Number Fours Surf Break

Lat Long: 21.28° N 157.83° W

Issued: 7 pm 05 Jul 2026 (local time)

Forecast update in  hr  min

Today's Number Fours sea temperature is
26.5° C

Slightly warmer than usual

Number Fours surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Number Fours surf forecast from 6 Jul 2026:

  • Most powerful swell: Monday 6 Jul, 2PM (local time) - 7.5ft (2.3m), 8s period, ENE swell with 575 kJ wave energy.

Best Forecast Surf Conditions for Number Fours this week:

The most powerful waves expected at Number Fours in the next 16 days are 2.3m 8s and forecast to arrive on Monday (Jul 06) 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 1.9m 8s period and expected on Sunday (Jul 12) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Mon 6th Jul)7.5ft (2.3m) 8s

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


Updates in  hr  min  s Forecast update imminent

Hey folks, Rusty here. Let's break down what Number Fours is looking like.

Honestly, it’s a rough start. From Monday the 6th of July right through until about Tuesday the 14th of July, we’ve got a relentless cross-offshore wind screaming out of the ENE at 25 to 25 mph. That wind is just ruining the surface, even though there is some swell in the water. The wave energy is moderate, but it’s all short-period windswell at 7 to 8 seconds, so the waves are weak and messy. Water temp is about normal for this time of year.

On Sunday the 12th of July, the swell direction shifts to the SW at about 3ft, but the period cranks up to 16 seconds – that’s a proper long-period groundswell. Problem is, the wind is still howling cross-off at 22 mph, so it’ll be a choppy mess. That groundswell needs glass to shine at a reef.

The only real standout, and the best chance you’ve got, comes on Tuesday the 21st of July. The wind finally backs off to a moderate 15 mph from the ENE, still cross-off but way cleaner. The swell holds at around 6ft from the ENE with a short 7-second period, and the energy is moderate. The scores here are the best of the whole run. It’s still a windswell, but with lighter breeze, the reef will be cleaner. For anyone comfortable on a solid 6ft wave at a reef, that’s your day. Just remember, crowds are sometimes a factor, so expect some company.

Before that, from the 14th to the 20th of July, it’s more of the same: marginal to poor conditions with a few tiny pulses of long-period groundswell that are just too small and wind affected to get excited about.

So, the bottom line: a long wait for a clean window. Mark Tuesday the 21st of July on the calendar. That’s the one.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 25°C on Sun night, min 24°C on Sun night). Mainly strong winds.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Fri night. Warm (max 26°C on Fri afternoon, min 24°C on Wed night). Mainly fresh winds.

Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sun
12
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
0
1
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)
0.9
SSW
16
2.1
ENE
7
2.1
ENE
8
2.1
ENE
8
2.2
ENE
8
2
ENE
8
2.2
ENE
7
1.9
ENE
8
1.9
ENE
7
1.9
ENE
7
1.9
ENE
7
1.5
ENE
7
1.8
ENE
7
1.8
ENE
7
1.9
ENE
7
2.2
ENE
8
1.9
ENE
7
1.8
ENE
7
1.8
ENE
7
0.9
SW
16
0.9
SW
16
Wave Graph
Metric surfscale
Energy kJ
457
462
508
469
545
447
542
389
379
376
390
242
325
362
397
531
379
343
352
376
367
Wind (km/h)
35
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
40
ENE
40
ENE
35
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
35
ENE
40
ENE
35
ENE
30
ENE
35
ENE
35
ENE
Wind State
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
9:42AM0.35m
8:17PM0.41m
10:50AM0.43m
9:01PM0.34m
11:51AM0.52m
10:00PM0.26m
12:45PM0.61m
11:18PM0.20m
1:36PM0.69m
00:40AM0.17m
2:24PM0.76m
1:50AM0.16m
3:11PM0.80m
Low Tide
2:56AM0.01m
2:35PM0.23m
3:29AM-0.00m
4:35PM0.25m
4:06AM-0.02m
6:43PM0.23m
4:48AM-0.04m
8:17PM0.17m
5:36AM-0.06m
9:18PM0.12m
6:28AM-0.08m
10:04PM0.07m
7:21AM-0.09m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:54
5:54
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:16
7:16
7:16
7:16
7:16
7:16
7:16
7:15
 mm
1
1
Temp °C
25
25
25
24
25
25
24
25
25
24
25
25
25
25
26
25
25
25
24
25
25
Feels °C
22
21
21
20
21
21
20
21
21
20
21
21
24
24
24
23
23
22
21
22
22
Swell 1
Height (m)
Direction
Period (s)
0.9
SSW
16
0.8
SSW
16
0.9
SSW
15
0.8
SSW
15
0.8
SSW
14
0.8
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
SSW
13
0.6
S
13
0.6
S
12
0.6
S
12
0.5
S
12
0.5
S
12
0.4
SSW
11
0.5
SW
19
0.6
SSW
18
0.7
SW
18
0.7
SW
17
0.9
SW
16
0.9
SW
16
Energy kJ
457
337
402
284
280
273
195
192
187
125
113
112
75
71
41
184
221
316
309
376
367
Swell 2
Height (m)
Direction
Period (s)
0.3
SSW
13
0.2
SSE
9
0.2
SSE
9
0.2
SSE
8
0.1
NW
9
0.1
SE
8
0.1
SE
9
0.1
SE
8
0.2
SSE
8
0.2
W
15
0.3
SSE
7
0.2
W
14
0.2
W
13
0.2
W
13
0.4
SW
21
0.4
S
12
0.4
W
14
0.4
SSE
12
0.4
W
13
0.3
W
12
0.4
SSE
12
Energy kJ
34
8
8
7
3
3
3
3
7
17
11
15
13
13
110
42
63
46
55
28
47
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
10
0.2
SSW
13
0.1
W
10
0.1
NW
9
0.1
SE
10
0.1
S
10
0.1
W
18
0.1
S
18
0.1
SE
8
0.2
S
16
0.2
SSE
6
0.2
SSE
5
0.2
SSW
21
0.3
W
13
0.4
W
13
0.4
S
12
0.4
W
13
0.4
S
11
0.3
SSE
13
0.3
W
12
Energy kJ
9
17
2
3
4
2
6
6
3
21
3
3
45
29
55
44
54
39
32
27
Wind waves
Height (m)
Direction
Period (s)
2
ENE
7
2.1
ENE
7
2.1
ENE
8
2.1
ENE
8
2.2
ENE
8
2
ENE
8
2.2
ENE
7
1.9
ENE
8
1.9
ENE
7
1.9
ENE
7
1.9
ENE
7
1.5
ENE
7
1.8
ENE
7
1.8
ENE
7
1.9
ENE
7
2.2
ENE
8
1.9
ENE
7
1.8
ENE
7
1.8
ENE
7
1.8
NE
8
1.8
NE
8
Energy kJ
373
462
508
469
545
447
542
389
379
376
390
242
325
362
397
531
379
343
352
398
398
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
2
1
1
2
2
1
1
1
1
1
1
2
2
2
1
2
3
3
Distance (km)
42
126
127
32
126
126
39
39
42
39
39
39
31
31
39
31
44
48
31
39
39
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
1
1
1
1
1
1
2
2
2
1
3
3
3
Best forecast wave conditions in United States
Rating
(10 max)
3
2
2
4
2
2
4
3
2
1
1
2
4
1
2
3
2
2
3
3
3
Header Global
Rating
(10 max)
7
8
7
5
5
9
8
9
8
7
5
6
5
8
5
5
5
5
5
9
8
  • 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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