September weather forecastKouva, Finland
September
Weather in September
September, the first month of the autumn in Kouva, is still a cool month, with an average temperature fluctuating between 12.4°C (54.3°F) and 5.5°C (41.9°F).Temperature
Kouva experiences a temperature shift at the start of September, with average high-temperatures adjusting from a comfortable 17.9°C (64.2°F) in August to a cool 12.4°C (54.3°F). During September, the temperature is averaged to a low of 5.5°C (41.9°F) at night.Humidity
In Kouva, the average relative humidity in September is 86%.Rainfall
In September, the rain falls for 15.5 days. Throughout September, 45mm (1.77") of precipitation is accumulated. Throughout the year, in Kouva, there are 134 rainfall days, and 527mm (20.75") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.7 snowfall days, it receives 8mm (0.31") of snow. Throughout the year, there are 133.6 snowfall days, and 1512mm (59.53") of snow is accumulated.Daylight
In Kouva, the average length of the day in September is 13h and 6min.On the first day of the month, sunrise is at 05:47 and sunset at 20:31. On the last day of September, sunrise is at 07:18 and sunset at 18:39 EEST.
Sunshine
In September, the average sunshine is 5.7h.UV index
In September, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 2 translates into these guidelines:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Experience reduced UV exposure by about half when donning a wide-brim hat. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kouva, Finland
- Average high temperature in September: 12.4°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (-7.7°C).
- Average low temperature in September: 5.5°C
The month with the highest average low temperature is July (11°C).
The coldest month (with the lowest average low temperature) is January (-12.7°C).
Average pressure in September
Kouva, Finland
- Average pressure in September: 1011.2mbar
The month with the highest atmospheric pressure is May (1014.1mbar).
The month with the lowest atmospheric pressure is December (1005.7mbar).
Average wind speed in September
Kouva, Finland
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is February (11.7km/h).
The calmest month (with the lowest average wind speed) is July (9.5km/h).
Average humidity in September
Kouva, Finland
- Average humidity in September: 86%
The months with the highest relative humidity are January, February and December (96%).
The month with the lowest relative humidity is June (69%).
Average rainfall in September
Kouva, Finland
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is July (66mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Kouva, Finland
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in September
Kouva, Finland
- Average snowfall in September: 8mm
The month with the highest snowfall is March (284mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Kouva, Finland
- Average snowfall days in September: 0.7 days
The month with the highest number of snowfall days is December (23.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Kouva, Finland
- Average daylight in September: 13h and 6min
The month with the longest days is July (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 3h and 18min).
- Average sunshine in September: 5h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 0h and 42min).
Average sunshine days in September
Kouva, Finland
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is October (12 days).
The month with the least sunshine days is April (6.8 days).
Average UV index in September
Kouva, 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
Kouva, Finland
- Average cloud cover in September: 64
The months with the most cloud cover are January and December (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 47).
Average visibility in September
Kouva, Finland
- Average visibility in September: 7km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January, February, March, April and December (5km).
