Temperatures in September
It's cool to moderate in September in Finland with an average temperature of 16°C. Temperatures this month range from a low of 13°C to a high of 18°C. At night, you can expect temperatures between 8°C and 13°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Finland in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Finland with mild temperatures, averaging around 18°C during the day and nights close to 11°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-September
By mid-September, the average daytime temperature drops to around 16°C, with nights close to 10°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of September
By the end of September, the average daytime temperature in Finland will be around 14°C, with nights close to 9°C. A shower might show up, but overall the weather will be dry and sunny.
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Precipitation in September
In September, there is an average of 51 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 29% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Finland. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Finland in September |
UK | ||
|---|---|---|---|
 Average Temperature |
16°C | 20°C | |
 High Temp |
18°C | 22°C | |
| Low Temp |
13°C | 17°C | |
 Total Precipitation |
51 mm | 44 mm | |
| Rainy Days |
9 days | 8 days | |
August
UV index
The UV index is a maximum of 4 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is September a good time to visit Finland?
Looking for sun and warm weather? Then September isn’t the best time to be in Finland. The temperature is too low this month for a warm stay.
Temperature records for Finland in September
With 23°C, Finland hit the highest temperature in the last 10 years in September 2018. The lowest daytime temperature in this month was 5°C in 2014. The extreme night temperatures ranged from a low of -2°C to a high of 18°C.
Check out the climate of Finland for all months and discover the best travel time
The climate of Finland is based on weather data from Helsinki. Other spots, like Rovaniemi, Kuusamo or Tampere, might have different weather. You can check out all destinations in Finland for a full picture of the climate.
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Daily Temperature in September in Finland
This chart shows the average daily temperatures, both day and night, for each day in September in Finland, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Weather experiences in September in Finland
Good
Cool days with bright blue skies interspersed with drizzle. ... more
Daily Precipitation in September in Finland
The chart below shows the average daily precipitation in September for Finland, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 9 days of rain in Finland.
Daily UV Index in September in Finland
This chart shows the average daily UV index in September in Finland, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Finland Over the Years
This chart shows the average temperature in September in Finland, measured in degrees Celsius, over the past years.
Total Precipitation in September in Finland Over the Years
This chart shows the average precipitation in September in Finland, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Finland
Click on a specific day in September for detailed info on the typical weather on that day in Finland. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Finland
The weather in September in Finland is rated 4 out of 5 stars by 1 visitor. Have you been to Finland? Share your weather experience to help other visitors.
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Cool days with bright blue skies interspersed with drizzle. However, it was the perfect atmosphere for the stunning autumn colours. Definitely an unforgettable experience.— This text is automatically translated to English
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Average Weather in Finland by Month
Click on a month below to see detailed weather info for Finland. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
