Finland in september: average Weather, Temperature and Climate, Where to go?
Weather in Finland in september 2025
Here, find the the weather forecast for september for most popular cities in Finland. These predictions are statistics for the month of september from weather reports for over 10 years. The percentage indicates the probability of having the weather mentioned.
Average weather in september in Helsinki
good weather
Weather at 6am
56°F
Partly Cloudy
31% of time
27%
23%
16%
Weather at 12pm
61°F
Clear/Sunny
30% of time
23%
23%
16%
Weather at 6pm
58°F
Clear/Sunny
33% of time
31%
18%
14%
Weather at 3am
54°F
30%
28%
20%
16%
Where to go in Finland in september?
Where to go in Finland in september: destination map
Where to go in each region in september?
| Finnish Lakeland (Tampere, Kuopio, Joensuu...) | 56°F to 59°F | 3 à 6 days | tolerable weather | |
| Lapland (Rovaniemi, Ivalo, Enontekiö...) | 43°F to 58°F | 3 à 11 days | 49°F to 56°F | bad weather* |
| North of Finland (Oulu, Kajaani, Kalajoki...) | 52°F to 58°F | 4 à 7 days | 56°F | tolerable weather* |
| South of Finland (Helsinki, Kotka, Lappeenranta...) | 59°F to 61°F | 3 à 7 days | 59°F to 61°F | tolerable weather* |
| West Coast of Finland (Turku, Vaasa, Åland...) | 58°F to 61°F | 3 à 6 days | 50°F to 58°F | tolerable weather* |
Where should you go in Finland in september when it comes to the weather?
Remember:
The climate in Finland in september ranges from good to bad depending on the region and city.
That month is not the best month to travel to in Finland. The weather in Turku, Helsinki, Kuopio, Tampere, Jyväskylä and Masku is quite correct. The sun is not there all the time and you might make you wet by rain often. However, if you don't plan a beach and relaxation trip in Finland but rather nature excursions or walking, this climate could be appropriate. In addition, there are certainly fewer tourists this month.
It's even worse in Sodankylä and Lapland (Rovaniemi) and surrounding areas where the climate is very bad. We really do not recommend you to go to these areas in september.
Climate in Finland in september
Climate in Helsinki in september
In the month of september, maximum temperature is 61°F and minimum temperature is 56°F (for an average temperature of 58°F). The climate is fairly cool in this location in the month of september, but it is bearable when dressing hot. With 3.1in over 5 days, you risk getting wet slightly for your trip. But this is reasonably and it will not be continuous.
With a correct climate, the month of september is okay (but not the best time) for traveling in this locality in Finland.
| September | |||
| Average temperature | 58°F | ||
| Highest temperature | 61°F | ||
| Lowest temperature | 56°F | ||
| Sea temperature | 60°F | ||
| Rainfall | 3.1in | ||
| Number of days with rainfall | 5 day(s) (18%) | ||
| Humidity | 84% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 46% | ||
| Length of day | 12:53 | ||
| Our opinion at whereandwhen.net | good |
Climate in Lapland (Rovaniemi) in september
In the month of september, the mean temperature in Lapland (Rovaniemi) is 50°F (maximum temperature is 54°F and minimum temperature is 47°F). The climate is quite cold in this location in the month of september, but it is tolerable by dressing cosy. With 3.1in over 5 days, rain may occur during your journey. But this is pretty reasonably and you will not be too bothered by it.
With an unfavorable weather, september is not recommended month to go there.
| September | |||
| Average temperature | 50°F | ||
| Highest temperature | 54°F | ||
| Lowest temperature | 47°F | ||
| Rainfall | 3.1in | ||
| Number of days with rainfall | 5 day(s) (18%) | ||
| Humidity | 90% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 64% | ||
| Length of day | 13:09 | ||
| Our opinion at whereandwhen.net | bad |
Climate in Tampere in september
In the month of september, the mean temperature in Tampere is 56°F (maximum temperature is 59°F and minimum temperature is 50°F). The climate is relatively fresh in that locality in this month, but it is endurable when dressing warm. With 1.7in over 3 days, rain may occur throughout your trip. But this is reasonably and you will not be too bothered by it.
