Waiaha Rivermouth / Honls Surf Break

Lat Long: 19.63° N 155.99° W

Waiaha Rivermouth / Honls Surf Forecast and Surf Report

Issued: 1 pm 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Waiaha Rivermouth / Honls sea temperature is
27.1° C
0.9° 

Waiaha Rivermouth / Honls surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Waiaha Rivermouth / Honls surf forecast from 31 Jul 2026:

  • Best quality surf: Thursday 30 Jul, 11PM (local time) - 2.5ft (0.7m), 13s period, SSW swell with glassy winds.
  • Most powerful swell: Thursday 30 Jul, 11PM (local time) - 2.5ft (0.7m), 13s period, SSW swell with 176 kJ wave energy.
  • Next surfable swell (1★+): Thursday 30 Jul, 11PM (local time) - 2.5ft (0.7m), 13s period with SSW swell.

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 Thursday (Jul 30) at 11PM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.5m and 17s. 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 13s and forecast to arrive on Thursday (Jul 30) at 11PM. 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 Sunday (Aug 02) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Thu 30th Jul)2.5ft (0.7m) 13s
Best Surf11PM (Thu 30th Jul)2.5ft (0.7m) 13s
Most Powerful11PM (Thu 30th Jul)2.5ft (0.7m) 13s

Table - best surf conditions forecast for Waiaha Rivermouth / Honls over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s take a look at what’s cooking for the next couple of weeks.

We’re kicking off the outlook on Thursday afternoon, July 30th, but honestly, don’t get your hopes up for the first week and a half. The surf is tiny and the wind is messy. There’s a long stretch of poor to marginal conditions, with barely a ripple to get excited about. The water temp is sitting at 81° which is about average for this time of year, so at least you won’t need a thick suit.

The one spot on the radar is Waiaha Rivermouth / Honls (Honls). This is a reef break for advanced surfers only, and it’s fairly consistent. It’s exposed to the swell, and it loves an optimum swell from the SSW. For the first few days, the swell is small—2ft to 2ft—and the wind is mostly cross-on or onshore, keeping things messy. The combined energy is weak, with values like 325 and 250, which is just not enough grunt.

The real story doesn’t start until Sunday, August 9th. That’s where the dial starts to turn. The morning of the 9th sees a bump in swell to 2ft from the SSW, with a period of 18 seconds. That’s a long period groundswell, and the energy jumps to 572 (moderate). The wind is a light cross-on, so it’s workable. But the standout is Sunday afternoon, August 9th. The wind goes glassy—light NNW at 3 mph—and the swell picks up to 3ft from the SSW. The period is still a nice 18 seconds, and the energy is pumping at 819 (moderate). This is the best session on offer. Clean, glassy conditions with a long period SSW swell. That is a proper window of opportunity at Honls.

Monday, August 10th holds onto the swell, with 4ft sets from the SSW, but the wind swings cross-on again, so it’s not as pure. The energy is still strong at 972 (moderate). It’s still worth a look, but the glassy Sunday arvo is the pick.

After that, the surf slowly fades through the rest of the week, with dropping swell heights and energy back into the 400-600 range. The wind stays light, but it’s mostly cross-on or onshore, so it’s a slow fade to marginal.

For the experts: Sunday afternoon, August 9th is your moment. The glassy conditions and that long period SSW groundswell will make Honls a proper challenge. For the rest of the run, it’s flat or marginal.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Thu afternoon. Warm (max 28°C on Thu afternoon, min 25°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 28°C on Tue afternoon, min 25°C on Sun night). Wind will be generally light.

Thu
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
0
1
0
0
1
0
0
1
0
0
0
0
0
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
S
13
0.7
S
13
0.5
SW
16
0.6
SSW
15
0.6
SSW
15
0.5
SW
14
0.5
SW
14
0.5
SW
14
0.4
SW
13
0.4
SSW
13
0.4
SW
13
0.5
SSW
12
0.5
S
12
0.5
SSW
12
0.4
SSW
12
0.5
S
11
0.4
SW
15
0.4
SSW
11
0.4
SW
15
0.3
SW
14
Wave Graph
Metric surfscale
Energy kJ
163
163
124
152
144
91
91
89
41
59
42
86
75
82
52
63
70
38
64
37
Wind (km/h)
5
WNW
5
SSE
10
W
10
SW
5
S
10
SW
10
WNW
0
SSW
10
WSW
10
WSW
5
SSE
10
WSW
10
SW
10
NW
10
WSW
10
W
5
NW
5
SW
10
NW
5
SE
Wind State
cross-on
cross-on
cross-on
on
cross-on
on
cross
glassy
on
on
glassy
on
on
cross
cross-on
cross-on
glassy
on
cross
cross
High Tide
4:35PM0.70m
4:51AM0.32m
5:04PM0.66m
5:36AM0.36m
5:34PM0.60m
6:27AM0.40m
6:05PM0.54m
7:25AM0.45m
6:38PM0.46m
8:31AM0.50m
7:17PM0.38m
9:44AM0.56m
8:09PM0.30m
Low Tide
11:38PM0.07m
10:10AM0.07m
00:02AM0.06m
10:55AM0.11m
00:27AM0.05m
11:50AM0.16m
00:55AM0.04m
1:00PM0.22m
1:27AM0.03m
2:37PM0.26m
2:05AM0.03m
4:46PM0.26m
2:55AM0.02m
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
6:00
6:00
6:00
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
7:00
7:00
6:59
6:58
6:58
 mm
1
1
Temp °C
28
27
27
28
26
27
27
26
27
27
26
27
27
26
27
28
26
27
27
26
Feels °C
31
30
30
31
29
29
29
29
29
29
29
29
29
29
29
30
29
30
31
31
  • 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
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Waiaha Rivermouth / Honls:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

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 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.

Nearest locationNearest