Waiaha Rivermouth / Honls surf break

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

information circle12 Day Weather and Surf, issued 7 pm Saturday 06 Dec 2025 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
26.1° C
(Which is slightly warmer than usual)


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

The surf forecast for Waiaha Rivermouth / Honls over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 06) at 11PM. The primary swell is predicted to be 0.4m and 15s period with a secondary swell of 0.4m and 9s. Another secondary swell of 0.2m and 3s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Waiaha Rivermouth / Honls in the next 12 days are 0.6m 14s and forecast to arrive on Thursday (Dec 11) at 2AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Dec 07) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sat 6th Dec)1.5ft (0.4m) 15s
Best Surf11PM (Tue 9th Dec)2ft (0.6m) 13s
Most Powerful 2AM (Thu 11th Dec)2ft (0.6m) 14s

Table - best surf conditions forecast for Waiaha Rivermouth / Honls over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 25°C on Sat night, 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 23°C on Tue night). Wind will be generally light.

Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Sat
13
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
0
0
1
0
0
0
0
1
1
1
2
2
1
0
1
0
1
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.3
NW
0.3
SW
0.4
NW
0.6
WNW
0.6
WNW
0.6
NW
0.6
NW
0.5
NW
0.6
NW
0.5
NW
0.4
SSW
0.5
SSW
0.4
SSW
0.4
SSW
0.5
NW
0.3
SSW
0.3
SSW
Period(s) (?)151414131513151414131315141314131313111615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)5452464536275813412314013810916083771015756575044
Wind
(km/h)
10
N
10
SW
5
WSW
5
NNW
10
SSW
15
NW
10
S
10
WNW
5
NNW
10
S
10
SW
5
NNW
0
WNW
10
WNW
10
WNW
0
SE
5
WNW
10
NNW
5
SE
5
W
5
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
ononglassoncrosscross-
on
crossglasscross-
on
onglassglasscrosscrossglasscrosscross-
off
glasscross-
on
cross-
on
High Tide
/ height (m)
5:40AM
0.81
5:44PM
0.18
6:27AM
0.75
6:55PM
0.19
7:14AM
0.69
8:19PM
0.23
8:01AM
0.61
9:46PM
0.29
8:48AM
0.53
11:00PM
0.36
9:37AM
0.45
11:56PM
0.45
10:27AM
0.38
Low Tide
/ height (m)
9:55PM
-0.04
1:23PM
0.05
10:42PM
0.01
2:13PM
0.05
11:34PM
0.07
2:59PM
0.05
12:38AM
0.14
3:40PM
0.04
2:05AM
0.20
4:17PM
0.03
3:53AM
0.25
4:50PM
0.02
5:38AM
0.25
5:22PM
0.01
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Sat
13
Sunrise-6:45--6:46--6:46--6:47--6:47--6:48--6:48-
Sunset--5:45--5:45--5:45--5:45--5:45--5:45--5:46
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C252525242525242525242525232424232525232524
Feels °C (?)272727272626262626272626262525252525252524
  • Map Icons:
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  • 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 12 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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