Caernarfon Sea Conditions and Tide Table

Caernarfon 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 08:30 AM and sunset is at 04:02 PM.

Days 1–3 Weather Summary

Mostly dry. Air temperatures will be slightly above freezing (max 4°C on Wed morning, min 1°C on Thu night). Mainly fresh winds.

Days 4–6 Weather Summary

Mostly dry. Low air temperatures (max 6°C on Mon afternoon, min 2°C on Sun night). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Mild temperatures (max 8°C on Tue night, min 1°C on Thu night). Winds increasing (calm on Tue afternoon, fresh winds from the NNE by Thu night).

Days 10–12 Weather Summary

Moderate rain (total 15mm), heaviest on Sat afternoon. Mild temperatures (max 8°C on Sat afternoon, min 2°C on Fri morning). Wind will be generally light.

Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
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
1:09PM6.33m
1:34AM5.75m
1:49PM6.20m
2:17AM5.61m
2:32PM6.03m
3:06AM5.47m
3:23PM5.84m
4:04AM5.37m
4:23PM5.68m
5:10AM5.36m
5:32PM5.62m
6:21AM5.49m
6:46PM5.72m
7:28AM5.76m
7:54PM5.98m
8:28AM6.13m
8:56PM6.30m
9:23AM6.52m
9:51PM6.60m
10:13AM6.88m
10:42PM6.79m
11:01AM7.13m
11:30PM6.84m
Low Tide
7:08AM1.17m
7:40PM1.01m
7:47AM1.32m
8:22PM1.12m
8:30AM1.51m
9:08PM1.23m
9:20AM1.69m
10:00PM1.34m
10:18AM1.82m
11:00PM1.41m
11:25AM1.85m
00:06AM1.39m
12:37PM1.70m
1:15AM1.27m
1:47PM1.39m
2:19AM1.05m
2:50PM0.97m
3:18AM0.79m
3:48PM0.55m
4:12AM0.55m
4:41PM0.19m
5:01AM0.40m
5:30PM-0.02m
5:47AM0.36m
Wave
height (m) 
direction
period (s) 
0.1
NE
2
0.1
NE
2
0.1
NE
2
0.4
NE
3
0.5
NE
3
0.3
NE
2
0.2
NNE
2
0.3
NNE
3
0.3
NE
3
0.4
NE
3
0.4
NE
3
0.1
W
6
0.1
W
5
0
W
17
0
W
16
0.1
W
14
0.2
NNW
2
0.4
NNW
5
0.2
NNW
4
0.1
W
17
0.6
NW
4
1.1
NW
6
1.1
NNW
5
0.9
NNW
6
0.8
NNW
6
0.7
NNW
4
1.2
NNW
5
0.3
NNE
3
0.4
N
3
0.1
NW
3
0.6
W
4
1.1
WNW
5
1.3
WNW
6
0.8
NW
6
0.8
NW
6
0.4
NNW
5
cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
part cloud
light rain
mod rain
light rain
part cloud
cloud
part cloud
cloudy
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
clear
clear
clear
clear
clear
some clouds
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
clear
some clouds
some clouds
some clouds
cloudy
some clouds
light rain
mod rain
light rain
some clouds
cloudy
some clouds
 km/h
15
ENE
15
ENE
15
ENE
20
ENE
25
ENE
15
ENE
15
ENE
20
ENE
20
ENE
20
ENE
20
ENE
15
ENE
10
E
10
ENE
0
SE
5
ENE
10
N
10
NE
5
ENE
5
N
10
NW
25
NNE
30
NNE
20
N
20
NNE
20
N
35
NNE
15
NE
15
NNE
5
S
15
SW
15
W
15
NW
20
NNE
20
NNE
10
NNE
 mm 
5
6
4
max°C
4
3
3
4
4
3
3
4
3
5
5
4
4
4
3
4
6
6
6
6
8
6
4
4
4
4
4
3
3
3
5
8
7
7
7
7
Moonrise
11:14
11:25
11:34
11:44
11:54
12:06
12:23
12:47
1:27
2:28
3:51
5:24
Moonset
8:48
10:09
11:30
12:53
2:20
3:52
5:28
7:01
8:19
9:14
9:49
Sunrise
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:30
Sunset
4:02
4:02
4:04
4:05
4:06
4:07
4:07
4:08
4:09
4:10
4:12
4:13
Today's sea temperature in Caernarfon is
9.8° C
(Statistics for 24 Dec 1981-2005 – mean: 9.7 max: 11.0 min: 8.4°C)
Issued (local time): 5 am Wednesday 24 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest