Waimanu Bay surfForecast / HAW – Big Island / USA

information circle16 Day Weather and Surf, issued 7 pm Sunday 26 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 1.1m 15s and forecast to arrive on Saturday (May 02) at 2PM. 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 2PM (Sat 2nd May)3.5ft (1.1m) 15s

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 3mm), mostly falling on Mon afternoon. Warm (max 25°C on Mon morning, min 22°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

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

Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
1
Saturday
2
Sun
3
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
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
Swell
Height Map
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<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)
1.2
NE
8
1.6
ENE
7
1.5
ENE
7
1.3
ENE
7
1.3
ENE
7
1.7
ENE
7
1.1
E
7
1.1
ENE
7
0.6
NNW
14
0.6
NNW
13
1.5
ENE
8
1.5
ENE
7
0.9
NNW
13
0.9
NNW
13
0.9
NNW
12
0.7
NW
18
1.8
ENE
8
1.9
ENE
8
1.7
ENE
8
1.5
ENE
8
0.9
NW
14
Wave Graph
Metric surfscale
Energy kJ
173
273
225
149
161
293
126
108
136
116
250
228
273
257
226
312
388
441
353
270
288
Wind (km/h)
15
E
20
E
20
E
15
E
15
E
20
E
15
E
20
ENE
15
ENE
20
E
20
E
25
ENE
20
E
20
ENE
20
E
20
E
20
ENE
20
ENE
15
E
15
ENE
15
ENE
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
00:02AM0.73m
1:11PM0.69m
00:37AM0.69m
1:46PM0.77m
1:08AM0.65m
2:19PM0.85m
1:37AM0.61m
2:50PM0.89m
2:04AM0.57m
3:21PM0.92m
2:31AM0.53m
3:54PM0.93m
2:57AM0.50m
4:28PM0.91m
Low Tide
6:41AM0.18m
6:53PM0.34m
7:03AM0.15m
7:45PM0.33m
7:26AM0.12m
8:32PM0.33m
7:48AM0.09m
9:15PM0.32m
8:12AM0.08m
9:56PM0.33m
8:37AM0.08m
10:37PM0.34m
9:04AM0.08m
clear
clear
thunderstorm
clear
clear
clear
rain showers
clear
clear
clear
clear
rain showers
clear
clear
clear
clear
clear
rain showers
rain showers
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:54
5:52
5:52
5:52
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:44
6:44
6:45
6:45
6:45
6:45
6:45
6:46
2
1
1
1
1
1
Temp °C
24
25
25
23
24
24
23
24
24
23
25
24
23
25
25
23
25
25
23
24
24
25
25
26
23
24
24
22
23
24
23
24
23
22
24
24
22
25
25
22
24
25
Swell 1
Height (m)
Direction
Period (s)
1.2
NE
8
0.6
NNW
11
0.5
NW
11
0.4
NNW
10
0.4
NNW
10
0.4
NW
10
0.7
NE
7
0.5
NW
14
0.6
NNW
14
0.7
NE
7
0.7
NW
12
0.8
NNW
12
0.9
NNW
13
0.9
NNW
13
1.3
NE
8
0.8
NNW
11
0.9
NW
15
1
NW
14
0.9
NW
13
0.6
NW
12
0.9
E
8
Energy kJ
173
79
57
42
42
27
49
96
136
52
152
180
273
257
222
148
331
401
249
118
111
Swell 2
Height (m)
Direction
Period (s)
0.6
NNW
11
0.4
NE
9
0.4
NNE
9
0.3
NNE
8
0.4
NE
8
0.2
NNW
15
0.4
NW
13
0.4
NE
10
0.4
NE
9
0.6
NNW
13
0.7
NE
8
0.4
NE
10
0.6
NE
7
0.4
NE
9
0.9
NNW
12
0.7
NW
18
0.7
NNW
12
1
NW
13
0.4
NNW
15
0.9
NW
14
Energy kJ
85
21
32
14
17
21
46
24
21
116
64
26
39
23
226
312
123
336
87
288
Swell 3
Height (m)
Direction
Period (s)
0.2
W
10
0.1
NE
12
0.1
NE
11
0.2
NNE
10
0.1
NW
16
0.1
S
11
0.4
NW
10
0.6
ESE
7
0.1
S
10
0.4
NNE
9
0.1
S
10
0.2
NNE
8
0.6
NNE
9
0.1
N
21
0.2
NNW
20
0.9
NNW
11
0.9
NW
12
0.9
NW
12
Energy kJ
7
5
5
10
10
2
24
36
2
29
2
7
49
9
38
204
216
216
Wind waves
Height (m)
Direction
Period (s)
0.7
E
8
1.6
ENE
7
1.5
ENE
7
1.3
ENE
7
1.3
ENE
7
1.7
ENE
7
1.1
E
7
1.1
ENE
7
1.1
ENE
7
0.9
E
7
1.5
ENE
8
1.5
ENE
7
1
E
8
1.4
ENE
8
0.8
E
8
1.4
ENE
8
1.8
ENE
8
1.9
ENE
8
1.7
ENE
8
1.5
ENE
8
1
NE
7
Energy kJ
57
273
225
149
161
293
126
108
102
74
250
228
114
231
74
238
388
441
353
270
102
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
2
1
1
1
1
1
1
1
2
1
1
2
1
2
1
1
Distance (km)
69
77
77
58
77
77
66
77
77
70
77
58
58
77
32
58
77
24
69
77
77
Best forecast wave conditions in Big Island
Rating
(10 max)
1
1
1
1
1
2
1
1
1
1
1
1
1
2
1
2
2
2
2
1
2
Best forecast wave conditions in United States
Rating
(10 max)
2
1
1
2
2
2
2
2
1
3
2
1
3
3
3
4
3
2
2
3
2
Header Global
Rating
(10 max)
6
6
5
5
5
9
7
8
6
5
4
5
8
6
5
4
4
4
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)
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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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