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Monthly weather forecast in Helsinki
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun
Sunday
Mon
Monday
Tue
Tuesday
Wed
Wednesday
Thu
Thursday
Fri
Friday
Sat
Saturday
8
+16
+13
8 September, sun
+16
+13
Feels like
+13
757 mmHg
74%
6
m/s
W
+16
8 September, Sunday. day, 16°; night, 13°; overcast
9
+23
+18
9 September, mon
+23
+18
Feels like
+15
760 mmHg
64%
6.3
m/s
S
Climate normal
+16
+12
9 September, Monday. day, 23°; night, 18°; mostly clear
10
September
+22
+16
10 September, tue
+22
+16
Feels like
+13
752 mmHg
55%
9.7
m/s
SE
+18
Climate normal
+16
+12
10 September, Tuesday. day, 22°; night, 16°; overcast
11
+19
+16
11 September, wed
+19
+16
Feels like
+14
752 mmHg
77%
4.9
m/s
S
+18
Climate normal
+16
+13
11 September, Wednesday. day, 19°; night, 16°; rain
12
+19
+15
12 September, thu
+19
+15
Feels like
+16
756 mmHg
77%
5.1
m/s
S
+18
Climate normal
+16
+14
12 September, Thursday. day, 19°; night, 15°; light rain
13
+18
+16
13 September, fri
+18
+16
Feels like
+16
757 mmHg
88%
4.2
m/s
E
+18
Climate normal
+15
+12
13 September, Friday. day, 18°; night, 16°; rain
14
+19
+16
14 September, sat
+19
+16
Feels like
+15
760 mmHg
89%
4.7
m/s
NE
+19
Climate normal
+14
+12
14 September, Saturday. day, 19°; night, 16°; partly cloudy
15
+21
+17
15 September, sun
+21
+17
Feels like
+17
761 mmHg
81%
4.8
m/s
E
+19
Climate normal
+14
+12
15 September, Sunday. day, 21°; night, 17°; overcast
16
+21
+18
16 September, mon
+21
+18
Feels like
+17
762 mmHg
77%
4.4
m/s
E
+19
Climate normal
+14
+11
16 September, Monday. day, 21°; night, 18°; mostly clear
17
+20
+16
17 September, tue
+20
+16
Feels like
+17
764 mmHg
73%
4.3
m/s
SE
+19
Climate normal
+13
+11
17 September, Tuesday. day, 20°; night, 16°; mostly clear
18
+19
+14
18 September, wed
+19
+14
Feels like
+15
766 mmHg
75%
4.6
m/s
E
+19
Climate normal
+14
+11
18 September, Wednesday. day, 19°; night, 14°; clear
19
+18
+12
19 September, thu
+18
+12
Feels like
+13
767 mmHg
76%
4.7
m/s
SW
+18
Climate normal
+14
+12
19 September, Thursday. day, 18°; night, 12°; mostly clear
20
+17
+12
20 September, fri
+17
+12
Feels like
+9
764 mmHg
72%
6.4
m/s
NE
Climate normal
+14
+11
20 September, Friday. day, 17°; night, 12°; partly cloudy
21
+14
+8
21 September, sat
+14
+8
Feels like
+7
757 mmHg
65%
5.1
m/s
NW
Climate normal
+13
+11
21 September, Saturday. day, 14°; night, 8°; partly cloudy
22
+11
+13
22 September, sun
+11
+13
Feels like
+4
757 mmHg
72%
5.4
m/s
W
Climate normal
+13
+10
22 September, Sunday. day, 11°; night, 13°; partly cloudy
23
+12
+10
23 September, mon
+12
+10
Feels like
+4
760 mmHg
68%
10.9
m/s
NW
Climate normal
+12
+10
23 September, Monday. day, 12°; night, 10°; partly cloudy
24
+12
+12
24 September, tue
+12
+12
Feels like
+6
762 mmHg
60%
5.4
m/s
NW
Climate normal
+13
+9
24 September, Tuesday. day, 12°; night, 12°; partly cloudy
25
+12
+12
25 September, wed
+12
+12
Feels like
+6
755 mmHg
90%
8.7
m/s
E
Climate normal
+12
+10
25 September, Wednesday. day, 12°; night, 12°; rain
26
+14
+13
26 September, thu
+14
+13
Feels like
+9
753 mmHg
