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Waiaha Rivermouth / Honls Surf Forecast
/ HAW – Big Island (60 breaks) / Hawaii (267 breaks) /
Waiaha Rivermouth / Honls surfForecast / HAW – Big Island / USA
12 Day Weather and Surf, issued 7 pm Wednesday 16 Jul 2025 HST
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 Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 16th Jul) | 1.5ft (0.4m) 13s |
| Best Surf | 11PM (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.
Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Mon 28 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 15 | 17 | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 15 | 14 | 14 | 21 | 19 | 19 | 19 | 17 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 18 | 17 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 91 | 57 | 73 | 96 | 89 | 120 | 168 | 208 | 165 | 141 | 122 | 110 | 96 | 64 | 53 | 98 | 94 | 131 | 141 | 157 | 131 | 157 | 103 | 174 | 124 | 122 | 110 | 107 | 108 | 92 | 102 | 86 | 58 | 75 | 51 | 70 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | on | glass | on | cross- on | glass | cross- on | on | cross- on | on | cross- on | cross | cross- on | cross- on | cross- on | on | cross- on | cross- on | on | on | glass | on | on | on | on | on | glass | cross- on | on | glass | cross | cross- on | cross | cross- 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 |
 |  | | |  |  | | | | | | | | | | | | |  | | | | | | | | | | | | | | |  | |  | |
Rain (mm) | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | 1 | - | 2 | - | - | - | - | - | - | - | - | 1 | - | 1 |
| Temp. °C | 26 | 26 | 26 | 25 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 |
| Feels °C (?) | 29 | 27 | 28 | 28 | 29 | 28 | 28 | 29 | 28 | 29 | 29 | 28 | 29 | 30 | 28 | 30 | 29 | 28 | 29 | 29 | 28 | 28 | 27 | 28 | 28 | 28 | 29 | 29 | 30 | 30 | 29 | 29 | 29 | 30 | 30 | 30 |
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. | |||||||||||||||||||||||||||||||||
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for HAW - Big Island
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.
1 h 48 min ago
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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 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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