Mariehamn (Finland) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 0° Celsius; Minimum nighttime temperature: -3° Celsius;
Maximum daytime temperature: 0° Celsius; Minimum nighttime temperature: -3° Celsius; -
Maximum daytime temperature: -3° Celsius; Minimum nighttime temperature: -5° Celsius;
Maximum daytime temperature: -3° Celsius; Minimum nighttime temperature: -5° Celsius;
-
Maximum daytime temperature: -4° Celsius; Minimum nighttime temperature: -5° Celsius;
Maximum daytime temperature: -4° Celsius; Minimum nighttime temperature: -5° Celsius;
-
Maximum daytime temperature: -4° Celsius; Minimum nighttime temperature: -8° Celsius;
Maximum daytime temperature: -4° Celsius; Minimum nighttime temperature: -8° Celsius; -
Maximum daytime temperature: -4° Celsius; Minimum nighttime temperature: -8° Celsius;
Maximum daytime temperature: -4° Celsius; Minimum nighttime temperature: -8° Celsius; -
Maximum daytime temperature: -3° Celsius; Minimum nighttime temperature: -7° Celsius;
Maximum daytime temperature: -3° Celsius; Minimum nighttime temperature: -7° Celsius;
-
Maximum daytime temperature: -2° Celsius; Minimum nighttime temperature: -6° Celsius;
Maximum daytime temperature: -2° Celsius; Minimum nighttime temperature: -6° Celsius;
Overcast changing to light snow by late morning.
Sunrise:
Sunset:
- UV
No pollution data.
No pollen data.
7 day forecast for Mariehamn
Today (31 December 2025)
| Time |
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
|
|
|
|
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
20%
|
20%
|
20%
|
30%
|
60%
|
70%
|
80%
|
80%
|
80%
|
80%
|
70%
|
70%
|
80%
|
80%
|
80%
|
80%
|
80%
|
| Temperature |
-3°
|
-2°
|
-2°
|
-2°
|
-2°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
0°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-2°
|
-2°
|
-2°
|
| Feels like temperature (°C) |
-7°
|
-7°
|
-7°
|
-7°
|
-7°
|
-7°
|
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-8°
|
-9°
|
-9°
|
-9°
|
-9°
|
-10°
|
-10°
|
-10°
|
-11°
|
-11°
|
-11°
|
| Wind direction and speed |
SE
7
|
SSE
9
|
SSE
11
|
SSE
12
|
SSE
12
|
SSE
14
|
SSE
16
|
SSE
19
|
SSE
21
|
SE
22
|
SE
24
|
SE
26
|
SE
27
|
SE
29
|
SE
31
|
ESE
32
|
ESE
32
|
ESE
33
|
ESE
33
|
ESE
33
|
ESE
33
|
ESE
32
|
E
32
|
| Wind gust (mph) |
16
|
18
|
20
|
22
|
25
|
28
|
33
|
36
|
37
|
40
|
45
|
48
|
50
|
51
|
56
|
56
|
57
|
57
|
56
|
55
|
54
|
54
|
53
|
| Visibility |
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
P
|
P
|
VP
|
VP
|
VP
|
P
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
| Humidity |
62%
|
62%
|
61%
|
59%
|
60%
|
63%
|
67%
|
73%
|
79%
|
82%
|
86%
|
89%
|
95%
|
100%
|
99%
|
99%
|
98%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
| UV | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - |
Friday (1 January 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
≥95%
|
90%
|
≥95%
|
≥95%
|
≥95%
|
90%
|
90%
|
90%
|
90%
|
80%
|
80%
|
70%
|
80%
|
80%
|
| Temperature (°C) |
-2°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-3°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
| Feels like temperature (°C) |
-11°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
| Wind direction and speed (mph) |
E
31
|
E
30
|
E
31
|
E
30
|
E
30
|
E
30
|
E
30
|
E
30
|
ENE
29
|
ENE
28
|
ENE
28
|
ENE
28
|
ENE
28
|
ENE
27
|
ENE
27
|
ENE
26
|
ENE
26
|
ENE
25
|
ENE
25
|
NE
25
|
NE
25
|
NE
24
|
NE
24
|
NE
24
|
| Wind gust (mph) |
52
|
51
|
51
|
50
|
50
|
50
|
49
|
49
|
48
|
48
|
46
|
46
|
45
|
44
|
44
|
43
|
43
|
42
|
42
|
42
|
41
|
41
|
41
|
41
|
| Visibility (description) |
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
P
|
P
|
P
|
P
|
P
|
| Humidity |
100%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
98%
|
98%
|
98%
|
98%
|
| UV | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - |
Saturday (2 January 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
80%
|
80%
|
70%
|
70%
|
70%
|
70%
|
60%
|
60%
|
50%
|
50%
|
50%
|
50%
|
40%
|
40%
|
50%
|
40%
|
40%
|
40%
|
30%
|
30%
|
30%
|
30%
|
20%
|
20%
|
| Temperature (°C) |
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
| Feels like temperature (°C) |
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-14°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-13°
|
-12°
|
-12°
|
| Wind direction and speed (mph) |
