Hakalau surfForecast / HAW – Big Island / USA

information circle48hr Weather and Surf, issued 7 am Monday 18 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Hakalau surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Hakalau sea temperature is
25.7° C
(Which is slightly warmer than usual)

How big are the waves at Hakalau today?

The current surf forecast for Hakalau at 3PM is: 1.8m 8s primary swell from a East direction and 0.2m 15s secondary swell from a North-northwest direction (forecast issued at 07:00am May 18). The wind direction is predicted to be cross-onshore.

Time (HST) & DateWave HeightWave Period
Morning (18 May)6ft (1.9m)8s
Afternoon (18 May)6ft (1.8m)8s
Evening (18 May)4.5ft (1.3m)8s

Table - waves today at Hakalau. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 43mm), heaviest during Wed morning. Warm (max 25°C on Mon afternoon, min 23°C on Tue night). Wind will be generally light.

Monday
18
Tuesday
19
Wednesday
20
Thu
21
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
Rating
(10 max)
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.9
E
8
1.9
E
8
1.8
E
8
1.8
E
8
1.3
ESE
8
1.3
ESE
8
1.4
ENE
8
1.4
ENE
8
1.6
E
8
1.6
E
8
1.6
E
8
1.6
E
8
1.7
E
8
1.3
ENE
8
1.4
ENE
8
1.9
E
8
1.5
ENE
8
1.6
ENE
9
1.8
ENE
8
2.2
ENE
9
2.2
ENE
9
2.2
ENE
9
2.2
ENE
9
2.2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
489
477
428
428
239
239
264
270
347
339
339
339
386
198
236
493
267
386
443
676
676
692
676
660
Wind (km/h)
15
ESE
15
ESE
20
ESE
20
ESE
15
E
15
ESE
15
SE
15
ESE
15
ESE
20
ESE
20
ESE
20
E
15
E
15
E
15
ESE
15
ESE
15
E
15
E
20
E
20
E
20
E
15
E
15
E
20
E
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
High Tide
3:08AM0.54m
4:54PM1.09m
3:52AM0.50m
5:46PM1.04m
4:45AM0.46m
6:41PM0.98m
Low Tide
9:21AM-0.03m
11:52PM0.36m
10:04AM0.02m
00:59AM0.36m
10:51AM0.10m
rain showers
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
rain showers
rain showers
thunderstorm
clear
thunderstorm
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:43
5:43
5:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:50
6:50
6:51
6:51
1
3
3
2
3
2
1
1
1
1
1
2
2
2
2
3
4
3
1
1
1
1
2
Temp °C
24
24
24
25
25
24
24
24
24
24
24
24
24
24
24
23
23
23
24
24
24
23
23
23
26
25
25
26
27
26
25
25
26
25
25
25
25
25
26
24
24
24
25
24
25
24
23
23
Swell 1
Height (m)
Direction
Period (s)
0.3
NNW
10
1.9
E
8
1.8
E
8
1.8
E
8
1.3
ESE
8
1.3
ESE
8
1.4
ENE
8
1.4
ENE
8
1.6
E
8
1.6
E
8
1.6
E
8
1.6
E
8
1.7
E
8
1.3
ENE
8
1.4
ENE
8
1.3
ENE
8
1.5
ENE
8
1.6
ENE
9
1.1
ESE
9
2.2
ENE
9
2.2
ENE
9
2.2
ENE
9
2.2
ENE
9
0.4
NNW
11
Energy kJ
19
477
428
428
239
239
264
270
347
339
339
339
386
198
236
213
267
386
186
676
676
692
676
46
Swell 2
Height (m)
Direction
Period (s)
0.2
NNW
16
0.3
NNW
10
0.3
NNW
9
0.2
NNW
15
1.2
ENE
8
1.2
ENE
8
0.8
ESE
9
0.8
ESE
10
0.3
NW
12
0.4
NW
12
0.4
NW
12
0.3
NW
11
0.4
NW
11
1.2
ESE
8
1.2
ESE
8
1.2
ESE
8
1.2
ESE
8
1.3
ESE
8
0.4
NNW
12
0.4
NNW
12
0.4
NNW
12
0.4
NNW
11
0.4
NNW
11
0.3
SSE
13
Energy kJ
25
18
17
21
154
154
108
120
23
37
34
19
32
185
190
190
202
234
54
56
55
47
46
35
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
10
0.2
NNW
15
0.2
NNW
15
0.2
NNW
9
0.2
NNW
14
0.2
NNW
13
0.2
NNW
13
0.2
NNW
12
0.1
NW
9
0.1
NW
8
0.1
SE
15
0.2
NNW
13
0.1
SE
15
0.4
NNW
12
0.4
NNW
12
0.4
NNW
13
0.4
NNW
11
0.4
NNW
11
0.2
SSE
14
0.2
SSE
14
0.2
SSE
14
0.2
SSE
14
0.3
SSE
14
0.1
S
17
Energy kJ
4
23
21
8
18
18
17
15
3
3
9
18
9
54
54
65
47
47
19
19
19
19
37
6
Wind waves
Height (m)
Direction
Period (s)
1.9
E
8
1.9
E
8
1.8
ENE
8
2.2
ENE
8
Energy kJ
489
493
443
660
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
1
1
3
2
Distance (km)
18
18
158
74
96
158
17
16
14
95
158
160
95
95
20
20
20
20
160
160
95
95
20
95
Best forecast wave conditions in Big Island
Rating
(10 max)
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
3
2
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
4
4
4
4
3
4
3
3
4
4
4
4
4
3
3
1
1
3
4
4
4
Header Global
Rating
(10 max)
5
5
4
4
4
4
4
4
5
4
5
5
5
4
5
5
4
5
5
4
4
5
5
4
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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