Heard Island Sea Conditions and Tide Table

Heard 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 03:34 AM and sunset is at 08:30 PM.

Days 1–3 Weather Summary

Moderate rain (total 11mm), heaviest on Sat night. Low air temperatures (max 5°C on Sat night, min 2°C on Fri night). Winds decreasing (gales from the W on Fri morning, fresh winds from the WNW by Sat morning).

Days 4–6 Weather Summary

Moderate rain (total 12mm) heaviest on Mon night, then becoming colder with a dusting of snow on Tue morning. Air temperatures will be slightly above freezing (max 3°C on Mon morning, min 2°C on Mon night). Winds decreasing (gales from the WNW on Mon morning, moderate winds from the W by Wed afternoon).

Days 7–9 Weather Summary

Light rain (total 8mm), mostly falling on Sat morning. Temperatures will be slightly above freezing (max 4°C on Fri night, min 2°C on Thu morning). Winds increasing (calm on Thu afternoon, strong winds from the WSW by Sat night).

Days 10–12 Weather Summary

Light rain (total 7mm), mostly falling on Tue morning. Temperatures will be slightly above freezing (max 4°C on Tue morning, min 2°C on Tue night). Winds increasing (fresh winds from the W on Sun morning, severe gales from the SW by Tue night).

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
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
night
Wave Height Map
High Tide
12:51PM1.11m
11:22PM1.06m
1:16PM1.11m
11:53PM1.05m
1:41PM1.10m
00:25AM1.05m
2:06PM1.10m
00:58AM1.06m
2:33PM1.10m
1:34AM1.09m
3:01PM1.10m
2:14AM1.11m
3:31PM1.11m
2:58AM1.13m
4:03PM1.13m
3:48AM1.13m
4:39PM1.14m
4:47AM1.12m
5:18PM1.16m
5:59AM1.10m
6:04PM1.16m
7:46AM1.09m
7:02PM1.16m
Low Tide
5:45AM0.45m
6:07PM0.82m
6:14AM0.36m
6:36PM0.77m
6:41AM0.28m
7:03PM0.72m
7:10AM0.22m
7:30PM0.67m
7:40AM0.18m
7:58PM0.64m
8:12AM0.19m
8:30PM0.62m
8:47AM0.24m
9:05PM0.61m
9:25AM0.34m
9:47PM0.61m
10:06AM0.47m
10:37PM0.63m
10:54AM0.61m
11:40PM0.63m
11:53AM0.75m
1:03AM0.61m
1:21PM0.86m
2:34AM0.55m
Wave
height (m) 
direction
period (s) 
5.5
WNW
12
6
W
12
4.5
WNW
12
3
WNW
12
3.5
WNW
12
5
WNW
12
5
WNW
13
5.5
WNW
13
6.5
WNW
14
6.5
W
15
5.5
W
15
5
W
13
3.5
W
12
2.5
W
11
1.9
W
12
1.6
WSW
12
1.5
WSW
12
1.8
W
11
1.7
W
10
1.6
W
10
1.4
WSW
10
1.7
W
10
1.8
W
10
1.9
W
11
1.9
W
11
2.1
W
12
2.1
W
11
2
W
10
2.4
WNW
8
3
W
10
3
WSW
10
2.5
WSW
10
2.2
WSW
10
3
NNW
7
4
WNW
10
5.5
W
12
cloud
part cloud
part cloud
cloud
light rain
mod rain
part cloud
cloud
light rain
light rain
light rain
light rain
light snow
rain showers
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
cloud
part cloud
cloud
mod rain
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
light rain
light rain
cloudy
some clouds
some clouds
cloudy
light rain
mod rain
some clouds
cloudy
light rain
light rain
light rain
light rain
light snow
rain shwrs
some clouds
clear
some clouds
some clouds
cloudy
some clouds
some clouds
cloudy
some clouds
cloudy
mod rain
rain shwrs
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
light rain
light rain
light rain
 km/h
75
W
70
WSW
50
WSW
35
NNW
60
N
45
WNW
55
NW
60
NW
65
WNW
60
WNW
55
W
60
W
45
WSW
30
WSW
25
WSW
25
W
20
W
35
WSW
15
WSW
5
NE
15
E
20
ENE
25
NE
30
NE
15
NNE
30
WSW
30
W
35
WNW
45
W
50
W
45
W
40
W
35
NW
55
NNW
60
WNW
75
SW
 mm 
2
6
3
2
2
5
2
1
7
1
4
1
2
max°C
4
3
3
3
3
5
4
4
4
3
3
3
2
2
2
2
3
3
2
3
3
2
3
4
4
4
4
3
3
3
3
3
3
4
4
3
Moonrise
3:10
3:54
4:53
6:04
7:22
8:42
10:03
11:23
12:44
2:08
3:36
5:09
Moonset
9:43
10:32
11:08
11:33
11:51
12:04
12:15
12:25
12:35
12:45
12:59
Sunrise
3:34
3:34
3:35
3:35
3:36
3:36
3:38
3:38
3:39
3:40
3:41
3:42
Sunset
8:30
8:30
8:31
8:31
8:32
8:32
8:34
8:34
8:34
8:34
8:34
8:34
Today's sea temperature in Heard Island is
3.4° C
(Statistics for 19 Dec 1981-2005 – mean: 2.2 max: 3.5 min: 1.3°C)
Issued (local time): 4 am Friday 19 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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