Helsinki

Southern Finland Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Southern Finland, Finland in September.

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Helsinki Turku Rauha Espoo

Planning a getaway to Southern Finland, Finland this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Southern Finland in September

Southern Finland, Finland is a region in Finland. September in Southern Finland generally has mild temperatures, with moderate precipitation.

Temperatures

You can expect mild maximum daytime temperatures of around 16°C (61°F) and nighttime temperatures around 8°C (46°F) in Helsinki.

For specific regional insights in Southern Finland, Finland, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Hämeenlinna with an average of 58 mm (2.3 in) to moderate rainfall in Taipalsaari with 74 mm (2.9 in).

Average sunshine

Sunshine amounts are decent in most places. Helsinki gets approximately 151 hours of sunlight in September, offering a reasonable amount of both bright and cloudy periods. Curious about sunnier destinations? Our weather planner makes it easy to find places worldwide with pleasant weather.

Explore Southern Finland by month

Pick a month to see the average temperature, rainfall and sunshine in Southern Finland — and find the best time to visit. (based on Helsinki)

January-1°C (30°F) February-1°C (30°F) March3°C (37°F) April9°C (48°F) May16°C (61°F) June20°C (68°F) This monthJuly23°C (73°F) August22°C (72°F) September16°C (61°F) October10°C (50°F) November5°C (41°F) December2°C (36°F)
Best Time to Visit Southern Finland →

Best Places to Visit in Southern Finland in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Southern Finland.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Southern Finland

What is the weather like in September for some of the most popular destinations in Southern Finland, Finland?

Temperature range in Southern Finland (September)

Precipitation variation in Southern Finland (September)

Helsinki

In September Helsinki generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 8°C (46°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
22°C (72°F)
16°C (61°F)
10°C (50°F)
Min temperature
12°C (54°F)
8°C (46°F)
3°C (37°F)
Monthly sun hours
230 hours
151 hours
90 hours
Monthly rainfall
79 mm (3.1 in)
64 mm (2.5 in)
65 mm (2.6 in)
Monthly rainy days
16 days
17 days
17 days
Weather conditions
perfect
tolerable
poor
Climate in Helsinki →

Turku

In September Turku generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 8°C (46°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
22°C (72°F)
17°C (63°F)
10°C (50°F)
Min temperature
12°C (54°F)
8°C (46°F)
3°C (37°F)
Monthly sun hours
228 hours
154 hours
88 hours
Monthly rainfall
83 mm (3.3 in)
64 mm (2.5 in)
66 mm (2.6 in)
Monthly rainy days
15 days
18 days
18 days
Weather conditions
perfect
tolerable
poor
Climate in Turku →

Rauha

In September Rauha generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 8°C (46°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
21°C (70°F)
16°C (61°F)
8°C (46°F)
Min temperature
12°C (54°F)
8°C (46°F)
3°C (37°F)
Monthly rainfall
82 mm (3.2 in)
66 mm (2.6 in)
66 mm (2.6 in)
Monthly rainy days
16 days
19 days
19 days
Weather conditions
perfect
tolerable
poor
Climate in Rauha →

Espoo

In September Espoo generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
21°C (70°F)
16°C (61°F)
10°C (50°F)
Min temperature
13°C (55°F)
9°C (48°F)
4°C (39°F)
Monthly sun hours
230 hours
151 hours
90 hours
Monthly rainfall
75 mm (3 in)
65 mm (2.6 in)
69 mm (2.7 in)
Monthly rainy days
16 days
18 days
18 days
Weather conditions
perfect
tolerable
poor
Climate in Espoo →

Naantali

In September Naantali generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
21°C (70°F)
16°C (61°F)
10°C (50°F)
Min temperature
12°C (54°F)
9°C (48°F)
4°C (39°F)
Monthly sun hours
228 hours
154 hours
88 hours
Monthly rainfall
81 mm (3.2 in)
66 mm (2.6 in)
70 mm (2.8 in)
Monthly rainy days
15 days
18 days
18 days
Weather conditions
perfect
tolerable
poor
Climate in Naantali →

Is your destination not in the list? Have a look at all destinations in Southern Finland, in Finland.

Popular cities in September

Day & night temperatures, rainfall and average weather in Southern Finland in September.

City Weather Day temp Night temp Rainfall
Helsinki 16°C (61°F) 8°C (46°F) 64 mm (2.5 in)
Turku 17°C (63°F) 8°C (46°F) 64 mm (2.5 in)
Rauha 16°C (61°F) 8°C (46°F) 66 mm (2.6 in)
Espoo 16°C (61°F) 9°C (48°F) 65 mm (2.6 in)
Naantali 16°C (61°F) 9°C (48°F) 66 mm (2.6 in)
Vantaa 16°C (61°F) 8°C (46°F) 64 mm (2.5 in)

Southern Finland weather in September: frequently asked questions

What is the weather like in Southern Finland, Finland in September?

Expect tolerable weather across Southern Finland, Finland in September. The popular destination of Helsinki averages 16°C (61°F) by day and 8°C (46°F) at night during this month.

What is the average temperature in Southern Finland, Finland in September?

Daytime temperatures in Helsinki peak at roughly 16°C (61°F) in September, dropping to about 8°C (46°F) overnight.

Does Southern Finland, Finland get a lot of rain in September?

September is on the drier side in Southern Finland, Finland. Helsinki averages only about 64 mm (2.5 in), with most days staying dry.

Is September a Good Time to Visit Southern Finland, Finland?

In our opinion, September is a good time to visit Southern Finland, Finland with overall tolerable weather in Helsinki. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, June, July and August provide perfect weather in Helsinki. In contrast, January, February, March, April, October, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Southern Finland.

Weather and climate has detailed information for every country in the world. Are you going to Finland? Get detailed historical weather averages for many cities in Finland.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

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