Number Fours Surf Break

Lat Long: 21.28° N 157.83° W

Number Fours Surf Forecast and Surf Report

Issued: 7 pm 23 Sep 2026 (local time)

Forecast update in  hr  min

Today's Number Fours sea temperature is
27.6°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 24 Sep 2026:

  • Best quality surf: Tuesday 29 Sep, 11PM (local time) - 2.5ft (0.8m), 16s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 26 Sep, 11PM (local time) - 15ft (4.5m), 10s period, ENE swell with 3,756 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 29 Sep, 11PM (local time) - 2.5ft (0.8m), 16s period with SSW swell.

Best Forecast Surf Conditions for Number Fours this week:

The surf forecast for Number Fours over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 29) at 11PM. The primary swell is predicted to be 0.8m and 16s period with a secondary swell of 1.6m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Number Fours in the next 16 days are 4.5m 10s and forecast to arrive on Saturday (Sep 26) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 10s period and expected on Thursday (Sep 24) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Tue 29th Sep)2.5ft (0.8m) 16s
Best Surf11PM (Tue 29th Sep)2.5ft (0.8m) 16s
Most Powerful11PM (Sat 26th Sep)15ft (4.5m) 10s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Wed night, min 25°C on Thu night). Winds increasing (fresh winds from the NE on Wed night, near gales from the ENE by Sat morning).

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Mon afternoon, min 25°C on Sat night). Winds decreasing (near gales from the ENE on Sat night, light winds from the ESE by Tue afternoon).

Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
1
1
0
0
0
0
0
0
1
1
0
1
2
1
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)
1.8
E
9
2.3
E
8
2.4
E
8
2.5
E
8
3
ENE
8
3
E
8
3.5
E
9
4
E
9
4.5
E
10
4.5
ENE
10
4
ENE
9
3.5
ENE
9
3
E
9
2
E
8
1.8
ENE
8
1.7
ENE
8
1.6
ENE
8
1.6
ENE
8
1.6
ENE
8
Wave Graph
Metric surfscale
Energy kJ
517
625
698
826
1055
1451
2182
2762
3303
3561
2557
1704
1405
562
448
370
330
326
318
Wind (km/h)
30
ENE
40
ENE
40
ENE
40
ENE
45
ENE
45
ENE
45
ENE
55
ENE
55
ENE
55
ENE
50
ENE
45
ENE
35
E
35
ENE
30
ENE
25
E
25
E
15
ESE
10
SE
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
cross-on
cross-on
High Tide
2:36AM0.43m
2:42PM0.60m
3:10AM0.49m
3:11PM0.56m
3:46AM0.55m
3:42PM0.52m
4:25AM0.60m
4:13PM0.45m
5:08AM0.64m
4:47PM0.39m
5:56AM0.67m
5:22PM0.32m
Low Tide
8:51PM0.09m
8:17AM0.10m
9:09PM0.07m
9:02AM0.10m
9:30PM0.05m
9:50AM0.11m
9:53PM0.03m
10:41AM0.13m
10:18PM0.02m
11:39AM0.15m
10:46PM0.02m
12:48PM0.18m
11:17PM0.03m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:20
6:20
6:20
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:25
6:24
6:23
6:22
6:22
6:22
6:21
 mm
Temp °C
26
26
26
25
26
26
25
25
26
25
26
26
25
26
27
26
27
27
26
Feels °C
24
23
23
22
21
22
20
19
20
19
20
20
20
23
26
26
27
28
27
  • 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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