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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 Saturday 04 Apr 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
24.0° 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 5PM is: 0.4m 18s primary swell from a Southwest direction and 0.3m 15s secondary swell from a Southwest direction (forecast issued at 01:00pm April 04). An open ocean swell of 0.4m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 Apr) | 1ft (0.3m) | 11s |
| Afternoon (04 Apr) | 1ft (0.3m) | 15s |
| Evening (04 Apr) | 1.5ft (0.4m) | 18s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 04 | Sunday 05 | Monday 06 | Tuesday 07 | |||||||||||||||||||||
| 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) (?) | 15 | 15 | 18 | 18 | 18 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 15 | 17 | 16 | 16 | 16 | 17 | 18 | 19 | 19 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 37 | 35 | 82 | 81 | 80 | 80 | 61 | 47 | 68 | 67 | 66 | 66 | 102 | 103 | 56 | 57 | 58 | 87 | 86 | 103 | 157 | 169 | 123 | 125 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | off | off | off | glass | glass | glass | off | off | off | glass | off | off | glass | glass | glass | cross- off | cross- off | glass | cross- off | off |
High Tide / height (m) | 6:00PM 0.64 | 5:39AM 0.30 | 6:45PM 0.63 | 6:21AM 0.26 | 7:37PM 0.62 | 7:23AM 0.23 | ||||||||||||||||||
Low Tide / height (m) | 10:45AM -0.02 | 12:26AM 0.12 | 11:18AM 0.00 | 1:25AM 0.14 | 11:56AM 0.03 | 2:36AM 0.15 | ||||||||||||||||||
Saturday 04 | Sunday 05 | Monday 06 | Tuesday 07 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:13 |
| Sunset | - | - | 6:40 | - | - | - | - | - | - | - | 6:42 | - | - | - | - | - | - | - | 6:42 | - | - | - | - | - |
 | | |  | | | | | |  | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 24 | 23 | 21 | 20 | 20 | 20 | 21 | 24 | 24 | 23 | 22 | 22 | 22 | 21 | 22 | 24 | 24 | 24 | 23 | 23 | 22 | 22 | 22 |
| Feels °C (?) | 21 | 23 | 21 | 19 | 18 | 19 | 21 | 22 | 25 | 25 | 23 | 22 | 23 | 23 | 22 | 23 | 26 | 26 | 26 | 24 | 25 | 24 | 23 | 22 |
- 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 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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