Waimanu Bay surfForecast / HAW – Big Island / USA

information circle16 Day Weather and Surf, issued 7 pm Sunday 24 May 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
25.7° 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 Tuesday (May 26) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 10s period and expected on Monday (May 25) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Tue 26th 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 Sun night. Warm (max 25°C on Mon morning, min 22°C on Sun night). Mainly fresh winds.

Days 5-7 Weather Summary

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

Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sun
31
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
0
0
0
0
0
0
1
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
NE
8
1.7
ENE
8
1.7
NE
8
1.6
NE
8
1.7
ENE
8
1.9
ENE
8
1.7
ENE
8
1.6
ENE
8
1.6
ENE
8
0.6
NW
14
1.6
ENE
7
1.4
ENE
7
1
E
7
1.3
ENE
7
1.5
ENE
7
1.4
ENE
7
1.6
ENE
8
1.6
E
7
1.4
E
8
1.3
ENE
7
1.2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
456
356
362
276
319
408
345
270
270
127
261
203
103
167
228
220
300
279
221
186
169
Wind (km/h)
25
E
25
ENE
25
ENE
25
E
25
E
35
ENE
25
E
25
E
25
ENE
20
E
25
E
25
E
20
E
20
ENE
20
E
15
E
15
E
15
E
10
E
15
ENE
15
ENE
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
10:08PM0.68m
12:22PM0.66m
10:55PM0.62m
1:02PM0.75m
11:38PM0.57m
1:36PM0.83m
00:18AM0.54m
2:07PM0.89m
00:56AM0.51m
2:38PM0.92m
1:31AM0.49m
3:10PM0.94m
2:05AM0.47m
3:43PM0.95m
Low Tide
5:18AM0.19m
5:47PM0.45m
5:47AM0.16m
7:02PM0.43m
6:14AM0.13m
7:59PM0.40m
6:43AM0.10m
8:45PM0.37m
7:12AM0.08m
9:24PM0.35m
7:42AM0.07m
10:01PM0.34m
8:13AM0.06m
rain showers
clear
clear
rain showers
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:43
5:41
5:41
5:41
5:41
5:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:54
6:54
6:55
6:55
6:57
6:57
6:57
6:58
1
1
2
Temp °C
23
25
25
23
25
25
23
24
25
23
25
25
23
25
25
24
25
25
24
25
25
20
22
23
21
22
22
20
22
23
21
23
23
21
24
25
24
25
25
25
26
26
Swell 1
Height (m)
Direction
Period (s)
0.5
NW
12
0.4
NNW
11
0.4
NW
11
0.4
NW
11
0.3
NW
10
0.2
NNW
10
0.4
NW
18
0.5
NW
15
0.6
NW
15
0.9
NE
8
0.6
NW
13
0.5
NW
12
0.8
NNE
8
0.7
N
11
0.6
NNE
11
0.6
NNE
10
0.4
NNW
11
0.4
NNW
10
0.4
NNW
10
0.4
NNW
9
0.4
NNW
9
Energy kJ
69
48
30
29
16
10
111
112
134
82
109
77
72
114
91
78
46
39
38
29
29
Swell 2
Height (m)
Direction
Period (s)
0.6
NW
12
0.5
NW
11
0.5
NW
11
0.4
NW
11
0.1
N
13
0.1
NW
20
0.2
NNW
10
0.2
NNW
10
0.2
N
13
0.6
NW
14
0.4
NNE
13
0.4
N
11
0.5
NW
12
0.5
NW
12
0.5
NW
12
0.4
NNW
11
0.4
NNE
10
0.4
NNE
9
0.4
NNE
9
0.3
NNE
8
0.4
N
8
Energy kJ
114
60
59
29
4
15
9
9
14
118
55
41
72
68
65
48
32
29
25
14
21
Swell 3
Height (m)
Direction
Period (s)
0.1
N
12
0.1
N
12
0.1
N
14
0.2
NNW
9
0.4
N
12
0.2
NNW
16
0.3
NNE
14
0.5
N
10
0.6
NW
12
0.6
NNW
11
0.6
NNW
11
0.4
NNE
10
0.4
NNE
9
0.2
NNW
8
0.2
N
8
0.6
N
9
Energy kJ
3
3
4
8
48
25
36
50
110
87
82
32
29
6
5
59
Wind waves
Height (m)
Direction
Period (s)
1.9
NE
8
1.7
ENE
8
1.7
NE
8
1.6
NE
8
1.7
ENE
8
1.9
ENE
8
1.7
ENE
8
1.6
ENE
8
1.6
ENE
8
1.1
E
7
1.6
ENE
7
1.4
ENE
7
1
E
7
1.3
ENE
7
1.5
ENE
7
1.4
ENE
7
1.6
ENE
8
1.6
E
7
1.4
E
8
1.3
ENE
7
1.2
ENE
8
Energy kJ
456
356
362
276
319
408
345
270
270
127
261
203
103
167
228
220
300
279
221
186
169
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
2
1
1
2
1
1
1
1
3
1
2
1
1
1
2
1
1
Distance (km)
58
58
58
58
77
58
58
77
58
29
58
58
68
77
77
58
77
77
60
77
77
Best forecast wave conditions in Big Island
Rating
(10 max)
1
1
1
1
2
1
2
2
2
2
1
1
3
1
3
3
1
1
2
2
1
Best forecast wave conditions in United States
Rating
(10 max)
3
2
2
3
2
1
4
2
2
2
2
2
4
4
3
4
3
2
4
3
3
Header Global
Rating
(10 max)
4
5
4
9
9
6
9
9
6
9
8
6
5
5
5
5
5
7
7
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)
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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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