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, Aitoniemi sees a drop in the average high-temperature, transitioning from an agreeable 20.4°C (68.7°F) to a mild 14.6°C (58.3°F). Aitoniemi's average low-temperature in September is measured at a chilly 7.5°C (45.5°F).Humidity
The average relative humidity in September is 82%.Rainfall
In Aitoniemi, Finland, during September, the rain falls for 11.4 days and regularly aggregates up to 17mm (0.67") of precipitation. Throughout the year, there are 114.5 rainfall days, and 256mm (10.08") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 55min.On the first day of September, sunrise is at 06:16 and sunset at 20:32. On the last day of the month, sunrise is at 07:30 and sunset at 18:58 EEST.
Sunshine
The average sunshine in September in Aitoniemi, Finland, is 6.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September in Aitoniemi?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Aitoniemi have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Aitoniemi have in September?
How high is the UV index in September?
Average temperature in September
Aitoniemi, Finland
- Average high temperature in September: 14.6°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (-4.3°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is January (-8.4°C).
Average pressure in September
Aitoniemi, Finland
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.5mbar).
Average wind speed in September
Aitoniemi, Finland
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is December (12.6km/h).
The calmest month (with the lowest average wind speed) is July (10km/h).
Average humidity in September
Aitoniemi, Finland
- Average humidity in September: 82%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in September
Aitoniemi, Finland
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is July (37mm).
The driest months (with the least rainfall) are March and April (16mm).
Average rainfall days in September
Aitoniemi, Finland
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Aitoniemi, Finland
- Average snowfall in September: 0mm
The months with the highest snowfall are January, February and March (86mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Aitoniemi, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (17.8 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Aitoniemi, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 24min).
The month with the shortest days is December (Average daylight: 5h and 30min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in September
Aitoniemi, Finland
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is October (17.1 days).
The month with the least sunshine days is February (10.4 days).
Average UV index in September
Aitoniemi, Finland
- Average UV index in September: 3
The months with the highest UV index are June and 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
Aitoniemi, Finland
- Average cloud cover in September: 56
The month with the most cloud cover is February (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 44).
Average visibility in September
Aitoniemi, Finland
- Average visibility in September: 8km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January, February and March (6km).
