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 06:26 AM and sunset is at 06:42 PM.

Days 1–3 Weather Summary

Light rain (total 5mm), mostly falling on Fri night. Cool air temperatures (max 13°C on Fri morning, min 4°C on Sun night). Winds decreasing (strong winds from the NNW on Sat night, light winds from the WSW by Sun night).

Days 4–6 Weather Summary

Light rain (total 5mm), mostly falling on Wed afternoon. Cool air temperatures (max 12°C on Wed afternoon, min 4°C on Tue night). Wind will be generally light.

Days 7–9 Weather Summary

Moderate rain (total 13mm), heaviest on Sat morning. Mild temperatures (max 9°C on Thu afternoon, min 3°C on Fri night). Winds decreasing (fresh winds from the SSE on Sat morning, light winds from the W by Sat night).

Days 10–12 Weather Summary

Heavy rain (total 20mm), heaviest during Mon afternoon. Very mild (max 10°C on Tue morning, min 7°C on Sun morning). Winds increasing (light winds from the NW on Tue afternoon, near gales from the SE by Tue night).

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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
9:17AM4.13ft
9:47PM4.04ft
10:01AM3.67ft
11:13PM3.64ft
12:03PM3.31ft
2:12AM3.81ft
2:36PM3.64ft
3:17AM4.46ft
3:32PM4.17ft
3:57AM5.22ft
4:13PM4.69ft
4:33AM5.97ft
4:50PM5.18ft
5:09AM6.63ft
5:27PM5.58ft
5:46AM7.05ft
6:03PM5.87ft
6:24AM7.15ft
6:40PM6.04ft
7:02AM6.96ft
7:18PM6.04ft
7:41AM6.43ft
7:57PM5.84ft
Low Tide
3:17PM2ft
3:54AM2.43ft
4:23PM2.36ft
6:37AM2.76ft
7:23PM2.4ft
9:01AM2.4ft
8:59PM1.97ft
9:56AM1.77ft
9:47PM1.41ft
10:35AM1.15ft
10:25PM0.85ft
11:11AM0.52ft
11:00PM0.33ft
11:45AM0.07ft
11:35PM-0.07ft
12:19PM-0.2ft
00:11AM-0.3ft
12:53PM-0.2ft
00:50AM-0.36ft
1:27PM0ft
1:31AM-0.16ft
2:01PM0.36ft
2:15AM0.26ft
Wave
height (ft) 
direction
period (s) 
2
ESE
3
2
ESE
3
3
NW
13
4.5
NW
14
7.5
NW
14
7
NW
14
7
NNW
8
5
NW
12
3.5
NW
11
2.5
NW
10
2
NW
10
3.5
NW
9
4
NW
8
4
NW
9
3.5
NW
9
3
NW
10
2.5
NW
12
2.5
NW
11
6
NW
14
6
NW
15
6
NW
14
7
NW
13
8
NW
13
6.5
NW
13
5
NW
12
4
NW
12
3.5
NW
11
4
NW
11
5
NW
16
6
NW
14
3.5
NW
13
2.5
NW
12
2.5
NW
11
3.5
NW
12
4.5
NW
16
4.5
NW
16
part cloud
part cloud
light rain
light rain
light rain
part cloud
light rain
cloud
clear
part cloud
cloud
light rain
part cloud
cloud
part cloud
part cloud
light rain
light rain
rain showers
cloud
rain showers
rain showers
part cloud
part cloud
rain showers
rain showers
clear
clear
rain showers
rain showers
cloud
mod rain
rain showers
clear
part cloud
light rain
some clouds
some clouds
light rain
light rain
light rain
some clouds
light rain
cloudy
clear
some clouds
cloudy
light rain
some clouds
cloudy
some clouds
some clouds
light rain
light rain
rain shwrs
cloudy
rain shwrs
rain shwrs
some clouds
some clouds
rain shwrs
rain shwrs
clear
clear
rain shwrs
rain shwrs
cloudy
mod rain
rain shwrs
clear
some clouds
light rain
 mph
15
SE
15
SE
20
SE
10
SSE
20
NNW
20
NNW
15
N
10
N
10
NNW
5
SW
5
WSW
10
WSW
20
NW
15
NW
5
WSW
10
SSE
10
S
10
SSW
20
SSE
15
W
10
SW
20
WSW
15
WNW
10
SSW
20
SSE
10
SW
5
SSW
10
W
20
WNW
20
NW
10
SW
20
S
20
W
15
W
5
NW
20
SE
 in 
0.04
0.04
0.08
0.04
0.08
0.08
0.04
0.08
0.04
0.04
0.3
0.08
0.08
0.04
0.2
0.3
0.08
max°F
55
55
52
50
45
45
45
45
45
46
52
48
48
48
46
52
54
46
46
48
43
46
46
41
45
46
41
48
46
46
48
48
45
50
50
48
Moonrise
2:44
3:50
4:37
5:07
5:26
5:39
5:48
5:55
6:02
7:10
7:20
7:34
Moonset
8:12
8:58
10:05
11:30
1:02
2:38
4:14
5:50
7:28
10:08
11:52
Sunrise
6:26
6:24
6:20
6:18
6:16
6:13
6:11
6:07
6:05
7:03
6:01
5:58
Sunset
6:42
6:44
6:45
6:47
6:50
6:52
6:53
6:55
6:58
8:00
7:01
7:04
Today's sea temperature in Portstewart is 47 °F (Statistics for 21 Mar 1981-2005 – mean: 47 max: 48 min: 45°F)
Issued (local time): 11 am Friday 21 Mar 2025
Forecast update inUpdates in 5 hr 16 min 04 sUpdate imminent
Nearest