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
Weather in September
Temperature
September in Seinäjoki comes with a decrease in the average high-temperature, falling from an enjoyable 19.6°C (67.3°F) in August to a still refreshing 14.5°C (58.1°F). Seinäjoki records an average nighttime low-temperature of 7.2°C (45°F) throughout September.Humidity
In September, the average relative humidity in Seinäjoki is 82%.Rainfall
In Seinäjoki, during September, the rain falls for 15 days and regularly aggregates up to 33mm (1.3") of precipitation. In Seinäjoki, during the entire year, the rain falls for 134.7 days and collects up to 432mm (17.01") of precipitation.Snowfall
June through September are months without snowfall in Seinäjoki.Daylight
The average length of the day in September is 12h and 58min.On the first day of September in Seinäjoki, sunrise is at 06:17 and sunset at 20:39. On the last day of the month, sunrise is at 07:35 and sunset at 19:01 EEST.
Sunshine
The average sunshine in September in Seinäjoki is 6.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Seinäjoki in September?
What is the average humidity in September in Seinäjoki?
How much does it rain in Seinäjoki in September?
When it does not snow in Seinäjoki?
Does it snow in Seinäjoki in September?
What is the average length of the day in September in Seinäjoki?
When is the sunrise / sunset in September in Seinäjoki?
How many hours of sunshine does Seinäjoki have in September?
What is the UV index reading in September in Seinäjoki?
Average temperature in September
Seinäjoki, 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
Seinäjoki, 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
Seinäjoki, 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
Seinäjoki, 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
Seinäjoki, 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
Seinäjoki, 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
Seinäjoki, 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
Seinäjoki, 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
Seinäjoki, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 0min).
The month with the shortest days is December (Average daylight: 5h and 0min).
- 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
Seinäjoki, 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
Seinäjoki, 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
Seinäjoki, 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
Seinäjoki, 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).
Seinäjoki, Finland
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