Mahai'ula Bay surfForecast / HAW – Big Island / USA

information circle48hr Weather and Surf, issued 1 pm Tuesday 26 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
26.2° C
(Which is slightly warmer than usual)

How big are the waves at Mahai'ula Bay today?

The current surf forecast for Mahai'ula Bay at 10PM is: 0.4m 18s primary swell from a Northwest direction and 0.4m 3s secondary swell from a West direction (forecast issued at 01:00pm May 26). An open ocean swell of 1.2m 7s is not directed at the surf break, a second open ocean swell of 0.6m 15s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & DateWave HeightWave Period
Morning (26 May)--
Afternoon (26 May)1.5ft (0.4m)3s
Evening (26 May)1.5ft (0.4m)18s

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 Tue night. Warm (max 25°C on Tue afternoon, min 24°C on Tue night). Wind will be generally light.

Tue
26
Wednesday
27
Thursday
28
Fri
29
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
5 AM
8 AM
Rating
(10 max)
0
0
0
0
1
1
1
1
1
0
1
0
1
1
1
1
0
0
0
0
0
0
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)
0.6
S
16
0.4
W
3
0.3
W
3
0.3
NW
18
0.4
NW
18
0.4
NW
17
0.5
NW
16
0.5
NW
16
0.6
NW
15
0.6
NW
15
0.6
NW
14
0.6
NW
14
0.6
NW
14
0.6
NW
13
0.6
NW
13
0.6
NW
13
0.5
NW
13
0.5
NW
12
0.5
NW
12
0.5
S
22
0.7
S
21
0.7
S
21
0.8
S
20
0.9
S
20
Wave Graph
Metric surfscale
Energy kJ
0
2
1
51
81
97
127
125
178
174
169
162
151
142
140
138
80
73
72
0
0
0
0
0
Wind (km/h)
10
SW
10
W
0
W
5
ESE
5
ENE
5
ENE
10
NE
10
NE
5
WSW
10
SW
5
WSW
5
N
5
NE
5
E
5
ENE
5
NE
10
SW
10
SW
5
SSW
0
WSW
0
SW
0
WNW
5
NE
0
ESE
cross-on
cross-on
glassy
glassy
cross-off
glassy
cross-off
cross-off
glassy
cross-on
glassy
cross-on
glassy
cross-off
glassy
glassy
cross
cross-on
cross
glassy
glassy
glassy
glassy
glassy
High Tide
1:34PM0.67m
00:44AM0.44m
2:08PM0.74m
1:29AM0.40m
2:40PM0.78m
2:11AM0.37m
Low Tide
8:00PM0.28m
6:54AM0.08m
8:53PM0.24m
7:22AM0.07m
9:38PM0.21m
7:52AM0.07m
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:45
5:45
5:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:57
6:57
6:58
1
Temp °C
25
25
25
25
24
24
24
25
25
25
25
25
24
24
24
25
25
25
25
25
24
24
24
25
26
27
28
27
25
26
24
25
26
26
27
27
25
26
25
27
26
27
27
28
26
27
25
27
Swell 1
Height (m)
Direction
Period (s)
0.9
NNE
8
0.9
NNE
7
1
NNE
7
1
NNE
7
1.2
NNE
7
1.2
NNE
6
0.9
NNE
6
0.7
NNE
7
0.7
NNE
7
0.7
NNE
7
0.7
NE
7
0.8
NNE
7
0.8
NNE
7
0.8
NNE
7
0.7
NNE
7
0.6
NNE
7
0.6
NNE
7
0.6
NNE
7
0.7
NE
6
0.8
NNE
6
0.8
NNE
6
0.7
S
21
0.8
S
20
0.9
S
20
Energy kJ
88
93
114
114
123
106
66
40
43
42
47
59
56
53
42
33
31
30
42
49
44
436
525
624
Swell 2
Height (m)
Direction
Period (s)
0.6
S
16
0.6
S
16
0.6
S
15
0.6
S
15
0.6
S
15
0.6
S
14
0.6
S
14
0.6
S
14
0.6
S
14
0.6
NW
15
0.6
S
13
0.6
S
13
0.6
NW
14
0.6
S
13
0.6
S
12
0.6
S
12
0.6
S
12
0.6
S
12
0.6
S
12
0.6
S
12
0.7
S
21
0.7
NNE
6
0.7
NNE
8
0.8
NNE
13
Energy kJ
174
172
163
153
150
146
144
140
134
174
125
123
151
116
107
105
103
103
102
98
449
29
54
195
Swell 3
Height (m)
Direction
Period (s)
0.3
SSE
4
0.3
SSE
4
0.3
S
4
0.3
NW
18
0.4
NW
18
0.4
NW
17
0.5
NW
16
0.5
NW
16
0.6
NW
15
0.6
S
13
0.6
NW
14
0.6
NW
14
0.6
S
13
0.6
NW
13
0.6
NW
13
0.6
NW
13
0.5
NW
13
0.5
NW
12
0.5
NW
12
0.5
S
22
0.5
S
12
0.5
S
11
0.5
S
11
0.5
S
11
Energy kJ
4
4
3
51
81
97
127
125
178
130
169
162
119
142
140
138
80
73
72
236
66
64
61
61
Wind waves
Height (m)
Direction
Period (s)
0.4
W
3
0.3
W
3
0.5
W
3
0.4
W
3
0.4
WSW
3
0.1
NW
10
0.3
WNW
2
Energy kJ
2
1
5
3
3
4
1
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
2
3
2
3
1
Distance (km)
103
103
1
1
0
0
0
0
0
100
0
100
0
0
0
0
99
113
100
18
18
100
18
1
Best forecast wave conditions in Big Island
Rating
(10 max)
3
3
1
2
2
2
2
2
1
2
1
1
2
2
2
2
2
2
2
3
2
3
3
Best forecast wave conditions in United States
Rating
(10 max)
3
7
4
2
3
4
4
3
3
3
4
4
4
4
4
2
2
2
4
4
4
4
4
4
Header Global
Rating
(10 max)
6
7
7
9
9
7
8
6
6
9
9
9
7
9
8
7
7
6
6
6
5
5
5
5
  • 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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