Waiaha Rivermouth / Honls surf break

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

information circle16 Day Weather and Surf, issued 1 am Tuesday 07 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
25.0° 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 Tuesday (Apr 07) at 8PM. The primary swell is predicted to be 0.8m and 17s period with a secondary swell of 0.4m and 16s. The wind is predicted to be cross-offshore 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-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Thursday (Apr 09) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 7th Apr)2.5ft (0.8m) 17s
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 Heavy rain (total 47mm), heaviest during Thu night. Warm (max 26°C on Tue morning, min 22°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 48mm), heaviest during Fri morning. Warm (max 25°C on Fri morning, min 23°C on Fri morning). Wind will be generally light.

Tuesday
07
Wednesday
08
Thursday
09
Friday
10
Saturday
11
Sunday
12
Monday
13
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
1
3
3
2
1
1
1
0
0
0
0
0
1
0
1
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
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
0.5
NW
0.5
NW
0.4
SW
0.5
S
0.5
S
0.6
S
Period(s) (?)151714161614151414141413131312111213131313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)231394198411341213288147132198107126125125756066549089125
Wind
(km/h)
10
W
10
NW
5
S
0
E
5
NW
5
NNW
5
NW
5
SSE
10
SE
25
S
20
SE
20
SSE
10
SSW
5
W
5
S
5
WNW
10
NW
5
WSW
10
SW
20
S
5
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
crosscross-
on
glasscross-
off
glasscrosscross-
on
crosscross-
on
crosscross-
on
oncross-
on
glasscross-
on
cross-
off
glassoncross-
on
on
High Tide
/ height (m)
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
12:53PM
0.31
12:46AM
0.53
1:32PM
0.39
1:25AM
0.50
Low Tide
/ height (m)
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
7:08AM
0.03
6:16PM
0.09
7:32AM
0.00
7:16PM
0.07
Tuesday
07
Wednesday
08
Thursday
09
Friday
10
Saturday
11
Sunday
12
Monday
13
Sunrise6:11--6:11--6:11--6:09--6:09--6:07--6:07--
Sunset-6:38--6:38--6:39--6:39--6:39--6:40--6:40-
clear
rain showers
rain showers
light rain
thunderstorm
thunderstorm
light rain
light rain
heavy rain
heavy rain
rain showers
rain showers
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
part cloud
part cloud
rain showers
Rain (mm)
-1522211332662222143--2
Temp. °C262624252524242424252424252525252424252625
Feels °C (?)272627292727272625252424272829292728282726
  • 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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