Number Fours Surf Break

Lat Long: 21.28° N 157.83° W

Number Fours Surf Forecast and Surf Report

Issued: 7 pm 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Number Fours sea temperature is
27.4°C
0.6° 

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 25 Aug 2026:

  • Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.1m), 17s period, S swell with 716 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 1.1m 17s and forecast to arrive on Thursday (Aug 27) 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 1.5m 6s period and expected on Wednesday (Aug 26) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Thu 27th Aug)3.5ft (1.1m) 17s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what Number Fours is cooking up for us. It’s a reef setup that works best with a solid SSE direction, but for the next couple of weeks we’re mostly dealing with a long stretch of cross-off ENE winds and some pretty average conditions.

Right out of the gate, Tuesday the 25th through into the first week is a bit of a struggle. The wind is hangin’ in strong from the ENE, creating cross-off conditions and keeping things clean but the swell is coming from the wrong direction – ENE – with a short, weak period around 7 seconds. The swell hangs around the 5 feet mark, but with that period, it’s just not doing the reef any favours. You’re lookin’ at a combined energy in the moderate range (568–673). Wednesday the 26th afternoon into Thursday the 27th morning is the only blip where we get a whisper of S swell (4 ft at 17 seconds), but it’s still marginal thanks to the wind. Most days are scoring a 0 or 1 – honestly, it’s a tough stretch with not much to get excited about.

We hit a bit of a lull Friday the 28th and Saturday the 29th before things get a little bigger. By Monday the 1st of September, the ENE swell bumps up to 7 ft with a combined energy that jumps into the strong range (1006), but the period is still short (8 seconds) and the wind is cross-off fresh breeze. This is getting into expert territory size-wise for a short-period wave, so it’s gonna be a handful and not super user-friendly.

The real standout, though, is the morning of Wednesday the 9th of September. We finally see a shift: the wind drops to a gentle cross-off from the NNE, and we get a pulse of long-period S swell (2 ft at a very long 19 seconds) and the combined energy is moderate (490). It’s a small day, but that long period groundswell is pure quality – it will wrap into the reef perfectly with clean conditions, glassy potential. For a spot like Number Fours that likes a good S groundswell, this is the pick of the bunch. It’s late in the forecast, so it’s promising but you’ll want to keep an eye on it.

So, overall, there’s a big gap of mediocrity from now through to early September, then a few days of bigger, messier ENE swell, and then that one clean, small, long-period S swell morning. If you’re only paddling out once, make it that morning of the 9th.

Rusty, signing off.

Short Range Forecast

Mostly dry. Warm (max 26°C on Mon night, min 25°C on Mon night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 26°C on Fri morning, min 25°C on Thu night). Mainly fresh winds.

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
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
1
1
1
1
1
1
1
0
1
1
0
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)
1.4
ENE
7
1.8
ENE
7
1.6
ENE
7
1.6
E
7
0.7
SSW
14
0.7
S
18
0.7
S
19
1.1
S
17
0.9
S
16
1
S
16
0.8
S
14
0.9
S
14
1.6
ENE
7
1.7
ENE
7
1.7
ENE
7
1.6
ENE
7
1.5
ENE
7
1.8
ENE
7
1.8
ENE
7
Wave Graph
Metric surfscale
Energy kJ
214
308
261
236
225
307
351
716
427
482
260
329
225
240
247
230
210
282
298
Wind (km/h)
30
ENE
40
ENE
35
ENE
30
ENE
35
ENE
35
ENE
25
NE
30
ENE
35
ENE
30
ENE
35
ENE
35
ENE
35
ENE
40
ENE
35
ENE
30
ENE
30
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
High Tide
2:21AM0.29m
2:56PM0.68m
2:55AM0.33m
3:24PM0.68m
3:31AM0.37m
3:53PM0.66m
4:08AM0.41m
4:20PM0.62m
4:47AM0.46m
4:49PM0.57m
5:30AM0.50m
5:18PM0.51m
Low Tide
9:35PM0.13m
7:43AM0.06m
9:53PM0.11m
8:24AM0.05m
10:12PM0.10m
9:05AM0.06m
10:32PM0.08m
9:46AM0.07m
10:54PM0.07m
10:31AM0.10m
11:17PM0.05m
11:22AM0.14m
11:42PM0.05m
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:13
6:13
6:13
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:52
6:52
6:52
6:51
6:50
6:49
 mm
Temp °C
26
26
26
26
26
26
25
26
26
25
26
26
25
26
26
25
26
26
25
Feels °C
26
24
23
24
22
23
22
24
23
23
23
23
22
23
22
22
24
24
22
  • 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
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Number Fours:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Number Fours surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest