Kahalu'u Beach Park surfForecast / HAW – Big Island / USA

information circle48hr Weather and Surf, issued 1 am Wednesday 13 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Kahalu'u Beach Park surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kahalu'u Beach Park sea temperature is
26.0° C
(Which is 1.0°C warmer than normal for this time of year)

How big are the waves at Kahalu'u Beach Park today?

The current surf forecast for Kahalu'u Beach Park at 6AM is: 0.5m 14s primary swell from a South direction and 0.3m 10s secondary swell from a Northwest direction, 0.2m 4s secondary swell from a North-northwest direction (forecast issued at 01:00am May 13). The wind direction is predicted to be glassy.

Time (HST) & DateWave HeightWave Period
Morning (13 May)1.5ft (0.4m)14s
Afternoon (13 May)1.5ft (0.4m)14s
Evening (13 May)1ft (0.3m)13s

Table - waves today at Kahalu'u Beach Park. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Wed night. Warm (max 26°C on Wed morning, min 24°C on Wed morning). Wind will be generally light.

Wednesday
13
Thursday
14
Friday
15
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
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
1
1
0
0
0
1
1
1
1
1
1
0
1
1
1
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.4
SSW
14
0.5
S
14
0.4
SSW
14
0.4
SSW
14
0.4
SSW
14
0.3
SSW
14
0.3
SW
15
0.4
SSW
13
0.4
S
13
0.4
S
13
0.3
SSW
13
0.2
SSW
18
0.3
S
12
0.3
NW
15
0.3
SW
17
0.3
SW
17
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
16
Wave Graph
Metric surfscale
Energy kJ
70
107
69
68
61
36
35
57
54
52
34
31
25
34
47
45
69
67
66
65
64
64
64
64
Wind (km/h)
5
S
5
SSE
5
WSW
10
WSW
10
W
5
WSW
5
SSE
5
S
5
SSE
5
W
5
NW
10
W
5
SSW
10
S
5
SSW
5
NW
10
NNW
5
NNW
10
SSW
15
SW
10
W
10
WNW
5
NW
0
NW
cross-off
glassy
on
cross-on
on
glassy
cross-off
glassy
glassy
glassy
glassy
on
glassy
cross-off
glassy
cross-on
cross
cross-on
cross-on
cross-on
on
cross-on
cross-on
glassy
High Tide
00:36AM0.54m
1:57PM0.72m
1:23AM0.49m
2:36PM0.82m
2:09AM0.44m
3:17PM0.89m
Low Tide
7:01AM0.05m
8:17PM0.23m
7:31AM0.02m
9:15PM0.19m
8:04AM-0.01m
10:11PM0.16m
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
thunderstorm
thunderstorm
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:51
6:51
6:52
1
1
1
Temp °C
24
24
24
26
25
25
25
24
24
24
25
25
25
25
25
25
25
24
25
26
26
26
25
25
26
27
26
28
27
28
28
26
27
27
27
27
27
26
27
28
27
27
27
27
28
29
28
29
Swell 1
Height (m)
Direction
Period (s)
0.4
SSW
14
0.5
S
14
0.4
SSW
14
0.4
SSW
14
0.4
SSW
14
0.3
SSW
14
0.3
S
13
0.4
SSW
13
0.4
S
13
0.4
S
13
0.3
SSW
13
0.3
S
12
0.3
S
12
0.3
NW
15
0.3
NW
15
0.3
S
12
0.4
NW
14
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.3
NW
12
Energy kJ
70
107
69
68
61
36
31
57
54
52
34
25
25
34
34
25
49
67
66
65
64
64
64
23
Swell 2
Height (m)
Direction
Period (s)
0.3
S
11
0.3
NW
10
0.2
SSW
16
0.2
SSW
15
0.3
SW
15
0.3
S
13
0.3
SSW
13
0.3
SW
15
0.2
SSW
14
0.2
SSW
14
0.2
SSW
14
0.2
SSW
14
0.2
SSW
13
0.2
S
12
0.3
SW
17
0.3
SW
17
0.3
S
12
0.4
NW
13
0.4
NW
13
0.4
NW
13
0.4
NW
13
0.4
NW
12
0.3
NW
12
0.4
SW
16
Energy kJ
22
16
24
22
34
31
35
33
21
21
20
20
16
11
47
45
26
63
62
44
59
54
23
64
Swell 3
Height (m)
Direction
Period (s)
0.3
S
15
0.2
S
11
0.2
WNW
10
0.2
S
13
0.2
S
13
0.2
W
10
0.3
SW
15
0.1
S
10
0.2
SSW
18
0.2
SSW
18
0.2
S
12
0.2
SSW
18
0.2
NNW
16
0.2
SSW
12
0.3
S
12
0.3
NW
14
0.4
SW
16
0.3
S
13
0.2
S
11
0.3
SSW
11
0.3
S
11
0.2
S
11
0.3
S
11
0.3
SSW
18
Energy kJ
38
9
10
14
14
8
34
2
31
31
12
31
24
14
25
33
69
28
10
25
21
9
21
62
Wind waves
Height (m)
Direction
Period (s)
0.2
NNW
4
0.2
NNW
4
0.2
NNW
4
0.2
WSW
2
0.2
NNW
4
0.2
NNW
4
Energy kJ
2
2
2
1
2
2
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
2
1
1
Distance (km)
0
0
13
125
25
0
0
0
0
0
0
94
0
0
0
11
6
6
13
99
94
94
43
0
Best forecast wave conditions in Big Island
Rating
(10 max)
1
1
1
1
1
1
2
1
2
1
2
2
1
2
2
2
2
2
1
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
2
3
1
1
2
1
4
4
4
4
3
3
3
3
4
4
4
4
3
2
3
2
2
2
Header Global
Rating
(10 max)
7
7
9
9
9
9
9
5
5
5
5
5
5
5
5
5
5
5
5
5
5
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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