NE
24
|
NE
24
|
NE
24
|
NE
24
|
NE
23
|
NE
23
|
NE
23
|
NE
23
|
NE
22
|
NE
22
|
NE
22
|
NE
21
|
NE
21
|
NE
21
|
NE
21
|
NE
21
|
NE
21
|
NE
20
|
NE
19
|
NE
19
|
NE
19
|
NE
18
|
NE
18
|
NE
17
|
| Wind gust (mph) |
41
|
41
|
41
|
40
|
39
|
39
|
39
|
39
|
38
|
37
|
37
|
37
|
36
|
36
|
36
|
35
|
35
|
35
|
34
|
33
|
32
|
31
|
30
|
30
|
| Visibility (description) |
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
M
|
M
|
P
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
| Humidity |
98%
|
98%
|
99%
|
98%
|
97%
|
98%
|
97%
|
97%
|
96%
|
95%
|
94%
|
94%
|
94%
|
93%
|
93%
|
93%
|
93%
|
92%
|
91%
|
91%
|
91%
|
91%
|
90%
|
91%
|
| UV | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - |
Sunday (3 January 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
|
| Chance of precipitation |
30%
|
30%
|
30%
|
30%
|
30%
|
20%
|
10%
|
10%
|
10%
|
20%
|
10%
|
20%
|
20%
|
10%
|
10%
|
10%
|
20%
|
20%
|
10%
|
10%
|
10%
|
10%
|
10%
|
20%
|
| Temperature (°C) |
-5°
|
-5°
|
-5°
|
-4°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-4°
|
-4°
|
-4°
|
-4°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
-5°
|
| Feels like temperature (°C) |
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-11°
|
-11°
|
-11°
|
-11°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
-12°
|
| Wind direction and speed (mph) |
NE
17
|
NE
17
|
NE
17
|
NE
17
|
NNE
16
|
NNE
16
|
NNE
16
|
NNE
16
|
NNE
15
|
NNE
15
|
NNE
15
|
NNE
15
|
NNE
16
|
NNE
15
|
NNE
15
|
NNE
15
|
NNE
14
|
NNE
14
|
NNE
13
|
NNE
13
|
NNE
13
|
NNE
13
|
NNE
13
|
N
13
|
| Wind gust (mph) |
30
|
30
|
29
|
29
|
28
|
27
|
26
|
26
|
26
|
25
|
26
|
27
|
26
|
26
|
25
|
25
|
24
|
24
|
23
|
22
|
22
|
22
|
23
|
22
|
| Visibility (description) |
M
|
M
|
M
|
M
|
M
|
M
|
M
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
91%
|
91%
|
91%
|
91%
|
90%
|
89%
|
90%
|
86%
|
86%
|
87%
|
83%
|
84%
|
83%
|
81%
|
82%
|
80%
|
80%
|
81%
|
78%
|
78%
|
78%
|
77%
|
77%
|
77%
|
| UV | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - |
Monday (4 January 2026)
| Time |
00:00
|
01:00
|
02:00
|
05:00
|
08:00
|
11:00
|
14:00
|
17:00
|
20:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
20%
|
20%
|
20%
|
10%
|
10%
|
<5%
|
10%
|
10%
|
10%
|
<5%
|
| Temperature (°C) |
-5°
|
-6°
|
-6°
|
-6°
|
-6°
|
-7°
|
-5°
|
-6°
|
-7°
|
-6°
|
| Feels like temperature (°C) |
-12°
|
-12°
|
-13°
|
-12°
|
-13°
|
-13°
|
-11°
|
-12°
|
-13°
|
-13°
|
| Wind direction and speed (mph) |
N
13
|
N
12
|
N
12
|
N
11
|
N
10
|
NNE
10
|
NNW
10
|
NW
10
|
WNW
10
|
WNW
11
|
| Wind gust (mph) |
21
|
21
|
22
|
19
|
17
|
18
|
19
|
19
|
20
|
20
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
77%
|
78%
|
77%
|
77%
|
76%
|
74%
|
74%
|
74%
|
76%
|
76%
|
| UV | - | - | - | - | - | 1 | 1 | - | - | - |
Tuesday (5 January 2026)
| Time |
02:00
|
05:00
|
08:00
|
11:00
|
14:00
|
17:00
|
20:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
20%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
-5°
|
-5°
|
-5°
|
-5°
|
-4°
|
-4°
|
-5°
|
-4°
|
| Feels like temperature (°C) |
-12°
|
-12°
|
-12°
|
-11°
|
-10°
|
-11°
|
-11°
|
-11°
|
| Wind direction and speed (mph) |
WNW
12
|
WNW
13
|
NNW
13
|
N
12
|
N
13
|
N
13
|
N
13
|
N
14
|
| Wind gust (mph) |
22
|
24
|
23
|
22
|
22
|
23
|
24
|
24
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
77%
|
77%
|
80%
|
76%
|
81%
|
83%
|
83%
|
79%
|
| UV | - | - | - | 1 | 1 | - | - | - |
Wednesday (6 January 2026)
| Time |
02:00
|
05:00
|
08:00
|
11:00
|
14:00
|
17:00
|
20:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
 |
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
10%
|
20%
|
10%
|
<5%
|
| Temperature (°C) |
-5°
|
-4°
|
-4°
|
-5°
|
-4°
|
-4°
|
-5°
|
-4°
|
| Feels like temperature (°C) |
-11°
|
-11°
|
-11°
|
-11°
|
-10°
|
-11°
|
-12°
|
-11°
|
| Wind direction and speed (mph) |
NNE
13
|
N
13
|
NNE
13
|
NE
13
|
NNE
12
|
NNE
14
|
N
13
|
NNE
13
|
| Wind gust (mph) |
23
|
22
|
24
|
22
|
23
|
23
|
25
|
25
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
81%
|
78%
|
81%
|
78%
|
80%
|
78%
|
79%
|
80%
|
| UV | - | - | - | 1 | 1 | - | - | - |
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Forecast for 1am (UTC+2) Thursday
Updated 18:39 (UTC) on Wed 31 Dec 2025
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