Waiaha Rivermouth / Honls surf break

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

information circle12 Day Weather and Surf, issued 1 am Sunday 31 Aug 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
27.1° 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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 31) at 5AM. The primary swell is predicted to be 0.5m and 13s period with a secondary swell of 0.3m and 16s. 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 0.9m 16s and forecast to arrive on Saturday (Sep 06) 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 0.1m 9s period and expected on Sunday (Sep 07) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sun 31st Aug)1.5ft (0.5m) 13s
Best Surf 5AM (Sat 6th Sep)2ft (0.6m) 17s
Most Powerful 8PM (Sat 6th Sep)3ft (0.9m) 16s

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 2mm), mostly falling on Mon afternoon. Warm (max 27°C on Sun morning, min 24°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Fri morning, min 25°C on Wed morning). Wind will be generally light.

Sunday
31
Monday
01
Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
2
Swell
Height Map
Wave Height (m) & direction (?)
0.3
SSW
0.3
S
0.5
S
0.3
S
0.5
S
0.4
SSW
0.4
S
0.5
S
0.3
NW
0.3
NW
0.3
NW
0.3
NW
0.3
NW
0.3
NW
0.2
SSW
0.2
SSW
0.3
SSW
0.6
S
0.7
SSW
0.8
SSW
0.7
SSW
Period(s) (?)181816171616151513131212111115181816151614
Wave
Graph
(?)Metric surfscale
Energy (?)12912615887158102961626663423240413655103225274371306
Wind
(km/h)
15
WNW
5
WNW
5
WNW
10
W
10
WSW
10
W
15
WNW
15
NW
10
SW
10
WSW
15
NW
5
WNW
15
WSW
15
NW
5
WNW
10
SW
10
WSW
10
NW
10
WSW
10
WSW
15
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
glasscross-
on
oncross-
on
crosscrossoncross-
on
crossglasscross-
on
crossglassoncross-
on
crosscross-
on
oncross-
off
High Tide
/ height (m)
10:45AM
0.59
10:03PM
0.23
11:46AM
0.63
11:39PM
0.24
12:36PM
0.67
12:39AM
0.26
1:18PM
0.70
1:24AM
0.30
1:55PM
0.73
2:05AM
0.35
2:31PM
0.73
2:44AM
0.40
3:04PM
0.70
3:25AM
0.46
Low Tide
/ height (m)
7:00PM
0.21
3:36AM
0.13
7:38PM
0.17
4:49AM
0.12
8:07PM
0.14
5:51AM
0.09
8:33PM
0.12
6:45AM
0.07
8:57PM
0.09
7:34AM
0.05
9:21PM
0.08
8:22AM
0.05
9:45PM
0.05
Sunday
31
Monday
01
Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunrise6:07--6:07--6:07--6:07--6:09--6:09--6:09--
Sunset-6:39--6:38--6:37--6:37--6:36--6:35--6:34-
part cloud
part cloud
part cloud
part cloud
thunderstorm
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
Rain (mm)
----2----------------
Temp. °C272625262626262625262625262625272726272726
Feels °C (?)292829292928262727272727272826282828292928
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for HAW - Big Island

  1. weather stationWind Update Continuing clean conditions at Waiaha Rivermouth / Honls (calm at Kailua Kona 4 km from Waiaha Rivermouth / Honls). 0.6m 14s groundswell from the SSW with a 0.2m 7s swell from the S. 2 swells combining to make bigger set waves.

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Actual: 26 min ago

0 km/h
SSE
Clean
Please reload the page to see if there are any updates.

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Waiaha Rivermouth / Honls surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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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