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Surf Forecasts:

Number Fours surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 7 pm Monday 02 Feb 2026 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
25.0° 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 Tuesday (Feb 03) at 8AM. The primary swell is predicted to be 0.4m and 14s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Number Fours in the next 12 days are 1.7m 9s and forecast to arrive on Tuesday (Feb 10) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 15s period and expected on Tuesday (Feb 03) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Tue 3rd Feb)1.5ft (0.4m) 14s
Best Surf 8AM (Tue 3rd Feb)1.5ft (0.4m) 14s
Most Powerful 2AM (Tue 10th Feb)5.5ft (1.7m) 9s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 5mm), mostly falling on Mon night. Warm (max 24°C on Mon night, min 21°C on Mon night). Winds decreasing (strong winds from the WSW on Mon night, calm by Thu morning).

Days 3-6 Weather Summary Heavy rain (total 53mm), heaviest during Sun afternoon. Warm (max 24°C on Thu night, min 20°C on Sun morning). Winds increasing (light winds from the NNW on Fri night, strong winds from the NE by Sun afternoon).

Tuesday
03
Wednesday
04
Thursday
05
Friday
06
Saturday
07
Sunday
08
Mon
09
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.2
SSW
0.2
SSW
0.2
SSW
2
NNW
0.2
WSW
0.3
SW
0.3
ESE
0.2
SSE
0.2
SSW
0.2
SSW
0.3
SSW
0.6
S
0.3
SSW
1.1
NW
0.9
WNW
1.6
NE
1.4
ENE
1
ENE
1
SSE
1.1
E
1.6
E
Period(s) (?)121414151113871716154141514787778
Wave
Graph
(?)Metric surfscale
Energy kJ (?)142121012271352725431437000213117105124364
Wind
(km/h)
15
NW
5
NNW
10
N
15
NNE
20
E
10
ESE
5
SSE
10
SW
20
SW
10
SSW
15
SSW
15
SW
10
NNE
25
NE
30
NE
35
NE
40
ENE
40
ENE
40
ENE
40
ENE
40
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		offoffcrosscross-
on		cross-
on		cross-
on		cross-
on		ononcross-
on		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
5:09AM
0.66
5:39PM
0.33
5:41AM
0.58
6:27PM
0.36
6:10AM
0.50
7:18PM
0.39
6:37AM
0.42
8:16PM
0.41
7:01AM
0.34
9:23PM
0.43
7:16AM
0.27
10:39PM
0.46
Low Tide
/ height (m)
10:14PM
-0.00
12:02PM
-0.00
11:02PM
0.05
12:29PM
0.00
11:51PM
0.10
12:55PM
0.01
12:48AM
0.16
1:22PM
0.02
2:02AM
0.22
1:49PM
0.04
4:03AM
0.24
2:23PM
0.05
3:08PM
0.06
Tuesday
03
Wednesday
04
Thursday
05
Friday
06
Saturday
07
Sunday
08
Mon
09
Sunrise-7:07--7:07--7:07--7:05--7:05--7:05--7:05-
Sunset--6:22--6:22--6:22--6:23--6:23--6:24--6:25
rain showers
clear
clear
clear
clear
clear
clear
rain showers
rain showers
rain showers
rain showers
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
heavy rain
mod rain
light rain
light rain
Rain (mm)
3------1113371241418633
Temp. °C242323212223222324242324232222222120212022
Feels °C (?)202322192021232423252323232220201614151417
  • 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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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.

View detailed surf forecast for Number Fours at:
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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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