Number Fours Surf Break

Lat Long: 21.28° N 157.83° W

Number Fours Surf Forecast and Surf Report

Issued: 1 am 07 Jul 2026 (local time)

Forecast update in  hr  min

Today's Number Fours sea temperature is
26.5° C
0.5° 

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 7 Jul 2026:

  • Most powerful swell: Tuesday 7 Jul, 11AM (local time) - 8ft (2.4m), 8s period, ENE swell with 679 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 Tuesday (Jul 07) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 18s period and expected on Tuesday (Jul 14) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Tue 7th Jul)8ft (2.4m) 8s

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


Alright folks, Rusty here. Let’s break it down for Number Fours. It’s a reef break that’s fairly consistent, exposed to the swell, and it prefers a SSE direction. The first week and a half is a real struggle. The water temp is sitting at 80°, which is par for the course this time of year.

We’ve got a long dry spell kicking off. From Tuesday the 7th through Monday the 14th, the surf is just poor. The wind is howling out of the ENE at 18 to 25 mph, a cross-off that’s ruining the shape. Swell is mostly 5 to 7 feet from the ENE, but with a short, choppy 7 to 8 second period. The combined energy is moderate (963 down to 548), but it doesn’t matter because the quality is terrible. It’s called “poor surf conditions” and marginal at best. It’s big enough to be a challenge, but the wind and short period make it a real battle. This stretch looks more interesting for kite surfing than paddle surfing.

There’s a tiny blip on Wednesday the 15th afternoon and Thursday the 16th afternoon, where the swell direction flips to SSW with a long period of 17 to 18 seconds. But the height drops to 2 feet, so you’re barely getting a wave. The energy is still moderate (589 and 501), but it’s a tease.

The real gap runs from the 7th all the way to the 19th of July. That’s 12 days of barely rideable or flat conditions. But the end of the window has some hope.

The standout is shaping up for Sunday the 19th and Monday the 20th. The swell builds to 8 to 8 feet from the ENE with an 8-second period. The combined energy jumps into the strong range (1063 to 1118). The wind is still a fresh ENE breeze, 18 to 22 mph, staying cross-off which will keep the faces clean. It’s still short-period, but at that size and energy, Number Fours will have some real grunt. At 8 feet, this is expert-only territory. For those with the skills, it’s the only true highlight of the whole outlook. It’s a long way out, so keep the expectations tempered.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

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

Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
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
0
0
0
0
0
0
0
0
1
0
0
0
1
1
1
1
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)
2.4
ENE
8
2
ENE
8
2.3
ENE
8
2
ENE
7
2.2
ENE
7
2.2
ENE
7
2.1
ENE
8
1.8
ENE
8
1.8
ENE
7
2.2
ENE
7
2.1
ENE
8
2
ENE
7
2
ENE
7
1.9
ENE
7
1.9
ENE
7
2.2
ENE
7
1.9
ENE
8
2.2
ENE
8
1.9
ENE
8
1.7
ENE
8
1.6
ENE
7
Wave Graph
Metric surfscale
Energy kJ
679
471
588
428
542
526
481
373
353
516
469
405
405
376
369
485
408
555
422
339
280
Wind (km/h)
40
ENE
35
ENE
40
ENE
40
ENE
40
ENE
35
ENE
40
ENE
40
ENE
35
ENE
40
ENE
35
ENE
35
ENE
40
ENE
35
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
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
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
3:56PM0.82m
3:49AM0.19m
Low Tide
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
8:13AM-0.09m
11:23PM0.02m
part cloud
clear
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
rain showers
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:54
5:56
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
7:15
7:15
 mm
1
Temp °C
25
25
24
25
25
24
25
25
25
25
25
25
25
25
25
25
26
25
25
25
25
Feels °C
21
21
20
22
21
21
22
21
23
24
22
24
23
22
23
23
24
23
22
22
23
  • 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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