Waiaha Rivermouth / Honls Surf Break

Lat Long: 19.63° N 155.99° W

Waiaha Rivermouth / Honls Surf Forecast and Surf Report

Issued: 1 pm 21 Jul 2026 (local time)

Forecast update in  hr  min

Today's Waiaha Rivermouth / Honls sea temperature is
26.8° C
0.7° 

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 22 Jul 2026:

  • Best quality surf: Tuesday 21 Jul, 11PM (local time) - 3.5ft (1.0m), 13s period, S swell with cross-offshore winds.
  • Most powerful swell: Saturday 25 Jul, 2PM (local time) - 3.5ft (1.0m), 18s period, SSW swell with 692 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 21 Jul, 11PM (local time) - 3.5ft (1.0m), 13s period with S 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 Tuesday (Jul 21) at 11PM. The primary swell is predicted to be 1.0m and 13s period with a secondary swell of 0.4m and 26s. 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 1.0m 18s and forecast to arrive on Saturday (Jul 25) at 2PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Tue 21st Jul)3.5ft (1.0m) 13s
Best Surf11PM (Tue 21st Jul)3.5ft (1.0m) 13s
Most Powerful 2PM (Sat 25th Jul)3.5ft (1.0m) 18s

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 we’ve got on the table for Honls. It’s a bit of a quiet stretch overall, but there are a couple of moments if you’re patient.

The Overall Picture

We’re looking at Honls over the next couple of weeks, and honestly, it’s a mixed bag. The bulk of the period is filled with marginal conditions and questionable tide states. The combined swell energy is moderate, sitting between 411 and 931 for most of the first week, but the wind is rarely your friend. You’ll see a lot of cross-on and onshore breezes chopping things up. There’s no real standout quality for the first week. We’ve got a blank run for most of the first 10 days or so where it's just not worth paddling out.

Tuesday 21st July – Thursday 24th July

The forecast kicks off on Tuesday afternoon with a 3 ft south swell, but with a 15 km/h cross-shore wind, it’s not doing us any favours. The water temp is sitting at a normal 80°, right about average for this time of year. Wednesday and Thursday see the swell dropping to 2 ft - 3 ft, mostly from the SSW, but the wind swings onshore and cross-onshore, making for a fairly choppy surface. The combined energy is noticeable at 642-835, but without clean wind, it’s a no-go.

Friday 25th July – Tuesday 29th July

Friday to Tuesday keeps the trend of small, marginal surf. Swell heights hover around 2 ft to 3 ft from the SSW, but the wind is problematic. We get a mix of light onshore and cross-onshore breezes, and the wave period drops from 20 seconds down to 14 seconds. The combined energy fades from 819 down to 245, showing a definite loss of power. The conditions are simply poor to marginal.

Wednesday 30th July – Monday 4th August

By the end of July and start of August, we see the direction shift a bit. Friday the 31st brings a 3 ft west swell with a 13-second period, but the wind is cross-shore, limiting the appeal. The combined energy picks up slightly to 506. However, the real highlight comes on Monday the 4th of August. This is the one to circle on your calendar. For the Monday morning session, we get a glassy 2 ft SSW swell with a 14-second period and no wind. Combined energy at 373 is still modest, but that clean, glassy surface is a rare treat in this outlook. It’s the standout window for a sneaky, clean paddle. Tuesday morning is also worth a look with a cross-shore 2 ft SSW swell (combined energy 375), but the glass on Monday morning is the best on offer.

The Final Standout

If you’re picking one true moment, it’s Monday the 4th of August. The forecast conditions are clean, glassy water on a small but workable SSW swell. It’s not going to be pumping, but for a quiet, uncrowded session, it’s the best we’ve got in this 16-day run.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue afternoon, min 25°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Fri afternoon, min 25°C on Fri night). Wind will be generally light.

Tue
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
1
1
3
1
2
2
2
2
2
2
2
3
2
1
1
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
S
14
0.9
S
13
0.6
SSW
24
0.7
SSW
23
0.8
SSW
21
0.8
SSW
20
0.9
SSW
20
0.9
SSW
18
0.7
SSW
18
0.9
SSW
17
0.7
SSW
20
0.9
SSW
16
1
SSW
18
1
SSW
18
0.9
SSW
16
0.9
SSW
16
0.8
SSW
16
0.8
SSW
15
0.8
SSW
14
0.7
SSW
14
Wave Graph
Metric surfscale
Energy kJ
298
268
437
550
611
517
544
464
322
428
399
395
662
655
457
427
320
284
280
210
Wind (km/h)
15
NW
5
SSE
15
WNW
10
SSW
15
NNW
15
SW
10
W
10
WNW
10
SSW
10
NW
10
SE
5
WNW
10
SW
5
N
5
WSW
10
SW
10
NW
5
SSW
10
SSW
0
NNW
Wind State
cross
cross
cross-on
on
cross-off
on
cross-on
cross
cross-on
cross
cross
cross-on
on
glassy
on
on
cross
on
on
glassy
High Tide
8:40PM0.30m
11:37AM0.56m
9:45PM0.25m
12:30PM0.61m
11:11PM0.22m
1:15PM0.66m
00:26AM0.21m
1:55PM0.69m
1:23AM0.22m
2:31PM0.71m
2:10AM0.23m
3:05PM0.73m
2:51AM0.25m
Low Tide
5:17PM0.27m
3:40AM0.03m
7:08PM0.23m
4:27AM0.03m
8:14PM0.19m
5:17AM0.03m
8:54PM0.16m
6:06AM0.02m
9:26PM0.13m
6:52AM0.02m
9:55PM0.11m
7:34AM0.01m
10:23PM0.10m
rain showers
rain showers
clear
rain showers
rain showers
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
5:56
5:56
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:04
7:04
7:02
7:02
7:02
7:01
 mm
1
2
2
1
Temp °C
27
26
26
26
26
27
27
26
27
27
26
27
27
26
27
27
26
27
26
25
Feels °C
29
28
30
29
30
29
29
29
28
29
29
28
28
28
30
29
29
30
28
28
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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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