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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 Thursday 27 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 11AM is: 1.0m 15s primary swell from a Northwest direction and 0.3m 12s secondary swell from a South-southeast direction (forecast issued at 07:00am November 27). An open ocean swell of 0.6m 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 (27 Nov) | 3.5ft (1.0m) | 15s |
| Afternoon (27 Nov) | 3.5ft (1.0m) | 15s |
| Evening (27 Nov) | 3ft (0.9m) | 15s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 27 | Friday 28 | Saturday 29 | Sun 30 | |||||||||||||||||||||
| 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) (?) | 15 | 15 | 15 | 15 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 11 | 11 | 13 | 12 | 12 | 12 | 22 | 20 | 19 | 18 | 18 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 459 | 465 | 465 | 453 | 29 | 30 | 322 | 309 | 305 | 297 | 280 | 253 | 241 | 37 | 37 | 132 | 114 | 68 | 67 | 166 | 474 | 808 | 1137 | 1373 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | glass | glass | cross- on | glass | glass | glass | cross- off | glass | cross- on | cross- off | cross | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass |
High Tide / height (m) | 9:18AM 0.63 | 11:02PM 0.38 | 10:11AM 0.58 | 11:54PM 0.48 | 11:05AM 0.52 | 12:41AM 0.59 | ||||||||||||||||||
Low Tide / height (m) | 2:05AM 0.19 | 4:23PM 0.05 | 3:30AM 0.22 | 4:59PM 0.02 | 4:59AM 0.23 | 5:33PM -0.01 | ||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sun 30 | |||||||||||||||||||||
| Sunrise | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 5:43 | - | - | - | - | - | - | - | 5:43 | - | - | - | - | - | - | - | 5:44 | - | - | - |
 |  | |  | |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 26 | 26 | 25 | 25 | 25 | 24 | 23 | 23 | 25 | 26 | 25 | 24 | 24 | 24 | 23 | 23 | 25 | 25 | 24 | 23 | 23 | 23 |
| Feels °C (?) | 27 | 26 | 28 | 28 | 27 | 27 | 28 | 26 | 24 | 25 | 26 | 27 | 26 | 26 | 27 | 27 | 26 | 25 | 27 | 27 | 26 | 25 | 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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