Nanakuli Blackrocks Surf Break

Lat Long: 21.37° N 158.14° W

Issued: 1 am 28 Jun 2026 (local time)

Forecast update in  hr  min

Today's Nanakuli Blackrocks sea temperature is
26.5° C

Slightly warmer than usual

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


Nanakuli Blackrocks surf forecast from 28 Jun 2026:

  • Best quality surf: Saturday 4 Jul, 5AM (local time) - 2ft (0.6m), 22s period, S swell with offshore winds.
  • Most powerful swell: Sunday 5 Jul, 8AM (local time) - 3ft (0.9m), 18s period, SSW swell with 528 kJ wave energy.
  • Next surfable swell (1★+): Sunday 28 Jun, 8AM (local time) - 2.5ft (0.7m), 18s period with SSW swell.

Best Forecast Surf Conditions for Nanakuli Blackrocks this week:

The surf forecast for Nanakuli Blackrocks over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jun 28) at 8AM. The primary swell is predicted to be 0.7m and 18s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Nanakuli Blackrocks in the next 16 days are 0.9m 18s and forecast to arrive on Sunday (Jul 05) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 8s period and expected on Sunday (Jun 28) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 28th Jun)2.5ft (0.7m) 18s
Best Surf 5AM (Sat 4th Jul)2ft (0.6m) 22s
Most Powerful 8AM (Sun 5th Jul)3ft (0.9m) 18s

Table - best surf conditions forecast for Nanakuli Blackrocks over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Mon afternoon. Warm (max 28°C on Tue afternoon, min 24°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 27°C on Wed morning, min 25°C on Wed morning). Wind will be generally light.

Sunday
28
Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
2
1
1
2
1
2
2
1
0
2
2
1
2
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)
0.6
SSW
18
0.7
SSW
16
0.9
SSW
16
0.7
SSW
15
0.6
S
15
0.8
SSW
14
0.6
SSW
14
0.6
SSW
13
0.5
SW
15
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.6
SSW
13
0.5
SSW
18
0.6
SSW
17
0.6
SSW
17
0.6
SSW
16
0.7
S
21
0.8
S
20
0.8
SSW
19
Wave Graph
Metric surfscale
Energy kJ
246
269
371
228
157
239
143
141
112
180
183
161
175
118
182
229
216
201
441
490
481
Wind (km/h)
20
E
25
ENE
15
ENE
15
E
25
E
20
ENE
15
ENE
20
ENE
20
ENE
25
E
25
ENE
20
ENE
20
ENE
25
ENE
15
ENE
20
E
20
ENE
20
ENE
25
ENE
30
ENE
20
ENE
Wind State
off
off
off
cross-off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
High Tide
3:39PM0.72m
2:56AM0.23m
4:13PM0.73m
3:35AM0.23m
4:46PM0.72m
4:15AM0.23m
5:18PM0.71m
5:00AM0.24m
5:48PM0.69m
5:52AM0.26m
6:16PM0.65m
6:54AM0.29m
6:43PM0.61m
Low Tide
11:18PM0.16m
8:23AM0.04m
11:48PM0.16m
8:59AM0.04m
00:19AM0.15m
9:34AM0.05m
00:49AM0.15m
10:09AM0.08m
1:16AM0.14m
10:46AM0.12m
1:43AM0.14m
11:29AM0.18m
2:08AM0.12m
clear
part cloud
part cloud
part cloud
thunderstorm
clear
clear
clear
clear
part cloud
part cloud
cloud
clear
part cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:54
5:54
5:54
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:17
7:17
7:17
7:17
7:17
7:17
7:17
 mm
1
Temp °C
26
27
25
26
27
25
27
28
26
27
27
25
27
27
25
27
27
25
26
27
25
Feels °C
24
25
24
27
27
24
28
28
26
26
26
25
27
25
25
27
26
24
24
25
24
Swell 1
Height (m)
Direction
Period (s)
0.6
SSW
18
0.7
SSW
16
1
ENE
8
1
ENE
8
1.1
E
8
0.8
SSW
14
1.1
E
7
0.9
ENE
7
0.6
SSE
10
1.2
ENE
8
1.2
ENE
8
0.7
SSW
14
1.2
ENE
8
0.6
SSW
13
0.6
SSW
13
1
ENE
8
1.1
ENE
8
0.6
SSW
16
1.2
ENE
8
0.8
S
20
0.8
SSW
19
Energy kJ
246
269
113
120
138
239
131
91
64
207
202
161
187
118
116
110
131
201
159
490
481
Swell 2
Height (m)
Direction
Period (s)
0.4
SSW
11
0.4
SE
10
0.9
SSW
16
0.7
SSW
15
0.6
S
15
0.5
SE
9
0.6
SSW
14
0.6
SSW
13
0.5
SW
15
0.7
SSW
14
0.7
SSW
14
0.4
SSE
9
0.7
SSW
14
0.5
SE
9
0.5
SSW
18
0.6
SSW
17
0.6
SSW
17
0.4
SSW
12
0.8
SSW
16
0.5
SW
15
0.7
NNE
8
Energy kJ
43
25
371
228
157
41
143
141
112
180
183
33
175
39
182
229
216
59
280
116
59
Swell 3
Height (m)
Direction
Period (s)
0.4
SE
10
0.3
SSW
11
0.6
SSE
10
0.4
SSE
9
0.4
SSE
9
0.2
SSW
10
0.5
SE
10
0.6
SSE
10
0.5
S
13
0.5
SE
10
0.5
SE
10
0.3
SSW
20
0.4
SSE
9
0.4
SSW
18
0.5
SE
9
0.6
SSW
13
0.5
SW
12
0.4
SSW
22
0.7
S
21
0.4
SSW
12
0.7
SSW
15
Energy kJ
25
23
61
33
32
9
46
63
85
46
45
81
32
114
38
114
75
163
441
56
188
Wind waves
Height (m)
Direction
Period (s)
1.3
E
8
1.3
ENE
8
1.2
ENE
8
1.1
ENE
7
1.1
ENE
8
1.4
ENE
8
1.3
ENE
8
1.2
ENE
8
1
ENE
8
1.4
ENE
6
1.3
ENE
8
0.9
ENE
5
Energy kJ
212
218
169
140
149
250
196
155
110
122
196
47
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
1
2
1
2
2
1
1
2
2
2
2
2
2
2
2
2
3
Distance (km)
0
7
0
7
0
0
0
0
0
0
7
0
0
7
0
0
0
0
7
7
0
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
2
2
1
2
2
1
1
2
2
2
2
2
2
2
3
3
3
Best forecast wave conditions in United States
Rating
(10 max)
3
3
4
2
3
2
3
2
2
1
1
2
4
2
2
2
3
2
3
3
3
Header Global
Rating
(10 max)
5
9
7
5
5
5
5
5
5
5
4
8
5
5
4
7
4
4
5
9
5
  • Map Icons:
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  • 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 Nanakuli Blackrocks Surf forecast

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

Nanakuli Blackrocks is 6 km (4 miles) from Makakilo City. If you plan a vacation in Oahu, look for hotels and other accommodation in Makakilo City. Makakilo City has rooms for a wide range of budgets as well as car hire and transport links.

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