Tertius Sea Conditions and Tide Table

Tertius 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 08:37 AM and sunset is at 04:01 PM.

Days 1–3 Weather Summary

Mostly dry. Cool air temperatures (max 10°C on Tue afternoon, min 5°C on Mon morning). Winds decreasing (fresh winds from the SSW on Mon morning, light winds from the WSW by Wed afternoon).

Days 4–6 Weather Summary

Some drizzle, heaviest during Fri morning. Low air temperatures (max 9°C on Thu morning, min 4°C on Sat night). Mainly strong winds.

Days 7–9 Weather Summary

Light rain (total 9mm), mostly falling on Tue night. Mild temperatures (max 7°C on Mon night, min 4°C on Sun morning). Winds decreasing (fresh winds from the S on Sun morning, light winds from the SSW by Mon morning).

Days 10–12 Weather Summary

Some drizzle, heaviest during Fri afternoon. Mild temperatures (max 6°C on Wed morning, min 2°C on Thu night). Wind will be generally light.

Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
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
Wave Height Map
High Tide
8:53AM3.70m
9:26PM3.57m
9:55AM3.66m
10:18PM3.62m
10:45AM3.60m
11:02PM3.64m
11:26AM3.54m
11:39PM3.69m
11:59AM3.57m
00:11AM3.82m
12:29PM3.69m
00:44AM4.00m
1:03PM3.82m
1:21AM4.14m
1:44PM3.88m
2:00AM4.16m
2:30PM3.82m
2:38AM4.09m
3:14PM3.69m
3:09AM3.98m
3:49PM3.56m
3:37AM3.93m
4:21PM3.50m
4:13AM3.92m
Low Tide
3:08PM0.91m
3:38AM0.95m
4:11PM0.80m
4:43AM0.80m
5:05PM0.75m
5:34AM0.72m
5:49PM0.76m
6:10AM0.71m
6:23PM0.79m
6:43AM0.72m
6:54PM0.82m
7:19AM0.73m
7:28PM0.85m
7:59AM0.76m
8:04PM0.93m
8:40AM0.82m
8:40PM1.05m
9:17AM0.87m
9:11PM1.11m
9:44AM0.86m
9:41PM1.08m
10:14AM0.76m
10:18PM0.96m
Wave
height (m) 
direction
period (s) 
0.4
SSW
3
0.4
SSW
3
0.3
SSW
3
0.3
S
2
0.2
S
2
0.2
SSW
2
0.1
SW
2
0.1
SW
2
0.1
SW
2
0.4
SSW
3
0.4
S
3
0.5
S
3
0.5
SSW
3
0.4
WSW
3
0.4
SW
3
0.4
SW
3
0.5
SSW
3
0.5
S
3
0.4
S
3
0.4
S
3
0.4
SSW
3
0.2
SSW
2
0.1
W
3
0.3
SW
2
0.2
W
2
0.4
W
3
0.2
W
4
0.2
WNW
4
0.1
NW
4
0.1
NW
3
0.1
NE
2
0.1
NE
2
0.2
N
2
0.1
N
2
0.1
W
2
0.1
W
3
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
cloud
part cloud
part cloud
part cloud
light rain
cloud
clear
part cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
rain showers
rain showers
part cloud
rain showers
clear
clear
cloud
cloud
cloud
part cloud
part cloud
rain showers
part cloud
clear
clear
some clouds
some clouds
some clouds
some clouds
cloudy
some clouds
cloudy
some clouds
some clouds
some clouds
light rain
cloudy
clear
some clouds
cloudy
some clouds
some clouds
cloudy
cloudy
cloudy
light rain
rain shwrs
rain shwrs
some clouds
rain shwrs
clear
clear
cloudy
cloudy
cloudy
some clouds
some clouds
rain shwrs
some clouds
 km/h
35
SSW
30
S
25
S
25
S
20
S
15
SSW
15
SSW
10
WNW
20
SSW
30
S
30
S
40
S
40
SSW
25
W
25
WSW
30
SSW
35
SSW
35
S
30
S
30
S
25
SSW
15
SSW
15
SE
20
WSW
15
W
30
WSW
10
NNW
15
NNE
20
NE
15
ENE
15
NE
20
NE
20
NNE
15
N
10
WSW
5
E
 mm 
1
2
3
1
3
1
max°C
6
7
7
8
10
10
8
8
8
9
9
9
9
8
7
5
6
5
5
5
6
6
4
7
7
7
7
6
3
4
3
4
4
5
5
4
Moonrise
3:59
5:16
6:33
7:47
8:55
9:48
10:27
10:54
11:12
11:25
11:35
11:43
Moonset
1:11
1:24
1:41
2:07
2:46
3:40
4:49
6:07
7:29
8:51
10:12
11:35
Sunrise
8:37
8:38
8:40
8:41
8:41
8:41
8:42
8:42
8:42
8:44
8:44
8:44
Sunset
4:01
4:01
4:01
4:01
4:02
4:02
4:02
4:04
4:04
4:05
4:06
4:07
Today's sea temperature in Tertius is
7.1° C
(Statistics for 15 Dec 1981-2005 – mean: 6.5 max: 8.0 min: 5.4°C)
Issued (local time): 12 pm Monday 15 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest