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
With September's arrival, Vehmersalmi sees a decrease in average high-temperatures, moving from an enjoyable 19.3°C (66.7°F) in August to a moderate 13.6°C (56.5°F). Vehmersalmi records a mean low-temperature of 7.9°C (46.2°F) in September.Humidity
In September, the average relative humidity is 82%.Rainfall
In Vehmersalmi, during September, the rain falls for 12.5 days and regularly aggregates up to 25mm (0.98") of precipitation. Throughout the year, there are 106.5 rainfall days, and 384mm (15.12") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Vehmersalmi. September is the first month it typically snows in Vehmersalmi. Throughout September, in the average 0.3 snowfall days, it receives 2mm (0.08") of snow. Throughout the year, in Vehmersalmi, there are 110.8 snowfall days, and 1074mm (42.28") of snow is accumulated.Daylight
The average length of the day in September in Vehmersalmi, Finland, is 12h and 58min.On the first day of September in Vehmersalmi, sunrise is at 05:56 and sunset at 20:19. On the last day of the month, sunrise is at 07:14 and sunset at 18:41 EEST.
Sunshine
The average sunshine in September in Vehmersalmi, Finland, is 6.4h.UV index
In Vehmersalmi, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 3 during September translates into the following guidance:
Exercise caution. Those with pale skin may experience burns in less than half an hour. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What are the temperatures in Vehmersalmi in September?
What is the average humidity in September in Vehmersalmi?
How many days does it rain in September in Vehmersalmi?
When does it start snowing in Vehmersalmi?
How many hours of daylight does Vehmersalmi have in September?
What time are sunrise and sunset in September in Vehmersalmi?
How long on average sun shines in September in Vehmersalmi?
How high is the UV index in September in Vehmersalmi?
Average temperature in September
Vehmersalmi, Finland
- Average high temperature in September: 13.6°C
The warmest month (with the highest average high temperature) is July (20.9°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in September: 7.9°C
The month with the highest average low temperature is July (12.9°C).
The coldest month (with the lowest average low temperature) is January (-9.9°C).
Average pressure in September
Vehmersalmi, Finland
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Vehmersalmi, Finland
- Average wind speed in September: 13km/h
The windiest month (with the highest average wind speed) is November (15km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).
Average humidity in September
Vehmersalmi, 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 June (68%).
Average rainfall in September
Vehmersalmi, Finland
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is July (48mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Vehmersalmi, Finland
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Vehmersalmi, Finland
- Average snowfall in September: 2mm
The month with the highest snowfall is January (230mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Vehmersalmi, Finland
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is January (23.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Vehmersalmi, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 0min).
The month with the shortest days is December (Average daylight: 5h and 0min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Vehmersalmi, Finland
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is May (19.3 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in September
Vehmersalmi, Finland
- Average UV index in September: 3
The month with the highest UV index is 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
Vehmersalmi, Finland
- Average cloud cover in September: 58
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
Vehmersalmi, Finland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is February (5km).
Vehmersalmi, Finland
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