Number Fours Surf Break

Lat Long: 21.28° N 157.83° W

Issued: 7 am 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Number Fours sea temperature is
26.4° 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 3 Jul 2026:

  • Most powerful swell: Wednesday 8 Jul, 2AM (local time) - 8ft (2.4m), 8s period, ENE swell with 655 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 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 Friday (Jul 03) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Wed 8th 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, Rusty here, let's get into it.

We're looking at a 16-day window, but honestly, it's a quiet one. The first few days have some swell but the wind is a problem, and the call outs are all pretty poor. There's no real stand-out session in the near term. The only break we've got intel on is Number Fours, a reef setup that needs a solid SSE swell to really light up.

The water temp is sitting right on 80°, which is pretty much spot on average for this time of year, nothing unusual there.

Friday July 3rd kicks off with a bit of swell at 5 ft from the ENE, but it's short period at 8 seconds and that wind is a stiff 16 mph cross-off. It's clean, but the energy is only moderate (514). Not worth getting excited about. The afternoon is more of the same, just a touch more wind.

Saturday July 4th morning has a bump to 6 ft, but it's still short-period and that wind is up to 19 mph. The combined energy is moderate (899), but the conditions are just not there. The afternoon sees a shift to a tiny 2 ft S swell with a very long 20-second period, but the wind is still ruining any chance of it being clean.

After that, from Sunday July 5th right through to Thursday July 9th, it's just poor conditions. Winds are consistently strong, in the 22-25 mph range. There's a window on Monday July 6th where the swell hits 7 ft, but with a 7-8 second period and that howling wind, it's a messy, blown-out mess. For a reef break like Number Fours, that's just not going to be fun.

The second week doesn't offer much hope. From Friday July 10th to Saturday July 18th, the forecast is a long stretch of marginal to poor surf. There's a bit of a tease on Monday July 13th and Tuesday July 14th with some waist-high 3 ft SW swell with a long 15-16 second period, and the wind drops to a more manageable 12 mph. The combined energy is still low (358-236), so it's weak and a long time between sets. It'll be clean but very lacking in power.

If you're desperate for a paddle, Wednesday July 15th afternoon shows a bit of a bump in energy as a short-period 5 ft ENE swell comes in, but it's still marginal. The best-looking day for size is Thursday July 16th, with 7 ft ENE swell showing up, and the wind is finally light enough at 12-16 mph to keep it reasonably clean. The energy is moderate (697). That's probably the pick of a very ordinary bunch, but with that short period (7 secs), it'll be lumpy and won't have the power of a proper groundswell.

All in all, we're looking at a lot of days of nothing special. The forecasters are calling it all pretty poor, so don't hold your breath. It's one of those stretches where you'd be better off keeping the board in the car and only checking it if the wind changes.

Stay patient.
Rusty

Short Range Forecast

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

Days 4-6 Weather Summary

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

Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
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
0
0
0
0
0
1
0
0
0
1
1
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)
1.5
ENE
8
1.5
ENE
8
1.6
ENE
8
1.7
ENE
8
0.7
S
20
0.8
SSW
19
0.8
SSW
18
0.8
SSW
18
2.1
ENE
7
2
ENE
7
2.2
ENE
8
2.2
ENE
7
2
ENE
8
2.2
ENE
8
2.4
ENE
8
2
ENE
7
1.9
ENE
7
2
ENE
7
1.9
ENE
7
1.8
ENE
7
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
253
271
310
336
377
486
418
408
475
417
551
498
459
557
655
426
379
428
369
344
286
Wind (km/h)
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
40
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
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
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
12:45PM0.61m
11:18PM0.20m
Low Tide
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
8:17PM0.17m
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:54
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
24
25
25
24
25
25
24
25
25
24
25
25
24
25
25
25
Feels °C
24
24
23
22
22
21
22
22
20
21
21
20
21
21
20
21
21
21
23
22
23
Swell 1
Height (m)
Direction
Period (s)
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
0.8
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
Energy kJ
168
208
146
212
377
486
418
408
371
337
402
284
280
269
195
192
187
125
113
112
75
Swell 2
Height (m)
Direction
Period (s)
0.5
SW
13
0.4
SSW
12
0.4
SSW
12
0.6
S
21
0.6
SSW
16
0.4
SSW
14
0.6
SSW
14
0.4
SW
14
0.3
SSW
13
0.2
SSE
9
0.2
SSE
9
0.2
SSE
9
0.1
SE
8
0.1
SE
8
0.1
SE
10
0.2
SSE
9
0.3
SSE
8
0.2
SSE
8
0.2
SSE
8
0.3
SSE
8
0.3
W
14
Energy kJ
85
60
59
326
162
69
138
51
34
8
8
8
3
3
4
7
12
7
6
11
34
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
9
0.2
S
12
0.4
SSW
22
0.2
SSW
16
0.3
SSW
11
0.4
SW
15
0.2
SSE
11
0.2
SSW
11
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
W
18
0.1
S
18
0.1
W
17
0.2
W
15
0.3
W
15
0.2
S
15
Energy kJ
8
11
164
25
23
54
11
11
9
17
2
3
2
2
6
6
6
18
39
17
Wind waves
Height (m)
Direction
Period (s)
1.5
ENE
8
1.5
ENE
8
1.6
ENE
8
1.7
ENE
8
1.6
ENE
8
1.8
ENE
7
1.7
ENE
7
2
ENE
7
2.1
ENE
7
2
ENE
7
2.2
ENE
8
2.2
ENE
7
2
ENE
8
2.2
ENE
8
2.4
ENE
8
2
ENE
7
1.9
ENE
7
2
ENE
7
1.9
ENE
7
1.8
ENE
7
1.7
ENE
7
Energy kJ
253
271
310
336
310
353
327
389
475
417
551
498
459
557
655
426
379
428
369
344
286
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
3
2
3
3
3
2
1
1
2
2
2
2
2
1
1
1
1
1
Distance (km)
31
42
31
31
39
31
39
44
39
126
127
31
42
46
39
39
42
31
32
39
31
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
3
3
3
3
3
2
2
2
2
2
2
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
2
3
3
3
4
3
3
3
2
2
4
2
2
4
3
2
4
1
2
3
Header Global
Rating
(10 max)
7
5
6
5
9
7
5
6
8
7
4
5
9
8
9
6
5
5
8
5
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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