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 06:58 AM and sunset is at 04:15 PM.

Days 1–3 Weather Summary

Mostly dry. Icy conditions (max 4°C on Tue afternoon, min -6°C on Mon night). Winds decreasing (fresh winds from the NNW on Sun night, calm by Mon night).

Days 4–6 Weather Summary

Light rain (total 3mm), mostly falling on Wed night. Icy conditions (max 9°C on Wed morning, min 0°C on Thu afternoon). Winds decreasing (strong winds from the SW on Wed afternoon, calm by Thu night).

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 1°C on Mon afternoon, min -6°C on Sat night). Wind will be generally light.

Days 10–12 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 6°C on Thu night, min -4°C on Tue night). Winds decreasing (strong winds from the N on Tue afternoon, calm by Wed night).

Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thu
18
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
9:15AM1.47m
9:42PM1.14m
10:11AM1.38m
10:41PM1.12m
11:07AM1.28m
11:42PM1.10m
12:04PM1.18m
00:43AM1.10m
1:01PM1.09m
1:42AM1.11m
1:57PM1.02m
2:38AM1.13m
2:50PM0.98m
3:28AM1.15m
3:39PM0.95m
4:13AM1.17m
4:25PM0.95m
4:55AM1.20m
5:08PM0.95m
5:36AM1.23m
5:50PM0.96m
6:16AM1.25m
6:31PM0.98m
Low Tide
3:43PM0.07m
3:43AM0.08m
4:38PM0.12m
4:43AM0.16m
5:33PM0.17m
5:46AM0.23m
6:27PM0.21m
6:51AM0.29m
7:19PM0.24m
7:56AM0.32m
8:09PM0.26m
8:56AM0.34m
8:56PM0.26m
9:50AM0.34m
9:40PM0.26m
10:38AM0.32m
10:22PM0.26m
11:22AM0.30m
11:04PM0.24m
12:03PM0.28m
11:44PM0.23m
12:43PM0.26m
Wave
height (m) 
direction
period (s) 
0.4
SE
8
0.5
SE
8
0.9
WSW
5
0.9
NW
4
0.6
N
3
0.2
ESE
8
0.1
SE
9
0.4
SSW
2
1.4
SW
5
1
SSW
5
2
SSW
6
1.6
SSW
6
0.9
SW
4
0.7
S
9
0.5
S
8
0.4
SSE
8
0.4
SSE
7
0.3
SSE
7
0.4
SSE
7
0.3
SSE
7
0.3
NNW
2
0.5
NW
3
0.6
NW
3
0.5
WNW
3
0.1
SE
10
0.1
SE
10
0.8
ENE
3
1.5
NE
5
2.1
NE
6
1.8
E
9
1
ESE
12
0.9
ESE
12
0.6
ESE
12
0.4
SE
12
0.7
S
5
part cloud
part cloud
clear
part cloud
cloud
part cloud
part cloud
cloud
rain showers
part cloud
cloud
rain showers
clear
part cloud
cloud
cloud
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
cloud
cloud
light snow
light snow
part cloud
clear
clear
part cloud
part cloud
cloud
some clouds
some clouds
clear
some clouds
cloudy
some clouds
some clouds
cloudy
rain shwrs
some clouds
cloudy
rain shwrs
clear
some clouds
cloudy
cloudy
some clouds
clear
clear
some clouds
clear
clear
clear
some clouds
some clouds
cloudy
cloudy
light snow
light snow
some clouds
clear
clear
some clouds
some clouds
cloudy
 km/h
5
NNW
10
SW
25
WNW
30
NNW
20
NNE
10
N
10
SW
20
SW
35
WSW
25
SSW
40
SW
35
WSW
20
NW
15
WNW
5
NW
10
NNW
15
NW
10
NNW
5
WNW
10
WNW
15
NNW
20
NW
25
NW
20
WNW
10
W
0
SSW
25
NE
40
NNE
45
NNE
40
N
25
NNW
25
NW
10
WNW
15
SW
25
SW
 mm 
1
2
max°C
3
3
2
-4
-3
-5
-1
4
5
9
9
8
3
2
0
3
3
-1
0
0
-3
-2
-1
-3
0
1
-1
0
-2
-1
2
1
-2
3
4
Moonrise
7:10
8:27
9:40
10:48
11:53
12:56
1:58
3:00
4:04
5:07
6:09
Moonset
9:59
10:38
11:07
11:32
11:53
12:12
12:31
12:51
1:14
1:40
2:11
2:50
Sunrise
6:58
6:58
7:00
7:01
7:01
7:03
7:03
7:03
7:05
7:05
7:05
7:07
Sunset
4:15
4:15
4:15
4:15
4:16
4:16
4:16
4:16
4:16
4:17
4:17
4:17
Today's sea temperature in Charlestown is
9.4° C
(Statistics for 07 Dec 1981-2005 – mean: 9.8 max: 12.4 min: 8.3°C)
Issued (local time): 12 am Sunday 07 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest