September weather forecast and climate
Muonio, Finland

Weather in September

September, the first month of the autumn, in Muonio, is also a fresh month, with temperature in the range of an average low of 3.9°C (39°F) and an average high of 10.4°C (50.7°F).

Temperature

In September, the average high-temperature drops, from a moderate 15.8°C (60.4°F) in August, to a cool 10.4°C (50.7°F). In September, the average low-temperature is 3.9°C (39°F).

Humidity

In September, the average relative humidity in Muonio is 84%.

Rainfall

In Muonio, during 14.3 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, in Muonio, there are 107 rainfall days, and 379mm (14.92") of precipitation is accumulated.

Snowfall

Months with snowfall in Muonio are January through June, September through December. September is the first month it typically snows in Muonio. Throughout September, in the average 1.5 snowfall days, it receives 11mm (0.43") of snow. Throughout the year, in Muonio, there are 133 snowfall days, and 1115mm (43.9") of snow is accumulated.

Daylight

The average length of the day in Muonio is 13.2h.

Sunshine

In Muonio, Finland, the average sunshine is 5.7h.

UV index

In September, the average daily maximum UV index in Muonio, Finland, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in September in Muonio?

In September, the average high-temperature is 10.4°C (50.7°F), and the average low-temperature is 3.9°C (39°F).

What is the average humidity in September in Muonio?

The average relative humidity in September is 84%.

How much does it rain in Muonio in September?

In Muonio, in September, it is raining for 14.3 days, with typically 36mm (1.42") of accumulated precipitation.

When does it start to snow in Muonio?

September is the first month it typically snows in Muonio. Throughout September, in the average 1.5 snowfall days, it receives 11mm (0.43") of snow.

How many hours of daylight does Muonio have in September?

The average length of the day in September in Muonio is 13.2h.

How long on average sun shines in September in Muonio?

The average sunshine in September in Muonio is 5.7h.

What is the UV index reading in September in Muonio?

The average daily maximum UV index in September in Muonio, Finland, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Muonio, Finland

Average temperature in September - Muonio, Finland
  • Average high temperature in September: 10.4°C

The warmest month (with the highest average high temperature) is July (18.2°C).
The month with the lowest average high temperature is January (-9.3°C).

  • Average low temperature in September: 3.9°C

The month with the highest average low temperature is July (9.8°C).
The coldest month (with the lowest average low temperature) is January (-15.3°C).

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Average pressure in September
Muonio, Finland

Average pressure in September - Muonio, Finland
  • Average pressure in September: 1010.4mbar

The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1004.3mbar).

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Average wind speed in September
Muonio, Finland

Average wind speed in September - Muonio, Finland
  • Average wind speed in September: 11.2km/h

The windiest month (with the highest average wind speed) is June (12.8km/h).
The calmest month (with the lowest average wind speed) is April (10.4km/h).

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Average humidity in September
Muonio, Finland

Average humidity in September - Muonio, Finland
  • Average humidity in September: 84%

Months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is June (66%).

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Average rainfall in September
Muonio, Finland

Average rainfall in September - Muonio, Finland
  • Average rainfall in September: 36mm

The wettest month (with the highest rainfall) is July (50mm).
The driest months (with the least rainfall) are February, March and April (21mm).

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Average rainfall days in September
Muonio, Finland

Average rainfall days in September - Muonio, Finland
  • Average rainfall days in September: 14.3 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (1.5 days).

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Average snowfall in September
Muonio, Finland

Average snowfall in September - Muonio, Finland
  • Average snowfall in September: 11mm

The month with the highest snowfall is December (213mm).
Months with the least snowfall are July and August (0mm).

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Average snowfall days in September
Muonio, Finland

Average snowfall days in September - Muonio, Finland
  • Average snowfall days in September: 1.5 days

The month with the highest number of snowfall days is December (21.4 days).
Months with the least snowfall days are July and August (0 days).

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Average daylight in September /
Average sunshine in September
Muonio, Finland

Average daylight in September / Average sunshine in September - Muonio, Finland
  • Average daylight in September: 13.2h

The month with the longest days is June (Average daylight: 24h).
The month with the shortest days is December (Average daylight: 0.5h).

  • Average sunshine in September: 5.7h

The month with the most sunshine is August (Average sunshine: 8.4h).
The month with the least sunshine is December (Average sunshine: 0.4h).

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Average sunshine days in September
Muonio, Finland

Average sunshine days in September - Muonio, Finland
  • Average sunshine days in September: 12.5 days

The month with the most sunshine days is October (13.8 days).
The month with the least sunshine days is April (9.4 days).

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Average UV index in September
Muonio, Finland

Average UV index in September - Muonio, Finland
  • Average UV index in September: 2

Months with the highest UV index are June and July (UV index 4).
Months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).

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Average cloud cover in September
Muonio, Finland

Average cloud cover in September - Muonio, Finland
  • Average cloud cover in September: 63

The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 54).

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Average visibility in September
Muonio, Finland

Average visibility in September - Muonio, Finland
  • Average visibility in September: 8km

The month with the highest visibility is June (10km).
The month with the lowest visibility is January (5km).

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