Belfast, Belfast River Sea Conditions and Tide Table

Belfast, Belfast River 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 07:18 AM and sunset is at 05:23 PM.

Days 1–3 Weather Summary

Light rain (total 5mm), mostly falling on Thu night. Warm air temperatures (max 21°C on Thu morning, min 7°C on Fri night). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 18°C on Sun afternoon, min 8°C on Mon afternoon). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Warm (max 23°C on Fri afternoon, min 14°C on Wed morning). Wind will be generally light.

Days 10–12 Weather Summary

Mostly dry. Warm (max 24°C on Sat afternoon, min 16°C on Tue morning). Wind will be generally light.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
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
8:13AM2.48m
8:23PM2.12m
8:52AM2.51m
9:02PM2.12m
9:29AM2.50m
9:40PM2.12m
10:04AM2.48m
10:16PM2.10m
10:39AM2.45m
10:52PM2.09m
11:15AM2.41m
11:30PM2.10m
11:54AM2.37m
00:15AM2.12m
12:38PM2.33m
1:04AM2.16m
1:29PM2.29m
1:59AM2.23m
2:24PM2.24m
2:56AM2.32m
3:22PM2.19m
3:56AM2.41m
4:24PM2.16m
4:59AM2.52m
Low Tide
2:24PM0.17m
2:15AM0.10m
3:04PM0.14m
2:55AM0.07m
3:43PM0.12m
3:35AM0.05m
4:21PM0.11m
4:14AM0.04m
4:58PM0.11m
4:54AM0.05m
5:36PM0.10m
5:35AM0.07m
6:15PM0.09m
6:20AM0.10m
6:59PM0.08m
7:10AM0.15m
7:47PM0.05m
8:07AM0.19m
8:41PM0.02m
9:13AM0.21m
9:40PM-0.02m
10:22AM0.18m
10:41PM-0.10m
Wave
height (m) 
direction
period (s) 
cloud
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloudy
rain shwrs
rain shwrs
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
clear
clear
clear
some clouds
clear
clear
clear
clear
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
 km/h
5
ESE
10
SSE
15
SSW
20
WNW
15
WNW
5
NW
5
ENE
5
ESE
5
WSW
10
NW
5
NW
10
NE
20
NE
20
ENE
15
NNE
10
NE
5
SE
5
W
5
WNW
5
N
5
E
5
ENE
10
ESE
5
SSW
10
W
10
W
10
WSW
10
WNW
5
WSW
5
W
10
WNW
5
WSW
10
W
10
W
10
WNW
5
WNW
 mm 
2
3
max°C
21
20
20
15
15
10
15
16
14
17
18
16
10
9
13
18
18
17
19
21
16
19
19
18
22
23
21
23
24
21
22
23
20
22
23
20
Moonrise
6:15
7:11
8:03
8:50
9:31
10:07
10:40
11:09
11:37
12:05
12:35
1:09
Moonset
4:07
4:56
5:50
6:49
7:50
8:51
9:51
10:52
11:53
12:56
2:02
Sunrise
7:18
7:20
7:20
7:20
7:20
7:22
7:22
7:22
7:22
7:22
7:24
7:24
Sunset
5:23
5:23
5:24
5:24
5:25
5:25
5:27
5:27
5:28
5:28
5:29
5:30
Today's sea temperature in Belfast, Belfast River is
11.5° C
(Statistics for 18 Dec 1981-2005 – mean: 20.9 max: 23.5 min: 18.5°C)
Issued (local time): 12 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest