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 — and sunset is at 06:51 PM.

Days 1–4 Weather Summary

Heavy rain (total 36mm), heaviest during Mon morning. Icy conditions (max 13°C on Mon night, min -2°C on Sat night). Winds increasing (light winds from the N on Sun morning, strong winds from the S by Mon night).

Days 5–7 Weather Summary

Mostly dry. Icy conditions (max 3°C on Tue afternoon, min -3°C on Tue night). Winds decreasing (fresh winds from the WSW on Tue afternoon, calm by Thu night).

Days 8–10 Weather Summary

Mostly dry. Freeze-thaw conditions (max 11°C on Sat afternoon, min -1°C on Sun night). Wind will be generally light.

Days 11–13 Weather Summary

Mostly dry. Freeze-thaw conditions (max 7°C on Tue afternoon, min -4°C on Wed night). Wind will be generally light.

Sat
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
Wave Height Map
High Tide
5:31PM0.94m
5:54AM1.13m
6:18PM1.04m
6:38AM1.19m
7:01PM1.15m
7:20AM1.24m
7:42PM1.25m
8:01AM1.27m
8:22PM1.35m
8:42AM1.29m
9:04PM1.42m
9:23AM1.27m
9:47PM1.45m
10:07AM1.24m
10:33PM1.45m
10:53AM1.18m
11:22PM1.41m
11:44AM1.10m
00:18AM1.34m
12:43PM1.03m
1:22AM1.27m
1:51PM0.98m
2:34AM1.21m
3:09PM0.97m
3:49AM1.19m
4:25PM1.01m
4:58AM1.19m
5:29PM1.08m
Low Tide
11:32AM0.36m
11:31PM0.32m
12:16PM0.28m
00:21AM0.24m
12:55PM0.20m
1:08AM0.16m
1:32PM0.12m
1:52AM0.09m
2:09PM0.06m
2:36AM0.03m
2:48PM0.01m
3:20AM0.01m
3:27PM-0.00m
4:06AM0.01m
4:10PM0.01m
4:55AM0.05m
4:55PM0.05m
5:48AM0.12m
5:46PM0.11m
6:47AM0.20m
6:45PM0.18m
7:55AM0.26m
7:55PM0.24m
9:09AM0.29m
9:14PM0.26m
10:21AM0.27m
10:30PM0.25m
11:22AM0.23m
Wave
height (m) 
direction
period (s) 
1.4
W
4
0.6
SW
4
0.3
S
7
0.4
SSE
4
1
SE
4
1.8
SSE
8
2.3
SSE
9
2.5
SSE
10
1.8
SSE
10
1.6
SSE
10
1.1
SSE
10
0.7
SSE
9
0.7
SSE
9
0.6
SSE
9
0.6
SSE
9
0.6
SSE
8
0.5
SE
8
0.5
SE
8
0.6
SE
8
0.6
SE
9
0.6
SE
9
0.6
SE
9
0.6
SE
10
0.7
SSE
10
0.6
SSE
10
0.6
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
8
0.4
NNE
3
0.2
SSE
8
0.4
NNE
4
0.5
N
3
0.5
NNW
3
0.6
N
3
0.2
NNE
2
0.5
E
3
1
E
4
1.6
E
6
1.7
ENE
6
1.1
SE
10
0.8
ESE
11
0.8
ESE
11
0.7
ESE
11
0.3
ESE
11
0.3
ESE
11
0.4
ESE
11
part cloud
clear
part cloud
part cloud
rain showers
mod rain
heavy rain
rain showers
clear
part cloud
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
cloud
part cloud
clear
cloud
part cloud
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
cloud
part cloud
cloud
light snow
light snow
part cloud
part cloud
clear
clear
clear
clear
clear
some clouds
clear
some clouds
some clouds
rain shwrs
mod rain
heavy rain
rain shwrs
clear
some clouds
clear
some clouds
cloudy
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
clear
cloudy
some clouds
clear
cloudy
some clouds
some clouds
cloudy
cloudy
some clouds
clear
clear
clear
clear
clear
clear
cloudy
some clouds
cloudy
light snow
light snow
some clouds
some clouds
clear
clear
clear
clear
clear
 km/h
35
W
20
WNW
10
E
20
SE
30
ESE
35
S
40
S
30
WSW
30
W
30
W
25
W
10
W
15
SSW
10
SSE
10
SE
10
SE
5
E
10
SE
10
S
5
W
10
NW
10
NNW
10
NNE
10
E
10
WSW
20
NNE
10
N
10
WSW
15
N
20
NNW
15
NNW
15
NNW
25
NNW
25
NNW
20
N
15
NE
20
E
25
ENE
35
NE
35
NNE
25
N
25
NNW
25
NNW
20
NNW
10
N
10
SW
15
WSW
 mm 
4
10
13
9
max°C
7
4
1
2
7
11
12
13
0
3
0
-1
0
0
1
2
1
3
4
3
7
11
7
3
4
3
2
4
2
2
7
3
1
5
1
-1
3
1
1
1
0
5
8
4
5
9
7
Moonrise
5:21
5:48
6:12
6:34
6:56
7:19
7:46
8:18
8:58
9:49
10:51
12:02
1:16
2:30
3:42
Moonset
3:14
4:24
5:34
6:46
7:59
9:15
10:33
11:53
1:09
2:17
3:13
3:57
4:31
4:59
Sunrise
6:58
6:56
6:54
6:54
6:52
6:50
6:48
6:47
6:45
6:43
6:41
6:39
6:37
6:37
6:35
Sunset
6:51
6:52
6:52
6:53
6:55
6:57
6:58
6:59
7:00
7:00
7:01
7:02
7:04
7:05
7:06
7:07
Today's sea temperature in Charlestown is
3.3° C
(Statistics for 14 Mar 1981-2005 – mean: 4.2 max: 6.2 min: 2.3°C)
Issued (local time): 1 pm Saturday 14 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest