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Mahai'ula Bay Surf Forecast
/ HAW – Big Island (60 breaks) / Hawaii (267 breaks) /
Mahai'ula Bay surfForecast / HAW – Big Island / USA
12 Day Weather and Surf, issued 7 pm Monday 12 May 2025 HST
Best Forecast Surf Conditions for Mahai'ula Bay this week:
The most powerful waves expected at Mahai'ula Bay in the next 12 days are 0.3m 17s and forecast to arrive on Tuesday (May 13) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 7s period and expected on Tuesday (May 13) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Tue 13th May) | 1ft (0.3m) 17s |
Table - best surf conditions forecast for Mahai'ula Bay over the next 12 days.
Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Sat 24 | |||||||||||||||||||||||||
| 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 | 7 | 12 | 12 | 16 | 3 | 3 | 11 | 15 | 15 | 8 | 7 | 20 | 16 | 3 | 11 | 16 | 16 | 10 | 2 | 6 | 2 | 17 | 9 | 16 | 8 | 15 | 13 | 19 | 9 | 3 | 16 | 12 | 3 | 3 | 3 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 0 | 34 | 23 | 0 | 42 | 2 | 4 | 0 | 34 | 35 | 28 | 0 | 0 | 0 | 3 | 19 | 0 | 0 | 16 | 1 | 4 | 1 | 0 | 8 | 0 | 14 | 0 | 0 | 0 | 14 | 6 | 0 | 86 | 5 | 1 | 1 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross | glass | cross | on | glass | cross | on | cross- off | on | cross | glass | on | on | glass | cross- on | cross | glass | cross- on | cross- on | cross | cross- on | cross- on | glass | on | glass | cross- on | cross- on | glass | on | cross- on | cross- on | glass | cross- on | cross- on |
High Tide / height (m) | 3:47AM 0.36 | 4:42PM 0.81 | 4:19AM 0.33 | 5:19PM 0.80 | 4:52AM 0.30 | 6:00PM 0.78 | 5:31AM 0.28 | 6:44PM 0.76 | 6:27AM 0.26 | 7:32PM 0.74 | 7:56AM 0.26 | 8:25PM 0.71 | 9:48AM 0.31 | 9:20PM 0.68 | 11:13AM 0.39 | 10:17PM 0.64 | 12:11PM 0.50 | 11:14PM 0.60 | 12:57PM 0.62 | 12:09AM 0.54 | 1:39PM 0.74 | 1:02AM 0.49 | 2:22PM 0.84 | |||||||||||||
Low Tide / height (m) | 11:08PM 0.18 | 9:21AM 0.06 | 11:52PM 0.18 | 9:49AM 0.07 | 12:39AM 0.19 | 10:19AM 0.08 | 1:34AM 0.20 | 10:52AM 0.10 | 2:35AM 0.20 | 11:30AM 0.14 | 3:35AM 0.19 | 12:21PM 0.19 | 4:23AM 0.17 | 1:41PM 0.25 | 5:01AM 0.14 | 3:33PM 0.30 | 5:34AM 0.10 | 5:21PM 0.31 | 6:06AM 0.07 | 6:49PM 0.28 | 6:38AM 0.03 | 8:02PM 0.24 | 7:12AM 0.01 | |||||||||||||
Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Sat 24 | |||||||||||||||||||||||||
| Sunrise | - | 5:48 | - | - | 5:48 | - | - | 5:48 | - | - | 5:48 | - | - | 5:47 | - | - | 5:47 | - | - | 5:47 | - | - | 5:46 | - | - | 5:46 | - | - | 5:46 | - | - | 5:46 | - | - | 5:45 | - |
| Sunset | - | - | 6:51 | - | - | 6:52 | - | - | 6:52 | - | - | 6:52 | - | - | 6:52 | - | - | 6:52 | - | - | 6:53 | - | - | 6:53 | - | - | 6:54 | - | - | 6:54 | - | - | 6:54 | - | - | 6:55 |
 |  | | | |  | | | |  | | |  | | |  |  | | | | | | | | | | |  | | | | | | | | | |
Rain (mm) | 1 | - | - | 4 | - | 2 | 3 | - | 1 | 1 | - | 1 | 3 | - | 2 | - | - | 2 | 2 | - | 2 | 2 | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 26 | 26 | 24 | 25 | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 24 | 25 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 24 | 25 | 26 | 24 | 25 | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 26 |
| Feels °C (?) | 26 | 28 | 28 | 26 | 26 | 26 | 26 | 27 | 25 | 26 | 27 | 26 | 25 | 26 | 28 | 25 | 28 | 26 | 27 | 28 | 26 | 26 | 27 | 26 | 25 | 26 | 27 | 26 | 27 | 26 | 26 | 28 | 28 | 28 | 28 | 27 |
Short Range Forecast: Moderate rain (total 11mm), heaviest on Mon night. Warm (max 26°C on Tue morning, min 23°C on Mon night). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Thu night. Warm (max 26°C on Fri morning, min 24°C on Thu night). Wind will be generally light. | Days 6-9 Weather Summary Light rain (total 7mm), mostly falling on Sun night. Warm (max 26°C on Tue afternoon, min 24°C on Sun night). Wind will be generally light. | Long Range Forecast: Some drizzle, heaviest during Sat night. Warm (max 26°C on Thu morning, min 24°C on Wed night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 Mahai'ula 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 Mahai'ula Bay Surf forecast
The above surf forecast table for Mahai'ula Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Mahai'ula Bay can be found by selecting the local surf guide option on the grey menu. Our Mahai'ula 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 (Mahai'ula 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 Mahai'ula 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.
Mahai'ula Bay is 100 km (62 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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