW
16
1.1
SSW
16
1
S
15
0.9
SSW
14
0.8
SSW
14
1.5
ENE
8
1.8
ENE
8
1.7
ENE
8
Wave Graph
Metric surfscale
Energy kJ
470
334
333
300
209
276
408
516
448
635
620
751
916
758
620
447
346
273
240
368
353
Wind (km/h)
25
ENE
25
ENE
15
ENE
15
ENE
15
NE
15
NNE
20
ENE
25
NE
20
NE
15
ENE
20
NE
15
ENE
25
ENE
35
ENE
35
ENE
40
ENE
40
ENE
35
ENE
40
ENE
35
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
4:04PM0.63m
3:30AM0.13m
4:39PM0.64m
4:10AM0.12m
5:16PM0.64m
4:54AM0.12m
5:54PM0.62m
5:44AM0.11m
6:33PM0.60m
6:46AM0.12m
7:12PM0.58m
8:01AM0.14m
7:52PM0.54m
Low Tide
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
1:46AM0.04m
10:35AM-0.01m
2:28AM0.04m
11:15AM0.03m
3:07AM0.03m
12:04PM0.07m
3:41AM0.02m
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
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
7:08
7:09
7:09
7:10
Temp °C
24
24
24
24
25
24
24
25
24
25
26
25
25
24
23
24
24
23
24
24
23
22
22
24
25
25
25
23
24
24
26
26
26
24
20
20
20
20
19
20
20
19
Swell 1
Height (m)
Direction
Period (s)
1.1
NE
8
0.8
S
16
0.8
SSW
16
0.8
SSW
15
0.7
S
15
0.8
SSW
14
0.8
S
18
0.9
SSW
18
0.9
SSW
16
1.2
ENE
7
1.1
S
16
1.1
S
18
1.3
SSW
16
1.2
SSW
16
1.1
SSW
16
1
S
15
0.9
SSW
14
0.9
N
12
0.8
N
12
0.7
N
11
0.6
N
11
Energy kJ
129
334
333
300
209
276
408
516
448
132
620
751
916
758
620
447
346
247
177
123
81
Swell 2
Height (m)
Direction
Period (s)
0.9
S
17
0.8
NE
7
0.7
E
8
0.6
E
7
0.4
N
8
0.6
S
19
0.6
S
14
0.5
S
13
0.7
S
21
1.1
S
16
1
ENE
7
1
ENE
6
0.4
NNW
9
0.4
NNW
9
0.5
N
11
0.8
N
12
0.8
N
12
0.8
SSW
14
0.7
SSW
14
0.6
SSW
14
0.6
S
13
Energy kJ
470
73
60
40
20
273
144
89
428
635
88
75
28
29
65
187
177
273
204
145
126
Swell 3
Height (m)
Direction
Period (s)
0.5
S
12
0.7
E
8
0.7
NE
7
0.4
N
8
0.3
NNW
11
0.4
NNW
11
0.3
NNW
10
0.4
NNW
10
0.6
S
13
0.8
S
20
0.8
S
19
0.8
SSW
14
0.1
SE
10
0.4
SSE
8
0.2
SSE
8
0.2
SSE
8
0.1
SE
9
0.2
ENE
10
0.1
W
11
0.1
W
10
Energy kJ
69
55
52
21
23
37
19
31
125
485
475
280
4
23
7
7
3
10
2
2
Wind waves
Height (m)
Direction
Period (s)
0.9
NE
7
0.9
ENE
8
1.1
ENE
8
1.1
ENE
8
1.3
ENE
7
1.3
ENE
7
1.5
E
7
1.5
ENE
7
1.9
E
7
1.7
E
7
1.5
E
7
1.6
ENE
7
1.5
ENE
8
1.8
ENE
8
1.7
ENE
8
Energy kJ
79
99
131
128
169
158
218
192
331
262
212
232
240
368
353
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
2
3
3
3
4
4
4
4
3
3
1
3
3
3
3
2
1
Distance (km)
31
1
0
7
0
0
1
1
1
0
1
1
31
39
39
39
44
39
39
42
33
Best forecast wave conditions in Oahu
Rating
(10 max)
3
3
2
2
2
3
3
3
4
4
4
4
4
3
1
3
3
3
3
2
2
Best forecast wave conditions in United States
Rating
(10 max)
3
3
4
3
2
4
4
3
4
4
4
4
4
4
3
4
3
4
3
2
4
Header Global
Rating
(10 max)
7
7
6
5
5
4
5
5
6
4
4
5
5
5
4
5
8
5
5
7
9
  • 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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