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
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from 19.2°C (66.6°F) in August to a still refreshing 14.8°C (58.6°F). Suulisniemi documents a consistent average low-temperature of 11.2°C (52.2°F) at night during September.Humidity
The average relative humidity in September is 79%.Rainfall
In September, the rain falls for 16.4 days. Throughout September, 53mm (2.09") of precipitation is accumulated. In Suulisniemi, during the entire year, the rain falls for 158.3 days and collects up to 571mm (22.48") of precipitation.Snowfall
In Suulisniemi, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 53min.On the first day of September, sunrise is at 06:07 and sunset at 20:16. On the last day of the month, sunrise is at 07:16 and sunset at 18:47 EEST.
Sunshine
The average sunshine in September in Suulisniemi is 7.3h.UV index
In September, the average daily maximum UV index in Suulisniemi is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Suulisniemi in September?
What is the average humidity in September in Suulisniemi?
How much does it rain in Suulisniemi in September?
When it does not snow in Suulisniemi?
Does it snow in Suulisniemi in September?
What is the average length of the day in September in Suulisniemi?
What time are sunrise and sunset in September in Suulisniemi?
How long on average sun shines in September in Suulisniemi?
How high is the UV index in September in Suulisniemi?
Average temperature in September
Suulisniemi, Finland
- Average high temperature in September: 14.8°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The month with the lowest average high temperature is February (-2.7°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is February (-6.3°C).
Average pressure in September
Suulisniemi, Finland
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Suulisniemi, Finland
- Average wind speed in September: 19.3km/h
The windiest month (with the highest average wind speed) is December (23.7km/h).
The calmest month (with the lowest average wind speed) is July (15.5km/h).
Average humidity in September
Suulisniemi, Finland
- Average humidity in September: 79%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Suulisniemi, Finland
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is August (67mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Suulisniemi, Finland
- Average rainfall days in September: 16.4 days
The month with the highest number of rainy days is October (17.6 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Suulisniemi, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (148mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Suulisniemi, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Suulisniemi, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in September
Suulisniemi, Finland
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is May (15.2 days).
The month with the least sunshine days is December (6.4 days).
Average UV index in September
Suulisniemi, 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
Suulisniemi, Finland
- Average cloud cover in September: 48
The months with the most cloud cover are January and December (Cloud cover 77).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Suulisniemi, Finland
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March and December (8km).
