Mahai'ula Bay 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
Mahai'ula Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mahai'ula Bay sea temperature is
25.8° C
(Which is slightly warmer than usual)

Time (HST) & DateWave HeightWave Period
Morning (13 May)--
Afternoon (13 May)1ft (0.3m)15s
Evening (13 May)--

Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Fri afternoon. Warm (max 26°C on Wed afternoon, 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)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.4
SSW
15
0.4
SSW
14
0.5
S
14
0.3
SSW
14
0.3
SW
15
0.8
NNE
6
0.8
NNE
6
0.3
SW
15
0.3
SW
14
0.3
SW
14
0.3
NW
16
0.3
NW
16
0.4
NW
15
0.4
NW
15
0.4
NW
15
0.5
NW
14
0.5
NW
14
0.5
NW
13
0.5
NW
13
0.5
NW
13
0.5
NW
13
0.5
NW
12
0.4
NW
12
0.4
NW
12
Wave Graph
Metric surfscale
Energy kJ
0
0
0
0
34
0
0
33
33
33
42
41
59
77
76
102
93
88
87
84
82
75
52
51
Wind (km/h)
5
SE
5
ESE
0
WSW
5
WSW
5
W
0
WNW
5
E
5
E
0
SSE
0
SW
5
N
10
W
5
SW
10
SSW
10
SSW
5
WNW
10
NNW
5
N
5
SSW
15
SW
15
WSW
10
WSW
5
W
0
S
glassy
glassy
glassy
cross-on
glassy
glassy
glassy
glassy
glassy
glassy
glassy
cross-on
cross
cross
cross
glassy
cross-on
cross
cross
cross-on
cross-on
cross-on
on
glassy
High Tide
00:39AM0.54m
1:59PM0.73m
1:26AM0.50m
2:38PM0.82m
2:12AM0.45m
3:19PM0.90m
Low Tide
7:03AM0.05m
8:19PM0.22m
7:34AM0.01m
9:17PM0.18m
8:07AM-0.01m
10:12PM0.15m
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
thunderstorm
part cloud
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
6:52
6:52
1
Temp °C
24
24
24
25
25
26
25
24
24
24
25
25
25
26
25
25
24
24
25
26
26
26
25
25
26
27
27
27
27
29
28
27
28
28
27
26
27
27
27
28
26
26
27
27
27
28
28
29
Swell 1
Height (m)
Direction
Period (s)
0.8
NNE
6
0.7
NNE
6
0.7
NNE
6
0.7
NNE
6
0.7
NNE
6
0.8
NNE
6
0.8
NNE
6
0.7
NNE
6
0.7
NNE
6
0.7
NNE
6
0.7
NNE
6
0.7
NNE
6
0.8
NNE
7
0.8
NNE
7
0.8
NNE
7
0.7
NNE
7
0.6
NNE
7
0.5
NW
13
0.5
NNE
8
0.5
NW
13
0.6
NNE
7
0.6
NNE
7
0.7
NNE
7
0.7
NNE
7
Energy kJ
40
32
32
32
33
44
42
33
33
33
34
35
56
56
50
40
31
88
34
84
33
31
40
40
Swell 2
Height (m)
Direction
Period (s)
0.4
SSW
15
0.4
SSW
14
0.5
S
14
0.3
SSW
14
0.4
SSW
14
0.3
S
13
0.3
SSW
13
0.3
S
13
0.4
SSW
13
0.4
S
13
0.3
S
12
0.3
S
12
0.4
NW
15
0.4
NW
15
0.4
NW
15
0.5
NW
14
0.5
NW
14
0.5
NNE
7
0.5
NW
13
0.4
NNE
7
0.5
NW
13
0.5
NW
12
0.4
NW
12
0.4
NW
12
Energy kJ
71
70
106
40
62
31
35
30
57
53
26
26
59
77
76
102
93
26
87
21
82
75
52
51
Swell 3
Height (m)
Direction
Period (s)
0.3
S
15
0.3
S
14
0.2
S
4
0.3
S
14
0.3
SW
15
0.3
SSW
13
0.3
S
13
0.3
SW
15
0.3
SW
14
0.3
SW
14
0.3
NW
16
0.3
NW
16
0.3
S
12
0.3
S
12
0.3
S
12
0.4
S
12
0.4
S
12
0.4
SSW
16
0.4
SW
16
0.4
SW
16
0.4
SSW
16
0.5
SW
16
0.4
SSE
11
0.4
SSE
11
Energy kJ
38
37
2
32
34
35
31
33
33
33
42
41
25
25
25
45
44
103
64
65
99
124
39
40
Wind waves
Height (m)
Direction
Period (s)
0.2
WSW
2
0.2
S
5
0.2
SSE
10
Energy kJ
1
2
9
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
Distance (km)
15
11
38
100
1
11
11
18
11
18
1
100
19
24
21
0
19
19
38
103
101
101
26
1
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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