With a correct climate, the month of september is okay (but not good time) for traveling in that area.
| September | |||
| Average temperature | 56°F | ||
| Highest temperature | 59°F | ||
| Lowest temperature | 50°F | ||
| Rainfall | 1.7in | ||
| Number of days with rainfall | 3 day(s) (9%) | ||
| Humidity | 89% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 55% | ||
| Length of day | 12:55 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Åland in september
In september, maximum temperature is 59°F and minimum temperature is 58°F (for an average temperature of 58°F). The climate is quite fresh in that locality in september, but it is tolerable by dressing cosy. With 2.7in over 4 days, you will experience some showers throughout your trip. But this is rather reasonably and you will not be too bothered by it.
With a correct climate, the month of september is okay (but not good time) for traveling in this city.
| September | |||
| Average temperature | 58°F | ||
| Highest temperature | 59°F | ||
| Lowest temperature | 58°F | ||
| Sea temperature | 50°F | ||
| Rainfall | 2.7in | ||
| Number of days with rainfall | 4 day(s) (15%) | ||
| Humidity | 83% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 42% | ||
| Length of day | 12:54 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Joensuu in september
In the month of september, the mean temperature in Joensuu is 54°F (maximum temperature is 58°F and minimum temperature is 50°F). The climate is rather cool in this location in september, but it is liveable by dressing cosy. With 4in over 6 days, rain may occur throughout your vacations. But this is moderate and it will not be continuous.
With proper weather, september is okay (but not good time) for traveling in this city.
| September | |||
| Average temperature | 54°F | ||
| Highest temperature | 58°F | ||
| Lowest temperature | 50°F | ||
| Rainfall | 4in | ||
| Number of days with rainfall | 6 day(s) (20%) | ||
| Humidity | 88% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 59% | ||
| Length of day | 12:58 | ||
| Our opinion at whereandwhen.net | tolerable |
All cities in Finland in september
| Helsinki in september | good weather |
| Lapland (Rovaniemi) in september | bad weather |
| Tampere in september | tolerable weather |
| Åland in september | tolerable weather |
| Joensuu in september | tolerable weather |
| Kajaani in september | tolerable weather |
| Kalajoki in september | tolerable weather |
| Kotka in september | tolerable weather |
| Kuopio in september | tolerable weather |
| Lappeenranta in september | tolerable weather |
| Oulu in september | tolerable weather |
| Turku in september | good weather |
| Vaasa in september | tolerable weather |
| Turku Archipelago (Abo Skargard) in september | good weather |
| Jyväskylä in september | tolerable weather |
| Masku in september | good weather |
| Oulanka national park (Oulangan kansallispuisto) in september | bad weather |
| Pori in september | good weather |
| Rauma in september | tolerable weather |
| Saimaa in september | tolerable weather |
| Alajärvi in september | tolerable weather |
| Ekenäs in september | good weather |
| Forssa in september | good weather |
| Hämeenlinna in september | tolerable weather |
| Hamina in september | tolerable weather |
| Hanko in september | tolerable weather |
| Haukipudas in september | tolerable weather |
| Heinola in september | tolerable weather |
| Iisalmi in september | tolerable weather |
| Ilomantsi in september | tolerable weather |
| Imatra in september | tolerable weather |
| Ingå in september | good weather |
| Jakobstad in september | tolerable weather |
| Jämsä in september | tolerable weather |
| Joutseno in september | tolerable weather |
| Kankaanpaeae in september | tolerable weather |
| Kauhajoki in september | tolerable weather |
| Keuruu in september | tolerable weather |
| Kirkkonummi in september | good weather |
| Kitee in september | tolerable weather |
| Kokkola in september | tolerable weather |
| Kouvola in september | tolerable weather |
| Kristinestad in september | tolerable weather |
| Kuhmo in september | tolerable weather |
| Kuivaniemi in september | tolerable weather |
| Kuusamo in september | bad weather |
| Lahti in september | tolerable weather |
Weather data for Finland in september:
Weather data for Finland in september is derived from an average of the weather forecast since 2009 in Finland. There is a margin of error and these forecasts are to be considered as general information only. The weather in Finland can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Finland.