Waiaha Rivermouth / Honls surf break

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

information circle12 Day Weather and Surf, issued 7 pm Friday 26 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 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 Saturday (Dec 27) at 5AM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.2m and 4s. 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 12 days are 0.8m 12s and forecast to arrive on Monday (Dec 29) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Tuesday (Dec 30) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 27th Dec)1.5ft (0.4m) 10s
Best Surf 5AM (Sat 27th Dec)1.5ft (0.4m) 10s
Most Powerful 5AM (Mon 29th Dec)2.5ft (0.8m) 12s

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 4mm), mostly falling on Fri night. Warm (max 25°C on Mon morning, min 23°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 12mm), heaviest on Tue night. Warm (max 25°C on Tue morning, min 23°C on Tue night). Wind will be generally light.

Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Fri
02
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
0
0
0
0
1
0
1
0
0
0
0
0
0
0
1
0
0
1
1
1
Swell
Height Map
Wave Height (m) & direction (?)
0.4
WNW
0.4
WNW
0.4
WNW
0.4
NW
0.5
WNW
0.5
WNW
0.5
WNW
0.7
WNW
0.7
WNW
0.7
NW
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
Period(s) (?)109915131312111111101091716161615151514
Wave
Graph
(?)Metric surfscale
Energy kJ (?)3328285510299821071031236848214542656456545681
Wind
(km/h)
5
NW
15
WSW
15
NW
5
WSW
15
SW
10
NNW
5
SSE
15
NW
5
WNW
5
WSW
5
WSW
10
W
15
NW
10
S
10
S
10
NNW
5
SW
10
WNW
5
SSE
5
SW
0
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassoncross-
off
cross-
on
oncross-
off
crosscross-
off
cross-
on
ononcross-
on
crosscross-
on
cross-
on
cross-
off
oncross-
on
glassglassglass
High Tide
/ height (m)
9:59PM
0.38
8:40AM
0.44
11:04PM
0.47
9:37AM
0.36
12:01AM
0.57
10:43AM
0.29
12:52AM
0.67
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
Low Tide
/ height (m)
3:03AM
0.24
3:51PM
-0.02
5:04AM
0.24
4:31PM
-0.04
6:48AM
0.20
5:13PM
-0.05
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
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Fri
02
Sunrise-6:56--6:56--6:56--6:56--6:56--6:58--6:58-
Sunset--5:52--5:53--5:53--5:54--5:54--5:55--5:57
rain showers
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
thunderstorm
rain showers
light rain
light rain
rain showers
clear
clear
clear
clear
rain showers
Rain (mm)
3--1-------17121----1
Temp. °C232424242424242525242525242524242425242524
Feels °C (?)252625252526252625252826262624262626272725
  • 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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