Number Fours Surf Break

Lat Long: 21.28° N 157.83° W

Issued: 7 am 02 Jul 2026 (local time)

Forecast update in  hr  min

Today's Number Fours sea temperature is
26.3° C

Normal for this time of year

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 2 Jul 2026:

  • Most powerful swell: Wednesday 8 Jul, 2AM (local time) - 7ft (2.2m), 8s period, ENE swell with 540 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 2.2m 8s and forecast to arrive on Wednesday (Jul 08) 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 1.7m 8s period and expected on Thursday (Jul 02) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Wed 8th Jul)7ft (2.2m) 8s

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


Updates in  hr  min  s Forecast update imminent

Alright, Rusty here. Let’s have a look at what’s on the cards for Number Fours over the next couple of weeks.

Straight up, I gotta be honest with you – it’s a rough stretch. The whole 16-day window is looking pretty grim, with hardly a moment where I’d give it a proper green light. There’s a long, frustrating gap with no real surf to recommend, so don’t go getting your hopes up too high.

From Thursday the 2nd of July through pretty much the entire run, the wind is locked in from the ENE, blowing a solid 18 to 25 mph, sitting in that cross-off position. That’s not going to do us any favours. The wave energy is bouncing around – we start with moderate combined energy around the 517 to 551 mark Thursday and Friday, but the swell is a short-period 5 ft from the ENE, churning up messy, choppy lines. The water’s sitting at a warm 79°, which is about normal for the time of year, so at least you won’t be cold while you’re getting frustrated.

The only real standout, if you can even call it that, is very short-lived. On Saturday the 4th of July, we see a total shift. The swell drops right down to 2 ft, but it swings around to the S and SSW, and the period jumps up to 20 to 21 seconds – that’s proper long-period groundswell energy, and the combined energy hits 865. That’s solid, powerful stuff for the size. The problem is, it’s tiny. For a reef break like Number Fours, that long-period swell can offer some nice, lined-up waves, but you’d need a bigger board and a whole lot of patience. The wind is still a fresh cross-off, so it won’t be glassy clean, but it’s the best looking pulse in the whole forecast. Don’t blink, because by Sunday the 5th of July, the swell direction shifts to SSW, the period drops to 18 seconds, and the combined energy stays high around 781 to 946, but it’s all labelled as poor surf. The long period might make it tricky at this reef.

After that, from Monday the 6th of July right through to Thursday the 16th of July, we’re stuck in a rut. Swell sits at 5 ft to 7 ft, but it’s all short-period ENE windswell, constant 7 to 8 seconds. The combined energy is moderate, between 299 and 827, and the wind never lets up. The wave comment keeps saying “marginal” or “poor surf conditions.” The only slight glimmer is from Monday the 13th to Thursday the 16th of July, where some of the sessions are called “marginal” rather than “poor,” but with that stiff cross-off breeze and short, messy swell, it’s still not a session you’d write home about.

Honestly, if you’re desperate for a paddle, that Saturday the 4th of July is your best, and really only, shout for something with a bit of quality in the water, and even then, it’s a gamble with the size. For the rest, the setup looks more suited to a kite than a surfboard – strong wind, consistent swell, but poor quality for a paddle surfer. I wouldn't be holding my breath until the forecasts change.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Thu afternoon, min 24°C on Thu night). Mainly fresh winds.

