Mariehamn Sea Conditions and Tide Table

Mariehamn 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 03:36 PM.

Days 1–4 Weather Summary

Mostly dry. Low air temperatures (max 7°C on Thu night, min 1°C on Sat night). Winds increasing (light winds from the NW on Fri night, severe gales from the NNW by Sat night).

Days 5–7 Weather Summary

A dusting of new snow. Icy conditions (max 5°C on Sun night, min -1°C on Tue afternoon). Mainly near gales.

Days 8–10 Weather Summary

A light covering of new snow, mostly falling on Wed night. Temperatures will be below freezing (max 0°C on Fri afternoon, min -3°C on Wed night). Winds decreasing (strong winds from the N on Wed afternoon, light winds from the NNE by Sat morning).

Days 11–13 Weather Summary

A dusting of new snow. Temperatures will be below freezing (max 0°C on Sat night, min -4°C on Sun night). Winds increasing (light winds from the NNE on Sat afternoon, near gales from the NNW by Sun night).

Thu
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
Tue
6
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
11:21PM0.01m
11:20AM0.01m
00:37AM0.01m
12:14PM0.01m
2:11AM0.01m
1:34PM0.01m
3:33AM0.01m
3:11PM0.01m
4:36AM0.01m
4:32PM0.01m
5:28AM0.01m
5:41PM0.01m
6:16AM0.02m
6:34PM0.01m
7:01AM0.02m
7:21PM0.01m
7:45AM0.02m
8:06PM0.01m
8:27AM0.02m
8:45PM0.01m
9:09AM0.02m
9:32PM0.01m
9:49AM0.02m
Low Tide
5:44PM0.01m
6:30PM0.01m
5:52AM0.01m
7:24PM0.01m
7:47AM0.01m
8:25PM0.01m
9:50AM0.01m
9:27PM0.01m
11:15AM0.01m
10:26PM0.01m
12:14PM0.01m
11:19PM0.01m
1:05PM0.01m
00:08AM0.01m
1:50PM0.01m
00:56AM0.01m
2:30PM0.01m
1:40AM0.01m
3:12PM0.01m
2:23AM0.01m
3:59PM0.01m
3:06AM0.01m
Wave
height (m) 
direction
period (s) 
1.2
W
4
0.8
NW
4
0.5
NW
3
0.4
NW
3
0.4
WNW
3
1.5
WNW
5
2.2
NW
6
1.7
NNW
5
1.1
NW
4
1.3
WNW
5
1.2
WNW
4
1.2
NW
4
1.3
NW
4
1.3
NNW
4
1.1
NW
4
1
N
4
1.1
N
4
1
N
4
0.9
NNW
4
0.5
NNE
3
0.4
ENE
3
0.5
N
3
0.3
NNW
2
0.1
NW
2
0.3
NW
2
0.1
NW
2
0.1
N
2
0.1
NE
2
0.2
NNW
2
0.6
N
3
0.7
N
3
1
N
4
1
NW
4
0.5
W
4
0.6
SW
4
0.6
SW
4
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
clear
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
light snow
cloud
light snow
cloud
light snow
cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
cloud
cloud
light snow
light snow
part cloud
cloud
part cloud
some clouds
some clouds
clear
clear
some clouds
clear
some clouds
clear
cloudy
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
light snow
cloudy
light snow
cloudy
light snow
cloudy
some clouds
clear
clear
some clouds
clear
clear
clear
clear
cloudy
cloudy
light snow
light snow
some clouds
cloudy
some clouds
 km/h
45
WNW
40
NNW
25
NNW
25
NW
20
WNW
60
NW
75
NNW
65
N
45
NNW
50
NW
45
NW
50
NNW
55
NNW
55
N
45
NNW
50
NNE
45
N
45
N
40
N
30
NE
25
NE
25
NNE
20
NNW
15
NNW
15
NNW
15
N
10
NNE
15
NNE
20
N
35
NNE
40
NNE
45
N
40
NW
20
W
25
SW
20
WSW
 mm 
max°C
6
7
7
7
6
7
3
2
2
4
5
4
0
1
1
0
0
-1
-1
-2
-2
-1
-2
-2
0
0
-1
-1
0
-1
-2
-3
-4
-3
-1
0
Moonrise
12:04
12:03
12:02
12:02
12:04
12:09
12:25
1:12
2:50
4:46
6:38
Moonset
10:13
11:45
1:20
2:59
4:46
6:42
8:39
10:12
10:54
11:07
11:12
11:13
Sunrise
9:44
9:44
9:44
9:44
9:44
9:42
9:42
9:41
9:41
9:41
9:40
9:38
Sunset
3:36
3:37
3:37
3:38
3:40
3:41
3:41
3:44
3:45
3:47
3:48
3:49
Today's sea temperature in Mariehamn is
5.4° C
(Statistics for 25 Dec 1981-2005 – mean: 3.3 max: 4.8 min: 2.1°C)
Issued (local time): 1 pm Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest