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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 Tuesday 07 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
24.2° 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 4AM is: 0.5m 19s primary swell from a South direction and 0.3m 15s secondary swell from a South-southwest direction (forecast issued at 01:00am April 07). An open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be glassy and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 Apr) | 1.5ft (0.4m) | 19s |
| Afternoon (07 Apr) | 2ft (0.6m) | 15s |
| Evening (07 Apr) | 2.5ft (0.7m) | 17s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 07 | Wednesday 08 | Thursday 09 | ||||||||||||||||||||||
| 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) (?) | 17 | 18 | 19 | 19 | 19 | 15 | 17 | 17 | 18 | 18 | 14 | 14 | 16 | 16 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 15 | 16 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 157 | 169 | 123 | 125 | 123 | 174 | 300 | 315 | 158 | 158 | 147 | 201 | 250 | 256 | 263 | 266 | 225 | 215 | 215 | 215 | 158 | 243 | 242 | 138 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | off | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | cross- on | cross- on | cross- on | glass | glass | on | cross- on | cross- on |
High Tide / height (m) | 7:23AM 0.23 | 8:37PM 0.60 | 8:55AM 0.21 | 9:41PM 0.60 | 10:26AM 0.22 | |||||||||||||||||||
Low Tide / height (m) | 2:36AM 0.15 | 12:42PM 0.05 | 4:01AM 0.15 | 1:38PM 0.08 | 5:17AM 0.12 | 2:47PM 0.10 | ||||||||||||||||||
Tuesday 07 | Wednesday 08 | Thursday 09 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:11 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:42 | - | - | - | - | - | - | - | 6:42 | - | - | - | - | - | - | - | 6:43 | - |
 |  | |  |  |  | |  | | | | | |  |  |  | | |  | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | 2 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | - | - | - | 1 | - | - | - | - | - |
| Temp. °C | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 25 | 24 | 23 | 23 | 23 | 23 | 24 | 23 | 23 |
| Feels °C (?) | 25 | 25 | 25 | 24 | 25 | 26 | 26 | 27 | 25 | 26 | 26 | 26 | 26 | 27 | 26 | 28 | 25 | 23 | 25 | 26 | 26 | 26 | 21 | 21 |
- 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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