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 September arrives, Suolahti's weather displays a decrease in high-temperatures, transitioning from August's enjoyable 19.8°C (67.6°F) to a still refreshing 13.6°C (56.5°F). During September, the nighttime temperature in Suolahti, Finland, averages of 7.1°C (44.8°F).Humidity
In September, the average relative humidity is 83%.Rainfall
In September, the rain falls for 13.2 days. Throughout September, 34mm (1.34") of precipitation is accumulated. Throughout the year, there are 121.2 rainfall days, and 403mm (15.87") of precipitation is accumulated.Snowfall
Months with snowfall in Suolahti, Finland, are January through June, September through December. September is the first month it typically snows in Suolahti. Throughout September, in the average 0.3 snowfall days, it receives 2mm (0.08") of snow. In Suolahti, Finland, during the entire year, snow falls for 96 days and aggregates up to 932mm (36.69") of snow.Daylight
The average length of the day in September in Suolahti is 12h and 58min.On the first day of the month, sunrise is at 06:05 and sunset at 20:27. On the last day of September, in Suolahti, Finland, sunrise is at 07:22 and sunset at 18:50 EEST.
Sunshine
In September, the average sunshine is 6.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 3 during September leads to these advisories:
Guard yourself - Avoiding sunburn is suggested. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Suolahti?
What is the average humidity in September in Suolahti?
How many days does it rain in September in Suolahti?
When does it start snowing in Suolahti?
What is the average length of the day in September in Suolahti?
When are sunrise and sunset in September in Suolahti?
How long on average sun shines in September in Suolahti?
What is the UV index intensity in September in Suolahti?
Average temperature in September
Suolahti, Finland
- Average high temperature in September: 13.6°C
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-5.5°C).
- Average low temperature in September: 7.1°C
The month with the highest average low temperature is July (12.2°C).
The coldest month (with the lowest average low temperature) is January (-9.7°C).
Average pressure in September
Suolahti, Finland
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).
Average wind speed in September
Suolahti, Finland
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is December (12.5km/h).
The calmest month (with the lowest average wind speed) is July (9.6km/h).
Average humidity in September
Suolahti, Finland
- Average humidity in September: 83%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall in September
Suolahti, Finland
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is July (50mm).
The driest months (with the least rainfall) are February and March (23mm).
Average rainfall days in September
Suolahti, Finland
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Suolahti, Finland
- Average snowfall in September: 2mm
The month with the highest snowfall is December (185mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Suolahti, Finland
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (19.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Suolahti, 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 2min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Suolahti, Finland
- Average sunshine days in September: 14 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is December (9.6 days).
Average UV index in September
Suolahti, 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
Suolahti, Finland
- Average cloud cover in September: 58
The month with the most cloud cover is January (Cloud cover 83).
The months with the least cloud cover are July and August (Cloud cover 45).
Average visibility in September
Suolahti, 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 and February (5km).
