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Grandma's Surf Forecast
/ HAW – Maui (46 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Grandma's surfForecast / HAW – Maui / USA
48hr Weather and Surf, issued 1 pm Tuesday 18 Nov 2025 HST
How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 9PM is: 0.3m 12s primary swell from a Southwest direction and 0.3m 6s secondary swell from a Southeast direction (forecast issued at 01:00pm November 18). An open ocean swell of 0.4m 16s is not directed at the surf break, a second open ocean swell of 1.2m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Nov) | 1.5ft (0.4m) | 13s |
| Afternoon (18 Nov) | 1ft (0.3m) | 17s |
| Evening (18 Nov) | 1ft (0.3m) | 12s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||||||||
| 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 16 | 12 | 12 | 15 | 15 | 14 | 14 | 14 | 14 | 11 | 14 | 14 | 13 | 16 | 16 | 15 | 13 | 13 | 13 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 28 | 27 | 41 | 23 | 37 | 77 | 104 | 102 | 93 | 89 | 147 | 23 | 280 | 264 | 261 | 50 | 47 | 43 | 144 | 144 | 144 | 68 | 62 | 85 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross | glass | glass | off | off | off | off | off | off | off | off | off | off | off | off | glass | glass | glass | off | off | cross- off | cross- off | off |
High Tide / height (m) | 2:40PM 0.37 | 3:37AM 0.76 | 3:19PM 0.33 | 4:12AM 0.77 | 3:58PM 0.30 | 4:49AM 0.78 | ||||||||||||||||||
Low Tide / height (m) | 9:33AM 0.16 | 8:11PM -0.00 | 10:18AM 0.15 | 8:42PM 0.00 | 11:02AM 0.14 | 9:15PM 0.01 | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:39 |
| Sunset | - | - | 5:44 | - | - | - | - | - | - | - | 5:44 | - | - | - | - | - | - | - | 5:44 | - | - | - | - | - |
 |  | |  | | |  | | |  | |  | |  | | |  | | | | | | | | |
Rain (mm) | - | 1 | 1 | - | - | - | - | - | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 25 | 26 | 25 | 24 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 27 | 27 | 26 | 24 | 24 | 24 | 24 | 24 |
| Feels °C (?) | 28 | 26 | 28 | 28 | 25 | 24 | 24 | 25 | 26 | 26 | 27 | 26 | 26 | 25 | 25 | 25 | 30 | 29 | 29 | 25 | 26 | 27 | 26 | 26 |
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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 Grandma's 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.
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