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Waimanu Bay Surf Forecast
/ HAW – Big Island (60 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Waimanu Bay surfForecast / HAW – Big Island / USA
12 Day Weather and Surf, issued 7 pm Sunday 30 Nov 2025 HSTForecast update in hr min s Forecast update imminent
Waimanu Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waimanu Bay sea temperature is
25.9° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Waimanu Bay this week:
The surf forecast for Waimanu Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Dec 01) at 2AM. The primary swell is predicted to be 1.8m and 16s period with a secondary swell of 0.8m and 8s. Another secondary swell of 1.0m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Waimanu Bay in the next 12 days are 1.8m 16s and forecast to arrive on Monday (Dec 01) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 12s period and expected on Tuesday (Dec 02) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 1st Dec) | 6ft (1.8m) 16s |
| Best Surf | 2AM (Mon 1st Dec) | 6ft (1.8m) 16s |
| Most Powerful | 2AM (Mon 1st Dec) | 6ft (1.8m) 16s |
Table - best surf conditions forecast for Waimanu Bay over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Mostly dry. Warm (max 25°C on Mon morning, min 22°C on Mon night). Wind will be generally light. | Days 3-6 Weather Summary Some drizzle, heaviest during Wed night. Warm (max 26°C on Fri morning, min 23°C on Wed night). Mainly fresh winds. | |||||||||||||||||||||
Monday 01 | Tuesday 02 | Wednesday 03 | Thursday 04 | Friday 05 | Saturday 06 | Sun 07 | ||||||||||||||||
| 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) (?) | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 6 | 14 | 14 | 16 | 15 | 14 | 14 | 13 | 8 | 8 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 1750 | 1420 | 1076 | 763 | 573 | 412 | 295 | 287 | 255 | 205 | 153 | 180 | 384 | 701 | 1170 | 1102 | 672 | 604 | 421 | 432 | 488 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- on | cross | cross | cross- on | cross- on | cross | cross- on | cross- on | cross | cross- on | cross | cross | cross- on | cross- on | cross | cross- on | cross | cross | cross- on | cross- on | |
High Tide / height (m) | 12:42AM 0.80 | 11:24AM 0.60 | 1:25AM 0.93 | 12:15PM 0.56 | 2:08AM 1.02 | 1:04PM 0.52 | 2:51AM 1.08 | 1:50PM 0.50 | 3:34AM 1.10 | 2:34PM 0.47 | 4:18AM 1.09 | 3:19PM 0.45 | 5:02AM 1.05 | 4:06PM 0.44 | ||||||||
Low Tide / height (m) | 6:45AM 0.42 | 6:03PM 0.04 | 7:52AM 0.38 | 6:41PM -0.01 | 8:48AM 0.34 | 7:21PM -0.05 | 9:40AM 0.32 | 8:01PM -0.07 | 10:29AM 0.31 | 8:43PM -0.06 | 11:18AM 0.31 | 9:24PM -0.02 | 12:09PM 0.31 | |||||||||
Monday 01 | Tuesday 02 | Wednesday 03 | Thursday 04 | Friday 05 | Saturday 06 | Sun 07 | ||||||||||||||||
| Sunrise | - | 6:41 | - | - | 6:41 | - | - | 6:41 | - | - | 6:43 | - | - | 6:43 | - | - | 6:43 | - | - | 6:45 | - | |
| Sunset | - | - | 5:40 | - | - | 5:40 | - | - | 5:40 | - | - | 5:42 | - | - | 5:42 | - | - | 5:42 | - | - | 5:42 | |
 |  | | | |  |  | | |  | | | | | | | | | | | | ||
Rain (mm) | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | |
| Temp. °C | 24 | 25 | 25 | 23 | 24 | 25 | 23 | 25 | 25 | 23 | 25 | 25 | 24 | 26 | 25 | 23 | 25 | 25 | 23 | 25 | 25 | |
| Feels °C (?) | 24 | 25 | 25 | 23 | 23 | 25 | 23 | 26 | 25 | 23 | 23 | 23 | 22 | 23 | 23 | 21 | 23 | 23 | 22 | 24 | 25 | |
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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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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 Waimanu Bay 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 Waimanu Bay Surf forecast
The above surf forecast table for Waimanu Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Waimanu Bay can be found by selecting the local surf guide option on the grey menu. Our Waimanu Bay 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 (Waimanu Bay) 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 Waimanu Bay 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.
Waimanu Bay is 74 km (46 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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