September weather forecastVaala, Finland
September
Weather in September
The first month of the autumn, September, is still a cool month in Vaala, Finland, with an average temperature ranging between max 12.5°C (54.5°F) and min 6.3°C (43.3°F).Temperature
Start of September brings a shift in the average high-temperature, falling from August's refreshing 18.2°C (64.8°F) to a fresh 12.5°C (54.5°F). Vaala observes an average low-temperature of 6.3°C (43.3°F) during September nights.Humidity
In September, the average relative humidity in Vaala is 85%.Rainfall
In Vaala, during September, the rain falls for 15.2 days and regularly aggregates up to 31mm (1.22") of precipitation. In Vaala, during the entire year, the rain falls for 123.8 days and collects up to 364mm (14.33") of precipitation.Snowfall
Months with snowfall in Vaala, Finland, are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.6 snowfall days, it receives 9mm (0.35") of snow. In Vaala, during the entire year, snow falls for 126.2 days and aggregates up to 903mm (35.55") of snow.Daylight
In September, the average length of the day is 13h and 2min.On the first day of September, sunrise is at 05:55 and sunset at 20:29. On the last day of the month, sunrise is at 07:20 and sunset at 18:44 EEST.
Sunshine
In September, the average sunshine in Vaala, Finland, is 5.8h.UV index
In Vaala, 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 exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 2 transforms into these recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Vaala, Finland
- Average high temperature in September: 12.5°C
The warmest month (with the highest average high temperature) is July (20.5°C).
The month with the lowest average high temperature is January (-7.3°C).
- Average low temperature in September: 6.3°C
The month with the highest average low temperature is July (11.6°C).
The coldest month (with the lowest average low temperature) is January (-11.6°C).
Average pressure in September
Vaala, Finland
- Average pressure in September: 1012mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1006.7mbar).
Average wind speed in September
Vaala, Finland
- Average wind speed in September: 11.7km/h
The windiest months (with the highest average wind speed) are November and December (13.1km/h).
The calmest month (with the lowest average wind speed) is July (10km/h).
Average humidity in September
Vaala, 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 (69%).
Average rainfall in September
Vaala, Finland
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is July (48mm).
The driest months (with the least rainfall) are February and April (21mm).
Average rainfall days in September
Vaala, Finland
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Vaala, Finland
- Average snowfall in September: 9mm
The month with the highest snowfall is March (160mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Vaala, Finland
- Average snowfall days in September: 0.6 days
The month with the highest number of snowfall days is December (23.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Vaala, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 21h and 12min).
The month with the shortest days is December (Average daylight: 4h and 12min).
- Average sunshine in September: 5h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 0h and 42min).
Average sunshine days in September
Vaala, Finland
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is May (13 days).
The month with the least sunshine days is April (7.6 days).
Average UV index in September
Vaala, Finland
- Average UV index in September: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Vaala, Finland
- Average cloud cover in September: 63
The months with the most cloud cover are January, February and December (Cloud cover 84).
The month with the least cloud cover is July (Cloud cover 46).
Average visibility in September
Vaala, 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).
