Charlestown Sea Conditions and Tide Table

Charlestown 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 05:43 AM and sunset is at 08:02 PM.

Days 1–3 Weather Summary

Some drizzle, heaviest during Fri morning. Warm air temperatures (max 20°C on Sun afternoon, min 15°C on Fri night). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Warm air temperatures (max 26°C on Wed morning, min 14°C on Mon night). Winds increasing (calm on Mon night, fresh winds from the S by Wed afternoon).

Days 7–9 Weather Summary

Mostly dry. Warm (max 22°C on Sat afternoon, min 16°C on Fri night). Wind will be generally light.

Days 10–12 Weather Summary

Light rain (total 5mm), mostly falling on Sun morning. Warm (max 29°C on Tue morning, min 17°C on Sun morning). Wind will be generally light.

Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
Tuesday
6
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
12:58PM1.40m
2:14AM1.17m
1:51PM1.30m
3:11AM1.26m
2:54PM1.21m
4:09AM1.36m
4:07PM1.14m
5:06AM1.47m
5:22PM1.09m
6:02AM1.59m
6:33PM1.09m
6:56AM1.70m
7:38PM1.10m
7:48AM1.80m
8:36PM1.12m
8:40AM1.85m
9:29PM1.14m
9:29AM1.87m
10:20PM1.15m
10:17AM1.83m
11:08PM1.16m
11:04AM1.75m
11:57PM1.17m
Low Tide
6:44AM0.52m
7:46PM0.18m
7:49AM0.55m
8:32PM0.20m
9:05AM0.54m
9:23PM0.22m
10:25AM0.48m
10:18PM0.25m
11:41AM0.37m
11:16PM0.27m
12:48PM0.24m
00:14AM0.27m
1:48PM0.12m
1:10AM0.26m
2:42PM0.02m
2:03AM0.25m
3:33PM-0.03m
2:54AM0.24m
4:22PM-0.05m
3:44AM0.25m
5:08PM-0.03m
5:52PM0.03m
Wave
height (m) 
direction
period (s) 
2.5
S
11
2.4
S
10
1.8
S
10
1.6
S
10
1.5
S
10
1.9
S
10
2.3
S
10
2.1
S
10
1.9
SSE
9
1.7
SSE
9
1.7
SSE
9
1.7
SSE
9
1.7
SE
9
1.8
SE
9
1.7
ESE
9
1.8
ESE
13
2.5
ESE
13
2.5
SE
10
2.5
SSE
12
2.5
SSE
12
2.5
SSE
11
2.1
SSE
10
1.9
SSE
10
1.6
SSE
10
1.5
SSE
9
1.5
SSE
9
1.5
SSE
9
1.3
SSE
9
1
SSE
8
1.2
SSE
8
1.1
SSE
8
1.3
SSE
8
1.2
ENE
6
0.7
SE
7
0.8
SE
7
1.2
ENE
7
light rain
cloud
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
cloud
cloud
part cloud
clear
cloud
part cloud
clear
clear
clear
part cloud
part cloud
light rain
rain showers
clear
clear
clear
part cloud
clear
clear
part cloud
light rain
cloudy
clear
some clouds
clear
some clouds
some clouds
clear
clear
clear
clear
clear
clear
clear
some clouds
clear
cloudy
cloudy
some clouds
clear
cloudy
some clouds
clear
clear
clear
some clouds
some clouds
light rain
rain shwrs
clear
clear
clear
some clouds
clear
clear
some clouds
 km/h
20
S
25
S
10
SSE
15
SSE
20
SE
15
SSW
20
S
20
SSE
10
S
15
SSE
15
SE
5
WNW
5
NE
25
ENE
5
WNW
25
S
25
SSE
10
SSE
20
S
25
S
15
S
15
S
15
SSE
5
ESE
10
ESE
25
ENE
15
ENE
10
NW
15
ENE
15
NE
10
ENE
25
ENE
10
NNE
10
S
15
E
20
SSW
 mm 
1
3
2
max°C
17
17
18
19
19
18
19
20
19
20
20
19
22
25
21
26
20
19
19
20
19
20
20
19
21
22
21
19
21
20
25
26
24
29
28
27
Moonrise
11:11
12:13
1:17
2:23
3:34
4:48
6:02
7:13
8:16
9:07
9:49
10:23
Moonset
12:01
12:28
12:57
1:29
2:07
2:53
3:49
4:55
6:08
7:22
8:33
Sunrise
5:43
5:43
5:45
5:45
5:46
5:47
5:48
5:48
5:48
5:50
5:50
5:50
Sunset
8:02
8:02
8:04
8:04
8:04
8:04
8:05
8:05
8:05
8:05
8:05
8:05
Today's sea temperature in Charlestown is
23.8° C
(Statistics for 26 Dec 1981-2005 – mean: 23.0 max: 25.0 min: 21.1°C)
Issued (local time): 4 am Friday 26 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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