Waiaha Rivermouth / Honls surf break

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

information circle16 Day Weather and Surf, issued 7 pm Monday 30 Mar 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 slightly warmer than usual)

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 (Mar 31) at 5AM. The primary swell is predicted to be 0.3m and 12s period with a secondary swell of 0.2m and 12s. 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 0.7m 19s and forecast to arrive on Tuesday (Apr 07) 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 0.2m 4s period and expected on Thursday (Apr 02) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 31st Mar)1ft (0.3m) 12s
Best Surf11PM (Mon 6th Apr)2ft (0.6m) 18s
Most Powerful 2AM (Tue 7th Apr)2.5ft (0.7m) 19s

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 Light rain (total 4mm), mostly falling on Mon night. Warm (max 24°C on Tue morning, min 22°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Fri morning, min 22°C on Thu night). Wind will be generally light.

Tuesday
31
Wednesday
01
Thursday
02
Friday
03
Saturday
04
Sunday
05
Mon
06
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
0
0
0
0
0
1
1
0
1
0
1
1
0
0
1
0
0
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.3
SSW
0.3
SSW
0.3
SSW
0.3
SSW
0.4
SSW
0.4
SSW
0.3
SSW
0.3
S
0.3
SSW
0.4
SSW
0.4
S
0.3
SW
0.4
SSW
0.3
SW
0.3
SW
0.3
SSW
0.3
SSW
0.3
SW
0.4
SSW
0.4
SSW
0.5
SSW
Period(s) (?)121212121211111514131216121518181816171616
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2929282744432438365947404738496263409689149
Wind
(km/h)
5
ESE
10
SSW
5
SW
5
SE
5
W
10
SSW
10
N
5
SW
5
W
0
SE
5
WNW
5
WNW
5
WSW
10
W
10
SSW
10
NNW
10
W
5
SW
10
NNW
10
SW
10
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassononglasscross-
on
oncross-
off
glasscross-
on
glasscross-
on
glassglasscross-
on
oncross-
off
cross-
on
oncross-
off
oncross-
on
High Tide
/ height (m)
2:35AM
0.52
3:13PM
0.48
3:07AM
0.46
3:48PM
0.52
3:37AM
0.40
4:23PM
0.55
4:05AM
0.35
4:58PM
0.57
4:34AM
0.30
5:36PM
0.58
5:04AM
0.25
6:18PM
0.57
5:38AM
0.21
7:08PM
0.56
Low Tide
/ height (m)
8:26PM
0.04
9:01AM
-0.02
9:15PM
0.05
9:22AM
-0.03
10:02PM
0.06
9:43AM
-0.03
10:49PM
0.08
10:04AM
-0.02
11:38PM
0.10
10:27AM
-0.01
12:33AM
0.12
10:51AM
0.00
1:38AM
0.14
11:20AM
0.02
Tuesday
31
Wednesday
01
Thursday
02
Friday
03
Saturday
04
Sunday
05
Mon
06
Sunrise-6:18--6:16--6:16--6:16--6:15--6:13--6:13-
Sunset--6:37--6:37--6:37--6:37--6:37--6:38--6:38
thunderstorm
clear
thunderstorm
thunderstorm
clear
part cloud
part cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
Rain (mm)
2-11-----------------
Temp. °C232423232324232423232424232424232424232424
Feels °C (?)252524252325242523252525252425252525252525
  • 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 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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