84%
6.1
m/s
SW
Climate normal
+13
+10
26 September, Thursday. day, 14°; night, 13°; light rain
27
+13
+12
27 September, fri
+13
+12
Feels like
+8
748 mmHg
86%
5.5
m/s
NW
Climate normal
+12
+10
27 September, Friday. day, 13°; night, 12°; rain
28
+13
+11
28 September, sat
+13
+11
Feels like
+8
751 mmHg
78%
5.1
m/s
W
Climate normal
+11
+10
28 September, Saturday. day, 13°; night, 11°; light rain
29
+12
+11
29 September, sun
+12
+11
Feels like
+7
753 mmHg
64%
4.4
m/s
NW
Climate normal
+12
+9
29 September, Sunday. day, 12°; night, 11°; clear
30
+11
+10
30 September, mon
+11
+10
Feels like
+5
754 mmHg
70%
5.4
m/s
SE
Climate normal
+11
+8
30 September, Monday. day, 11°; night, 10°; partly cloudy
1 October
+12
+8
1 October, tue
+12
+8
Feels like
+5
760 mmHg
68%
4.7
m/s
NE
Climate normal
+11
+8
1 October, Tuesday. day, 12°; night, 8°; clear
2
+9
+8
2 October, wed
+9
+8
Feels like
+1
764 mmHg
76%
8.4
m/s
E
Climate normal
+11
+9
2 October, Wednesday. day, 9°; night, 8°; mostly clear
3
+9
+10
3 October, thu
+9
+10
Feels like
−1
758 mmHg
85%
13.4
m/s
SE
Climate normal
+12
+9
3 October, Thursday. day, 9°; night, 10°; rain
4
+12
+12
4 October, fri
+12
+12
Feels like
+3
754 mmHg
91%
11.4
m/s
SE
Climate normal
+10
+9
4 October, Friday. day, 12°; night, 12°; rain
5
+13
+12
5 October, sat
+13
+12
Feels like
+9
760 mmHg
88%
4
m/s
SE
Climate normal
+10
+7
5 October, Saturday. day, 13°; night, 12°; light rain
6
+13
+12
6 October, sun
+13
+12
Feels like
+11
766 mmHg
79%
3
m/s
SW
Climate normal
+10
+8
6 October, Sunday. day, 13°; night, 12°; clear
7
+13
+12
7 October, mon
+13
+12
Feels like
+8
768 mmHg
83%
7.6
m/s
S
Climate normal
+10
+8
7 October, Monday. day, 13°; night, 12°; mostly clear
8
+12
+11
8 October, tue
+12
+11
Feels like
+6
766 mmHg
83%
6.4
m/s
S
Climate normal
+9
+7
8 October, Tuesday. day, 12°; night, 11°; partly cloudy
9
+13
+12
9 October, wed
+13
+12
Feels like
+8
766 mmHg
78%
4.9
m/s
SW
Climate normal
+9
+7
9 October, Wednesday. day, 13°; night, 12°; partly cloudy
Average data for 10 years
Next, the average data for 10 years
10
+9
+7
10 October, thu
+9
+7
Feels like
+4
756 mmHg
81%
6
m/s
NW
+11
10 October, Thursday. day, 9°; night, 7°; rain
11
+8
+6
11 October, fri
+8
+6
Feels like
+3
756 mmHg
81%
5.9
m/s
N
+11
11 October, Friday. day, 8°; night, 6°; overcast
12
+8
+6
12 October, sat
+8
+6
Feels like
+3
759 mmHg
79%
5.8
m/s
N
+11
12 October, Saturday. day, 8°; night, 6°; partly cloudy
Average for 30 days
10
sunny days
9
days with precipitation
11
cloudy days
10 sunny days; 9 days with precipitation; 11 cloudy days;
77
%
air humidity
6.1
m/s
Wind
E
31
mm of precipitation
(5% of annual average)
+19
°C
Water temperature
air humidity 77%; 31 millimeters of precipitation (5% of annual average); Wind easterly 6.1 Meters per second; Water temperature +19°
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
SE
S
S
E
NE
E
E
SE
E
SW
NE
NW
W
NW
NW
E
SW
NW
W
NW
SE
NE
E
SE
SE
SE
SW
S
S
SW
10
Average data for 10 years
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
October
2
3
4
5
6
7
8
9
Daytime temperature
Night-time temperature
