September weather forecastIlmajoki, Finland
September
Weather in September
The first month of the autumn, September, is still a mild month in Ilmajoki, Finland, with an average temperature varying between 14.5°C (58.1°F) and 7.2°C (45°F).Temperature
With September's onset, the weather shows a temperature decrease, transitioning from a comfortable 19.6°C (67.3°F) in August to a moderate 14.5°C (58.1°F). The average nighttime temperature in Ilmajoki, Finland, lowers to a chilly 7.2°C (45°F) throughout September.Humidity
The average relative humidity in September is 82%.Rainfall
In September, the rain falls for 15 days. Throughout September, 33mm (1.3") of precipitation is accumulated. In Ilmajoki, during the entire year, the rain falls for 134.7 days and collects up to 432mm (17.01") of precipitation.Snowfall
In Ilmajoki, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 58min.On the first day of the month, sunrise is at 06:18 and sunset at 20:40. On the last day of September, sunrise is at 07:36 and sunset at 19:03 EEST.
Sunshine
The average sunshine in September is 6.9h.UV index
The average daily maximum UV index in September in Ilmajoki is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ilmajoki, 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
Ilmajoki, 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
Ilmajoki, 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
Ilmajoki, 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
Ilmajoki, 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
Ilmajoki, 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
Ilmajoki, 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
Ilmajoki, 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
Ilmajoki, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 19h and 54min).
The month with the shortest days is December (Average daylight: 5h and 6min).
- Average sunshine in September: 6h and 54min
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
Ilmajoki, 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
Ilmajoki, 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
Ilmajoki, 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
Ilmajoki, 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).
