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 shift from August to September involves a decrease in the average high-temperature, from a refreshing 19.8°C (67.6°F) to a mild 13.6°C (56.5°F). An average nighttime temperature of 7.1°C (44.8°F) is witnessed throughout September.Humidity
In Vaajakoski, the average relative humidity in September is 83%.Rainfall
In September, the rain falls for 13.2 days. Throughout September, 34mm (1.34") of precipitation is accumulated. In Vaajakoski, during the entire year, the rain falls for 121.2 days and collects up to 403mm (15.87") of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 2mm (0.08") of snow. In Vaajakoski, Finland, during the entire year, snow falls for 96 days and aggregates up to 932mm (36.69") of snow.Daylight
In Vaajakoski, the average length of the day in September is 12h and 56min.On the first day of September in Vaajakoski, sunrise is at 06:06 and sunset at 20:26. On the last day of the month, sunrise is at 07:22 and sunset at 18:50 EEST.
Sunshine
The average sunshine in September is 6.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 3 during September translates into the following directions:
Be vigilant - Preventing sunburn is recommended. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
How many hours of daylight does Vaajakoski have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Vaajakoski, Finland
- Average high temperature in September: 13.6°C
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-5.5°C).
- Average low temperature in September: 7.1°C
The month with the highest average low temperature is July (12.2°C).
The coldest month (with the lowest average low temperature) is January (-9.7°C).
Average pressure in September
Vaajakoski, Finland
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).
Average wind speed in September
Vaajakoski, Finland
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is December (12.5km/h).
The calmest month (with the lowest average wind speed) is July (9.6km/h).
Average humidity in September
Vaajakoski, Finland
- Average humidity in September: 83%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall in September
Vaajakoski, Finland
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is July (50mm).
The driest months (with the least rainfall) are February and March (23mm).
Average rainfall days in September
Vaajakoski, Finland
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Vaajakoski, Finland
- Average snowfall in September: 2mm
The month with the highest snowfall is December (185mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Vaajakoski, Finland
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (19.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Vaajakoski, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 42min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Vaajakoski, Finland
- Average sunshine days in September: 14 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is December (9.6 days).
Average UV index in September
Vaajakoski, 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
Vaajakoski, Finland
- Average cloud cover in September: 58
The month with the most cloud cover is January (Cloud cover 83).
The months with the least cloud cover are July and August (Cloud cover 45).
Average visibility in September
Vaajakoski, 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).
