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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 7 am Thursday 19 Feb 2026 HSTForecast update in hr min s Forecast update imminent
Grandma's surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Grandma's sea temperature is
24.5° C
(Which is normal for this time of year)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 12PM is: 0.3m 13s primary swell from a Northwest direction and 0.4m 6s secondary swell from a Southeast direction (forecast issued at 07:00am February 19). An open ocean swell of 0.4m 10s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Feb) | 1ft (0.3m) | 13s |
| Afternoon (19 Feb) | 1ft (0.3m) | 12s |
| Evening (19 Feb) | 1ft (0.3m) | 12s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 19 | Friday 20 | Saturday 21 | Sun 22 | |||||||||||||||||||||
| 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 | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 27 | 27 | 26 | 24 | 23 | 23 | 23 | 22 | 21 | 8 | 13 | 19 | 13 | 13 | 5 | 3 | 9 | 17 | 17 | 20 | 21 | 33 | 33 | 31 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross- off | cross- off | cross- off | off | off | glass | glass | glass | glass | cross- on | cross- on | glass | off | off | glass | off | glass | glass | glass | glass | glass | off |
High Tide / height (m) | 5:14AM 0.60 | 5:58PM 0.49 | 5:46AM 0.53 | 6:50PM 0.53 | 6:20AM 0.45 | 7:50PM 0.57 | ||||||||||||||||||
Low Tide / height (m) | 11:34AM -0.02 | 11:36PM 0.08 | 12:05PM -0.03 | 12:36AM 0.13 | 12:40PM -0.03 | 1:48AM 0.17 | ||||||||||||||||||
Thursday 19 | Friday 20 | Saturday 21 | Sun 22 | |||||||||||||||||||||
| Sunrise | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:25 | - | - | - | - | - | - | - | 6:25 | - | - | - | - | - | - | - | 6:27 | - | - | - |
 |  | | | |  | | | | | | |  |  | | | | |  |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | 1 | 1 | 1 | - | - |
| Temp. °C | 22 | 22 | 24 | 25 | 23 | 23 | 22 | 22 | 22 | 22 | 24 | 25 | 24 | 23 | 22 | 22 | 21 | 22 | 24 | 24 | 23 | 23 | 22 | 22 |
| Feels °C (?) | 22 | 22 | 24 | 25 | 21 | 23 | 22 | 23 | 24 | 24 | 26 | 26 | 25 | 25 | 23 | 23 | 23 | 23 | 26 | 27 | 25 | 25 | 24 | 23 |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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 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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