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Waimanu Bay surfForecast / HAW – Big Island / USA

information circle12 Day Weather and Surf, issued 7 pm Saturday 21 Dec 2024 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 surf forecast for Waimanu Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 22) at 2AM. The primary swell is predicted to be 2.1m and 14s period with a secondary swell of 0.6m and 9s. Another secondary swell of 0.8m and 9s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Waimanu Bay in the next 12 days are 4.5m 21s and forecast to arrive on Sunday (Dec 22) at 11AM. 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 8s period and expected on Monday (Dec 23) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 22nd Dec)7ft (2.1m) 14s
Best Surf11AM (Sun 22nd Dec)15ft (4.5m) 21s
Most Powerful11AM (Sun 22nd Dec)15ft (4.5m) 21s

Table - best surf conditions forecast for Waimanu Bay over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wednesday
01
Thu
02
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2.1
NNW
4.5
NNW
4.5
NNW
3
NNW
2.4
NNW
1.9
NNW
1.7
NNW
1.6
NNW
1.5
NNW
1.3
NNW
1.5
E
1.9
E
1.1
NW
1.8
NW
1.8
NW
2.1
NW
1.8
NW
1.7
NW
1.5
NW
1.4
NW
1.3
NW
1.1
NW
1
NW
0.9
NW
0.9
NNW
0.7
NNW
1.3
NNW
2
NNW
2.2
NNW
1.9
NNW
1.8
NNW
1.2
NNW
1.1
NNW
0.8
NW
0.8
NW
0.7
NW
Period(s) (?)1421191615141413121286191918181716151414131312121110121211121111161515
Wave
Graph
(?)Metric surfscale
Energy (?)18481711614157525623811484109085267747727523394923311880261118181456100182159537432624023313537010471230927897313256299258236
Wind
(km/h)
5
ESE
10
NE
10
E
20
E
30
E
30
E
25
E
25
E
25
E
25
ESE
20
E
20
E
20
ESE
20
E
20
E
10
SE
5
NNW
10
E
15
E
20
E
20
E
15
ESE
10
ENE
15
E
15
E
25
ENE
25
ENE
20
E
20
ENE
15
E
15
E
20
E
20
E
20
E
20
ENE
20
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
on
cross-
on
crosscrosscross-
on
crosscross-
on
cross-
on
crosscross-
on
cross-
on
crosscross-
on
crosscross-
off
cross-
on
cross-
on
crosscross-
on
cross-
on
crosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscross-
on
cross-
on
crosscross-
on
cross-
on
crosscross-
on
cross-
on
High Tide
/ height (m)
8:17PM
0.44
7:27AM
0.70
10:46PM
0.51
8:00AM
0.63
11:58PM
0.61
8:44AM
0.57
12:36AM
0.70
9:51AM
0.52
1:07AM
0.79
11:02AM
0.48
1:38AM
0.86
12:01PM
0.47
2:09AM
0.92
12:48PM
0.46
2:42AM
0.97
1:29PM
0.46
3:15AM
1.00
2:07PM
0.47
3:49AM
1.02
2:46PM
0.48
4:23AM
1.02
3:28PM
0.48
4:56AM
1.01
4:16PM
0.48
Low Tide
/ height (m)
12:07AM
0.40
3:20PM
0.27
1:51AM
0.50
4:00PM
0.24
4:59AM
0.53
4:38PM
0.20
6:59AM
0.49
5:16PM
0.16
7:56AM
0.44
5:53PM
0.12
8:34AM
0.40
6:29PM
0.08
9:06AM
0.37
7:06PM
0.04
9:36AM
0.34
7:42PM
0.00
10:07AM
0.33
8:18PM
-0.02
10:40AM
0.32
8:53PM
-0.02
11:14AM
0.31
9:29PM
0.01
11:50AM
0.30
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wednesday
01
Thu
02
Sunrise-6:54--6:54--6:54--6:54--6:54--6:56--6:56--6:56--6:56--6:56--6:56--6:58-
Sunset--5:49--5:49--5:50--5:50--5:51--5:51--5:52--5:52--5:52--5:52--5:53--5:53
part cloudpart cloudclearclearclearclearclearclearclearclearclearpart cloudpart cloudclearclearclearclearclearclearclearclearclearclearclearrain showersclearpart cloudpart cloudclearclearrain showersclearclearclearclearclear
Rain (mm)
------------------------1-----1-----
Temp. °C242525232626232525232525232525232525242525232424232424222524232525232525
Feels °C (?)262727242323202323222323222424232627262424222424232222212424232525232425

Short Range Forecast: Mostly dry. Warm (max 26°C on Mon morning, min 23°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Wed morning, min 22°C on Tue night). Wind will be generally light.

Days 6-9 Weather Summary Some drizzle, heaviest during Sun night. Warm (max 25°C on Sat morning, min 22°C on Sat night). Wind will be generally light.

Long Range Forecast: Some drizzle, heaviest during Tue night. Warm (max 25°C on Tue morning, min 22°C on Mon night). Wind will be generally light.

  • 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 12 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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