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

information circle48hr Weather and Surf, issued 7 am Sunday 17 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
26.0° C
(Which is slightly warmer than usual)
Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 7mm), mostly falling on Mon afternoon. Warm (max 27°C on Sun morning, min 25°C on Sun night). Wind will be generally light.

Sunday
17
Monday
18
Tuesday
19
Wed
20
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
0.4
SW
14
0.5
SSW
16
0.5
SSW
15
0.5
SSW
16
0.7
SSW
15
0.7
SSW
15
0.7
SSW
15
0.7
SSW
14
0.5
N
6
0.5
N
5
0.8
SSW
15
0.8
SSW
16
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.5
N
6
0.8
SSW
15
0.6
SSW
14
0.7
SSW
14
0.6
SSW
14
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.7
SSW
14
Wave Graph
Metric surfscale
Energy kJ
73
0
0
0
0
0
0
0
17
14
0
0
0
0
0
18
0
0
0
0
0
0
0
0
Wind (km/h)
10
NE
5
S
10
SW
15
WSW
10
SW
10
S
5
SSE
0
NW
5
NNE
5
NNW
5
W
15
SW
10
SW
5
WNW
0
WSW
0
SE
5
ESE
0
NE
10
W
5
WSW
5
SW
5
S
5
SSE
5
NE
cross-off
glassy
cross-on
cross-on
cross-on
cross-off
glassy
glassy
glassy
glassy
cross-on
cross-on
cross-on
on
glassy
glassy
glassy
glassy
on
glassy
cross-on
glassy
glassy
glassy
High Tide
3:44AM0.36m
4:48PM0.95m
4:33AM0.32m
5:37PM0.93m
5:26AM0.30m
6:28PM0.88m
Low Tide
9:22AM-0.03m
00:03AM0.13m
10:03AM-0.01m
1:02AM0.14m
10:48AM0.03m
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
thunderstorm
thunderstorm
part cloud
part cloud
clear
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:47
5:47
5:47
5:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:53
6:53
1
1
1
1
1
1
Temp °C
25
26
27
27
27
26
26
25
25
26
27
27
26
26
25
25
25
25
26
26
26
26
25
25
27
29
29
28
29
28
30
29
28
29
30
29
29
30
29
29
29
29
29
29
29
30
29
29
Swell 1
Height (m)
Direction
Period (s)
0.5
SSW
16
0.5
SSW
16
0.6
NNE
8
0.5
SSW
16
0.7
SSW
15
0.7
SSW
15
0.7
NE
7
0.8
NNE
7
0.7
NNE
7
0.7
NNE
6
0.8
SSW
15
0.8
NNE
6
0.8
NNE
6
0.7
NNE
6
0.8
NNE
6
0.8
SSW
15
0.8
SSW
15
0.6
SSW
14
0.7
SSW
14
0.7
NNE
6
0.8
SSW
14
0.8
SSW
14
0.9
NNE
6
0.8
NNE
5
Energy kJ
144
137
41
137
196
193
49
59
38
34
242
47
51
32
49
256
242
163
180
31
239
239
56
36
Swell 2
Height (m)
Direction
Period (s)
0.5
S
6
0.5
NNE
8
0.5
SSW
15
0.6
NNE
8
0.6
NNE
8
0.6
NNE
7
0.7
SSW
15
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
NNE
6
0.8
SSW
16
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
NNE
6
0.7
NNE
6
0.7
NNE
6
0.7
NNE
6
0.6
SSW
14
0.7
NNE
6
0.8
NNE
6
0.8
SSW
14
0.7
SSW
14
Energy kJ
22
33
135
41
42
36
188
183
183
180
33
277
166
163
163
33
32
32
30
160
29
44
233
210
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
14
0.5
S
7
0.5
S
7
0.4
SSE
6
0.4
SSE
6
0.4
SSE
6
0.4
SSE
6
0.3
S
6
0.3
S
6
0.4
SSE
10
0.6
SSW
19
0.4
SW
19
0.4
SSW
16
0.4
SSE
10
0.4
SSE
10
0.4
SSE
10
0.3
SSE
10
0.4
SSW
17
0.4
SSW
17
0.4
SSW
17
0.3
SSE
10
0.3
SSE
10
0.3
SSE
10
0.3
SSE
9
Energy kJ
73
23
22
14
13
13
13
7
7
33
251
96
87
31
31
32
20
101
99
101
18
18
18
17
Wind waves
Height (m)
Direction
Period (s)
0.3
NNW
3
0.5
N
6
0.5
N
5
0.5
N
6
Energy kJ
2
17
14
18
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
1
1
2
1
1
1
1
2
1
2
2
1
2
2
2
2
2
2
2
2
1
Distance (km)
0
24
101
113
36
18
13
11
11
11
100
34
100
100
11
11
11
11
100
113
38
38
38
11
Best forecast wave conditions in Big Island
Rating
(10 max)
2
2
2
1
2
2
1
2
2
1
3
2
2
2
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
2
2
2
2
5
7
5
4
5
4
4
2
4
4
4
4
4
3
3
3
4
4
5
4
Header Global
Rating
(10 max)
8
6
4
4
5
7
5
4
5
4
4
4
4
4
4
4
4
4
4
4
5
4
4
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

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mahai'ula Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest locationNearest
Nearest locationNearest
Nearest locationNearest