September weather forecastSuomusjärvi, Finland
September weather for Suomusjärvi, Finland: September, the first month of the autumn in Suomusjärvi, is also a moderate month, with temperature in the range of an average high of 15°C (59°F) and an average low of 8.5°C (47.3°F). A shift in Suomusjärvi's weather is observed as August turns into September, with the average high temperature reducing from a pleasant 20.1°C (68.2°F) to a refreshing 15°C (59°F).
September
Weather in September
September, the first month of the autumn in Suomusjärvi, is also a moderate month, with temperature in the range of an average high of 15°C (59°F) and an average low of 8.5°C (47.3°F).Temperature
A shift in Suomusjärvi's weather is observed as August turns into September, with the average high temperature reducing from a pleasant 20.1°C (68.2°F) to a refreshing 15°C (59°F). The month of September records an average low-temperature of 8.5°C (47.3°F).Humidity
In September, the average relative humidity in Suomusjärvi is 83%.Rainfall
In Suomusjärvi, in September, during 12.6 rainfall days, 23mm (0.91") of precipitation is typically accumulated. In Suomusjärvi, during the entire year, the rain falls for 122 days and collects up to 276mm (10.87") of precipitation.Snowfall
In Suomusjärvi, snow does not fall in June through September.Daylight
In September, the average length of the day in Suomusjärvi, Finland, is 12h and 53min.On the first day of September, sunrise is at 06:20 and sunset at 20:30. On the last day of the month, sunrise is at 07:30 and sunset at 19:00 EEST.
Sunshine
The average sunshine in September in Suomusjärvi is 7.4h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 3 during September translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Suomusjärvi, Finland
- Average high temperature in September: 15°C
The warmest month (with the highest average high temperature) is July (21.2°C).
The month with the lowest average high temperature is January (-3.2°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is July (12.6°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).
Average pressure in September
Suomusjärvi, Finland
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.1mbar).
Average wind speed in September
Suomusjärvi, Finland
- Average wind speed in September: 12km/h
The windiest month (with the highest average wind speed) is December (15.2km/h).
The calmest month (with the lowest average wind speed) is August (11km/h).
Average humidity in September
Suomusjärvi, Finland
- Average humidity in September: 83%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Suomusjärvi, Finland
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is July (35mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in September
Suomusjärvi, Finland
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Suomusjärvi, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (91mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Suomusjärvi, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Suomusjärvi, Finland
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 7h and 24min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in September
Suomusjärvi, Finland
- Average sunshine days in September: 14 days
The month with the most sunshine days is May (16.8 days).
The month with the least sunshine days is December (10.4 days).
Average UV index in September
Suomusjärvi, Finland
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Suomusjärvi, Finland
- Average cloud cover in September: 48
The months with the most cloud cover are February and December (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Suomusjärvi, Finland
- Average visibility in September: 9km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January, February and March (7km).





