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Surf Forecasts:

Grandma's surf break

Grandma's surfForecast / HAW – Maui / USA

information circle48hr Weather and Surf, issued 7 am Thursday 29 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 12PM is: 0.3m 18s primary swell from a Northwest direction (forecast issued at 07:00am January 29). An open ocean swell of 0.4m 12s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (HST) & DateWave HeightWave Period
Morning (29 Jan)1ft (0.3m)13s
Afternoon (29 Jan)2ft (0.6m)16s
Evening (29 Jan)3ft (0.9m)15s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Thursday
29
Friday
30
Saturday
31
Sun
01
5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM
Rating
(10 max)
1
1
1
0
1
1
2
2
2
2
2
2
3
3
4
4
4
4
2
3
3
3
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.3
SSW
0.3
SSW
0.3
NW
0.6
NW
0.8
NW
0.9
NW
1
NW
1.1
NW
1
NW
1
NW
1.1
NW
1.1
NW
0.8
NW
1.1
NW
1.6
NW
1.7
NW
1.7
NW
1.6
NW
1.5
NW
1.4
NW
1.3
NW
1.3
NW
1.1
NW
1.1
NW
Period(s) (?)131318161615151415151414181717171616161515141414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)34334916729937542145341842944745937573714711586149213141055927685648507416
Wind
(km/h)
5
N
5
NNE
5
WSW
10
SW
5
W
5
WNW
5
NNW
5
N
5
N
5
NNE
5
W
10
NW
10
NNE
20
NNE
25
NNE
20
NNE
20
NNE
20
NNE
15
NNE
15
NNE
10
NNE
10
NNE
5
NNE
0
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassoffglassoncross-
on		cross-
on		glassglasscross-
off		glassglasscrosscross-
off		offoffoffoffoffcross-
off		cross-
off		cross-
off		cross-
off		glassglass
High Tide
/ height (m)
1:35PM
0.23
2:27AM
0.84
2:30PM
0.26
3:11AM
0.85
3:19PM
0.29
Low Tide
/ height (m)
9:03AM
0.08
6:44PM
-0.06
9:41AM
0.05
7:38PM
-0.07
10:15AM
0.02
8:29PM
-0.07
Thursday
29
Friday
30
Saturday
31
Sun
01
Sunrise-7:03-------7:03-------7:03------
Sunset----6:15-------6:15-------6:15---
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
rain showers
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
Rain (mm)
-------------11---------
Temp. °C232326252625242424242525252322222122242424232322
Feels °C (?)262528262827262626262727262321212122242425242625
  • 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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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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