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 is marked by a decrease in temperature, transitioning from an agreeable 20.8°C (69.4°F) in August to a refreshing 15.2°C (59.4°F). An average temperature of 8.3°C (46.9°F) is recorded during the nights in September.Humidity
The average relative humidity in September is 83%.Rainfall
In September, the rain falls for 10.3 days. Throughout September, 20mm (0.79") of precipitation is accumulated. Throughout the year, in Läyliäinen, Finland, there are 117.8 rainfall days, and 373mm (14.69") of precipitation is accumulated.Snowfall
In Läyliäinen, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 53min.On the first day of the month, sunrise is at 06:16 and sunset at 20:27. On the last day of September, in Läyliäinen, sunrise is at 07:26 and sunset at 18:57 EEST.
Sunshine
In September, the average sunshine is 6.9h.UV index
In September, the average daily maximum UV index in Läyliäinen is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Läyliäinen?
What is the average humidity in September in Läyliäinen?
How many days does it rain in September in Läyliäinen?
When it does not snow in Läyliäinen?
Does it snow in Läyliäinen in September?
What is the average length of the day in September in Läyliäinen?
When are sunrise and sunset in September in Läyliäinen?
How long on average sun shines in September in Läyliäinen?
How high is the UV index in September in Läyliäinen?
Average temperature in September
Läyliäinen, Finland
- Average high temperature in September: 15.2°C
The warmest month (with the highest average high temperature) is July (22.2°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in September: 8.3°C
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).
Average pressure in September
Läyliäinen, Finland
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).
Average wind speed in September
Läyliäinen, Finland
- Average wind speed in September: 10km/h
The windiest month (with the highest average wind speed) is December (11.4km/h).
The calmest month (with the lowest average wind speed) is August (9.1km/h).
Average humidity in September
Läyliäinen, Finland
- Average humidity in September: 83%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall in September
Läyliäinen, Finland
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is December (44mm).
The driest month (with the least rainfall) is August (18mm).
Average rainfall days in September
Läyliäinen, Finland
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is November (13.5 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in September
Läyliäinen, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (229mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Läyliäinen, Finland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (22.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Läyliäinen, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Läyliäinen, Finland
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is June (20.8 days).
The month with the least sunshine days is February (6.5 days).
Average UV index in September
Läyliäinen, 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
Läyliäinen, Finland
- Average cloud cover in September: 55
The months with the most cloud cover are January and February (Cloud cover 78).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in September
Läyliäinen, 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 and February (5km).
