Measurements:
°C
°F
CURRENT WEATHER
00:00
Helsinki
60°F
NE 12 mph
Feels like: 60°F
Precip: 29%
World Resorts Finland Helsinki Weather

14 Day Weather Forecast

09.09
wed
DAY
60°F
NE 6 mph
precip
26%
NIGHT
62°F
NE 12 mph
precip
39%
09.10
thu
DAY
58°F
NE 19 mph
precip
45%
NIGHT
52°F
E 14 mph
precip
25%
09.11
fri
DAY
60°F
E 12 mph
precip
5%
NIGHT
56°F
NE 8 mph
precip
30%
09.12
sat
DAY
62°F
NE 16 mph
precip
46%
NIGHT
54°F
E 4 mph
precip
30%
09.13
sun
DAY
62°F
NE 12 mph
precip
19%
NIGHT
58°F
NE 10 mph
precip
26%
09.14
mon
DAY
60°F
S 6 mph
precip
24%
NIGHT
48°F
SE 6 mph
precip
24%
09.15
tue
DAY
58°F
N 6 mph
precip
8%
NIGHT
56°F
N 13 mph
precip
26%
09.16
wed
DAY
64°F
NE 13 mph
precip
19%
NIGHT
54°F
NE 7 mph
precip
30%
09.17
thu
DAY
64°F
E 4 mph
precip
3%
NIGHT
46°F
S 10 mph
precip
15%
09.18
fri
DAY
50°F
SW 10 mph
precip
20%
NIGHT
50°F
S 4 mph
precip
26%
09.19
sat
DAY
52°F
SE 3 mph
precip
36%
NIGHT
44°F
S 6 mph
precip
14%
09.20
sun
DAY
56°F
SW 3 mph
precip
4%
NIGHT
46°F
S 4 mph
precip
10%
09.21
mon
DAY
54°F
W 6 mph
precip
4%
NIGHT
46°F
SW 3 mph
precip
10%

Helsinki Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Helsinki was 60.6°F. The maximum and minimum values were 54.4°F and 64.8°F respectively.

Helsinki on the Weather Map

Best Time to Visit Helsinki
The most sunny months:
July 15 days
June 14 days
May 14 days
The most warm months:
July 70.6 °F
August 68.9 °F
June 64.7 °F
Warmest sea temperature:
August 64.4 °F
July 63.3 °F
September 59.8 °F
The most cold months:
January 25.5 °F
February 26.1 °F
December 31.9 °F
The most rainy months:
August 5 days
July 4 days
October 4 days
The most windy months:
December 12 mph
November 12 mph
January 11 mph
more details
Finland Resorts:
NAME
F°
Espoo +60
Helsinki +60
Juvaskyla +56
Kemi +56
Koli National Park +56
Lahti +58
Lappeenranta +60
Oulu +54
Pori +60
Saariselka +42
Savolinna +56
Seinajoki +56
Turku +60
Vaasa +58
Vantaa +62
all resorts
24 Hours Weather Forecast
Helsinki
Local time: 00:00
09 sep, wednesday
0300 60°F
NE
11 mph
0600 60°F
NE
13 mph
0900 62°F
NE
11 mph
1200 60°F
NE
6 mph
1500 64°F
NE
8 mph
1800 62°F
N
9 mph
2100 60°F
N
4 mph
10 sep, thursday
0000 62°F
NE
12 mph