National City Sea Conditions and Tide Table

National City 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 — and sunset is at 04:45 PM.

Days 1–4 Weather Summary

Mostly dry. Warm air temperatures (max 21°C on Thu afternoon, min 15°C on Fri night). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 6mm), mostly falling on Wed morning. Warm air temperatures (max 20°C on Mon morning, min 16°C on Wed morning). Winds increasing (calm on Mon night, fresh winds from the S by Wed morning).

Days 8–10 Weather Summary

Moderate rain (total 10mm), heaviest on Wed afternoon. Very mild (max 18°C on Thu morning, min 14°C on Fri night). Winds decreasing (fresh winds from the S on Wed afternoon, calm by Fri night).

Days 11–13 Weather Summary

Mostly dry. Very mild (max 18°C on Mon morning, min 14°C on Sat night). Wind will be generally light.

Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
Wave Height Map
High Tide
9:16PM1.19m
7:56AM1.97m
9:51PM1.19m
8:28AM1.97m
10:27PM1.19m
9:01AM1.96m
11:04PM1.19m
9:34AM1.92m
11:44PM1.20m
10:09AM1.84m
00:28AM1.22m
10:48AM1.72m
1:13AM1.27m
11:35AM1.55m
2:01AM1.36m
12:39PM1.34m
2:48AM1.48m
2:14PM1.15m
3:36AM1.63m
4:04PM1.05m
4:22AM1.80m
5:38PM1.05m
5:10AM1.96m
Low Tide
2:55PM-0.17m
1:41AM0.77m
3:28PM-0.20m
2:15AM0.77m
4:02PM-0.20m
2:50AM0.78m
4:37PM-0.19m
3:25AM0.79m
5:13PM-0.16m
4:05AM0.82m
5:50PM-0.10m
4:54AM0.85m
6:28PM-0.02m
5:59AM0.87m
7:07PM0.09m
7:27AM0.84m
7:50PM0.22m
9:09AM0.70m
8:37PM0.36m
10:40AM0.46m
9:31PM0.49m
11:49AM0.18m
10:30PM0.59m
12:44PM-0.10m
Wave
height (m) 
direction
period (s) 
0.8
WSW
10
0.6
WSW
12
0.5
WSW
12
0.6
WSW
12
0.6
WSW
9
0.5
WSW
8
0.5
SW
11
0.4
SW
11
0.4
WSW
12
0.4
WSW
12
0.4
WSW
11
0.4
WSW
11
0.4
WSW
11
0.4
WSW
10
0.4
WSW
10
0.4
WSW
12
0.7
SSW
6
1.6
S
6
1.7
SSW
6
1
SW
7
0.8
WSW
7
0.7
WSW
7
1.1
W
16
1.1
W
16
1.1
W
16
1
W
15
0.8
W
12
0.7
W
11
0.7
WSW
11
0.6
W
8
0.5
W
8
0.4
WSW
11
0.4
WSW
10
0.4
SW
14
0.5
W
13
0.6
W
13
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
mod rain
rain showers
rain showers
clear
clear
part cloud
part cloud
cloud
light rain
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
clear
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
mod rain
rain shwrs
rain shwrs
clear
clear
some clouds
some clouds
cloudy
light rain
cloudy
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
 km/h
5
W
5
S
5
SW
10
SW
5
W
5
SSW
5
SSW
0
N
5
W
10
NW
10
NNW
5
NW
10
NW
0
N
5
SSW
10
SSW
15
SSE
30
S
30
S
5
ESE
10
SSE
15
SSW
10
SE
5
SE
10
SW
5
W
0
WSW
10
WNW
5
NNE
0
SSE
10
WNW
10
NNW
5
NW
15
WNW
5
NNW
10
WNW
 mm 
6
6
1
3
max°C
21
19
21
19
16
18
18
16
20
19
17
20
20
17
19
18
18
16
16
16
18
17
16
18
17
16
16
16
15
17
17
15
18
17
15
17
Moonrise
6:43
7:34
8:20
9:01
9:36
10:07
10:36
11:03
11:31
12:01
12:35
1:15
Moonset
3:32
4:21
5:17
6:16
7:17
8:19
9:20
10:21
11:23
12:27
1:34
2:45
Sunrise
6:45
6:46
6:46
6:47
6:47
6:48
6:48
6:48
6:48
6:48
6:48
6:50
Sunset
4:45
4:45
4:45
4:45
4:46
4:46
4:47
4:47
4:49
4:50
4:50
4:51
Today's sea temperature in National City is
16.6° C
(Statistics for 18 Dec 1981-2005 – mean: 15.5 max: 17.2 min: 14.1°C)
Issued (local time): 3 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest