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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 Wednesday 22 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
24.8° 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: 0.5m 14s primary swell from a West direction and 0.5m 14s secondary swell from a Northwest direction (forecast issued at 07:00am April 22). An open ocean swell of 0.6m 8s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Apr) | 1.5ft (0.5m) | 15s |
| Afternoon (22 Apr) | 1.5ft (0.5m) | 14s |
| Evening (22 Apr) | 1.5ft (0.5m) | 13s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 26°C on Thu morning, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Sat 25 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 14 | NW 15 | W 14 | W 14 | W 14 | W 13 | W 13 | NW 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 12 | WNW 15 | SW 14 | SW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | SW 14 | |
100 | 104 | 100 | 97 | 91 | 88 | 87 | 85 | 84 | 84 | 52 | 52 | 51 | 51 | 49 | 42 | 49 | 46 | 58 | 57 | 57 | 55 | 50 | 29 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | glassy | off | cross-off | cross-off | off | off | cross-off | cross-off | glassy | cross-off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 8:38AM0.20m | 9:11PM0.69m | 10:07AM0.23m | 10:15PM0.66m | 11:22AM0.29m | 11:14PM0.63m | ||||||||||||||||||
Low Tide | 3:38AM0.08m | 1:15PM0.04m | 4:48AM0.06m | 2:29PM0.08m | 5:40AM0.04m | 3:53PM0.12m | ||||||||||||||||||
 |  | |  | | | | | | | | | | | |  | | | | | | | | | |
 | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | 6:00 |
 | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:47 | — | — | 6:47 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 24 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 24 | 26 | 26 | 25 | 23 | 23 | 23 | 22 | 23 | 24 | 25 | 24 | 23 | 23 | 23 |
26 | 27 | 28 | 28 | 27 | 25 | 23 | 24 | 25 | 25 | 27 | 28 | 25 | 22 | 23 | 23 | 22 | 23 | 24 | 25 | 23 | 22 | 22 | 23 | |
Swell 1 Height (m) Direction Period (s) | W 14 | W 14 | W 14 | W 14 | W 14 | W 13 | W 13 | NW 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 12 | WNW 15 | WNW 15 | SW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 |
 kJ | 100 | 100 | 100 | 97 | 91 | 88 | 87 | 83 | 84 | 84 | 52 | 52 | 51 | 51 | 49 | 42 | 42 | 46 | 58 | 57 | 57 | 55 | 50 | 28 |
Swell 2 Height (m) Direction Period (s) | NNE 14 | NNE 14 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | W 13 | NW 13 | NNW 12 | NNW 12 | NW 12 | NW 12 | NW 12 | NW 12 | W 12 | W 12 | W 12 | NNE 10 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SW 14 |
| kJ | 81 | 76 | 100 | 92 | 88 | 85 | 84 | 85 | 80 | 61 | 59 | 37 | 37 | 36 | 35 | 25 | 25 | 25 | 9 | 17 | 17 | 17 | 27 | 29 |
Swell 3 Height (m) Direction Period (s) | SW 13 | NW 15 | NNE 13 | NNE 13 | NNE 13 | NNE 12 | NNE 12 | NNE 12 | NNE 12 | NNE 11 | NNE 11 | NNE 11 | WNW 16 | WNW 16 | NNE 10 | NW 12 | SW 14 | WNW 14 | SSW 13 | NNE 9 | NNW 11 | SSW 16 | NNE 9 | NNW 12 |
| kJ | 42 | 104 | 69 | 67 | 93 | 57 | 56 | 55 | 44 | 40 | 23 | 23 | 50 | 50 | 20 | 35 | 49 | 41 | 17 | 8 | 12 | 25 | 15 | 15 |
Wind waves Height (m) Direction Period (s) | E 4 | ESE 4 | E 8 | — | — | ESE 4 | E 4 | E 4 | E 4 | E 4 | E 4 | NNE 4 | NNE 11 | NNE 4 | NNE 4 | NNE 4 | NNE 4 | NNE 3 | NNE 4 | NNE 4 | N 4 | NNE 4 | NNE 4 | NNE 9 |
| kJ | 7 | 5 | 41 | — | — | 5 | 11 | 21 | 22 | 11 | 7 | 1 | 117 | 22 | 13 | 8 | 5 | 7 | 5 | 6 | 13 | 21 | 8 | 43 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 12 | 14 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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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
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