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 August transitions into September, Alajärvi sees a drop in the average high-temperature, transitioning from a refreshing 19.6°C (67.3°F) to a moderate 14.5°C (58.1°F). Alajärvi sees an average low-temperature of 7.2°C (45°F) during September.Humidity
In Alajärvi, the average relative humidity in September is 82%.Rainfall
In Alajärvi, in September, during 15 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Alajärvi, during the entire year, the rain falls for 134.7 days and collects up to 432mm (17.01") of precipitation.Snowfall
In Alajärvi, Finland, snow does not fall in June through September.Daylight
The average length of the day in September in Alajärvi is 12h and 58min.On the first day of the month, sunrise is at 06:12 and sunset at 20:36. On the last day of September, in Alajärvi, sunrise is at 07:31 and sunset at 18:57 EEST.
Sunshine
In September, the average sunshine in Alajärvi, Finland, is 6.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 3 in September translates into this advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Alajärvi?
What is the average humidity in September in Alajärvi?
How much does it rain in Alajärvi in September?
When it does not snow in Alajärvi?
Does it snow in Alajärvi in September?
What is the average length of the day in September in Alajärvi?
What time are sunrise and sunset in September in Alajärvi?
How many hours of sunshine does Alajärvi have in September?
What is the UV index reading in September in Alajärvi?
Average temperature in September
Alajärvi, Finland
- Average high temperature in September: 14.5°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (-4.5°C).
- Average low temperature in September: 7.2°C
The month with the highest average low temperature is July (11.8°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).
Average pressure in September
Alajärvi, 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 (1006mbar).
Average wind speed in September
Alajärvi, Finland
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is December (12.1km/h).
The calmest month (with the lowest average wind speed) is July (9.7km/h).
Average humidity in September
Alajärvi, Finland
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (94%).
The months with the lowest relative humidity are May and June (67%).
Average rainfall in September
Alajärvi, Finland
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is August (62mm).
The driest month (with the least rainfall) is February (20mm).
Average rainfall days in September
Alajärvi, Finland
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is August (18.1 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Alajärvi, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (145mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Alajärvi, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (16.3 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Alajärvi, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 6min).
The month with the shortest days is December (Average daylight: 4h and 54min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 1h and 6min).
Average sunshine days in September
Alajärvi, Finland
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is February (15 days).
The month with the least sunshine days is November (10.4 days).
Average UV index in September
Alajärvi, 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
Alajärvi, Finland
- Average cloud cover in September: 56
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is June (Cloud cover 43).
Average visibility in September
Alajärvi, Finland
- Average visibility in September: 8km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January, February and March (6km).
