Waiaha Rivermouth / Honls Surf Break

Lat Long: 19.63° N 155.99° W

Waiaha Rivermouth / Honls Surf Forecast and Surf Report

Issued: 1 pm 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Waiaha Rivermouth / Honls sea temperature is
27.0° C
1.1° 

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 13 Jul 2026:

  • Best quality surf: Tuesday 14 Jul, 11PM (local time) - 2.5ft (0.7m), 17s period, W swell with glassy winds.
  • Most powerful swell: Thursday 16 Jul, 11PM (local time) - 4.5ft (1.3m), 12s period, SSW swell with 472 kJ wave energy.
  • Next surfable swell (1★+): Monday 13 Jul, 2AM (local time) - 2.5ft (0.7m), 16s period with SW 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 Monday (Jul 13) at 2AM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 0.4m and 12s. Another secondary swell of 0.3m 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 16 days are 1.3m 12s and forecast to arrive on Thursday (Jul 16) 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 0.5m 3s period and expected on Sunday (Jul 12) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Mon 13th Jul)2.5ft (0.7m) 16s
Best Surf11PM (Tue 14th Jul)2.5ft (0.7m) 17s
Most Powerful11PM (Thu 16th Jul)4.5ft (1.3m) 12s

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


G’day, I’m Rusty. Let’s look at what’s coming up for Honls.

Right off the bat, we’re looking at a pretty quiet run for the next couple of weeks. Nothing’s firing out of the gate – the first few days are mostly small, weak, and messy. The water temp at Honls is sitting at 81°, which is a touch warmer than normal for this time of year, so it’s a nice balmy bath if you’re just floating around.

Sunday 12 July afternoon’s got a tiny 2ft SSW swell with a 16-second period – that’s a long-period groundswell, but it’s only pushing 328 combined energy, so pretty weak. Winds are light WSW, so it’s clean enough, but the waves are just too marginal to get excited about. Monday 13 July is similar, same small 2ft SW swell, but Monday morning has a bit of cross-on breeze and Monday afternoon gets a stronger S wind at 15 km/h, making it choppy and poor. Tuesday 14 July morning sees a pulse of 2ft W swell with a very long 19-second period and combined energy jumping to 549 – that’s moderate energy, but the swell height is tiny. Winds are light and onshore, so it’s clean but tiny. Not really surfable.

The first real standout comes on Thursday 16 July afternoon. The swell drops a little to 3ft, but it’s now coming from the SSW at 13 seconds, and combined energy climbs to 723 – moderate energy. The wind goes glassy – dead calm – which is a major positive. That’s clean, smooth surf. The waves are small, but for a reef break like Honls, that glassy condition and reasonable energy should give you some fun little lines. Keep in mind, Honls is an advanced reef break, and it’s fairly consistent, but crowds can show up sometimes. This is the best window of the whole forecast.

After that, it’s back to small, marginal conditions. Friday 17 July morning has a 3ft SW swell at 10 seconds – short period – and combined energy of 538, but winds are light onshore. Decent enough for a paddle but nothing special. From Saturday 18 July right through to the end of the month, the swell sits between 1ft and 3ft, mostly from the south or SSW, with periods varying from 12 to 21 seconds. The combined energy stays mostly in the 200–400 range, so weak. Winds are often onshore or cross-onshore, and the surf is consistently described as poor or marginal. Even the 23 July afternoon has a 1ft SSW swell with a massive 21-second period, but the energy is only 307 – it’s a long-period groundswell but just too small and weak to do anything with.

Honestly, outside of that Thursday 16 July afternoon glass-off, there’s not much to write home about. The rest of the 16-day window is a long stretch of tiny, weak, and often choppy conditions. If you’re keen, keep an eye on that Thursday afternoon – it’s your best shot.

Rusty.

Short Range Forecast

Moderate rain (total 14mm), heaviest on Mon night. Warm (max 27°C on Sun afternoon, min 24°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Thu afternoon, min 24°C on Wed night). Wind will be generally light.

Sun
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
1
2
1
0
2
2
1
3
0
1
2
1
3
3
2
1
2
1
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SW
16
0.7
SW
16
0.7
SW
15
0.7
SW
15
0.5
W
18
0.6
W
19
0.7
W
16
0.7
W
17
0.8
WNW
16
0.8
WNW
16
0.8
WNW
15
0.8
WNW
15
0.8
W
15
1.3
SSW
11
1
SW
10
0.6
SSW
16
0.6
W
14
0.6
SSW
14
0.6
SSW
14
0.5
S
12
0.5
SSW
13
Wave Graph
Metric surfscale
Energy kJ
258
248
229
217
162
251
267
273
329
320
304
292
295
411
204
196
153
160
158
76
90
Wind (km/h)
5
WSW
5
NW
5
W
15
S
10
NNW
10
SSW
10
SSW
10
NNW
10
SSW
10
WNW
5
NW
10
WNW
5
WSW
5
NNW
10
WSW
5
W
0
WNW
10
WSW
10
SW
0
N
10
SW
Wind State
on
glassy
cross-on
cross-on
cross-off
on
cross-on
cross-off
on
cross-on
cross
cross
glassy
glassy
on
cross-on
glassy
on
on
glassy
on
High Tide
2:48PM0.83m
2:33AM0.20m
3:32PM0.84m
3:28AM0.22m
4:15PM0.83m
4:20AM0.24m
4:56PM0.79m
5:14AM0.27m
5:34PM0.72m
6:10AM0.31m
6:11PM0.64m
7:10AM0.35m
6:47PM0.55m
8:16AM0.40m
Low Tide
10:16PM0.05m
7:57AM-0.08m
10:56PM0.03m
8:47AM-0.06m
11:34PM0.02m
9:37AM-0.03m
00:10AM0.02m
10:28AM0.02m
00:44AM0.02m
11:21AM0.08m
1:17AM0.02m
12:21PM0.15m
1:50AM0.02m
1:35PM0.22m
rain showers
rain showers
rain showers
part cloud
rain showers
clear
part cloud
rain showers
rain showers
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:54
5:54
5:54
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:06
7:06
7:05
7:05
7:05
7:05
7:05
 mm
2
1
1
4
5
1
Temp °C
27
26
26
25
25
26
26
25
26
26
25
26
27
26
27
27
27
27
27
26
27
Feels °C
31
29
28
26
28
28
29
28
27
27
26
28
29
29
30
29
30
30
29
29
30
  • 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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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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