Number Fours Surf Break

Lat Long: 21.28° N 157.83° W

Issued: 1 am 06 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) - 8ft (2.4m), 8s period, ENE swell with 620 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 2.4m 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 1.8m 7s period and expected on Saturday (Jul 11) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Mon 6th Jul)8ft (2.4m) 8s

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


Updates in  hr  min  s Forecast update imminent

Alright folks, Rusty here. Let's talk about what Number Fours has in store for us over the next couple of weeks. Straight up, it’s a bit of a grim outlook for the most part. We’re looking at a long stretch of onshore, messy conditions that won’t give you much to work with.

The water temp is sitting at 80°, which is pretty standard for this time of year.

Right from the get-go on Monday the 6th of July, it’s a tough watch. We’ve got a 7ft ENE swell wrapping in, but it's being hammered by a strong 25 mph cross-off breeze. Even though the wave faces might look clean, the wind is just ruining it. This same story plays out day after day right through the first week and into the second. The wind stays locked in from the ENE at 19-25 mph, and the swell hangs around the 6ft to 7ft mark, but it’s all short-period junk at 7 seconds. The wave energy is moderate, hitting around 852 (moderate) on Monday morning, but it’s just not surfable. This is a solid stretch of poor conditions.

We do see a bit of a change around Tuesday the 14th of July. The wind finally drops to a gentle 9 mph cross-off, and for the morning, the swell drops to 2ft from the SW with a long 14-second period. That combo earns a "very good" call, and this is our standout. For a moment, there’s some shape and possibility. But it’s a small window. The afternoon goes back to marginal, and the following days see some mixed-up, weak swell from the SW and SSE with very long periods (14-18 seconds) but small heights between 2ft and 2ft. The wave energy drops right back to weak levels, like 294 (weak) on the 16th. These long-period groundswells are tricky at Number Fours as it’s a reef setup, but when it’s that small, it’s more of a micro-session.

Don't get your hopes up for the final weekend of the forecast either. The 18th through the 20th of July sees the onshore winds and short-period ENE swell come roaring back, with energy picking back up to moderate levels but all locked into ugly conditions.

The Pick:

If you’re desperate for a paddle, keep your eye on Tuesday the 14th of July. That morning, when the wind goes light and the swell turns into a clean, long-period groundswell from the SW, you might find a few fun ones at Number Fours (reef). It’s only 2ft, so it’s a cruisy session, and you won’t be fighting the wind. For the rest of the 16 days? Honestly, it’s mostly a write-off. You're better off waiting for the next system.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Some drizzle, heaviest during Sat morning. Warm (max 26°C on Fri afternoon, min 24°C on Thu morning). Mainly fresh winds.

Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
0
1
0
0
1
0
0
0
0
0
1
1
1
0
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
ENE
7
2.2
ENE
8
2.1
ENE
7
2.2
ENE
8
2.1
ENE
8
2.2
ENE
7
2
ENE
7
1.9
ENE
7
2.1
ENE
7
1.7
ENE
7
1.7
ENE
7
1.8
ENE
7
1.8
ENE
7
1.9
ENE
7
2.1
ENE
7
2.1
ENE
7
1.8
ENE
7
0.7
SW
17
1.9
ENE
8
2
ENE
8
2.2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
489
551
456
566
481
498
417
379
456
327
294
344
353
387
444
475
352
309
432
475
512
Wind (km/h)
40
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
40
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
35
ENE
30
NE
25
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
2:52AM0.17m
Low Tide
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
10:45PM0.04m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
rain showers
part cloud
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
7:15
 mm
1
Temp °C
25
25
24
25
25
24
25
25
24
25
25
25
25
26
25
25
25
25
25
25
25
Feels °C
21
21
20
21
22
20
21
21
21
22
22
24
24
24
23
24
23
23
23
22
23
Swell 1
Height (m)
Direction
Period (s)
0.8
SSW
16
0.9
SSW
15
0.8
SSW
15
0.8
SSW
14
0.8
SSW
14
0.8
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
0.9
SW
16
Energy kJ
337
402
284
280
273
250
192
187
125
113
112
75
71
42
184
221
316
309
376
367
353
Swell 2
Height (m)
Direction
Period (s)
0.2
SSE
9
0.2
SSE
9
0.2
SSE
8
0.2
SSE
10
0.1
SE
8
0.2
SSE
10
0.1
SE
9
0.2
SSE
8
0.2
W
15
0.2
SSE
8
0.2
W
14
0.2
W
13
0.2
W
13
0.3
SW
21
0.4
S
12
0.4
W
14
0.4
S
12
0.4
W
13
0.3
S
11
0.3
SSE
12
0.3
SSE
12
Energy kJ
9
8
7
9
3
9
3
7
17
6
15
13
13
68
41
63
44
54
23
28
28
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
13
0.1
W
10
0.1
NW
9
0.1
NW
9
0.1
S
10
0.1
W
18
0.1
SE
6
0.1
S
10
0.2
S
16
0.2
SSE
6
0.2
S
15
0.2
SSW
21
0.3
W
13
0.4
W
13
0.4
S
12
0.4
W
13
0.3
S
11
0.3
W
12
0.3
W
12
0.3
W
12
Energy kJ
17
2
3
3
2
6
1
2
21
3
17
45
29
55
44
54
22
28
26
26
Wind waves
Height (m)
Direction
Period (s)
2.2
ENE
7
2.2
ENE
8
2.1
ENE
7
2.2
ENE
8
2.1
ENE
8
2.2
ENE
7
2
ENE
7
1.9
ENE
7
2.1
ENE
7
1.7
ENE
7
1.7
ENE
7
1.8
ENE
7
1.8
ENE
7
1.9
ENE
7
2.1
ENE
7
2.1
ENE
7
1.8
ENE
7
1.7
ENE
7
1.9
ENE
8
2
ENE
8
2.2
ENE
8
Energy kJ
489
551
456
566
481
498
417
379
456
327
294
344
353
387
444
475
352
297
432
475
512
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
1
2
2
1
1
2
1
2
1
1
1
2
1
2
2
2
2
3
Distance (km)
126
127
31
126
42
39
39
42
32
39
39
31
31
42
31
31
39
31
31
31
1
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
1
2
1
2
1
1
1
2
2
2
3
3
3
3
Best forecast wave conditions in United States
Rating
(10 max)
2
2
2
2
2
4
2
2
4
1
2
4
1
1
3
2
2
3
3
3
3
Header Global
Rating
(10 max)
8
7
5
5
9
8
9
9
5
6
6
5
8
6
5
5
5
9
9
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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