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
The onset of September is marked by a decrease in temperature, transitioning from an enjoyable 19.5°C (67.1°F) in August to a still refreshing 13.7°C (56.7°F). September nights cool to an average low-temperature of 8.7°C (47.7°F), a marginal decrease from its daytime equivalent.Humidity
The average relative humidity in September in Kesälahti is 81%.Rainfall
In Kesälahti, in September, during 14.9 rainfall days, 36mm (1.42") of precipitation is typically accumulated. In Kesälahti, during the entire year, the rain falls for 120.3 days and collects up to 399mm (15.71") of precipitation.Snowfall
July through September are months without snowfall in Kesälahti.Daylight
The average length of the day in September in Kesälahti is 12h and 56min.On the first day of the month, sunrise is at 05:51 and sunset at 20:09. On the last day of September, sunrise is at 07:06 and sunset at 18:34 EEST.
Sunshine
In Kesälahti, the average sunshine in September is 6.4h.UV index
In September, the average daily maximum UV index in Kesälahti is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 3 in September leads to these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Kesälahti in September?
What is the average humidity in September in Kesälahti?
How many days does it rain in September in Kesälahti?
When it does not snow in Kesälahti?
Does it snow in Kesälahti in September?
What is the average length of the day in September in Kesälahti?
When are sunrise and sunset in September in Kesälahti?
How many hours of sunshine does Kesälahti have in September?
What is the UV index intensity in September in Kesälahti?
Average temperature in September
Kesälahti, Finland
- Average high temperature in September: 13.7°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-5.4°C).
- Average low temperature in September: 8.7°C
The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-9.2°C).
Average pressure in September
Kesälahti, 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 (1008.7mbar).
Average wind speed in September
Kesälahti, Finland
- Average wind speed in September: 13.6km/h
The windiest month (with the highest average wind speed) is December (16.4km/h).
The calmest month (with the lowest average wind speed) is July (11.3km/h).
Average humidity in September
Kesälahti, Finland
- Average humidity in September: 81%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in September
Kesälahti, Finland
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is July (49mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Kesälahti, Finland
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in September
Kesälahti, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (164mm).
The months with the least snowfall are July, August and September (0mm).
Average snowfall days in September
Kesälahti, Finland
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is February (17.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Kesälahti, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 30min).
The month with the shortest days is December (Average daylight: 5h and 24min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 0h and 42min).
Average sunshine days in September
Kesälahti, Finland
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is May (16.9 days).
The month with the least sunshine days is December (10.9 days).
Average UV index in September
Kesälahti, 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
Kesälahti, Finland
- Average cloud cover in September: 57
The month with the most cloud cover is February (Cloud cover 85).
The month with the least cloud cover is July (Cloud cover 41).
Average visibility in September
Kesälahti, Finland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January and February (6km).
