Johnstown Sea Conditions and Tide Table

Johnstown 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 06:47 AM and sunset is at 07:28 PM.

Days 1–3 Weather Summary

Moderate rain (total 15mm), heaviest on Fri morning. Icy conditions (max 12°C on Fri night, min -1°C on Sat night). Winds decreasing (strong winds from the S on Fri night, light winds from the NNW by Sun night).

Days 4–6 Weather Summary

Mostly dry. Icy conditions (max 6°C on Wed afternoon, min -1°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the E by Wed night).

Days 7–9 Weather Summary

A moderate fall of snow, heaviest on Thu night. Temperatures will be slightly above freezing (max 4°C on Sat morning, min 1°C on Thu morning). Winds decreasing (strong winds from the E on Thu afternoon, light winds from the NNE by Fri night).

Days 10–12 Weather Summary

A dusting of snow on Mon morning. Freezing level rising with drizzle on Mon morning. Freeze-thaw conditions (max 5°C on Mon afternoon, min -1°C on Sun night). Winds increasing (light winds from the W on Sun night, fresh winds from the NW by Mon afternoon).

Friday
29
Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
Monday
8
Tuesday
9
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
3:24PM0.42m
4:24AM0.38m
3:59PM0.43m
4:52AM0.38m
4:44PM0.43m
5:29AM0.39m
5:56PM0.43m
6:49AM0.39m
7:51PM0.45m
9:10AM0.40m
9:04PM0.47m
10:06AM0.42m
9:53PM0.49m
10:48AM0.42m
10:36PM0.49m
11:30AM0.42m
11:21PM0.48m
12:15PM0.42m
00:13AM0.44m
1:04PM0.40m
1:19AM0.38m
1:56PM0.38m
2:36AM0.33m
Low Tide
8:46AM0.32m
9:34PM0.32m
9:05AM0.33m
10:22PM0.34m
9:37AM0.34m
00:04AM0.35m
10:48AM0.36m
1:15AM0.37m
12:38PM0.37m
2:26AM0.37m
2:03PM0.37m
4:40AM0.37m
3:34PM0.37m
5:39AM0.36m
4:53PM0.35m
6:13AM0.34m
5:54PM0.33m
6:41AM0.31m
6:48PM0.29m
7:08AM0.29m
7:43PM0.26m
7:36AM0.26m
8:44PM0.22m
Wave
height (m) 
direction
period (s) 
mod rain
light rain
light rain
cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
part cloud
cloud
cloud
part cloud
cloud
clear
part cloud
light snow
light snow
mod snow
light snow
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
light snow
part cloud
part cloud
part cloud
part cloud
clear
mod rain
light rain
light rain
cloudy
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
cloudy
some clouds
cloudy
cloudy
some clouds
cloudy
clear
some clouds
light snow
light snow
mod snow
light snow
some clouds
some clouds
clear
clear
clear
clear
clear
some clouds
light snow
some clouds
some clouds
some clouds
some clouds
clear
 km/h
20
S
20
SSE
30
SSE
35
S
30
SSW
10
W
20
W
15
WNW
5
W
15
NNW
20
NW
15
NNW
10
NNW
10
NE
5
N
10
N
5
ENE
15
NE
30
E
45
E
35
ENE
30
NE
25
NE
25
NNE
25
N
30
NNW
25
NNW
20
NNW
25
NNW
10
WNW
15
SSW
30
NW
20
NW
20
NW
20
NW
10
NW
 mm 
9
3
3
1.0
max°C
10
11
12
3
3
3
1
3
1
3
3
0
3
4
1
4
6
2
1
1
1
1
2
1
4
3
1
3
4
0
4
5
1
3
4
-1
Moonrise
12:29
1:39
2:43
3:38
4:21
4:55
5:22
5:44
6:04
6:24
6:45
Moonset
8:21
8:52
9:34
10:27
11:35
12:52
2:15
3:39
5:03
6:27
7:50
9:15
Sunrise
6:47
6:46
6:43
6:41
6:39
6:37
6:35
6:33
6:31
6:30
6:28
6:26
Sunset
7:28
7:29
7:30
7:31
7:32
7:34
7:35
7:37
7:37
7:38
7:40
7:42
Today's sea temperature in Johnstown is 2.1 °C (Statistics for 29 Mar 1981-2005 – mean: 0.1 max: 1.5 min: -1.0°C)
Nearest