Surf Break

Lat Long: 21.28° N 157.83° W

Number Fours Surf Forecast and Surf Report

Issued: 7 pm 25 Sep 2026 (local time)

Forecast update in  hr  min

Today's Number Fours sea temperature is
27.5°C
0.4° 

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 26 Sep 2026:

  • Best quality surf: Wednesday 30 Sep, 8AM (local time) - 2.5ft (0.8m), 14s period, E swell with cross-offshore winds.
  • Most powerful swell: Sunday 27 Sep, 2AM (local time) - 15ft (4.5m), 10s period, E swell with 3,966 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 30 Sep, 8AM (local time) - 2.5ft (0.8m), 14s period with E 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 Wednesday (Sep 30) at 8AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 1.3m 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 Sunday (Sep 27) 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 0.6m 9s period and expected on Wednesday (Sep 30) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Wed 30th Sep)2.5ft (0.8m) 14s
Best Surf 8AM (Wed 30th Sep)2.5ft (0.8m) 14s
Most Powerful 2AM (Sun 27th 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 27°C on Mon morning, min 24°C on Sat night). Winds decreasing (near gales from the ENE on Sat night, moderate winds from the ENE by Mon morning).

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Tue night. Warm (max 27°C on Tue morning, min 25°C on Mon night). Mainly fresh winds.

Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wednesday
30
Thursday
1
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
1
2
1
2
2
2
1
2
0
1
0
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)
3.5
E
9
3.5
E
9
4
ENE
9
4.5
E
10
3.5
ENE
10
3
ENE
9
3
E
9
2.2
ENE
8
2.1
ENE
8
1.9
ENE
8
1.7
ENE
8
1.6
ENE
8
0.8
SSW
16
0.8
E
14
1.1
ENE
8
1.2
ENE
8
1.1
ENE
8
1.1
ENE
8
0.9
ENE
8
Wave Graph
Metric surfscale
Energy kJ
1573
2136
2562
3966
2458
1676
1315
645
589
460
370
326
318
253
167
178
151
147
102
Wind (km/h)
50
ENE
55
ENE
55
ENE
55
ENE
50
E
45
ENE
40
ENE
30
ENE
30
ENE
15
ENE
15
E
20
NE
10
SE
20
ENE
30
ENE
25
ENE
25
ENE
25
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
cross-off
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
3:46AM0.55m
3:42PM0.52m
4:25AM0.60m
4:13PM0.45m
5:08AM0.64m
4:47PM0.39m
5:56AM0.67m
5:22PM0.32m
6:52AM0.68m
6:03PM0.26m
7:58AM0.67m
7:08PM0.20m
Low Tide
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
2:19PM0.20m
11:54PM0.05m
4:19PM0.18m
00:41AM0.08m
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
thunderstorm
part cloud
clear
part cloud
cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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6:20
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6:20
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6:20
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6:20
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6:22
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6:22
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:23
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6:22
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6:22
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6:22
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6:21
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6:20
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6:19
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 mm
—
—
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—
—
—
—
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—
—
—
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2
—
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—
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Temp °C
26
26
25
25
26
26
25
27
27
26
27
27
26
26
27
25
25
26
25
Feels °C
21
20
18
18
20
20
20
26
25
26
29
28
27
28
27
23
23
24
24
  • 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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