Surf Forecasts:
Waiaha Rivermouth / Honls surf forecast from 4 Jul 2026:
- Best quality surf: Saturday 4 Jul, 2AM (local time) - 2ft (0.6m), 22s period, S swell with glassy winds.
- Most powerful swell: Saturday 4 Jul, 5PM (local time) - 3ft (0.9m), 20s period, SSW swell with 634 kJ wave energy.
- Next surfable swell (1★+): Saturday 4 Jul, 2AM (local time) - 2ft (0.6m), 22s 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 Saturday (Jul 04) at 2AM. The primary swell is predicted to be 0.6m and 22s period with a secondary swell of 0.6m and 16s. Another secondary swell of 0.3m and 10s 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 0.9m 20s and forecast to arrive on Saturday (Jul 04) at 5PM. 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 8s period and expected on Wednesday (Jul 08) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sat 4th Jul) | 2ft (0.6m) 22s |
| Best Surf | 2AM (Sat 4th Jul) | 2ft (0.6m) 22s |
| Most Powerful | 5PM (Sat 4th Jul) | 3ft (0.9m) 20s |
Table - best surf conditions forecast for Waiaha Rivermouth / Honls over the next 16 days.
Updates in hr min s Forecast update imminent
Alright folks, Rusty here. We got a long-range look at the local spot, and honestly, it's a slow start. There's a bit of a wait ahead, so if you're itching to paddle out, you'll need some patience.
The first real surf worth mentioning arrives on Saturday, July 4th. Before that, Friday the 3rd is pretty much a write-off with tiny, weak swell (combined energy around 352) and cross-onshore wind that'll just mess it up.
So, for the weekend, the standout is the Waiaha Rivermouth / Honls (reef). Saturday afternoon, July 4th, is the pick of the bunch. We're looking at a clean 3 ft SSW groundswell with a very long period of 20 seconds. The water is a warm 81° F, running about 3° F warmer than usual for this time of year, so you might not need a full suit. The wind goes glassy, which is a major positive for clean conditions, and the combined energy is pumping at 879 – that's strong, juicy energy for a reef setup. This long-period groundswell is gonna wrap in nicely here. Just keep in mind, it's an advanced break and crowds are sometimes a thing, especially when it's looking this good.
Sunday the 5th is still a go with similar 3 ft swell, but the wind turns onshore or cross-on, so it won't be as clean. We then hit a dry spell. From Monday the 6th right through to Friday the 10th of July, the surf is poor to marginal. Swell drops off, periods shorten, and the wind isn't cooperating. The combined energy dips well below 400 for most of that stretch, and the wave state is just messy.
There's a little uptick around July 14th (Tuesday) into the 15th, but the wind is consistently onshore or cross-onshore, so the quality is gonna be poor. We see the swell direction swinging to the WNW, with heights around 3 ft to 3 ft and solid energy numbers (hitting 710 on the 14th afternoon), but without clean wind, it's not worth getting excited about.
All in all, your best bet is to target that Saturday afternoon session at Honls. Everything after that in this 16-day window looks like a gamble with the wind. It's a bit of a flat run, but that's how it goes here sometimes – it won't stay poor forever.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri night. Warm (max 27°C on Fri afternoon, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Mon afternoon. Warm (max 27°C on Thu morning, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Fri 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 16 | S 22 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 13 | S 12 | S 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 208 | 335 | 432 | 634 | 546 | 522 | 504 | 554 | 520 | 387 | 376 | 366 | 273 | 258 | 258 | 192 | 178 | 125 | 115 | 103 | 75 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | cross-on | on | cross-off | on | cross | cross | cross-on | on | glassy | cross-on | cross-on | cross-off | cross-on | cross-on | cross-off | on | glassy | cross-off | cross-on |
High Tide | 6:11PM0.64m | 7:01AM0.27m | 6:45PM0.59m | 8:06AM0.32m | 7:21PM0.52m | 9:15AM0.39m | 8:03PM0.44m | 10:23AM0.47m | 8:53PM0.36m | 11:25AM0.56m | 9:56PM0.29m | 12:21PM0.65m | 11:12PM0.23m | 1:13PM0.73m | |||||||
Low Tide | 1:34AM0.04m | 11:45AM0.13m | 2:03AM0.03m | 12:53PM0.19m | 2:35AM0.02m | 2:25PM0.24m | 3:09AM0.00m | 4:22PM0.25m | 3:49AM-0.02m | 6:17PM0.23m | 4:34AM-0.03m | 7:43PM0.17m | 5:23AM-0.05m | ||||||||
 |  | | |  | | | | |  | | | | | | | | | |  | | |
 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 |
 | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | 7:06 |
mm | — | 1 | — | — | — | — | — | 1 | — | 1 | 1 | — | 1 | 4 | — | 2 | 1 | — | 1 | — | — |
Temp °C | 27 | 26 | 26 | 27 | 26 | 27 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 27 | 27 | 26 | 28 |
Feels °C | 30 | 29 | 29 | 29 | 28 | 29 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 26 | 30 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 13 | S 12 | S 12 |
| kJ | 208 | 198 | 432 | 634 | 546 | 522 | 504 | 554 | 520 | 387 | 376 | 366 | 273 | 258 | 258 | 192 | 178 | 125 | 115 | 103 | 75 |
Swell 2 Height (m) Direction Period (s) | SW 13 | S 22 | SSW 15 | SSW 15 | SSW 14 | SW 14 | SSW 13 | WNW 11 | SSE 10 | NW 10 | NW 10 | S 10 | S 10 | S 9 | W 18 | W 18 | W 17 | W 15 | W 15 | W 14 | W 14 |
| kJ | 40 | 335 | 174 | 158 | 163 | 72 | 34 | 11 | 9 | 4 | 4 | 2 | 2 | 6 | 6 | 6 | 22 | 18 | 38 | 62 | 58 |
Swell 3 Height (m) Direction Period (s) | SSW 23 | SW 12 | WNW 13 | SSW 15 | WNW 12 | SSW 14 | S 11 | SE 9 | WNW 10 | S 10 | S 10 | NNW 10 | — | — | W 18 | W 18 | S 8 | W 15 | SSW 8 | SW 22 | SSW 21 |
| kJ | 107 | 37 | 32 | 71 | 14 | 37 | 9 | 12 | 10 | 2 | 2 | 9 | — | — | 6 | 6 | 5 | 40 | 6 | 19 | 45 |
Wind waves Height (m) Direction Period (s) | SSW 12 | NW 10 | SW 9 | W 9 | — | — | — | SSW 10 | — | — | — | — | NW 3 | — | — | — | NW 2 | S 8 | NNW 4 | — | — |
| kJ | 27 | 15 | 13 | 15 | — | — | — | 18 | — | — | — | — | 3 | — | — | — | 2 | 4 | 2 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 100 | 119 | 0 | 100 | 0 | 19 | 6 | 19 | 0 | 119 | 6 | 0 | 100 | 0 | 19 | 100 | 19 | 0 | 100 | 19 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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