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
As September commences, the average high-temperature shows a reduction, transitioning from an agreeable 20.8°C (69.4°F) in August to a refreshing 15.1°C (59.2°F). Imatra witnesses an average low-temperature of 8.5°C (47.3°F) throughout the month of September.Humidity
In September, the average relative humidity is 82%.Rainfall
In Imatra, in September, it is raining for 13 days, with typically 36mm (1.42") of accumulated precipitation. Throughout the year, in Imatra, Finland, there are 122.1 rainfall days, and 422mm (16.61") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 55min.On the first day of the month, sunrise is at 05:58 and sunset at 20:11. On the last day of September, sunrise is at 07:10 and sunset at 18:39 EEST.
Sunshine
In Imatra, the average sunshine in September is 5.8h.UV index
In Imatra, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 2 in September translates into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Imatra?
What is the average humidity in September in Imatra?
How many days does it rain in September in Imatra?
When it does not snow in Imatra?
Does it snow in Imatra in September?
What is the average length of the day in September in Imatra?
What time are sunrise and sunset in September in Imatra?
How long on average sun shines in September in Imatra?
What is the UV index reading in September in Imatra?
Average temperature in September
Imatra, Finland
- Average high temperature in September: 15.1°C
The warmest month (with the highest average high temperature) is July (22.4°C).
The month with the lowest average high temperature is January (-4.8°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is July (13.1°C).
The coldest month (with the lowest average low temperature) is January (-8.9°C).
Average pressure in September
Imatra, Finland
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Imatra, Finland
- Average wind speed in September: 10.3km/h
The windiest month (with the highest average wind speed) is December (12.1km/h).
The calmest months (with the lowest average wind speed) are July and August (9.8km/h).
Average humidity in September
Imatra, Finland
- Average humidity in September: 82%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (65%).
Average rainfall in September
Imatra, Finland
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is August (44mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Imatra, Finland
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Imatra, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (212mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Imatra, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Imatra, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in September: 5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average sunshine days in September
Imatra, Finland
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is May (17.6 days).
The month with the least sunshine days is December (9.4 days).
Average UV index in September
Imatra, Finland
- Average UV index in September: 2
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, October, November and December (UV index 1).
Average cloud cover in September
Imatra, Finland
- Average cloud cover in September: 58
The month with the most cloud cover is February (Cloud cover 84).
The month with the least cloud cover is July (Cloud cover 43).
Average visibility in September
Imatra, 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).
