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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 Wednesday 03 Dec 2025 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
26.3° C
(Which is slightly warmer than usual)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 5AM is: 0.3m 11s primary swell from a West-northwest direction (forecast issued at 01:00am December 03). An open ocean swell of 0.6m 12s is not directed at the surf break, a second open ocean swell of 0.4m 5s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Dec) | 2ft (0.6m) | 12s |
| Afternoon (03 Dec) | 2ft (0.6m) | 12s |
| Evening (03 Dec) | 2ft (0.6m) | 12s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 03 | Thursday 04 | Friday 05 | ||||||||||||||||||||||
| 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) (?) | 9 | 12 | 11 | 10 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 14 | 16 | 9 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 14 | 124 | 22 | 20 | 118 | 122 | 124 | 120 | 144 | 116 | 114 | 137 | 146 | 176 | 293 | 293 | 261 | 253 | 299 | 299 | 308 | 496 | 13 | 23 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | glass | glass | glass | glass | cross- off | glass | glass | cross- off | glass | cross- on | cross | glass | glass | glass | cross- off | cross- off | cross- off | glass | cross- on | cross | cross- off |
High Tide / height (m) | 2:55AM 0.85 | 2:37PM 0.31 | 3:40AM 0.90 | 3:29PM 0.27 | 4:26AM 0.92 | 4:21PM 0.25 | ||||||||||||||||||
Low Tide / height (m) | 9:45AM 0.10 | 8:06PM -0.09 | 10:41AM 0.07 | 8:48PM -0.09 | 11:36AM 0.06 | |||||||||||||||||||
Wednesday 03 | Thursday 04 | Friday 05 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:47 | - | - | - | - | - | - | - | 6:48 | - | - | - | - | - | - | - | 6:48 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 5:44 | - | - | - | - | - | - | - | 5:44 | - | - | - | - | - | - | - | 5:44 | - |
 |  | |  | |  |  | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 23 | 24 | 25 | 25 | 25 | 25 | 24 | 23 | 23 | 24 | 25 | 26 | 26 | 25 | 24 | 24 | 23 | 24 | 26 | 27 | 26 | 26 |
| Feels °C (?) | 26 | 26 | 25 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 27 | 26 | 25 | 29 | 28 | 26 | 26 | 24 | 26 | 28 | 29 | 26 | 27 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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