Waiaha Rivermouth / Honls surf break

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

information circle12 Day Weather and Surf, issued 7 pm Wednesday 16 Jul 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
26.6° 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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 16) at 11PM. The primary swell is predicted to be 0.4m and 13s period with a secondary swell of 0.1m and 9s. Another secondary swell of 0.2m and 9s 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 0.6m 16s and forecast to arrive on Saturday (Jul 19) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Jul 20) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 16th Jul)1.5ft (0.4m) 13s
Best Surf11PM (Wed 16th Jul)1.5ft (0.4m) 13s
Most Powerful 8AM (Sat 19th Jul)2ft (0.6m) 16s

Table - best surf conditions forecast for Waiaha Rivermouth / Honls over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Mon
28
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.5
S
0.4
S
0.4
S
0.4
S
0.4
SW
0.4
SW
0.5
SW
0.6
SSW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.3
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.3
SW
0.2
SSW
0.2
SSW
0.3
SW
Period(s) (?)121212121517161615151414131313151414211919191718181716161616161616181716
Wave
Graph
(?)Metric surfscale
Energy (?)91577396891201682081651411221109664539894131141157131157103174124122110107108921028658755170
Wind
(km/h)
10
S
15
W
5
SSW
5
WNW
10
WSW
5
W
5
WNW
10
W
10
SW
10
WNW
10
WSW
10
W
10
WNW
10
W
10
W
5
WSW
10
SW
10
WNW
5
WSW
10
SW
10
WSW
5
WNW
15
SW
10
SW
5
WSW
10
SW
5
WSW
5
W
10
W
10
WSW
5
W
15
NW
10
WNW
5
NW
10
WNW
5
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
onglassoncross-
on
glasscross-
on
oncross-
on
oncross-
on
crosscross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
ononglassonononononglasscross-
on
onglasscrosscross-
on
crosscross-
on
on
High Tide
/ height (m)
9:58AM
0.49
8:31PM
0.37
11:06AM
0.58
9:34PM
0.29
12:07PM
0.66
10:55PM
0.23
1:02PM
0.73
12:17AM
0.20
1:51PM
0.78
1:26AM
0.19
2:37PM
0.81
2:23AM
0.20
3:19PM
0.81
3:13AM
0.23
3:59PM
0.80
3:59AM
0.25
4:35PM
0.76
4:45AM
0.28
5:09PM
0.71
5:32AM
0.31
5:41PM
0.64
6:22AM
0.35
6:11PM
0.57
Low Tide
/ height (m)
2:45AM
-0.01
4:02PM
0.26
3:27AM
-0.02
6:04PM
0.23
4:15AM
-0.02
7:38PM
0.18
5:07AM
-0.03
8:40PM
0.13
6:01AM
-0.04
9:27PM
0.09
6:53AM
-0.04
10:07PM
0.06
7:44AM
-0.04
10:43PM
0.05
8:31AM
-0.03
11:16PM
0.05
9:17AM
-0.01
11:47PM
0.05
10:02AM
0.03
12:15AM
0.05
10:47AM
0.08
12:43AM
0.06
11:37AM
0.14
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Mon
28
Sunrise-5:54--5:54--5:54--5:54--5:54--5:56--5:56--5:56--5:56--5:56--5:58--5:58-
Sunset--7:05--7:05--7:05--7:04--7:04--7:04--7:04--7:02--7:02--7:02--7:01--7:01
part cloudpart cloudpart cloudpart cloudclearrain showerspart cloudclearpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudrain showerspart cloudpart cloudpart cloudrain showerspart cloudrain showerspart cloudpart cloudpart cloudpart cloudpart cloudpart cloudclearpart cloudthunderstorm part cloudthunderstorm
Rain (mm)
-----1------------1---1-2--------1-1
Temp. °C262626252726262726262726262626262726262626252626252626262727262727262727
Feels °C (?)292728282928282928292928293028302928292928282728282829293030292929303030

Short Range Forecast: Some drizzle, heaviest during Fri afternoon. Warm (max 27°C on Fri morning, min 25°C on Wed night). Wind will be generally light.

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

Days 6-9 Weather Summary Light rain (total 4mm), mostly falling on Tue night. Warm (max 26°C on Tue night, min 24°C on Thu night). Wind will be generally light.

Long Range Forecast: Light rain (total 3mm), mostly falling on Sun night. Warm (max 27°C on Sat morning, min 25°C on Fri night). Wind will be generally light.

  • 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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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). 0.7m 13s groundswell from the S with a 0.5m 3s local chop from the W. Swells combining to make to make bigger set waves.

    Waiaha Rivermouth / Honls
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1 h 48 min ago

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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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