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 04:31 AM and sunset is at 10:57 PM.

Days 1–3 Weather Summary

Moderate rain (total 17mm), heaviest on Sat morning. Cool air temperatures (max 19°C on Fri night, min 15°C on Fri morning). Winds decreasing (fresh winds from the NNE on Fri morning, calm by Sat night).

Days 4–6 Weather Summary

Light rain (total 2mm), mostly falling on Sun morning. Warm air temperatures (max 20°C on Mon afternoon, min 14°C on Mon night). Wind will be generally light.

Days 7–9 Weather Summary

Some drizzle, heaviest during Wed morning. Very mild (max 19°C on Thu morning, min 14°C on Thu night). Winds increasing (light winds from the WNW on Wed afternoon, fresh winds from the NNW by Thu afternoon).

Days 10–12 Weather Summary

Light rain (total 7mm), mostly falling on Sat afternoon. Warm (max 22°C on Sun night, min 15°C on Sat afternoon). Winds increasing (light winds from the SW on Sat night, fresh winds from the SSW by Mon night).

Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
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
8:39AM0.01m
8:53PM0.02m
9:11AM0.01m
9:31PM0.02m
9:45AM0.01m
10:05PM0.02m
10:22AM0.01m
10:40PM0.01m
11:03AM0.01m
11:16PM0.01m
11:53AM0.01m
11:55PM0.01m
12:50PM0.01m
00:41AM0.01m
1:59PM0.01m
1:38AM0.01m
3:18PM0.01m
2:58AM0.01m
4:35PM0.01m
4:36AM0.01m
5:41PM0.01m
6:01AM0.01m
6:37PM0.02m
Low Tide
2:08PM0.01m
3:45AM0.01m
2:43PM0.01m
4:20AM0.01m
3:19PM0.01m
4:54AM0.01m
3:57PM0.01m
5:28AM0.01m
4:38PM0.01m
6:03AM0.01m
5:27PM0.01m
6:42AM0.01m
6:27PM0.01m
7:21AM0.01m
7:49PM0.01m
8:15AM0.01m
9:37PM0.01m
9:16AM0.01m
11:25PM0.01m
10:24AM0.01m
00:42AM0.01m
11:30AM0.01m
1:37AM0.01m
Wave
height (m) 
direction
period (s) 
0.1
N
2.0
0
E
2.0
0.4
N
3.0
0.5
NNE
3.0
0.4
NNE
3.0
0.4
NE
2.0
0.4
ENE
3.0
0.2
E
2.0
0.1
S
2.0
0.1
S
3.0
0.1
S
3.0
0.1
S
3.0
0.2
SSE
3.0
0.2
SSE
4.0
0.3
NE
2.0
0.2
NNE
2.0
0.1
E
2.0
0.1
E
2.0
0.1
S
2.0
0.1
S
2.0
0.2
SSW
2.0
0.1
SW
2.0
0.2
WNW
2.0
0.5
NW
3.0
0.3
N
3.0
0.1
E
2.0
0.2
S
2.0
0.5
S
3.0
0.7
S
4.0
0.4
S
4.0
0.4
SSW
3.0
0.4
SSW
3.0
0.5
SSW
3.0
0.5
S
3.0
0.5
S
4.0
0.9
SSW
4.0
clear
clear
clear
cloud
part cloud
rain showers
rain showers
rain showers
rain showers
light rain
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
rain showers
light rain
cloud
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
light rain
rain showers
cloud
clear
rain showers
rain showers
part cloud
clear
clear
clear
clear
cloudy
some clouds
rain shwrs
rain shwrs
rain shwrs
rain shwrs
light rain
some clouds
some clouds
clear
clear
some clouds
some clouds
clear
rain shwrs
light rain
cloudy
some clouds
clear
some clouds
clear
clear
some clouds
some clouds
some clouds
light rain
rain shwrs
cloudy
clear
rain shwrs
rain shwrs
some clouds
clear
 km/h
15
NNE
10
NNE
25
N
35
NNE
25
NNE
20
NE
20
ENE
10
ESE
5
W
5
NW
10
SE
10
E
15
NE
15
ENE
20
NE
20
NNE
10
ENE
10
NNE
10
NW
5
WNW
15
SSW
10
W
20
NW
25
NNW
20
NE
10
SE
15
S
25
S
30
S
10
SW
20
SW
20
SSW
25
SSW
25
S
25
SSW
25
SW
 mm 
6
9
1
1
1
1
1
1
3
1
2
max°C
17
18
18
16
18
19
17
17
17
15
17
19
19
20
19
16
18
18
15
16
16
19
18
15
17
18
17
17
16
17
18
20
22
16
20
19
Moonrise
11:50
11:56
11:58
11:58
11:58
11:56
11:55
11:55
11:55
11:57
12:04
Moonset
2:29
4:04
5:48
7:31
9:11
10:48
12:25
2:04
3:47
5:38
7:34
9:22
Sunrise
4:31
4:33
4:35
4:37
4:39
4:41
4:43
4:45
4:47
4:48
4:50
4:52
Sunset
10:57
10:54
10:53
10:52
10:51
10:49
10:46
10:45
10:43
10:40
10:38
10:37
Today's sea temperature in Mariehamn is 14.7 °C (Statistics for 10 Jul 1981-2005 – mean: 15.4 max: 18.1 min: 12.1°C)
Issued (local time): 2 am Thursday 10 Jul 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest