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 onset of September comes with a shift in the average high-temperature, falling from a comfortable 19.6°C (67.3°F) in August to a still refreshing 14.5°C (58.1°F). An average nighttime temperature of 7.3°C (45.1°F) is witnessed in Jalasjärvi throughout September.Humidity
In Jalasjärvi, the average relative humidity in September is 82%.Rainfall
In Jalasjärvi, in September, during 15.4 rainfall days, 42mm (1.65") of precipitation is typically accumulated. Throughout the year, in Jalasjärvi, there are 135.2 rainfall days, and 441mm (17.36") of precipitation is accumulated.Snowfall
In Jalasjärvi, Finland, snow does not fall in June through September.Daylight
In Jalasjärvi, Finland, the average length of the day in September is 12h and 57min.On the first day of the month, sunrise is at 06:18 and sunset at 20:39. On the last day of September, in Jalasjärvi, sunrise is at 07:35 and sunset at 19:02 EEST.
Sunshine
In Jalasjärvi, Finland, the average sunshine in September is 6.7h.UV index
The average daily maximum UV index in September in Jalasjärvi is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Jalasjärvi in September?
What is the average humidity in September in Jalasjärvi?
How much does it rain in Jalasjärvi in September?
When it does not snow in Jalasjärvi?
Does it snow in Jalasjärvi in September?
How many hours of daylight does Jalasjärvi have in September?
When are sunrise and sunset in September in Jalasjärvi?
How long on average sun shines in September in Jalasjärvi?
What is the UV index reading in September in Jalasjärvi?
Average temperature in September
Jalasjärvi, 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: 7.3°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
Jalasjärvi, Finland
- Average pressure in September: 1011.8mbar
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
Jalasjärvi, Finland
- Average wind speed in September: 10.7km/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
Jalasjärvi, 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
Jalasjärvi, Finland
- Average rainfall in September: 42mm
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
Jalasjärvi, Finland
- Average rainfall days in September: 15.4 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
Jalasjärvi, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (144mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Jalasjärvi, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (16.2 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jalasjärvi, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 19h and 48min).
The month with the shortest days is December (Average daylight: 5h and 12min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 0h and 54min).
Average sunshine days in September
Jalasjärvi, Finland
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is February (15 days).
The month with the least sunshine days is November (10.5 days).
Average UV index in September
Jalasjärvi, 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
Jalasjärvi, 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
Jalasjärvi, 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).