Days 4-6 Weather Summary

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

Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
1
1
1
1
1
2
0
0
0
1
0
1
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
ENE
8
1.5
ENE
8
1.6
ENE
8
1.6
ENE
8
1.6
ENE
8
1.7
ENE
8
1.6
ENE
8
0.7
S
20
0.8
SSW
19
0.8
SSW
18
0.8
SSW
18
0.9
SSW
16
2.1
ENE
7
2
ENE
7
2.2
ENE
7
2.1
ENE
8
2.2
ENE
8
2.2
ENE
8
2.1
ENE
8
1.8
ENE
8
2.1
ENE
8
Wave Graph
Metric surfscale
Energy kJ
292
278
277
285
294
336
326
377
486
418
408
457
432
417
498
469
512
540
495
393
481
Wind (km/h)
30
ENE
30
ENE
35
ENE
30
ENE
35
ENE
30
ENE
35
ENE
30
ENE
35
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
40
ENE
40
ENE
35
ENE
35
ENE
30
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
6:01PM0.64m
6:25AM0.20m
6:33PM0.61m
7:25AM0.23m
7:06PM0.55m
8:31AM0.28m
7:40PM0.49m
9:42AM0.35m
8:17PM0.41m
10:50AM0.43m
9:01PM0.34m
11:51AM0.52m
10:00PM0.26m
Low Tide
10:30AM0.02m
1:28AM0.04m
11:12AM0.06m
1:57AM0.03m
12:01PM0.11m
2:26AM0.02m
1:05PM0.17m
2:56AM0.01m
2:35PM0.23m
3:29AM-0.00m
4:35PM0.25m
4:06AM-0.02m
6:43PM0.23m
4:48AM-0.04m
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:54
5:54
5:54
5:54
<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
 mm
Temp °C
25
26
25
25
25
25
25
25
25
25
25
24
25
25
24
25
25
24
25
25
24
Feels °C
24
24
24
23
22
22
22
22
23
21
21
21
21
21
20
21
21
20
22
21
21
Swell 1
Height (m)
Direction
Period (s)
0.6
SSW
14
0.6
SSW
14
0.6
SSW
13
0.5
SSW
17
0.6
SSW
16
0.5
SSW
16
0.7
SSW
16
0.7
S
20
0.8
SSW
19
0.8
SSW
18
0.8
SSW
18
0.9
SSW
16
0.8
SSW
16
0.9
SSW
15
0.8
SSW
15
0.9
SSW
14
0.8
SSW
14
0.8
SSW
14
0.7
SSW
14
0.7
SSW
13
0.6
S
13
Energy kJ
133
123
116
168
208
146
212
377
486
418
408
457
337
402
284
350
273
250
192
187
125
Swell 2
Height (m)
Direction
Period (s)
0.3
SSW
20
0.4
SSW
19
0.5
S
18
0.5
SW
13
0.4
SW
12
0.4
SSW
12
0.6
S
21
0.6
SSW
16
0.7
SSW
15
0.6
SSW
14
0.4
SSW
14
0.3
SSW
13
0.2
SSE
9
0.2
SSE
9
0.1
SW
9
0.1
SE
8
0.1
SE
8
0.2
SSE
10
0.1
SE
9
0.1
SE
8
0.1
SE
8
Energy kJ
75
117
163
85
36
59
326
162
188
138
79
34
8
8
3
3
3
9
3
3
3
Swell 3
Height (m)
Direction
Period (s)
0.3
SSE
9
0.4
SE
9
0.2
SSE
9
0.2
S
13
0.2
S
12
0.4
SSW
22
0.2
SSW
16
0.3
SSW
11
0.2
SSW
11
0.2
SSE
11
0.3
E
9
0.2
SSE
10
0.2
SSW
13
0.1
W
10
0.1
SW
9
0.1
S
10
0.1
S
10
0.1
S
18
0.1
W
17
Energy kJ
17
20
8
13
11
164
25
23
12
11
15
10
17
2
3
2
2
6
6
Wind waves
Height (m)
Direction
Period (s)
1.6
ENE
8
1.5
ENE
8
1.6
ENE
8
1.6
ENE
8
1.6
ENE
8
1.7
ENE
8
1.6
ENE
8
1.5
ENE
8
1.7
ENE
7
1.9
ENE
7
1.6
ENE
7
1.9
ENE
7
2.1
ENE
7
2
ENE
7
2.2
ENE
7
2.1
ENE
8
2.2
ENE
8
2.2
ENE
8
2.1
ENE
8
1.8
ENE
8
2.1
ENE
8
Energy kJ
292
278
277
285
294
336
302
285
327
379
279
369
432
417
498
469
512
540
495
393
481
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
2
1
2
3
1
3
3
3
2
2
1
2
2
1
2
2
1
1
Distance (km)
31
126
31
31
39
31
31
126
31
42
39
31
39
126
39
42
126
39
39
44
32
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
2
3
3
3
3
2
2
2
2
2
2
1
1
Best forecast wave conditions in United States
Rating
(10 max)
2
2
2
2
2
3
3
2
3
3
3
3
2
2
4
2
2
4
3
1
4
Header Global
Rating
(10 max)
9
5
9
5
5
6
5
9
7
5
8
9
8
6
8
9
6
9
5
5
9
  • 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
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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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