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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 am Friday 10 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
24.4° 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 5AM is: 0.6m 14s primary swell from a South direction and 0.3m 11s secondary swell from a Northwest direction, 1.2m 6s secondary swell from a South direction (forecast issued at 01:00am April 10). The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Apr) | 2ft (0.6m) | 14s |
| Afternoon (10 Apr) | 2ft (0.6m) | 14s |
| Evening (10 Apr) | 2ft (0.6m) | 14s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 10 | Saturday 11 | Sunday 12 | ||||||||||||||||||||||
| 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 | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 11 | 11 | 13 | 15 | 15 | 14 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 92 | 92 | 134 | 142 | 146 | 148 | 148 | 150 | 148 | 146 | 126 | 87 | 87 | 87 | 87 | 86 | 85 | 77 | 60 | 53 | 51 | 48 | 64 | 63 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | glass | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- off | off |
High Tide / height (m) | 10:43PM 0.60 | 11:35AM 0.26 | 11:37PM 0.61 | 12:27PM 0.31 | 12:25AM 0.60 | 1:11PM 0.38 | ||||||||||||||||||
Low Tide / height (m) | 6:05AM 0.10 | 4:03PM 0.11 | 6:38AM 0.07 | 5:15PM 0.10 | 7:06AM 0.04 | 6:19PM 0.09 | ||||||||||||||||||
Friday 10 | Saturday 11 | Sunday 12 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:09 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:44 | - |
 |  | |  | | | | |  | | |  |  |  | |  | | |  | | | | | | |
Rain (mm) | 1 | - | - | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | - | - | 1 | - | 1 | 1 | 1 | - | 1 | 2 | 2 | 4 | 2 |
| Temp. °C | 24 | 25 | 25 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 23 | 24 | 24 | 23 | 22 | 20 |
| Feels °C (?) | 25 | 24 | 26 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 26 | 27 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 26 | 23 | 16 |
- Map Icons:
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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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