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
With the beginning of September, the average high-temperature shows a decrease, transitioning from a comfortable 16.4°C (61.5°F) in August to a fresh 10.7°C (51.3°F). In the month of September, an average of 4.3°C (39.7°F) marks the low-temperature.Humidity
The average relative humidity in September in Vaalajärvi, Finland, is 86%.Rainfall
In September, the rain falls for 15.5 days. Throughout September, 41mm (1.61") of precipitation is accumulated. In Vaalajärvi, during the entire year, the rain falls for 124.5 days and collects up to 468mm (18.43") of precipitation.Snowfall
January through June, September through December are months with snowfall in Vaalajärvi. September is the first month it typically snows in Vaalajärvi. Throughout September, in the average 0.8 snowfall days, it receives 8mm (0.31") of snow. In Vaalajärvi, during the entire year, snow falls for 143.9 days and aggregates up to 1538mm (60.55") of snow.Daylight
In September, the average length of the day in Vaalajärvi is 13h and 11min.On the first day of the month, sunrise is at 05:46 and sunset at 20:44. On the last day of September, in Vaalajärvi, sunrise is at 07:26 and sunset at 18:44 EEST.
Sunshine
In September, the average sunshine is 5.4h.UV index
The average daily maximum UV index in September in Vaalajärvi is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 2 in September translates into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Vaalajärvi in September?
What is the average humidity in September in Vaalajärvi?
How much does it rain in Vaalajärvi in September?
When does it start to snow in Vaalajärvi?
How many hours of daylight does Vaalajärvi have in September?
When are sunrise and sunset in September in Vaalajärvi?
How long on average sun shines in September in Vaalajärvi?
What is the UV index reading in September in Vaalajärvi?
Average temperature in September
Vaalajärvi, Finland
- Average high temperature in September: 10.7°C
The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (-8.8°C).
- Average low temperature in September: 4.3°C
The month with the highest average low temperature is July (10.3°C).
The coldest month (with the lowest average low temperature) is January (-14.6°C).
Average pressure in September
Vaalajärvi, Finland
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1005.2mbar).
Average wind speed in September
Vaalajärvi, Finland
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is March (11.5km/h).
The calmest month (with the lowest average wind speed) is April (9.9km/h).
Average humidity in September
Vaalajärvi, Finland
- Average humidity in September: 86%
The months with the highest relative humidity are January, February, April and December (96%).
The month with the lowest relative humidity is June (69%).
Average rainfall in September
Vaalajärvi, Finland
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is July (61mm).
The driest month (with the least rainfall) is January (29mm).
Average rainfall days in September
Vaalajärvi, Finland
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is January (2 days).
Average snowfall in September
Vaalajärvi, Finland
- Average snowfall in September: 8mm
The month with the highest snowfall is December (261mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Vaalajärvi, Finland
- Average snowfall days in September: 0.8 days
The month with the highest number of snowfall days is December (22.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Vaalajärvi, Finland
- Average daylight in September: 13h and 1min
The month with the longest days is May (Average daylight: 18h and 48min).
The month with the shortest days is June (Average daylight: 0h and 0min).
- Average sunshine in September: 5h and 2min
The month with the most sunshine is August (Average sunshine: 8h and 30min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).
Average sunshine days in September
Vaalajärvi, Finland
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is October (12.8 days).
The month with the least sunshine days is April (6.1 days).
Average UV index in September
Vaalajärvi, Finland
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Vaalajärvi, Finland
- Average cloud cover in September: 66
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is July (Cloud cover 52).
Average visibility in September
Vaalajärvi, Finland
- Average visibility in September: 7km
The months with the highest visibility are June, July and August (9km).
The months with the lowest visibility are January, February, March, April, November and December (5km).
