Mcmaster Island Sea Conditions and Tide Table

Mcmaster Island Sea Conditions table showing wave height, swell direction and period.

High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at — and sunset is at —.

Days 1–4 Weather Summary

Heavy rain (total 20mm), heaviest during Fri night. Icy conditions (max 13°C on Fri night, min -3°C on Sat morning). Winds decreasing (gales from the S on Fri night, light winds from the WNW by Sat night).

Days 5–7 Weather Summary

A dusting of new snow. Air temperatures will be below freezing (max -1°C on Wed afternoon, min -9°C on Mon night). Winds decreasing (strong winds from the NW on Mon morning, light winds from the NNW by Tue night).

Days 8–10 Weather Summary

A light covering of new snow, mostly falling on Fri afternoon. Freeze-thaw conditions (max 4°C on Thu afternoon, min -4°C on Wed night). Winds increasing (light winds from the W on Wed night, fresh winds from the ENE by Fri afternoon).

Days 11–13 Weather Summary

Mostly dry. Temperatures will be below freezing (max -3°C on Tue afternoon, min -9°C on Sun morning). Winds decreasing (fresh winds from the NNW on Sat night, light winds from the NW by Mon morning).

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
Wave Height Map
High Tide
11:03PM5.83m
11:18AM6.39m
11:43PM5.91m
11:59AM6.43m
00:24AM6.00m
12:40PM6.45m
1:04AM6.09m
1:20PM6.45m
1:45AM6.17m
2:00PM6.44m
2:27AM6.24m
2:43PM6.43m
3:10AM6.31m
3:27PM6.42m
3:56AM6.38m
4:15PM6.39m
4:46AM6.45m
5:09PM6.35m
5:40AM6.53m
6:08PM6.32m
6:39AM6.65m
7:10PM6.33m
7:40AM6.80m
Low Tide
5:01PM1.22m
5:14AM1.66m
5:42PM1.14m
5:57AM1.59m
6:22PM1.09m
6:38AM1.54m
7:01PM1.08m
7:19AM1.51m
7:41PM1.08m
7:59AM1.50m
8:21PM1.10m
8:41AM1.49m
9:04PM1.12m
9:24AM1.48m
9:48PM1.14m
10:11AM1.45m
10:36PM1.16m
11:03AM1.40m
11:29PM1.17m
12:00PM1.31m
00:26AM1.16m
1:03PM1.15m
1:27AM1.11m
2:08PM0.89m
Wave
height (m) 
direction
period (s) 
0.6
S
3
0.8
S
4
1.5
SSE
5
0.7
SW
3
0.7
W
4
0.3
WNW
3
0.3
S
2
0.6
SSW
4
0.6
WSW
3
0.5
W
3
0.7
NW
4
0.8
NNW
4
0.4
NW
3
0.2
W
2
0.1
W
2
0
W
1
0
W
1
0.1
N
2
0.1
N
2
0.2
SSW
2
0.3
SW
2
0.1
NE
2
0.5
ENE
3
0.4
NE
3
0.2
N
2
0.1
NW
2
0.5
N
3
0.5
N
3
0.5
N
3
0.4
NNW
3
0.2
N
2
0
E
2
0
W
1
0.2
NNW
2
0.2
NNW
2
0.1
NW
2
part cloud
part cloud
mod rain
rain showers
part cloud
clear
part cloud
light rain
part cloud
part cloud
part cloud
clear
clear
part cloud
light snow
light snow
cloud
part cloud
part cloud
cloud
cloud
cloud
light snow
light snow
cloud
part cloud
part cloud
clear
clear
clear
clear
cloud
cloud
part cloud
clear
part cloud
some clouds
some clouds
mod rain
rain shwrs
some clouds
clear
some clouds
light rain
some clouds
some clouds
some clouds
clear
clear
some clouds
light snow
light snow
cloudy
some clouds
some clouds
cloudy
cloudy
cloudy
light snow
light snow
cloudy
some clouds
some clouds
clear
clear
clear
clear
cloudy
cloudy
some clouds
clear
some clouds
 km/h
30
SSW
40
S
60
S
40
WSW
40
WNW
25
WNW
25
SSW
30
SW
40
WNW
35
WNW
40
NW
35
NW
25
WNW
15
W
10
WSW
10
N
10
NW
10
NNW
10
NW
20
SW
20
WSW
15
ENE
30
ENE
25
NE
15
N
20
NW
30
NNW
30
NNW
30
NNW
25
NNW
15
NNW
10
WNW
10
NW
20
NW
15
NW
10
W
 mm 
6
13
1
max°C
8
10
12
13
-3
-1
4
5
5
-2
-6
-6
-7
-5
-4
-3
-3
-1
-2
1
4
1
1
1
0
0
1
-5
-8
-6
-8
-7
-4
-5
-7
-3
Moonrise
8:06
8:57
9:40
10:15
10:42
11:05
11:25
11:43
12:01
12:21
12:44
1:13
Moonset
4:02
4:58
6:01
7:10
8:21
9:31
10:42
11:54
1:07
2:25
3:46
Sunrise
8:00
8:02
8:03
8:03
8:03
8:03
8:03
8:04
8:04
8:04
8:04
8:04
Sunset
4:46
4:47
4:47
4:49
4:49
4:50
4:51
4:51
4:52
4:52
4:53
4:53
Today's sea temperature in Mcmaster Island is
6.5° C
(Statistics for 18 Dec 1981-2005 – mean: 6.4 max: 7.7 min: 4.9°C)
Issued (local time): 7 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest