Waiaha Rivermouth / Honls surf break

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

information circle12 Day Weather and Surf, issued 7 am Tuesday 30 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
26.0° C
(Which is 1.1°C warmer than normal for this time of year)
Nearby Cam: 9km away, Kohanaiki Web Camera


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 Tuesday (Dec 30) at 5PM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.2m and 13s. Another secondary swell of 0.3m and 2s 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 12 days are 0.5m 14s and forecast to arrive on Friday (Jan 02) 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 0.5m 3s period and expected on Sunday (Jan 04) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Tue 30th Dec)1.5ft (0.5m) 10s
Best Surf 5PM (Tue 30th Dec)1.5ft (0.5m) 10s
Most Powerful 8PM (Fri 2nd Jan)1.5ft (0.5m) 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 Light rain (total 5mm), mostly falling on Tue night. Warm (max 25°C on Tue morning, min 23°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Sun night. Warm (max 25°C on Sat morning, min 22°C on Sun night). Wind will be generally light.

Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
1
0
1
0
1
0
1
1
0
0
1
0
1
1
0
0
1
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
0.6
WNW
0.5
NW
0.4
NW
0.3
SW
0.3
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
NW
0.4
WNW
0.5
NW
0.5
NW
0.4
WNW
0.4
NW
0.3
NW
0.3
SW
0.2
SSW
0.3
SW
0.4
SW
0.4
SW
Period(s) (?)10109171616161515151413131312121315141313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)694821454265645654558088836539242621324444
Wind
(km/h)
10
W
5
WSW
10
NW
5
W
5
WSW
5
NNE
10
W
5
WSW
10
NNW
10
WSW
10
WNW
10
NNW
10
W
5
SSW
10
NNW
10
WNW
5
NW
5
ENE
5
SSE
10
S
5
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
glasscrossglassonoffcross-
on
glasscross-
off
oncrosscross-
off
cross-
on
glasscross-
off
crosscrossglasscrosscross-
on
glass
High Tide
/ height (m)
11:54AM
0.23
1:41AM
0.74
1:01PM
0.20
2:26AM
0.80
2:05PM
0.18
3:11AM
0.83
2:59PM
0.19
3:55AM
0.83
3:51PM
0.20
4:36AM
0.81
4:42PM
0.21
5:16AM
0.76
5:35PM
0.24
Low Tide
/ height (m)
8:06AM
0.14
5:58PM
-0.08
9:06AM
0.09
6:44PM
-0.08
9:55AM
0.05
7:33PM
-0.09
10:39AM
0.02
8:20PM
-0.09
11:20AM
0.01
9:07PM
-0.07
11:58AM
0.01
9:54PM
-0.04
12:35PM
0.01
10:42PM
0.01
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Sunrise6:56--6:56--6:58--6:58--6:58--6:58--6:58--
Sunset-5:54--5:54--5:55--5:57--5:57--5:58--5:59-
part cloud
cloud
rain showers
light rain
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
mod rain
mod rain
rain showers
rain showers
Rain (mm)
--32-------------10642
Temp. °C252524242424252523242423252424252424242524
Feels °C (?)272726262625262624252425272526272627252726
  • 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 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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