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Grandma's ratings
Quality on a good day: 1.0
Consistency of Surf: 3.0
Difficulty Level: 1.0
Crowds: 2.0

Overall: 2.4

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed
Grandma's surf break
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Reef
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Grandma's location mapGet alerts  temp

Grandma's Surf Forecast / HAW – Maui / USA

48hr Weather and Surf, issued 1 am Thursday 15 Apr 2021 HST
Forecast update in  hr  min  s 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 24.3 °C (Statistics for 15 Apr 1981-2005 - mean: 24.5 max: 25.3 min: 23.4 °C)
Icon breakBreak
Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
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 24.3 °C (Statistics for 15 Apr 1981-2005 - mean: 24.5 max: 25.3 min: 23.4 °C)

Eyeball surf reportRecent Eyeball Surf Reports for HAW - Maui

  1. weather stationWind Update Offshore wind has become cross-off at Grandma's (light winds from the ENE at BUOY-KLIH1 15 km from Grandma's).

    Grandma's
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1 h 19 min ago

Moderate
18 km/h
ENE
Cross-Off
Please reload the page to see if there are any updates.


How big are the waves at Grandma's today?

The current surf forecast for Grandma's at 3AM is: 0.6m 14s primary swell from a South-southwest direction (forecast issued at 01:00am April 15). An open ocean swell of 0.3m 6s is not directed at the surf break, a second open ocean swell of 0.9m 5s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.

Time (HST) & DateWave HeightWave Period
Morning (15 Apr)1.5ft (0.4m)13s
Afternoon (15 Apr)1.5ft (0.4m)13s
Evening (15 Apr)1ft (0.3m)24s

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

Updates in  hr  min  s Update imminent
Rating
(10 max)
Swell
Height Map
Wave Height (m) & direction (?)
Period(s) (?)
Wave
Graph
(?)Metric surfscale
Energy (?)
Wind
(km/h)
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
High Tide
/ height (m)
Low Tide
/ height (m)
Summary
Rain (mm)
Temp. °C
Chill °C (?)
Sunrise
Sunset
Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM
222111101102232222223222223333222222222222111101111111110001
T hawaiiunitedstates.htsgw.metric.6.cc23
T hawaiiunitedstates.htsgw.metric.12.cc23T hawaiiunitedstates.htsgw.metric.18.cc23T hawaiiunitedstates.htsgw.metric.30.cc23
T hawaiiunitedstates.htsgw.metric.36.cc23T hawaiiunitedstates.htsgw.metric.42.cc23T hawaiiunitedstates.htsgw.metric.54.cc23
T hawaiiunitedstates.htsgw.metric.60.cc23T hawaiiunitedstates.htsgw.metric.66.cc23T hawaiiunitedstates.htsgw.metric.78.cc23
T hawaiiunitedstates.htsgw.metric.84.cc23T hawaiiunitedstates.htsgw.metric.90.cc23T hawaiiunitedstates.htsgw.metric.102.cc23
T hawaiiunitedstates.htsgw.metric.108.cc23T hawaiiunitedstates.htsgw.metric.114.cc23T hawaiiunitedstates.htsgw.metric.126.cc23
T hawaiiunitedstates.htsgw.metric.132.cc23T hawaiiunitedstates.htsgw.metric.138.cc23T hawaiiunitedstates.htsgw.metric.150.cc23
T hawaiiunitedstates.htsgw.metric.156.cc23T hawaiiunitedstates.htsgw.metric.162.cc23T hawaiiunitedstates.htsgw.metric.174.cc23
T hawaiiunitedstates.htsgw.metric.180.cc23T hawaiiunitedstates.htsgw.metric.186.cc23T hawaiiunitedstates.htsgw.metric.198.cc23
0.6
SSW
0.6
SSW
0.5
SSW
0.4
SSW
0.4
SW
0.4
SSW
0.3
SW
0.3
SW
0.3
SW
0.4
SSW
0.3
SW
0.4
SW
0.4
SW
0.5
SW
0.4
SW
0.4
SW
0.4
SW
0.5
SW
0.5
SW
0.5
SW
0.6
SSW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.6
SSW
0.6
SSW
0.6
SSW
0.6
SSW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.5
SW
0.4
SSW
0.4
SSW
0.4
SW
0.4
SW
0.4
SW
0.4
SSW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.3
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
141414131513242424121522212121212020201919191918181818181717171616161616161616151515151514141414141414141313191313131218
16516311167596810298985234118162224162115101186186184251183173157154154207204202200140130127125124124124122119110106104848454535279515048464645594544433979
15
NNE
15
NE
15
NNE
10
NNE
5
N
5
NNE
20
NNE
20
NNE
15
NNE
15
NE
15
NNE
15
NNE
5
NNW
10
N
10
NNE
15
NNE
10
NE
15
NNE
15
NNE
15
NNE
10
NNE
15
NNE
20
NNE
20
NNE
15
NNE
15
NNE
10
NE
10
NNE
5
WNW
0
SE
5
NE
5
NNE
0
NE
5
NNE
5
N
0
E
5
WSW
10
SSW
5
ESE
5
SSE
0
N
5
NW
5
N
0
ENE
5
SSW
5
SSE
5
SE
5
ENE
5
NNW
5
N
0
NNW
5
NNE
5
SSW
0
SSE
0
SSE
0
SE
5
NW
0
ENE
5
SE
0
E
offoffoffoffcross-
off
offcross-
off
cross-
off
offoffoffoffglasscross-
off
cross-
off
offoffoffoffoffcross-
off
offcross-
off
offcross-
off
offoffoffglassglassglassglassglassglassglassglassglasscross-
on
glassglassglassglassglassglassglassglasscrossglassglassglassglassglasscross-
on
glassglassglassglassglassglassglass
5:52AM
0.30
6:46PM
0.62
6:38AM
0.26
7:37PM
0.61
7:45AM
0.22
8:36PM
0.61
9:16AM
0.21
9:39PM
0.61
10:40AM
0.23
10:41PM
0.61
11:44AM
0.27
11:36PM
0.62
12:34PM
0.32
12:26AM
0.62
12:29AM
0.11
11:25AM
0.02
1:27AM
0.12
12:03PM
0.05
2:37AM
0.13
12:47PM
0.07
3:56AM
0.12
1:43PM
0.09
5:07AM
0.10
2:53PM
0.11
5:57AM
0.07
4:09PM
0.11
6:34AM
0.04
5:22PM
0.10
7:06AM
0.01

