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 06:46 AM and sunset is at 08:38 PM.

Days 1–3 Weather Summary

Mostly dry. Icy conditions (max 5°C on Wed night, min 0°C on Thu morning). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 10°C on Mon night, min 3°C on Sat morning). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 8mm), mostly falling on Thu afternoon. Very mild (max 10°C on Tue morning, min 2°C on Thu afternoon). Winds increasing (calm on Wed night, fresh winds from the SSW by Thu night).

Days 10–12 Weather Summary

Light rain (total 9mm), mostly falling on Sat afternoon. Temperatures will be slightly above freezing (max 4°C on Fri afternoon, min 3°C on Fri morning). Winds increasing (light winds from the WSW on Fri night, fresh winds from the ESE by Sat afternoon).

Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thu
23
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
Wave Height Map
High Tide
11:32AM0.01m
00:43AM0.01m
11:33AM0.01m
1:53AM0.01m
3:50AM0.01m
6:29PM0.01m
6:44PM0.01m
6:11AM0.01m
7:08PM0.01m
6:52AM0.01m
7:35PM0.01m
7:29AM0.01m
8:05PM0.01m
8:05AM0.01m
8:37PM0.01m
8:42AM0.01m
9:12PM0.01m
9:19AM0.01m
9:47PM0.02m
9:57AM0.01m
10:27PM0.02m
10:36AM0.01m
11:09PM0.02m
11:14AM0.01m
11:58PM0.02m
12:07PM0.01m
00:56AM0.01m
Low Tide
6:51AM0.01m
5:14PM0.01m
8:20AM0.01m
5:31PM0.01m
12:48PM0.01m
9:39PM0.01m
12:54PM0.01m
11:36PM0.01m
1:09PM0.01m
00:35AM0.01m
1:28PM0.01m
1:22AM0.01m
1:50PM0.01m
2:05AM0.01m
2:17PM0.00m
2:43AM0.01m
2:41PM0.00m
3:30AM0.01m
3:16PM0.00m
4:10AM0.01m
3:48PM0.01m
5:00AM0.01m
4:22PM0.01m
5:53AM0.01m
4:58PM0.01m
6:57AM0.01m
5:38PM0.01m
Wave
height (m) 
direction
period (s) 
0.5
N
3
0.3
NNE
2
0.2
NNE
2
0.1
E
2
0.1
E
2
0.1
SE
2
0.2
SSE
2
0.2
SSE
2
0.1
SE
2
0.3
E
2
0.2
ESE
2
0.2
ESE
2
0.2
ESE
2
0.4
SE
3
0.2
ESE
2
0.2
SSE
3
0.2
SSE
2
0.3
ESE
2
0.3
ESE
2
0.2
ESE
3
0.1
SE
3
0.2
N
2
0.1
NW
2
0
E
1
0.2
ESE
2
0.7
ESE
4
0.6
S
4
0.8
SSW
4
0.5
S
4
0.3
SSW
4
0.3
SSW
4
0.4
SSE
3
0.9
S
5
0.5
S
4
0.5
S
4
0.6
S
4
0.7
S
4
0.7
S
4
0.4
SSE
4
1.1
SE
4
0.6
S
4
0.3
S
3
0.2
S
3
0.2
SSW
3
0.3
NW
2
0.3
WNW
2
0.3
NW
2
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
light rain
cloud
cloud
cloud
cloud
mod rain
part cloud
cloud
cloud
part cloud
cloud
light rain
light rain
cloud
rain showers
part cloud
part cloud
clear
light rain
rain showers
clear
clear
cloud
cloud
light rain
light rain
light rain
clear
clear
clear
clear
clear
some clouds
cloudy
some clouds
some clouds
clear
clear
clear
clear
clear
some clouds
some clouds
clear
some clouds
clear
clear
light rain
cloudy
cloudy
cloudy
cloudy
mod rain
some clouds
cloudy
cloudy
some clouds
cloudy
light rain
light rain
cloudy
rain shwrs
some clouds
some clouds
clear
light rain
rain shwrs
clear
clear
cloudy
cloudy
light rain
light rain
light rain
 km/h
25
NNE
20
N
15
ENE
10
ENE
15
ESE
15
SE
15
SSE
15
SSE
10
SE
15
E
15
ESE
15
E
20
E
20
ESE
15
SE
15
ESE
15
SE
20
E
20
ESE
10
E
5
ENE
15
N
10
WNW
10
SSE
20
E
30
ESE
30
SSW
25
SW
20
SW
15
WSW
15
SW
20
SE
30
S
15
SSE
20
SSE
20
SSE
25
S
25
S
20
E
40
ESE
20
S
5
ESE
10
NNW
15
NW
20
NW
20
NW
20
NW
 mm 
2
6
4
4
1
2
5
2
1
2
max°C
2
4
5
0
1
1
2
2
3
3
4
7
7
7
7
7
6
10
10
10
7
4
5
5
4
3
4
3
4
4
4
4
4
4
4
3
4
5
5
4
4
4
3
5
5
3
3
Moonrise
4:50
5:28
5:43
5:49
5:51
5:52
5:51
5:50
5:50
5:50
5:51
5:54
6:05
6:35
7:50
9:36
Moonset
7:39
8:47
10:18
11:54
1:31
3:06
4:41
6:18
7:59
9:47
11:42
1:40
3:26
4:27
4:49
Sunrise
6:46
6:43
6:39
6:37
6:33
6:31
6:28
6:24
6:22
6:18
6:16
6:13
6:09
6:07
6:03
6:01
Sunset
8:38
8:42
8:44
8:46
8:49
8:52
8:53
8:57
8:59
9:01
9:04
9:07
9:08
9:10
9:14
9:15
Today's sea temperature in Mariehamn is
1.8° C
(Statistics for 08 Apr 1981-2005 – mean: 2.2 max: 3.0 min: 0.5°C)
Issued (local time): 8 am Wednesday 08 Apr 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest