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 06:53 PM.

Days 1–4 Weather Summary

Light rain (total 2mm), mostly falling on Mon night. Cool air temperatures (max 10°C on Tue afternoon, min 3°C on Tue morning). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 9mm), mostly falling on Fri morning. Low air temperatures (max 9°C on Thu night, min 2°C on Fri afternoon). Mainly strong winds.

Days 8–10 Weather Summary

A dusting of snow. Milder later with heavy rain (total 29mm) on Mon night. Freeze-thaw conditions (max 9°C on Mon night, min -1°C on Sun night). Winds decreasing (fresh winds from the S on Mon night, light winds from the WNW by Tue night).

Days 11–13 Weather Summary

Drizzle at first, then turning colder with dusting of snow on Sat night. Freeze-thaw conditions (max 7°C on Fri afternoon, min 0°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri afternoon, calm by Sat morning).

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Sat
29
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
Wave Height Map
High Tide
10:44PM1.24m
10:57AM1.03m
11:21PM1.19m
11:32AM0.97m
00:00AM1.14m
12:12PM0.92m
00:47AM1.09m
1:02PM0.87m
1:43AM1.06m
2:07PM0.85m
2:49AM1.06m
3:22PM0.87m
3:58AM1.09m
4:32PM0.95m
5:00AM1.16m
5:32PM1.06m
5:55AM1.23m
6:24PM1.19m
6:46AM1.30m
7:12PM1.32m
7:34AM1.34m
7:59PM1.44m
8:21AM1.36m
Low Tide
5:03AM0.24m
4:56PM0.23m
5:41AM0.30m
5:31PM0.28m
6:24AM0.36m
6:12PM0.32m
7:15AM0.40m
7:02PM0.36m
8:17AM0.42m
8:06PM0.38m
9:27AM0.40m
9:21PM0.37m
10:32AM0.34m
10:33PM0.31m
11:27AM0.25m
11:36PM0.22m
12:15PM0.15m
00:32AM0.11m
1:00PM0.06m
1:24AM0.01m
1:44PM-0.02m
2:14AM-0.05m
2:27PM-0.07m
Wave
height (m) 
direction
period (s) 
1.4
SSE
10
1.2
SSE
10
0.9
SSE
10
0.7
SE
9
0.6
SE
9
0.6
SE
9
0.7
SE
12
0.8
SE
11
0.8
SE
11
1
SE
10
1.3
WSW
6
1.6
WNW
4
1.3
NW
4
0.6
W
5
0.4
SSE
6
0.3
SE
8
0.6
SW
4
0.7
SSW
4
0.4
SSE
8
0.3
SSE
4
0.9
SE
4
1.4
SSE
7
1
S
8
0.9
SSE
8
0.7
SSE
8
0.5
SSE
8
0.8
SW
5
0.8
SSE
9
0.8
SSE
9
0.9
SW
5
0.6
SSE
8
0.8
WSW
3
1.1
SW
4
0.7
S
7
0.3
S
7
0.4
SE
9
light rain
cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
light rain
light rain
light rain
part cloud
part cloud
cloud
part cloud
part cloud
clear
part cloud
cloud
light snow
heavy rain
cloud
part cloud
light rain
light rain
cloud
part cloud
part cloud
cloud
clear
part cloud
rain showers
clear
part cloud
cloud
light rain
cloudy
some clouds
clear
clear
clear
some clouds
cloudy
some clouds
light rain
light rain
light rain
some clouds
some clouds
cloudy
some clouds
some clouds
clear
some clouds
cloudy
light snow
heavy rain
cloudy
some clouds
light rain
light rain
cloudy
some clouds
some clouds
cloudy
clear
some clouds
rain shwrs
clear
some clouds
cloudy
 km/h
25
N
25
N
10
NE
10
NNE
10
ENE
10
ESE
10
ESE
10
SSE
15
SSE
20
ESE
30
WNW
40
NW
35
NW
20
W
20
SW
10
W
25
WNW
25
NW
10
N
15
SE
25
SE
10
WSW
20
W
15
W
15
N
15
WNW
25
WNW
15
W
20
W
25
W
20
WNW
25
WSW
30
W
15
NW
10
S
15
SW
 mm 
2.0
2.0
5
2.0
2.0
23
2.0
2.0
1.0
max°C
8
6
10
7
7
10
6
6
9
9
8
3
2
7
9
6
9
9
4
3
3
9
6
9
7
4
7
4
3
5
3
4
7
5
2
2
Moonrise
10:32
11:36
12:40
1:42
2:40
3:31
4:13
4:49
5:19
5:44
6:08
6:32
Moonset
8:04
8:27
8:55
9:29
10:12
11:05
12:08
1:18
2:33
3:49
5:06
6:24
7:44
Sunrise
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
6:53
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 5.3 °C (Statistics for 17 Mar 1981-2005 – mean: 4.3 max: 6.2 min: 2.7°C)
Issued (local time): 7 pm Monday 17 Mar 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest