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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 Friday 28 Nov 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
26.0° 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 1PM is: 0.9m 13s primary swell from a Northwest direction and 0.4m 11s secondary swell from a South-southeast direction (forecast issued at 07:00am November 28). An open ocean swell of 0.9m 6s 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 (28 Nov) | 1.5ft (0.4m) | 12s |
| Afternoon (28 Nov) | 3ft (0.9m) | 13s |
| Evening (28 Nov) | 1ft (0.3m) | 14s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 28 | Saturday 29 | Sunday 30 | Mon 01 | |||||||||||||||||||||
| 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) (?) | 14 | 12 | 14 | 13 | 13 | 14 | 11 | 13 | 10 | 12 | 12 | 22 | 20 | 19 | 18 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 305 | 55 | 280 | 253 | 241 | 32 | 23 | 132 | 34 | 67 | 67 | 118 | 464 | 791 | 1112 | 1213 | 1358 | 1327 | 1312 | 1282 | 1180 | 1137 | 1017 | 1004 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | cross- off | glass | glass | glass | glass | cross | glass | glass | glass | glass |
High Tide / height (m) | 10:11AM 0.58 | 11:54PM 0.48 | 11:05AM 0.52 | 12:41AM 0.59 | 11:59AM 0.46 | 1:26AM 0.69 | ||||||||||||||||||
Low Tide / height (m) | 3:30AM 0.22 | 4:59PM 0.02 | 4:59AM 0.23 | 5:33PM -0.01 | 6:23AM 0.21 | 6:09PM -0.04 | ||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Mon 01 | |||||||||||||||||||||
| Sunrise | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 5:43 | - | - | - | - | - | - | - | 5:44 | - | - | - | - | - | - | - | 5:44 | - | - | - |
 |  | | | |  | | | | |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 26 | 26 | 26 | 25 | 24 | 24 | 23 | 23 | 25 | 25 | 24 | 24 | 23 | 23 | 22 | 23 | 25 | 25 | 25 | 24 | 23 | 23 |
| Feels °C (?) | 27 | 27 | 28 | 28 | 29 | 28 | 27 | 27 | 26 | 25 | 27 | 27 | 26 | 26 | 24 | 25 | 23 | 25 | 26 | 26 | 27 | 27 | 25 | 25 |
- 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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