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Surf Forecasts:

Grandma's surf break

Grandma's surfForecast / HAW – Maui / USA

information circle48hr Weather and Surf, issued 1 am Monday 19 Jan 2026 HST
Forecast 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
25.2° C
 (Which is slightly warmer than usual)

How big are the waves at Grandma's today?

The current surf forecast for Grandma's at 11AM is: 0.8m 14s primary swell from a Northwest direction (forecast issued at 01:00am January 19). An open ocean swell of 0.4m 6s is not directed at the surf break, a second open ocean swell of 1.7m 6s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (HST) & DateWave HeightWave Period
Morning (19 Jan)2.5ft (0.8m)14s
Afternoon (19 Jan)2.5ft (0.7m)14s
Evening (19 Jan)2ft (0.6m)13s

Table - waves today at Grandma's. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Monday
19
Tuesday
20
Wednesday
21
11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM
Rating
(10 max)
2
2
2
2
1
0
1
1
1
1
1
1
0
0
0
1
1
1
1
1
1
2
2
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
NW
1.1
NW
0.9
NW
0.9
NW
0.8
NW
0.7
NW
0.6
NW
0.6
NW
0.6
NW
0.5
NW
0.4
NW
0.3
NW
0.4
NW
0.4
NW
0.6
NW
0.6
NW
0.6
NW
0.6
NW
0.6
NW
0.6
NW
0.5
NW
0.7
NW
0.8
NW
0.7
NW
Period(s) (?)161514141414131313131218161616151414131316161515
Wave
Graph
(?)Metric surfscale
Energy kJ (?)6284993503462451891401091087853539491151134167160111108130248269217
Wind
(km/h)
5
E
5
NE
5
E
5
NE
5
SW
10
SE
5
SSE
5
N
5
NNW
5
SSE
5
ENE
5
E
10
S
15
S
10
SSW
5
SSE
5
ESE
5
ENE
5
ENE
5
ENE
10
N
10
NNW
15
NNE
15
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassoffcross-
off		offglasscrossglassglassglassglassglasscross-
off		cross-
on		cross-
on		onglassglassglassoffoffcross-
off		cross-
off		offoff
High Tide
/ height (m)
4:43AM
0.77
4:53PM
0.30
5:14AM
0.74
5:37PM
0.32
5:46AM
0.69
6:25PM
0.36
Low Tide
/ height (m)
9:20PM
-0.03
11:32AM
0.05
10:01PM
-0.01
11:59AM
0.03
10:45PM
0.02
12:28PM
0.02
Monday
19
Tuesday
20
Wednesday
21
Sunrise---7:05-------7:05-------7:05----
Sunset------6:07-------6:08-------6:08-
part cloud
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
cloud
cloud
Rain (mm)
------------------------
Temp. °C232322212424242323232322242323232323222224242322
Feels °C (?)232322212423252424242422242223242524222223242221
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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.

View detailed surf forecast for Grandma's at:
surf-forecast.com

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