Number Fours surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 7 pm Saturday 27 Dec 2025 HST
Forecast update in hr  min  s Forecast update imminent
Number Fours surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Number Fours sea temperature is
25.6° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Number Fours this week:

The surf forecast for Number Fours over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 28) at 2AM. The primary swell is predicted to be 1.0m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Number Fours in the next 12 days are 2.4m 8s and forecast to arrive on Friday (Jan 02) at 8PM. 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 15s period and expected on Wednesday (Dec 31) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 28th Dec)3.5ft (1.0m) 7s
Best Surf 2AM (Sun 28th Dec)3.5ft (1.0m) 7s
Most Powerful 8PM (Fri 2nd Jan)8ft (2.4m) 8s

Table - best surf conditions forecast for Number Fours over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 25°C on Mon afternoon, min 22°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the ENE by Tue afternoon).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Thu afternoon. Warm (max 24°C on Wed morning, min 23°C on Tue night). Winds increasing (light winds from the ENE on Wed night, strong winds from the ENE by Fri afternoon).

Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Sat
03
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
1
0
1
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1
E
0.8
E
0.8
E
0.8
E
0.7
E
0.8
E
1
E
0.9
E
1.2
E
1.3
ENE
1.2
E
1.3
E
1.6
E
1.6
E
1.5
E
1.4
E
1.9
ENE
2.2
ENE
2.1
ENE
1.6
ENE
1.6
ENE
Period(s) (?)777777778888899678888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)10062615645669279195229205245356395372166376589520314302
Wind
(km/h)
5
NW
5
ESE
5
SE
15
ENE
10
ENE
20
ENE
15
ENE
25
E
30
ENE
30
ENE
30
ENE
30
ENE
15
ENE
30
ENE
35
ENE
35
ENE
40
ENE
40
ENE
35
ENE
40
ENE
40
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
glasscross-
on
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
/ height (m)
11:32PM
0.46
9:49AM
0.35
12:26AM
0.56
10:53AM
0.28
1:16AM
0.65
12:04PM
0.22
2:04AM
0.73
1:13PM
0.18
2:49AM
0.79
2:21PM
0.17
3:34AM
0.82
3:19PM
0.17
4:18AM
0.83
4:13PM
0.19
Low Tide
/ height (m)
5:21AM
0.26
4:48PM
-0.02
7:14AM
0.22
5:28PM
-0.05
8:37AM
0.16
6:12PM
-0.07
9:37AM
0.11
6:58PM
-0.08
10:25AM
0.06
7:47PM
-0.09
11:07AM
0.04
8:37PM
-0.09
11:47AM
0.02
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Sat
03
Sunrise-7:07--7:07--7:07--7:07--7:07--7:09--7:09-
Sunset--5:58--5:58--5:59--6:00--6:00--6:00--6:01
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
rain showers
part cloud
rain showers
cloud
part cloud
part cloud
part cloud
Rain (mm)
--------------1-1----
Temp. °C232324242425242424232424232424232323232323
Feels °C (?)252526262425232321202021212020191918181718
  • 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

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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 12 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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