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
Stepping into September, Kestilä observes a temperature decline, with the average high falling from August's refreshing 18.2°C (64.8°F) to a fresh 12.5°C (54.5°F). Kestilä's temperature drops to an average low of 6.3°C (43.3°F) during the nights of September.Humidity
In September, the average relative humidity is 85%.Rainfall
In Kestilä, during September, the rain falls for 15.2 days and regularly aggregates up to 31mm (1.22") of precipitation. Throughout the year, there are 123.8 rainfall days, and 364mm (14.33") of precipitation is accumulated.Snowfall
Months with snowfall 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. Throughout the year, there are 126.2 snowfall days, and 903mm (35.55") of snow is accumulated.Daylight
In Kestilä, Finland, the average length of the day in September is 13h and 2min.On the first day of the month, sunrise is at 05:58 and sunset at 20:31. On the last day of September, sunrise is at 07:22 and sunset at 18:46 EEST.
Sunshine
In September, the average sunshine is 5.8h.UV index
In Kestilä, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: An average UV index of 2 in September transforms into this advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Boost your sun resistance with garments that are densely woven yet spacious. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow?
How many hours of daylight does Kestilä have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Kestilä have in September?
What is the UV index reading in September?
Average temperature in September
Kestilä, 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
Kestilä, 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
Kestilä, 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
Kestilä, 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
Kestilä, 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
Kestilä, 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
Kestilä, 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
Kestilä, 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
Kestilä, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 21h and 0min).
The month with the shortest days is December (Average daylight: 4h and 18min).
- Average sunshine in September: 5h and 5min
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
Kestilä, 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
Kestilä, 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
Kestilä, 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
Kestilä, 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).
