Portstewart Sea Conditions and Tide Table

Portstewart 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 04:45 AM and sunset is at 10:08 PM.

Days 1–3 Weather Summary

Light rain (total 3mm), mostly falling on Wed afternoon. Warm air temperatures (max 21°C on Thu afternoon, min 10°C on Tue night). Wind will be generally light.

Days 4–6 Weather Summary

Light rain (total 5mm), mostly falling on Sun night. Warm air temperatures (max 22°C on Fri morning, min 11°C on Sun night). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 2mm), mostly falling on Mon afternoon. Very mild (max 17°C on Wed afternoon, min 10°C on Tue night). Winds decreasing (strong winds from the WNW on Mon night, calm by Wed afternoon).

Days 10–12 Weather Summary

Moderate rain (total 12mm), heaviest on Fri morning. Warm (max 22°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light.

Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
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
10:40AM1.28m
11:26PM1.60m
11:41AM1.22m
00:27AM1.58m
12:56PM1.19m
1:37AM1.57m
2:18PM1.22m
2:48AM1.58m
3:29PM1.33m
3:53AM1.61m
4:29PM1.47m
4:52AM1.64m
5:21PM1.61m
5:45AM1.66m
6:10PM1.74m
6:34AM1.65m
6:58PM1.84m
7:19AM1.61m
7:44PM1.89m
8:02AM1.55m
8:29PM1.90m
8:42AM1.47m
9:15PM1.85m
Low Tide
4:54PM0.37m
6:16AM0.51m
5:50PM0.42m
7:19AM0.49m
6:55PM0.46m
8:24AM0.45m
8:09PM0.47m
9:27AM0.39m
9:25PM0.43m
10:26AM0.33m
10:38PM0.35m
11:19AM0.28m
11:43PM0.26m
12:07PM0.22m
00:41AM0.19m
12:53PM0.18m
1:35AM0.15m
1:36PM0.15m
2:25AM0.17m
2:18PM0.14m
3:12AM0.23m
2:58PM0.15m
3:59AM0.31m
Wave
height (m) 
direction
period (s) 
0.6
WNW
9.0
0.7
NW
7.0
0.6
NW
9.0
0.6
NW
9.0
0.7
NW
10.0
0.6
NW
9.0
0.5
NW
9.0
0.5
NW
9.0
0.5
NW
9.0
0.4
NW
8.0
0.4
WNW
5.0
0.4
NW
8.0
0.5
NW
12.0
0.6
NW
11.0
0.5
NW
10.0
0.4
NW
10.0
0.4
NW
11.0
0.8
NW
11.0
0.8
NW
10.0
1.4
NW
12.0
1.7
NW
12.0
2.2
NW
12.0
2.3
NW
12.0
1.9
NNW
11.0
1.4
NNW
10.0
1.1
NW
10.0
0.9
NW
9.0
0.7
NW
10.0
0.6
NW
9.0
0.6
NW
10.0
0.6
NNW
12.0
0.6
NNW
11.0
0.7
NW
12.0
0.8
NW
10.0
0.7
NW
10.0
0.7
NW
10.0
part cloud
part cloud
part cloud
part cloud
light rain
rain showers
clear
part cloud
clear
part cloud
cloud
clear
part cloud
part cloud
rain showers
part cloud
cloud
rain showers
part cloud
rain showers
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
rain showers
rain showers
mod rain
light rain
rain showers
cloud
cloud
cloud
some clouds
some clouds
some clouds
some clouds
light rain
rain shwrs
clear
some clouds
clear
some clouds
cloudy
clear
some clouds
some clouds
rain shwrs
some clouds
cloudy
rain shwrs
some clouds
rain shwrs
some clouds
some clouds
clear
clear
some clouds
clear
some clouds
some clouds
rain shwrs
rain shwrs
mod rain
light rain
rain shwrs
cloudy
cloudy
cloudy
 km/h
20
WSW
20
NW
15
SW
15
WSW
5
WNW
10
SE
10
SE
15
SSE
15
SSE
15
SE
25
SSE
15
SSE
20
SSE
25
SSE
20
SSE
15
SSW
20
SSW
20
W
30
SW
30
WSW
35
W
35
W
35
W
25
W
10
WSW
0
E
15
SSE
15
SSW
10
WSW
5
ENE
5
NNW
10
N
5
NNW
5
SE
20
SSE
20
S
 mm 
1
2
1
4
2
1
1
7
1
2
max°C
17
15
12
14
13
13
19
21
18
22
22
19
21
22
20
22
21
15
14
14
12
14
15
12
16
17
16
19
22
17
15
15
14
19
21
19
Moonrise
1:19
1:26
1:33
1:40
1:49
2:01
2:19
2:51
3:44
5:02
6:34
8:08
Moonset
11:32
1:00
2:29
4:01
5:39
7:20
8:58
10:21
11:17
11:50
12:09
Sunrise
4:45
4:45
4:45
4:45
4:46
4:46
4:46
4:46
4:47
4:47
4:48
4:48
Sunset
10:08
10:09
10:09
10:09
10:10
10:10
10:10
10:10
10:10
10:10
10:10
10:10
Today's sea temperature in Portstewart is 13.0 °C (Statistics for 17 Jun 1981-2005 – mean: 12.2 max: 13.4 min: 11.2°C)
Issued (local time): 6 am Tuesday 17 Jun 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest