September weather forecastJyväskylä, Finland
September
Weather in September
September in Jyväskylä, Finland signals a shift in season as fall takes over the summer's reins. During this month, the city showcases an extravagant palette of autumn hues, turning it into a picturesque landscape. However, a gradual dip in the temperatures hints at the approaching winter. An early shower or a gust of wind may serve as gentle reminders of this transition. Nevertheless, the city sustains its allure, enticing both locals and visitors alike.Temperature
The shift from August to September in Jyväskylä corresponds with a decrease in the average high-temperature, down to a moderate 13.6°C (56.5°F) from an enjoyable 19.8°C (67.6°F). Throughout September, Jyväskylä registers a consistent average low-temperature of 7.1°C (44.8°F).Humidity
In September, the average relative humidity in Jyväskylä is 83%.Rainfall
In September, the rain falls for 13.2 days. Throughout September, 34mm (1.34") of precipitation is accumulated. In Jyväskylä, during the entire year, the rain falls for 121.2 days and collects up to 403mm (15.87") of precipitation.Snowfall
January through June, September through December are months with snowfall in Jyväskylä. September is the first month it typically snows in Jyväskylä. Throughout September, in the average 0.3 snowfall days, it receives 2mm (0.08") of snow. Throughout the year, there are 96 snowfall days, and 932mm (36.69") of snow is accumulated.Daylight
In Jyväskylä, the average length of the day in September is 12h and 56min.On the first day of the month, sunrise is at 06:07 and sunset at 20:26. On the last day of September, in Jyväskylä, Finland, sunrise is at 07:22 and sunset at 18:50 EEST.
Sunshine
In September, the average sunshine in Jyväskylä, Finland, is 6.3h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 3 during September translates into these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jyväskylä, Finland
- Average high temperature in September: 13.6°C
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-5.5°C).
- Average low temperature in September: 7.1°C
The month with the highest average low temperature is July (12.2°C).
The coldest month (with the lowest average low temperature) is January (-9.7°C).
Average pressure in September
Jyväskylä, Finland
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).
Average wind speed in September
Jyväskylä, Finland
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is December (12.5km/h).
The calmest month (with the lowest average wind speed) is July (9.6km/h).
Average humidity in September
Jyväskylä, Finland
- Average humidity in September: 83%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall in September
Jyväskylä, Finland
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is July (50mm).
The driest months (with the least rainfall) are February and March (23mm).
Average rainfall days in September
Jyväskylä, Finland
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Jyväskylä, Finland
- Average snowfall in September: 2mm
The month with the highest snowfall is December (185mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Jyväskylä, Finland
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (19.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Jyväskylä, Finland
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 19h and 42min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in September: 6h and 18min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Jyväskylä, Finland
- Average sunshine days in September: 14 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is December (9.6 days).
Average UV index in September
Jyväskylä, Finland
- Average UV index in September: 3
The month with the highest UV index is 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
Jyväskylä, Finland
- Average cloud cover in September: 58
The month with the most cloud cover is January (Cloud cover 83).
The months with the least cloud cover are July and August (Cloud cover 45).
Average visibility in September
Jyväskylä, Finland
- Average visibility in September: 8km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (5km).
