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
September
Weather in September
Temperature
In Virtasalmi, the average high-temperature in September decreases from an agreeable 20.4°C (68.7°F) in August to a mild 14.3°C (57.7°F). Throughout the nights in September, an average low-temperature of 8°C (46.4°F) is noted.Humidity
In Virtasalmi, the average relative humidity in September is 82%.Rainfall
In Virtasalmi, during September, the rain falls for 14.2 days and regularly aggregates up to 35mm (1.38") of precipitation. Throughout the year, in Virtasalmi, there are 125 rainfall days, and 408mm (16.06") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Virtasalmi, Finland. September is the first month it typically snows in Virtasalmi. Throughout September, in the average 0.2 snowfall days, it receives 1mm (0.04") of snow. In Virtasalmi, during the entire year, snow falls for 114.6 days and aggregates up to 1087mm (42.8") of snow.Daylight
In Virtasalmi, the average length of the day in September is 12h and 56min.On the first day of September in Virtasalmi, Finland, sunrise is at 06:00 and sunset at 20:19. On the last day of the month, sunrise is at 07:16 and sunset at 18:43 EEST.
Sunshine
In September, the average sunshine in Virtasalmi is 6.7h.UV index
In Virtasalmi, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Virtasalmi?
What is the average humidity in September in Virtasalmi?
How much does it rain in Virtasalmi in September?
When does it start snowing in Virtasalmi?
What is the average length of the day in September in Virtasalmi?
When is the sunrise / sunset in September in Virtasalmi?
How long on average sun shines in September in Virtasalmi?
What is the UV index reading in September in Virtasalmi?
Average temperature in September
Virtasalmi, Finland
- Average high temperature in September: 14.3°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (-5.3°C).
- Average low temperature in September: 8°C
The month with the highest average low temperature is July (12.6°C).
The coldest month (with the lowest average low temperature) is January (-9.2°C).
Average pressure in September
Virtasalmi, Finland
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).
Average wind speed in September
Virtasalmi, Finland
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is December (12.9km/h).
The calmest months (with the lowest average wind speed) are July and August (10.1km/h).
Average humidity in September
Virtasalmi, Finland
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in September
Virtasalmi, Finland
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is July (44mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Virtasalmi, Finland
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in September
Virtasalmi, Finland
- Average snowfall in September: 1mm
The month with the highest snowfall is December (236mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Virtasalmi, Finland
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (24.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Virtasalmi, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Virtasalmi, Finland
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is May (16 days).
The month with the least sunshine days is December (6.5 days).
Average UV index in September
Virtasalmi, 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
Virtasalmi, Finland
- Average cloud cover in September: 56
The months with the most cloud cover are January and February (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in September
Virtasalmi, 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).