Note: the tide data above is for Kihei, Maui (Hawaii) which is 9 km away. Surf properties and timing are calculated for Grandma's.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph
Offshore winds at Grandma's blow from the NE

Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM
clear
partially cloudy
partially cloudy
clear
clear
clear
clear
clear
partially cloudy
partially cloudy
partially cloudy
partially cloudy
partially cloudy
partially cloudy
partially cloudy
clear
clear
clear
clear
clear
clear
partially cloudy
clear
partially cloudy
partially cloudy
partially cloudy
partially cloudy
clear
clear
partially cloudy
partially cloudy
partially cloudy
clear
clear
clear
clear
clear
clear
partially cloudy
clear
clear
clear
partially cloudy
partially cloudy
partially cloudy
partially cloudy
partially cloudy
partially cloudy
clear
clear
clear
partially cloudy
clear
partially cloudy
partially cloudy
partially cloudy
partially cloudy
partially cloudy
partially cloudy
partially cloudy
clearsome cloudssome cloudsclearclearclearclearclearsome cloudssome cloudssome cloudssome cloudssome cloudssome cloudssome cloudsclearclearclearclearclearclearsome cloudsclearsome cloudssome cloudssome cloudssome cloudsclearclearsome cloudssome cloudssome cloudsclearclearclearclearclearclearsome cloudsclearclearclearsome cloudssome cloudssome cloudssome cloudssome cloudssome cloudsclearclearclearsome cloudsclearsome cloudssome cloudssome cloudssome cloudssome cloudssome cloudssome clouds
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222121222424242222222122232323212121202224242322222121222425252323232223252525242323232325252524232323232525252524232324
---6:07-------6:05-------6:05-------6:05-------6:03-------6:03-------6:01-------6:01
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