September weather forecastVilnius, Lithuania
September
Weather in September
The beautiful season of autumn starts to make its presence known in September. Vilnius transfers from the scorching sun of summer to the mild warmth and eventual chill of fall. With leaves turning crimson and a gold, from parks to pathways, the city dresses itself in a captivating ensemble. As Vilnius bids farewell to summer, the temperatures register a significant drop, dwelling between 7.7°C (45.9°F) and 16.4°C (61.5°F). The transition period marks the advent of the fall season, transforming Vilnius into a colourful tableau.Temperature
September's onset brings a reduction in the average high-temperature, from an agreeable 21.6°C (70.9°F) in August to a comfortable 16.4°C (61.5°F). Vilnius cools down to an average low-temperature of 7.7°C (45.9°F) throughout the month of September.Humidity
In September, the average relative humidity is 78.5%.Rainfall
In Vilnius, in September, it is raining for 9.7 days, with typically 65mm (2.56") of accumulated precipitation. In Vilnius, during the entire year, the rain falls for 174.9 days and collects up to 654mm (25.75") of precipitation.Daylight
In Vilnius, the average length of the day in September is 12h and 43min.On the first day of September, sunrise is at 06:26 and sunset at 20:10. On the last day of the month, sunrise is at 07:20 and sunset at 18:57 EEST.
Sunshine
In September, the average sunshine in Vilnius is 4.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Be vigilant - Suggestions to stave off sun damage are provided. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Vilnius, Lithuania
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is July (22.1°C).
The month with the lowest average high temperature is January (-3.5°C).
- Average low temperature in September: 7.7°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-8.7°C).
Average humidity in September
Vilnius, Lithuania
- Average humidity in September: 78.5%
The month with the highest relative humidity is November (90%).
The month with the lowest relative humidity is April (65.5%).
Average rainfall in September
Vilnius, Lithuania
- Average rainfall in September: 65.2mm
The wettest month (with the highest rainfall) is July (79.3mm).
The driest month (with the least rainfall) is February (34.4mm).
Average rainfall days in September
Vilnius, Lithuania
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is January (21.7 days).
The month with the least rainy days is September (9.7 days).
Average daylight in September /
Average sunshine in September
Vilnius, Lithuania
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 4h and 42min
The month with the most sunshine is May (Average sunshine: 7h and 48min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average UV index in September
Vilnius, Lithuania
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 0).
