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 05:52 AM and sunset is at 09:09 PM.

Days 1–3 Weather Summary

Light rain (total 5mm), mostly falling on Thu afternoon. Warm air temperatures (max 24°C on Wed afternoon, min 14°C on Thu night). Wind will be generally light.

Days 4–6 Weather Summary

Light rain (total 3mm), mostly falling on Sun morning. Cool air temperatures (max 17°C on Fri morning, min 12°C on Sat night). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 4mm), mostly falling on Mon morning. Very mild (max 18°C on Mon afternoon, min 11°C on Wed night). Wind will be generally light.

Days 10–12 Weather Summary

Mostly dry. Very mild (max 16°C on Sat morning, min 11°C on Thu night). Wind will be generally light.

Days 13–16 Weather Summary

Moderate rain (total 18mm), heaviest on Mon morning. Very mild (max 18°C on Mon afternoon, min 11°C on Tue night). Winds increasing (calm on Sun morning, fresh winds from the W by Wed afternoon).

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wed
26
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
PM
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
6:11PM1.87m
6:29AM1.60m
6:54PM2.02m
7:08AM1.65m
7:34PM2.10m
7:45AM1.66m
8:12PM2.10m
8:20AM1.64m
8:48PM2.02m
8:54AM1.59m
9:23PM1.87m
9:28AM1.53m
9:56PM1.68m
10:01AM1.44m
10:28PM1.47m
10:38AM1.33m
11:03PM1.28m
11:24AM1.21m
11:54PM1.10m
1:03PM1.11m
2:29AM1.01m
3:46PM1.16m
4:16AM1.09m
4:48PM1.29m
4:59AM1.20m
5:25PM1.44m
5:30AM1.32m
5:55PM1.59m
Low Tide
12:04PM0.20m
00:51AM0.14m
12:44PM0.06m
1:33AM0.07m
1:22PM-0.03m
2:11AM0.06m
1:58PM-0.07m
2:47AM0.09m
2:34PM-0.04m
3:21AM0.17m
3:09PM0.05m
3:52AM0.28m
3:45PM0.18m
4:23AM0.40m
4:23PM0.35m
4:55AM0.52m
5:08PM0.52m
5:35AM0.63m
6:11PM0.68m
6:42AM0.72m
8:03PM0.77m
8:39AM0.74m
10:15PM0.72m
10:18AM0.64m
11:16PM0.61m
11:10AM0.50m
11:53PM0.49m
11:46AM0.35m
00:25AM0.38m
Wave
Height (m)
Direction
Period (s)
0.5
NW
8
0.4
NW
7
0.4
NW
12
0.3
NW
10
0.2
WNW
10
0.3
NW
12
0.3
NW
10
0.3
NW
10
0.4
NW
10
0.4
NW
9
0.6
WNW
3
0.4
NW
8
0.6
NW
6
0.8
NW
6
0.7
NW
8
0.6
NW
8
0.6
NW
8
0.5
NW
7
0.4
NW
8
0.4
NW
8
0.2
WNW
7
0.8
NW
5
0.9
NW
5
0.9
NW
9
0.8
NW
10
0.8
NW
11
0.9
NW
10
1
NNW
6
0.8
NW
7
0.6
NW
6
0.4
NW
6
0.4
NW
5
0.4
NW
5
0.5
NW
6
0.6
NW
6
0.4
NW
7
0.4
NW
8
0.4
NW
7
0.4
NW
8
0.4
WNW
8
0.5
S
3
0.8
NW
10
0.8
NW
10
1.2
NW
8
1.8
NW
13
1.4
NW
12
1.2
NW
11
part cloud
clear
part cloud
part cloud
cloud
rain showers
cloud
thunderstorm
rain showers
part cloud
part cloud
cloud
cloud
part cloud
light rain
light rain
cloud
cloud
light rain
part cloud
part cloud
cloud
part cloud
rain showers
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
part cloud
light rain
light rain
rain showers
light rain
rain showers
clear
light rain
rain showers
some clouds
clear
some clouds
some clouds
cloudy
rain shwrs
cloudy
risk tstorm
rain shwrs
some clouds
some clouds
cloudy
cloudy
some clouds
light rain
light rain
cloudy
cloudy
light rain
some clouds
some clouds
cloudy
some clouds
rain shwrs
clear
clear
clear
clear
clear
some clouds
some clouds
cloudy
some clouds
clear
some clouds
some clouds
cloudy
cloudy
some clouds
light rain
light rain
rain shwrs
light rain
rain shwrs
clear
light rain
rain shwrs
km/h
20
SSE
15
SSE
15
SSE
15
SSE
15
S
10
S
10
S
10
SSW
15
NW
15
W
20
WNW
15
WNW
20
W
25
NW
15
W
10
S
15
SSE
10
SSW
5
S
5
SE
10
SW
25
W
25
WNW
25
W
15
NW
15
NNW
20
NNW
20
NNW
20
NNW
15
NW
20
WNW
20
NW
15
SSW
15
SW
10
N
5
W
5
SSW
10
ENE
15
SSE
20
S
25
SSW
25
WSW
25
SW
35
W
30
WSW
25
S
25
SSW
 mm
2
2
1
1
2
2
2
4
4
1
3
2
3
1
max °C
18
21
19
22
24
22
21
21
17
17
16
14
15
15
14
12
13
14
16
18
17
14
16
14
15
14
13
13
13
12
15
15
13
16
15
14
16
16
16
17
18
16
14
14
12
13
15
Moonrise
3:25
5:06
6:43
8:15
9:42
11:07
12:30
1:53
3:15
4:33
5:43
6:38
7:17
7:42
7:59
8:11
Moonset
8:55
9:09
9:19
9:26
9:33
9:40
9:49
9:59
10:15
10:38
11:13
12:04
1:11
2:29
3:51
Sunrise
5:52
5:52
5:54
5:56
5:58
6:01
6:03
6:05
6:07
6:07
6:09
6:11
6:13
6:16
6:18
6:20
Sunset
9:09
9:07
9:06
9:04
9:01
8:59
8:57
8:54
8:52
8:50
8:47
8:45
8:43
8:39
8:37
8:36
Today's sea temperature in Portstewart is
15.3° C
(Statistics for 11 Aug 1981-2005 – mean: 14.5 max: 16.5 min: 13.1°C)
Issued (local time): 12 pm Tuesday 11 Aug 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest