September weather forecast
Jyväskylä, Finland

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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.

Frequently asked questions

What is the usual temperature for Jyväskylä in September?

During September, Jyväskylä experiences an average high-temperature of 13.6°C (56.5°F) and a low-temperature of 7.1°C (44.8°F).

What is the average humidity in September in Jyväskylä?

In September, the average relative humidity in Jyväskylä is 83%.

How much does it rain in Jyväskylä in September?

In September, in Jyväskylä, Finland, the rain falls for 13.2 days. Throughout September, 34mm (1.34") of precipitation is accumulated.

When does it start to snow in Jyväskylä?

September is the first month it typically snows in Jyväskylä, Finland. Throughout September, in the average 0.3 snowfall days, it receives 2mm (0.08") of snow.

What is the average length of the day in September in Jyväskylä?

In September, the average day length in Jyväskylä, Finland, is 12h and 56min.

When are sunrise and sunset in September in Jyväskylä?

On the first day of September in Jyväskylä, sunrise is at 06:07 and sunset at 20:26. On the last day of the month, sunrise is at 07:22 and sunset at 18:50 EEST.

How long on average sun shines in September in Jyväskylä?

The average sunshine duration in September in Jyväskylä is 6.3h.

What is the UV index intensity in September in Jyväskylä?

In September, the average daily maximum UV index in Jyväskylä is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Jyväskylä, Finland

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / Average sunshine in September - Jyväskylä, Finland
  • Average daylight in September: 12h and 5min

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 2min

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 - 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 - 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 - 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 - 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).

Jyväskylä, Finland

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