Waiaha Rivermouth / Honls surf break

Waiaha Rivermouth / Honls surfForecast / HAW – Big Island / USA

information circle16 Day Weather and Surf, issued 1 am Sunday 05 Apr 2026 HST
Forecast update in hr  min  s Forecast update imminent
Waiaha Rivermouth / Honls surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waiaha Rivermouth / Honls sea temperature is
24.9° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Waiaha Rivermouth / Honls this week:

The surf forecast for Waiaha Rivermouth / Honls over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Apr 05) at 5PM. The primary swell is predicted to be 0.3m and 16s period with a secondary swell of 0.2m and 16s. Another secondary swell of 0.3m and 3s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Waiaha Rivermouth / Honls in the next 16 days are 0.9m 16s and forecast to arrive on Wednesday (Apr 08) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Thursday (Apr 09) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Sun 5th Apr)1ft (0.3m) 16s
Best Surf11PM (Tue 7th Apr)2.5ft (0.8m) 17s
Most Powerful 2PM (Wed 8th Apr)3ft (0.9m) 16s

Table - best surf conditions forecast for Waiaha Rivermouth / Honls over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 25°C on Mon afternoon, min 22°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 34mm), heaviest during Fri night. Warm (max 25°C on Wed morning, min 23°C on Thu afternoon). Wind will be generally light.

Sunday
05
Monday
06
Tuesday
07
Wednesday
08
Thursday
09
Friday
10
Saturday
11
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
1
0
0
0
2
0
2
2
3
1
2
2
2
2
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
SW
0.3
SW
0.4
SSW
0.4
SSW
0.5
SSW
0.7
SSW
0.7
SSW
0.8
SSW
0.7
SSW
0.9
SSW
0.8
SSW
0.7
SSW
0.8
SSW
0.6
SSW
0.6
S
0.7
S
0.5
S
0.6
S
0.6
S
0.6
S
0.5
S
Period(s) (?)161617161619151714161614151413141413131312
Wave
Graph
(?)Metric surfscale
Energy kJ (?)6740969014937523139419841134121328814713019810712612512575
Wind
(km/h)
15
WNW
5
W
10
NW
10
WSW
10
WSW
10
NNW
10
SW
10
NNW
5
N
5
NNW
5
NW
5
NNE
10
NNW
5
N
5
SSW
10
S
30
SSW
20
S
20
S
20
S
15
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crossglasscrosscross-
on
oncross-
off
oncross-
off
glasscross-
off
crosscross-
off
cross-
off
glassglasscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
6:18PM
0.57
5:38AM
0.21
7:08PM
0.56
6:24AM
0.18
8:07PM
0.54
7:43AM
0.16
9:13PM
0.54
9:42AM
0.16
10:18PM
0.54
11:14AM
0.19
11:15PM
0.54
12:11PM
0.24
12:03AM
0.54
Low Tide
/ height (m)
10:51AM
0.00
1:38AM
0.14
11:20AM
0.02
3:00AM
0.14
11:56AM
0.05
4:30AM
0.13
12:47PM
0.08
5:34AM
0.10
2:07PM
0.10
6:13AM
0.08
3:45PM
0.11
6:43AM
0.05
5:08PM
0.11
Sunday
05
Monday
06
Tuesday
07
Wednesday
08
Thursday
09
Friday
10
Saturday
11
Sunrise6:13--6:13--6:11--6:11--6:11--6:09--6:09--
Sunset-6:38--6:38--6:38--6:38--6:39--6:39--6:39-
part cloud
clear
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
cloud
light rain
part cloud
light rain
heavy rain
heavy rain
rain showers
thunderstorm
thunderstorm
Rain (mm)
----------23-2-31113328
Temp. °C232323242523242424252524242323242425262624
Feels °C (?)242324242525262627272728252626272326262625
  • 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 Waiaha Rivermouth / Honls Surf forecast

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

Waiaha Rivermouth / Honls is 95 km (59 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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