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Surf Forecasts:

Number Fours surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 am Thursday 08 Jan 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
25.2° 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 Thursday (Jan 08) at 11AM. The primary swell is predicted to be 0.7m and 8s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Number Fours in the next 12 days are 2.5m 7s and forecast to arrive on Thursday (Jan 15) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 8s period and expected on Thursday (Jan 15) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Thu 8th Jan)2.5ft (0.7m) 8s
Best Surf11AM (Thu 8th Jan)2.5ft (0.7m) 8s
Most Powerful 2AM (Thu 15th Jan)8ft (2.5m) 7s

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 Mostly dry. Warm (max 25°C on Thu afternoon, min 22°C on Fri morning). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sun night. Warm (max 24°C on Sun morning, min 21°C on Mon afternoon). Winds increasing (calm on Sun morning, fresh winds from the N by Mon morning).

Thursday
08
Friday
09
Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
1
0
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.7
E
0.7
E
0.6
E
0.6
E
0.6
E
0.6
E
0.7
E
0.7
E
0.7
E
0.6
E
0.5
E
0.4
S
0.4
E
0.4
ESE
0.4
E
0.3
E
0.4
E
0.5
E
1.8
S
2.2
S
2.5
SW
Period(s) (?)8888888888810888885677
Wave
Graph
(?)Metric surfscale
Energy kJ (?)545546494747636363463232202120112012214447671
Wind
(km/h)
0
S
0
WNW
5
NNE
5
E
0
S
5
NE
5
SE
5
SSW
5
E
5
S
10
SW
15
WSW
35
N
30
NNE
30
NNE
30
NE
30
ENE
5
SE
20
S
35
SSW
30
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassglassoffglassglasscross-
off		glassglassglassoncross-
on		crossoffoffcross-
off		cross-
off		cross-
off		cross-
on		ononcross
High Tide
/ height (m)
9:27PM
0.35
8:02AM
0.42
10:40PM
0.41
8:35AM
0.34
11:44PM
0.47
9:15AM
0.27
12:36AM
0.52
10:28AM
0.21
1:21AM
0.57
12:00PM
0.18
2:00AM
0.62
1:08PM
0.17
2:36AM
0.66
Low Tide
/ height (m)
2:44PM
0.02
2:17AM
0.24
3:17PM
0.03
4:16AM
0.27
3:51PM
0.04
6:49AM
0.26
4:28PM
0.04
8:40AM
0.21
5:09PM
0.03
9:24AM
0.16
5:53PM
0.02
9:52AM
0.13
6:38PM
0.01
Thursday
08
Friday
09
Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Sunrise7:09--7:09--7:09--7:11--7:11--7:11--7:11--
Sunset-6:05--6:06--6:06--6:07--6:07--6:07--6:08-
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
rain showers
rain showers
clear
clear
clear
clear
part cloud
rain showers
thunderstorm
thunderstorm
Rain (mm)
-----------11-----1311
Temp. °C242524242424242424242424222221212222232423
Feels °C (?)262726262627262627262526211716171819222019
  • 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:
surf-forecast.com

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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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