Waipio Bay surfForecast / HAW – Big Island / USA

information circle16 Day Weather and Surf, issued 7 pm Saturday 11 Apr 2026 HST
Forecast update in hr  min  s Forecast update imminent
Waipio Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waipio Bay sea temperature is
25.0° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Waipio Bay this week:

The surf forecast for Waipio Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Apr 13) at 8AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.8m and 7s. Another secondary swell of 1.0m and 7s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Waipio Bay in the next 16 days are 0.9m 12s and forecast to arrive on Sunday (Apr 12) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 13s period and expected on Friday (Apr 17) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Mon 13th Apr)3ft (0.9m) 11s
Best Surf 8AM (Mon 13th Apr)3ft (0.9m) 11s
Most Powerful11PM (Sun 12th Apr)3ft (0.9m) 12s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 16mm), heaviest on Sun afternoon. Warm (max 26°C on Sun morning, min 24°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Wed afternoon. Warm (max 25°C on Wed morning, min 23°C on Wed night). Wind will be generally light.

Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Sat
18
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
0
0
0
1
2
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1
E
1.1
E
1.1
E
0.9
NW
0.8
NW
0.8
NW
1
ESE
1
ESE
0.9
E
0.9
E
1.1
E
1
E
0.9
E
0.9
E
0.9
E
1
E
0.9
E
1.2
E
1.3
E
1.1
E
1.1
E
Period(s) (?)887111110777777777777577
Wave
Graph
(?)Metric surfscale
Energy kJ (?)11113813418213713299102767812096787879978514780126116
Wind
(km/h)
10
ESE
10
E
10
E
10
ESE
10
NW
5
ENE
5
ESE
10
ENE
15
E
10
ESE
15
E
10
E
15
ESE
15
E
15
E
10
E
15
ENE
15
E
15
ESE
15
E
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
cross-
on
cross-
on
crossglasscrosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
Low Tide
/ height (m)
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Sat
18
Sunrise-6:05--6:05--6:05--6:03--6:03--6:01--6:01-
Sunset--6:38--6:39--6:39--6:39--6:39--6:40--6:40
thunderstorm
rain showers
mod rain
thunderstorm
part cloud
cloud
part cloud
part cloud
thunderstorm
part cloud
cloud
thunderstorm
part cloud
part cloud
part cloud
part cloud
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
Rain (mm)
1184----2--1-----23-2
Temp. °C252625242626252625242525242525242525242525
Feels °C (?)302928272930292928262727262727262626262727
  • 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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Quick surf report for Waipio Bay:

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Information about the Waipio Bay Surf forecast

The above surf forecast table for Waipio Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waipio Bay can be found by selecting the local surf guide option on the grey menu. Our Waipio 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 (Waipio 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 Waipio 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.

Waipio Bay is 68 km (42 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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