Number Fours Surf Break

Lat Long: 21.28° N 157.83° W

Number Fours Surf Forecast and Surf Report

Issued: 1 pm 07 Jul 2026 (local time)

Forecast update in  hr  min

Today's Number Fours sea temperature is
26.5° C
0.5° 

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 8 Jul 2026:

  • Most powerful swell: Wednesday 8 Jul, 8PM (local time) - 7.5ft (2.3m), 8s period, ENE swell with 604 kJ wave energy.

Best Forecast Surf Conditions for Number Fours this week:

The most powerful waves expected at Number Fours in the next 16 days are 2.3m 8s and forecast to arrive on Wednesday (Jul 08) 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 1.7m 8s period and expected on Tuesday (Jul 14) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Wed 8th Jul)7.5ft (2.3m) 8s

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


G’day crew, Rusty here. It’s a bit of a frustrating run coming up over the next couple of weeks at Number Fours. There’s some energy in the water, but the wind just won’t play ball for most of it, and the conditions stay pretty average. Let’s break it down.

We’ve got a long, quiet start. The first proper recommendation doesn’t pop up until Saturday the 11th of July, and even then it’s only a marginal call. So there’s about a four-day gap with nothing worth paddling out for right from now.

From Tuesday the 7th of July through to the end of the first week, the onshore ENE wind is pumping at 19 to 25 mph, making a mess of things. Swell hangs around 6 ft to 7 ft from the ENE, with a short, crumbly period of 7 to 8 seconds. The combined wave energy is moderate to strong (values between 461 and 871), but with that stiff cross-off wind, the surf is just poor. A couple of afternoons on the 11th and 12th tick up to a ‘marginal’ rating, but you’d be scraping for anything rideable.

The second week doesn’t start much kinder. From Monday the 13th through to the end of the week, the wind eases a touch to 19 mph, but it’s still cross-off from the ENE. Swell stays in that 6 ft to 7 ft range, short-period, and it’s all marginal at best with a score of just 1 or 2 out of 10. Water temp is sitting at 80°F, about average for this time of year with a 0.9°F anomaly – so no surprises there.

Now, there is a glimmer. Look ahead to Tuesday the 21st of July. We get a proper long-period groundswell arriving – 4 ft to 4 ft from the east with a very long period of 16 seconds. The energy jumps right up to 1284 to 1359, strong stuff for the size. But here’s the kicker: this kind of long-period swell can be tricky at a reef setup like Number Fours, with sets breaking a bit too straight. The wind is still cross-off from the ENE at 16 mph, so it won’t be glassy, but that moderate breeze keeps it just about rideable. It’s marginal, but this is the standout of the whole outlook. Expect clean waves, but with that wind direction, it’s going to be a bit lumpy on the face. Crowds are possible, so don’t expect it all to yourself.

Wednesday the 22nd of July sees the swell drop a touch to 3 ft from the east, period still long at 15 seconds. The wind switches light – early on a gentle ESE cross-shore at 9 mph, and by the afternoon a light S onshore at only 3 mph, almost glassy. That afternoon could be the cleanest session of the whole run, but the energy is fading, dropping to 849. Still, for a quiet, smooth wave with that long-period groundswell, it’s worth a look if you’re free.

Overall, it’s a long, windy wait for a few days of borderline surf. The best bet is that Tuesday and Wednesday around the 21st and 22nd of July, when the long-period east swell offers some real quality, even if it’s not perfect. Don’t hold your breath for the rest of it.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Wed night. Warm (max 25°C on Tue afternoon, min 24°C on Tue night). Mainly strong winds.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Fri night. Warm (max 25°C on Fri afternoon, min 24°C on Fri night). Mainly strong winds.

Tue
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
1
1
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
ENE
8
2.2
ENE
7
2.2
ENE
7
2.2
ENE
7
2.2
ENE
8
1.8
ENE
8
1.7
ENE
8
1.9
ENE
7
1.8
ENE
7
1.9
ENE
7
2.3
ENE
7
2.2
ENE
7
2
ENE
7
2.1
ENE
7
2.2
ENE
7
2
ENE
8
2.2
ENE
8
1.8
ENE
8
1.8
ENE
8
1.7
ENE
7
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
501
526
512
498
557
393
345
390
353
390
572
516
405
456
472
452
559
393
393
319
310
Wind (km/h)
40
ENE
35
ENE
40
ENE
40
ENE
35
ENE
35
ENE
40
ENE
35
ENE
40
ENE
40
ENE
40
ENE
35
ENE
35
NE
30
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
25
ENE
30
ENE
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-off
cross-off
cross-off
cross-off
cross-off
High Tide
9:01PM0.34m
11:51AM0.52m
10:00PM0.26m
12:45PM0.61m
11:18PM0.20m
1:36PM0.69m
00:40AM0.17m
2:24PM0.76m
1:50AM0.16m
3:11PM0.80m
2:52AM0.17m
3:56PM0.82m
3:49AM0.19m
Low Tide
4:35PM0.25m
4:06AM-0.02m
6:43PM0.23m
4:48AM-0.04m
8:17PM0.17m
5:36AM-0.06m
9:18PM0.12m
6:28AM-0.08m
10:04PM0.07m
7:21AM-0.09m
10:45PM0.04m
8:13AM-0.09m
11:23PM0.02m
9:06AM-0.08m
clear
clear
clear
clear
rain showers
clear
part cloud
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:56
5:56
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:16
7:16
7:16
7:16
7:16
7:15
7:15
7:15
 mm
1
2
Temp °C
25
24
25
25
24
25
25
24
25
25
24
25
25
24
25
25
25
25
25
24
25
Feels °C
21
20
21
21
20
22
22
22
23
22
22
22
22
21
23
22
22
22
22
21
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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