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 —.

Days 1–4 Weather Summary

Heavy rain (total 27mm), heaviest during Thu morning. Cool air temperatures (max 17°C on Fri morning, min 11°C on Wed night). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 2mm), mostly falling on Fri night. Cool air temperatures (max 17°C on Sat morning, min 16°C on Fri night). Wind will be generally light.

Days 8–10 Weather Summary

Mostly dry. Warm (max 20°C on Thu morning, min 12°C on Tue night). Wind will be generally light.

Days 11–13 Weather Summary

Moderate rain (total 17mm), heaviest on Fri morning. Very mild (max 17°C on Thu night, min 12°C on Thu night). Wind will be generally light.

Days 14–17 Weather Summary

Light rain (total 4mm), mostly falling on Tue night. Very mild (max 16°C on Wed morning, min 11°C on Sun night). Wind will be generally light.

Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thu
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
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
High Tide
8:04PM1.87m
8:55AM1.18m
8:54PM1.86m
9:44AM1.21m
9:42PM1.79m
10:33AM1.23m
10:29PM1.67m
11:21AM1.25m
11:16PM1.51m
12:10PM1.27m
00:03AM1.34m
1:00PM1.29m
00:52AM1.17m
1:52PM1.30m
1:49AM1.03m
2:46PM1.31m
2:55AM0.94m
3:42PM1.33m
4:06AM0.89m
4:36PM1.36m
5:13AM0.90m
5:26PM1.41m
6:07AM0.93m
6:12PM1.46m
6:53AM0.98m
6:53PM1.52m
7:33AM1.02m
7:32PM1.57m
8:10AM1.07m
Low Tide
2:56AM-0.06m
2:23PM0.23m
3:43AM-0.06m
3:14PM0.24m
4:28AM-0.02m
4:06PM0.28m
5:10AM0.04m
5:00PM0.34m
5:50AM0.13m
5:57PM0.42m
6:29AM0.22m
7:00PM0.49m
7:08AM0.31m
8:10PM0.53m
7:51AM0.39m
9:27PM0.54m
8:40AM0.46m
10:39PM0.50m
9:36AM0.49m
11:38PM0.45m
10:34AM0.49m
00:26AM0.38m
11:27AM0.47m
1:07AM0.32m
12:15PM0.43m
1:44AM0.26m
12:58PM0.39m
2:19AM0.21m
Wave
Height (m)
Direction
Period (s)
0.8
S
7
2
S
8
3
S
10
2.2
S
8
2.2
S
8
2.1
S
8
1.7
S
8
1.6
SSE
7
1.4
SE
7
1.4
ESE
7
1.7
ESE
7
2
ESE
7
2.2
E
9
2.2
E
10
2
E
10
1.8
E
10
1.7
E
10
1.6
E
10
1.5
E
11
1.4
E
10
1.3
E
10
1.2
E
10
1.1
E
10
1.1
E
10
1.4
E
11
1.6
E
11
1.6
E
11
1.5
E
11
1.8
E
11
2.2
ESE
11
1.8
E
11
1.6
ESE
11
1.6
ESE
11
1.6
ESE
11
1.6
ESE
11
1.7
ESE
11
1.8
SSE
9
1.5
ESE
11
1.5
SE
12
1.3
ESE
11
1.3
ESE
11
1.7
SSE
9
2.5
S
9
2.3
SSE
9
2
SSE
9
1.7
ESE
11
1.5
ESE
11
clear
rain showers
rain showers
rain showers
mod rain
rain showers
rain showers
rain showers
rain showers
light rain
cloud
cloud
part cloud
cloud
cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
rain showers
mod rain
light rain
rain showers
clear
clear
rain showers
part cloud
rain showers
clear
clear
clear
clear
clear
part cloud
rain showers
part cloud
part cloud
cloud
part cloud
clear
rain shwrs
rain shwrs
rain shwrs
mod rain
rain shwrs
rain shwrs
rain shwrs
rain shwrs
light rain
cloudy
cloudy
some clouds
cloudy
cloudy
some clouds
some clouds
cloudy
some clouds
clear
clear
clear
clear
clear
clear
clear
some clouds
rain shwrs
mod rain
light rain
rain shwrs
clear
clear
rain shwrs
some clouds
rain shwrs
clear
clear
clear
clear
clear
some clouds
rain shwrs
some clouds
some clouds
cloudy
some clouds
km/h
10
WSW
25
SSW
25
SSW
20
S
20
S
10
SE
15
SE
15
SSE
15
SE
10
SE
20
SSE
25
SSE
20
SE
15
SE
15
SE
10
SE
10
E
10
E
10
NNE
10
NNW
10
ENE
10
NW
5
W
5
E
5
WNW
10
NW
5
ESE
15
SW
10
ESE
5
ESE
5
NE
5
NNW
10
E
5
W
15
SSW
15
S
10
SW
10
WSW
10
SSE
5
SW
10
SW
20
S
20
S
10
SE
15
SSE
10
SE
10
S
 mm
1
2
3
7
6
5
2
1
2
1
6
4
3
2
1
4
max °C
14
15
15
15
15
15
16
17
16
16
17
16
16
17
16
16
17
17
17
18
19
16
17
17
15
20
19
17
14
14
14
16
16
14
16
15
15
15
15
14
15
15
14
16
16
15
14
Moonrise
7:35
8:16
8:51
9:21
9:49
10:16
10:44
11:13
11:46
12:23
1:06
1:55
2:49
3:47
4:46
Moonset
5:57
7:10
8:18
9:23
10:25
11:25
12:24
1:24
2:23
3:21
4:16
5:07
5:52
6:32
7:07
Sunrise
6:54
6:54
6:52
6:52
6:52
6:52
6:50
6:50
6:50
6:50
6:48
6:48
6:48
6:47
6:47
6:46
Sunset
5:04
5:04
5:05
5:05
5:06
5:07
5:07
5:07
5:08
5:08
5:09
5:09
5:10
5:12
5:12
Today's sea temperature in Charlestown is
18.3° C
(Statistics for 14 Jul 1981-2005 – mean: 18.5 max: 20.6 min: 16.4°C)
Issued (local time): 9 pm Tuesday 14 Jul 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest