September weather forecast
Koskue, Finland

September

Weather in September

The first month of the autumn, September, is still a mild month in Koskue, Finland, with temperature in the range of an average high of 14.6°C (58.3°F) and an average low of 7.5°C (45.5°F).

Temperature

Onset of September comes with a temperature decline, the average high falling from a refreshing 19.8°C (67.6°F) in August to a mild 14.6°C (58.3°F). During the nights in September, an average low-temperature of 7.5°C (45.5°F) is observed in Koskue.

Humidity

The average relative humidity in September in Koskue is 83%.

Rainfall

The months with the least rainfall in Koskue are April and September Rain falls for 15.3 days and accumulates 34mm (1.34") of rain.

Snowfall

June through September are months without snowfall.

Daylight

In Koskue, the average length of the day in September is 12h and 57min.
On the first day of September, sunrise is at 06:18 and sunset at 20:38. On the last day of the month, sunrise is at 07:34 and sunset at 19:02 EEST.

Sunshine

In Koskue, the average sunshine in September is 6.7h.

UV index

In Koskue, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 3 in September translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

What is the temperature in September in Koskue?
The average high-temperature and low-temperature in Koskue during September are 14.6°C (58.3°F) and 7.5°C (45.5°F) respectively.
What is the average humidity in September in Koskue?
In Koskue, Finland, the average relative humidity in September is 83%.
What is the driest month in Koskue?
The months with the least rainfall in Koskue, Finland, are April and September Rain falls for 15.3 days and accumulates 34mm (1.34") of rain.
How many days does it rain in September in Koskue?
In Koskue, in September, during 15.3 rainfall days, 34mm (1.34") of precipitation is typically accumulated.
When it does not snow in Koskue?
June through September are months without snowfall.
Does it snow in Koskue in September?
In Koskue, in September, it doesn't snow. In October, it regularly snows.
How many hours of daylight does Koskue have in September?
The average day length in September in Koskue, Finland, is 12h and 57min.
When is the sunrise / sunset in September in Koskue?
On the first day of September in Koskue, Finland, sunrise is at 06:18 and sunset at 20:38. On the last day of the month, sunrise is at 07:34 and sunset at 19:02 EEST.
How many hours of sunshine does Koskue have in September?
The average sunshine duration in September in Koskue, Finland, is 6.7h.
What is the UV index reading in September in Koskue?
In September, the average daily maximum UV index in Koskue, Finland, is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Koskue, Finland
  • Average high temperature in September: 14.6°C

The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-4.3°C).

  • Average low temperature in September: 7.5°C

The month with the highest average low temperature is July (12°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).

Average pressure in September
Koskue, Finland
  • Average pressure in September: 1012.6mbar

The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1006.8mbar).

Average wind speed in September
Koskue, Finland
  • Average wind speed in September: 11.3km/h

The windiest month (with the highest average wind speed) is December (13.1km/h).
The calmest months (with the lowest average wind speed) are July and August (10.6km/h).

Average humidity in September
Koskue, Finland
  • Average humidity in September: 83%

The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is May (67%).

Average rainfall in September
Koskue, Finland
  • Average rainfall in September: 34mm

The wettest month (with the highest rainfall) is July (54mm).
The driest months (with the least rainfall) are April and September (34mm).

Average rainfall days in September
Koskue, Finland
  • Average rainfall days in September: 15.3 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (4.7 days).

Average snowfall in September
Koskue, Finland
  • Average snowfall in September: 0mm

The month with the highest snowfall is December (234mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Koskue, Finland
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Koskue, 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 12min).

  • Average sunshine in September: 6h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 1h and 48min).

Average sunshine days in September
Koskue, Finland
  • Average sunshine days in September: 12.1 days

The month with the most sunshine days is May (14.4 days).
The month with the least sunshine days is February (7.1 days).

Average UV index in September
Koskue, 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
Koskue, Finland
  • Average cloud cover in September: 56

The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are June and July (Cloud cover 44).

Average visibility in September
Koskue, 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 (6km).

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