Number Threes Surf Break

Lat Long: 21.28° N 157.83° W

Number Threes Surf Forecast and Surf Report

Issued: 7 am 21 Jul 2026 (local time)

Forecast update in  hr  min

Today's Number Threes sea temperature is
26.6° C
0.3° 

Number Threes surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Number Threes surf forecast from 21 Jul 2026:

  • Best quality surf: Tuesday 28 Jul, 8AM (local time) - 6ft (1.8m), 13s period, E swell with cross-offshore winds.
  • Most powerful swell: Monday 27 Jul, 2PM (local time) - 6ft (1.8m), 14s period, E swell with 1,321 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 28 Jul, 8AM (local time) - 6ft (1.8m), 13s period with E swell.

Best Forecast Surf Conditions for Number Threes this week:

The surf forecast for Number Threes over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 8AM. The primary swell is predicted to be 1.8m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Number Threes in the next 16 days are 1.8m 14s and forecast to arrive on Monday (Jul 27) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 8s period and expected on Saturday (Jul 25) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Tue 28th Jul)6ft (1.8m) 13s
Best Surf 8AM (Tue 28th Jul)6ft (1.8m) 13s
Most Powerful 2PM (Mon 27th Jul)6ft (1.8m) 14s

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


The Lowdown

Right, let’s have a proper look at what Number Threes (reef) has cooking over the next couple of weeks. It’s a consistent spot, advanced only, and it’s exposed to the swell – so when it’s on, it’s on. Water temp’s sitting around 80°, which is pretty much bang on average for this time of year, so no nasty surprises there.

The first few days ain’t worth paddling out for. Tuesday the 21st through to Thursday the 24th are a write-off – weak swell, messy conditions, and that cross-off wind stays stubborn. The combined wave energy’s barely getting going (around 537 to 1004), and the swell’s either too small or coming from the wrong direction. Honestly, it’s a frustrating start.

Then Friday the 24th afternoon things start to change. The swell jumps to 6 ft from the ENE, but with a short period of only 7 seconds – it’s a bit junky. The following Saturday morning the 25th sees similar, 7 ft from the ENE, period still short (8 secs). The energy’s building though, hitting 1146, but the wind’s still cross-off and fresh. It’s trying, but not clean enough to get excited about.

Sunday the 26th and Monday the 27th keep the swell going, 4 ft to 6 ft from the E and ENE, periods between 14 and 16 seconds – that’s proper groundswell. But again, that persistent cross-off wind, moderate to fresh, is just stopping it from being special. The energy’s high, 1294 to 1554, so there’s plenty of push, but the quality’s lacking.

Now, Tuesday morning the 28th – that’s your standout. The swell’s a solid 6 ft from the E with a period of 13 seconds, and the wind drops right back to a light breeze out of the NE, keeping it cross-off and clean. The combined energy is a meaty 1281 – strong, powerful. This is the best on offer. The conditions are excellent for experienced surfers, and with the reef setup, those longer-period waves will line up nicely. It’s a genuine window of quality.

Wednesday the 29th holds similar size but the wind picks back up to moderate breeze, so it’s a step down. Thursday the 30th sees the swell fading to 5 ft with a shorter period, energy dropping to 696.

After that, things go quiet again from Friday the 31st through the first few days of August – small, weak SSW swell, energy under 200, just not worth it. Then from Saturday the 1st of August through Monday the 3rd, the swell pumps back up to 7 ft to 10 ft, but it’s all short-period ENE windswell (7 to 9 seconds) with strong breezes. For the advanced crew, that’s going to be wild and bumpy – maybe more fun for kite surfing than paddle surfing. Energy’s strong, 803 to 1179, but it’s raw.

The last few days, Tuesday the 4th and Wednesday the 5th, fade back down to 4 ft to 5 ft, with lighter winds but poor quality. Nothing to rush for.

So if you’re keen, get on Tuesday morning the 28th of July. That’s the session. Clean, punchy, and proper reef waves.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Tue morning. Warm (max 26°C on Tue morning, min 24°C on Wed night). Mainly strong winds.

Days 4-6 Weather Summary

Some drizzle, heaviest during Sat night. Warm (max 26°C on Fri afternoon, min 24°C on Fri morning). Mainly strong winds.

Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
2
0
1
1
1
1
2
0
2
1
2
1
1
2
2
2
2
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
S
14
0.9
S
14
0.9
S
13
0.5
SSW
24
0.6
SSW
23
0.6
SSW
22
2.1
ENE
7
2
E
7
0.9
SSW
18
0.7
SSW
18
0.8
SSW
17
2.1
ENE
7
2
ENE
8
0.9
SSW
18
2.1
ENE
8
1.1
E
15
1.4
E
16
1.6
E
16
1.6
E
14
1.8
E
14
1.8
E
14
Wave Graph
Metric surfscale
Energy kJ
329
311
277
317
426
363
412
395
503
329
349
482
471
572
547
563
959
1206
1055
1321
1297
Wind (km/h)
25
ENE
25
ENE
20
ENE
35
ENE
30
ENE
30
ENE
40
ENE
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
NE
30
ENE
25
ENE
25
ENE
30
ENE
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-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
11:13AM0.49m
8:56PM0.27m
12:12PM0.54m
10:06PM0.22m
1:02PM0.59m
11:46PM0.19m
1:44PM0.62m
00:59AM0.18m
2:22PM0.66m
1:51AM0.19m
2:56PM0.68m
2:32AM0.21m
3:29PM0.70m
3:10AM0.23m
Low Tide
6:20PM0.26m
4:02AM0.05m
8:25PM0.21m
9:13PM0.17m
5:34AM0.05m
9:41PM0.14m
6:23AM0.04m
10:05PM0.12m
7:08AM0.02m
10:27PM0.11m
7:51AM0.01m
10:49PM0.10m
rain showers
rain showers
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
rain showers
part cloud
clear
part cloud
rain showers
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:00
6:00
6:01
6:01
6:01
6:01
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:14
7:14
7:14
7:13
7:13
7:13
7:12
 mm
1
2
1
1
Temp °C
26
26
25
25
25
25
25
25
24
25
26
24
25
25
25
25
25
25
25
25
25
Feels °C
25
25
24
23
22
23
21
21
21
21
23
21
22
22
23
23
22
23
23
23
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 Threes Surf forecast

The above surf forecast table for Number Threes provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Number Threes can be found by selecting the local surf guide option on the grey menu. Our Number Threes 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 Threes) 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 Threes 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 Threes 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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