Waimanu Bay surfForecast / HAW – Big Island / USA

information circle16 Day Weather and Surf, issued 7 pm Wednesday 29 Apr 2026 HST
Forecast update in hr  min  s Forecast update imminent
Waimanu Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waimanu Bay sea temperature is
25.5° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Waimanu Bay this week:

The most powerful waves expected at Waimanu Bay in the next 16 days are 1.9m 8s and forecast to arrive on Friday (May 01) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Fri 1st May)6ft (1.9m) 8s

Table - best surf conditions forecast for Waimanu Bay over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Fri afternoon. Warm (max 25°C on Sat morning, min 22°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 25°C on Mon morning, min 22°C on Sat night). Wind will be generally light.

Thursday
30
Friday
1
Saturday
2
Sunday
3
Monday
4
Tuesday
5
Wed
6
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
1
0
0
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1.4
ENE
7
1.4
ENE
7
1.4
ENE
7
0.8
NNW
13
1.9
ENE
8
1.8
ENE
8
1.8
ENE
8
1.7
ENE
8
1.8
ENE
8
1
NW
14
0.9
NW
13
1.3
ENE
8
1.3
ENE
8
1.4
ENE
8
1.5
E
8
1.4
E
8
1.4
E
8
1.3
E
8
1
E
8
0.9
E
8
0.6
NNW
11
Wave Graph
Metric surfscale
Energy kJ
173
192
192
219
410
403
382
339
408
357
245
196
206
245
265
229
228
207
122
102
84
Wind (km/h)
25
E
25
ENE
25
ENE
25
E
25
E
25
ENE
20
E
20
E
20
E
15
E
20
ENE
20
ENE
20
E
15
ENE
20
E
15
E
15
ENE
15
E
10
ESE
10
ENE
10
E
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross
cross
cross-on
cross-on
High Tide
1:37AM0.61m
2:50PM0.89m
2:04AM0.57m
3:21PM0.92m
2:31AM0.53m
3:54PM0.93m
2:57AM0.50m
4:28PM0.91m
3:23AM0.47m
5:06PM0.88m
3:47AM0.45m
5:47PM0.85m
4:12AM0.43m
6:34PM0.81m
Low Tide
8:32PM0.33m
7:48AM0.09m
9:15PM0.32m
8:12AM0.08m
9:56PM0.33m
8:37AM0.08m
10:37PM0.34m
9:04AM0.08m
11:20PM0.35m
9:32AM0.09m
00:08AM0.37m
10:01AM0.12m
1:09AM0.39m
10:33AM0.15m
clear
part cloud
clear
clear
clear
rain showers
rain showers
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:52
5:50
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:45
6:45
6:45
6:46
6:46
6:46
6:47
1
1
Temp °C
23
24
24
23
24
24
23
25
24
23
24
24
23
25
25
24
25
25
24
25
25
22
22
22
21
22
22
21
25
24
22
24
24
23
26
26
25
26
26
26
26
26
Swell 1
Height (m)
Direction
Period (s)
0.6
NNW
13
0.7
NNW
12
0.7
NW
12
0.9
NE
7
0.8
NNW
13
0.8
NNW
12
0.7
NNW
12
0.7
NW
16
0.9
NNW
15
0.9
NW
14
0.7
NW
13
1.3
ENE
8
1.3
ENE
8
0.5
NW
11
0.4
NW
11
0.6
NW
13
0.6
NW
12
0.6
NW
12
1
E
8
0.9
E
8
0.8
E
8
Energy kJ
116
131
147
91
209
164
117
251
387
264
172
196
206
58
41
128
114
110
122
102
84
Swell 2
Height (m)
Direction
Period (s)
0.4
NE
9
0.4
NE
9
0.4
NE
10
0.8
NNW
13
0.2
NNW
20
0.6
NNW
19
0.7
NNW
12
1
NW
14
0.9
NW
13
0.6
NW
12
0.6
NW
12
0.2
NNW
14
0.4
NW
13
0.1
N
8
0.1
NE
10
0.1
NE
9
0.6
NW
11
0.6
NNW
11
0.6
NNW
11
Energy kJ
19
19
26
219
40
238
127
357
245
118
89
18
44
1
4
3
97
78
76
Swell 3
Height (m)
Direction
Period (s)
0.4
NE
9
0.2
NNE
11
0.2
NNE
8
0.4
NNE
9
0.2
NNW
20
0.9
ESE
8
0.7
ESE
8
0.7
ESE
8
0.1
N
9
0.1
N
9
0.1
E
11
0.2
ENE
9
0.3
NE
8
0.4
NE
8
Energy kJ
19
12
7
33
39
101
62
64
1
1
2
8
11
17
Wind waves
Height (m)
Direction
Period (s)
1.4
ENE
7
1.4
ENE
7
1.4
ENE
7
0.9
E
7
1.9
ENE
8
1.8
ENE
8
1.8
ENE
8
1.7
ENE
8
1.8
ENE
8
1.7
ENE
8
1.4
ENE
8
1.4
ENE
8
1.5
E
8
1.4
E
8
1.4
E
8
1.3
E
8
Energy kJ
173
192
192
86
410
403
382
339
408
353
231
245
265
229
228
207
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
Distance (km)
66
98
66
69
58
58
69
77
24
58
58
58
66
77
72
58
74
74
29
97
70
Best forecast wave conditions in Big Island
Rating
(10 max)
1
1
1
1
1
1
2
1
2
1
1
2
1
1
1
2
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
2
2
3
2
3
3
3
3
2
2
1
3
2
2
3
3
2
2
1
1
Header Global
Rating
(10 max)
5
5
6
7
6
9
5
4
4
4
4
4
5
4
4
4
4
9
9
9
9
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Waimanu Bay Surf forecast

The above surf forecast table for Waimanu Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waimanu Bay can be found by selecting the local surf guide option on the grey menu. Our Waimanu Bay surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Waimanu Bay) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Waimanu Bay may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Waimanu Bay is 74 km (46 miles) from Hilo. If you plan a vacation in Big Island, look for hotels and other accommodation in Hilo. Hilo has rooms for a wide range of budgets as well as car hire and transport links.

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