Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Start of September brings a shift in the average high-temperature, falling from August's comfortable 18.1°C (64.6°F) to a cool 12.1°C (53.8°F). Vieki, during September nights, observes an average temperature of 6.5°C (43.7°F).Humidity
In Vieki, the average relative humidity in September is 85%.Rainfall
In Vieki, in September, it is raining for 15.5 days, with typically 37mm (1.46") of accumulated precipitation. Throughout the year, there are 118.2 rainfall days, and 444mm (17.48") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows in Vieki. Throughout September, in the average 0.8 snowfall days, it receives 5mm (0.2") of snow. Throughout the year, in Vieki, there are 136.9 snowfall days, and 1269mm (49.96") of snow is accumulated.Daylight
In Vieki, the average length of the day in September is 13h and 0min.On the first day of September, sunrise is at 05:47 and sunset at 20:14. On the last day of the month, sunrise is at 07:08 and sunset at 18:34 EEST.
Sunshine
In Vieki, Finland, the average sunshine in September is 5.1h.UV index
In Vieki, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 2 during September morphs into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What are September temperatures in Vieki?
What is the average humidity in September in Vieki?
How many days does it rain in September in Vieki?
When does it start snowing in Vieki?
What is the average length of the day in September in Vieki?
When are sunrise and sunset in September in Vieki?
How long on average sun shines in September in Vieki?
What is the UV index reading in September in Vieki?
Average temperature in September
Vieki, Finland
- Average high temperature in September: 12.1°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The month with the lowest average high temperature is January (-7.6°C).
- Average low temperature in September: 6.5°C
The month with the highest average low temperature is July (11.8°C).
The coldest month (with the lowest average low temperature) is January (-12.2°C).
Average pressure in September
Vieki, Finland
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Vieki, Finland
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is November (14.3km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).
Average humidity in September
Vieki, Finland
- Average humidity in September: 85%
The months with the highest relative humidity are January and February (96%).
The month with the lowest relative humidity is June (68%).
Average rainfall in September
Vieki, Finland
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is July (57mm).
The driest month (with the least rainfall) is February (28mm).
Average rainfall days in September
Vieki, Finland
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is January (1.3 days).
Average snowfall in September
Vieki, Finland
- Average snowfall in September: 5mm
The month with the highest snowfall is December (226mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Vieki, Finland
- Average snowfall days in September: 0.8 days
The month with the highest number of snowfall days is December (24.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Vieki, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 24min).
The month with the shortest days is December (Average daylight: 4h and 42min).
- Average sunshine in September: 5h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 0min).
Average sunshine days in September
Vieki, Finland
- Average sunshine days in September: 10.6 days
The months with the most sunshine days are May and August (13.1 days).
The month with the least sunshine days is April (7.3 days).
Average UV index in September
Vieki, Finland
- Average UV index in September: 2
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Vieki, Finland
- Average cloud cover in September: 63
The month with the most cloud cover is December (Cloud cover 86).
The month with the least cloud cover is July (Cloud cover 45).
Average visibility in September
Vieki, Finland
- Average visibility in September: 8km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January and February (5km).
Vieki, Finland
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