Number Threes surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 1 pm Monday 18 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Number Threes surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Number Threes sea temperature is
25.5° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Number Threes this week:

The most powerful waves expected at Number Threes in the next 16 days are 3.0m 8s and forecast to arrive on Thursday (May 21) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 11s period and expected on Wednesday (May 20) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Thu 21st May)10ft (3.0m) 8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 25°C on Tue afternoon, min 23°C on Wed night). Mainly strong winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 24°C on Thu afternoon, min 23°C on Thu afternoon). Mainly strong winds.

Mon
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
1
1
1
1
1
0
0
1
1
0
1
1
0
0
0
0
1
0
0
0
0
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)
1.7
ENE
8
1.5
ENE
8
1.4
ENE
8
1.6
ENE
8
1.7
ENE
8
2
ENE
8
2.2
ENE
8
2.5
ENE
8
2.5
ENE
8
3
ENE
8
3
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.3
ENE
8
2.3
ENE
8
2.5
ENE
8
2.4
ENE
8
2.2
ENE
8
2
ENE
8
1.8
ENE
8
Wave Graph
Metric surfscale
Energy kJ
353
259
226
298
353
484
629
871
956
1026
1097
931
804
770
713
713
960
770
597
477
444
Wind (km/h)
35
ENE
25
ENE
30
ENE
35
ENE
35
ENE
40
ENE
40
ENE
40
ENE
45
ENE
45
ENE
40
ENE
40
ENE
40
ENE
35
ENE
35
ENE
40
ENE
40
ENE
40
ENE
40
ENE
40
ENE
40
ENE
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
5:59PM0.73m
5:55AM0.09m
6:52PM0.69m
7:16AM0.09m
7:47PM0.64m
8:55AM0.12m
8:43PM0.58m
10:30AM0.18m
9:37PM0.51m
11:42AM0.26m
10:30PM0.44m
12:35PM0.34m
11:20PM0.37m
1:17PM0.42m
Low Tide
1:48AM-0.01m
10:55AM-0.08m
2:50AM-0.02m
11:49AM-0.02m
3:46AM-0.03m
12:55PM0.05m
4:33AM-0.04m
2:25PM0.11m
5:12AM-0.05m
4:11PM0.16m
5:45AM-0.05m
5:51PM0.17m
6:13AM-0.06m
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:50
5:50
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:02
7:04
7:04
7:04
7:05
7:05
7:06
7:06
Temp °C
24
24
24
25
24
24
24
23
23
24
23
24
24
23
24
24
23
24
24
23
24
20
22
23
23
22
20
19
18
18
18
17
18
19
18
19
19
18
19
19
19
20
Swell 1
Height (m)
Direction
Period (s)
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.8
SSW
15
0.6
SSW
15
0.6
SSW
14
0.5
SSW
14
0.4
SSW
13
0.5
S
16
0.5
S
16
0.5
S
15
0.5
S
14
0.4
SSW
14
0.5
S
16
0.5
S
16
0.6
S
15
0.6
S
15
0.5
S
14
0.5
S
14
0.5
S
14
0.5
S
14
Energy kJ
168
161
178
246
172
163
108
68
132
127
110
106
62
130
125
159
155
93
93
99
99
Swell 2
Height (m)
Direction
Period (s)
0.4
SSW
19
0.4
SSW
16
0.6
SSW
18
0.3
SSE
6
0.4
NW
11
0.3
NNW
12
0.3
NNW
11
0.4
SSW
16
0.3
SSW
13
0.2
SSE
13
0.3
SSE
13
0.3
S
18
0.4
S
18
0.4
SSW
13
0.3
SSW
13
0.2
NNW
15
0.3
NNW
14
0.4
NW
12
0.3
NW
12
0.3
NW
11
0.3
NW
11
Energy kJ
148
91
207
7
30
26
23
91
33
17
32
57
98
60
34
22
36
39
23
20
19
Swell 3
Height (m)
Direction
Period (s)
0.3
SSE
7
0.3
SSE
6
0.3
SSE
6
0.3
NNW
12
0.3
SSE
10
0.3
SSW
18
0.3
SSW
18
0.3
NNW
10
0.2
SSE
13
0.3
SSW
12
0.2
SSW
12
0.2
SSE
12
0.2
SSE
12
0.2
NNW
11
0.2
SSE
12
0.2
SSE
12
0.2
SSE
11
0.3
S
16
0.3
S
16
0.1
SW
20
0.2
SSE
6
Energy kJ
9
8
8
27
18
63
61
22
17
28
14
14
14
11
14
14
12
46
46
16
3
Wind waves
Height (m)
Direction
Period (s)
1.7
ENE
8
1.5
ENE
8
1.4
ENE
8
1.6
ENE
8
1.7
ENE
8
2
ENE
8
2.2
ENE
8
2.5
ENE
8
2.5
ENE
8
3
ENE
8
3
ENE
8
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
2.3
ENE
8
2.3
ENE
8
2.5
ENE
8
2.4
ENE
8
2.2
ENE
8
2
ENE
8
1.8
ENE
8
Energy kJ
353
259
226
298
353
484
629
871
956
1026
1097
931
804
770
713
713
960
770
597
477
444
Nearest Offshore or Glassy
Rating
(10 max)
2
1
2
2
1
2
2
1
1
1
2
1
3
1
1
2
3
1
1
2
1
Distance (km)
39
31
31
39
32
39
46
49
128
128
48
126
202
126
128
202
48
126
126
40
39
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
2
2
2
1
2
3
2
2
Best forecast wave conditions in United States
Rating
(10 max)
3
5
3
3
4
3
2
2
2
1
3
2
3
2
1
2
3
1
1
2
2
Header Global
Rating
(10 max)
4
4
4
5
5
4
4
4
4
5
5
7
4
8
7
5
5
4
5
4
5
  • 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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