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Surf Forecasts:

Grandma's surf break

Grandma's surfForecast / HAW – Maui / USA

information circle48hr Weather and Surf, issued 7 pm Friday 16 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
25.5° C
 (Which is 1.1°C warmer than normal for this time of year)

How big are the waves at Grandma's today?

The current surf forecast for Grandma's at 10PM is: 0.2m 10s primary swell from a South-southeast direction (forecast issued at 07:00pm January 16). An open ocean swell of 1.4m 13s is not directed at the surf break, a second open ocean swell of 1.0m 5s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (HST) & DateWave HeightWave Period
Morning (16 Jan)--
Afternoon (16 Jan)1.5ft (0.4m)15s
Evening (16 Jan)1ft (0.3m)9s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Friday
16
Saturday
17
Sunday
18
Monday
19
5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
1
3
2
2
2
2
2
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.2
SSW
0.3
WNW
0.2
SSE
0.2
SSE
0.2
S
0.1
SW
0.3
WNW
0.4
NW
0.4
NW
0.4
NW
0.4
NW
0.4
NW
0.3
NW
0.3
NW
0.8
NW
1
NW
1.1
NW
1.1
NW
1.1
NW
1
NW
0.9
NW
0.8
NW
0.8
NW
0.6
NW
Period(s) (?)14910101014141413131313132019181716161514141414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)18151011983946464444442761418600728560546441350293245155
Wind
(km/h)
25
NNE
25
NNE
25
NE
20
NE
25
NE
25
NE
15
NE
20
NE
20
NNE
15
NE
15
NE
15
NE
10
ENE
10
ENE
0
S
5
SSW
5
WSW
5
E
5
E
5
N
5
NE
5
E
5
SE
5
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffoffoffoffoffoffoffoffoffoffoffglassonglassglassglassglassglasscross-
off		glasscross-
off
High Tide
/ height (m)
2:51PM
0.26
3:36AM
0.78
3:33PM
0.27
4:10AM
0.79
4:12PM
0.28
4:43AM
0.77
Low Tide
/ height (m)
7:59PM
-0.04
10:37AM
0.08
8:40PM
-0.04
11:04AM
0.06
9:20PM
-0.03
11:32AM
0.05
Friday
16
Saturday
17
Sunday
18
Monday
19
Sunrise-----7:05-------7:05-------7:05--
Sunset6:06-------6:07-------6:07-------
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
Rain (mm)
------------------------
Temp. °C212020202020232423212120202023242323232222222424
Feels °C (?)161616171616202120181918181923242323232323222424
  • 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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