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
September's arrival comes with a decrease in the average high-temperature, moving from a comfortable 19°C (66.2°F) in August to a mild 13.3°C (55.9°F). The average temperature during September nights is registered at a chilly 7.5°C (45.5°F).Humidity
The average relative humidity in September in Keitele is 83%.Rainfall
In September, in Keitele, the rain falls for 8.3 days. Throughout September, 25mm (0.98") of precipitation is accumulated. Throughout the year, there are 84.2 rainfall days, and 304mm (11.97") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Keitele.Daylight
The average length of the day in September is 12h and 59min.On the first day of the month, sunrise is at 06:01 and sunset at 20:27. On the last day of September, sunrise is at 07:21 and sunset at 18:47 EEST.
Sunshine
In Keitele, the average sunshine in September is 6.3h.UV index
In Keitele, Finland, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Keitele in September?
What is the average humidity in September in Keitele?
How many days does it rain in September in Keitele?
When it does not snow in Keitele?
Does it snow in Keitele in September?
What is the average length of the day in September in Keitele?
What time are sunrise and sunset in September in Keitele?
How long on average sun shines in September in Keitele?
How high is the UV index in September in Keitele?
Average temperature in September
Keitele, Finland
- Average high temperature in September: 13.3°C
The warmest month (with the highest average high temperature) is July (20.8°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-9.9°C).
Average pressure in September
Keitele, Finland
- Average pressure in September: 1012.2mbar
The month with the highest atmospheric pressure is May (1014.4mbar).
The month with the lowest atmospheric pressure is December (1007.2mbar).
Average wind speed in September
Keitele, Finland
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is December (13.9km/h).
The calmest month (with the lowest average wind speed) is July (10.3km/h).
Average humidity in September
Keitele, Finland
- Average humidity in September: 83%
The months with the highest relative humidity are January and February (95%).
The months with the lowest relative humidity are May and June (68%).
Average rainfall in September
Keitele, Finland
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is July (39mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Keitele, Finland
- Average rainfall days in September: 8.3 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in September
Keitele, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (198mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Keitele, Finland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (21.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Keitele, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 12min).
The month with the shortest days is December (Average daylight: 4h and 54min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 0h and 42min).
Average sunshine days in September
Keitele, Finland
- Average sunshine days in September: 20.9 days
The month with the most sunshine days is October (22.4 days).
The month with the least sunshine days is January (9.3 days).
Average UV index in September
Keitele, 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
Keitele, Finland
- Average cloud cover in September: 57
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 44).
Average visibility in September
Keitele, Finland
- Average visibility in September: 8km
The month with the highest visibility is June (10km).
The month with the lowest visibility is January (5km).
