Weather in Vilnius in September 2025
Average weather
Average temperature in Vilnius in September
The temperature in September is +23°C on average, with a range between a maximum of +27°C during the day and a minimum of +8°C at night.
The average maximum temperature goes down 5% by the end of the month, compared with the beginning of the month, from +20°C to +19°C.
Is Vilnius warm or cold in September?
Vilnius is typically mild in September.
Maximum temperatures go down compared to the previous month from +22°C to +17°C. The minimum temperature also goes down from +13°C to +8°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Vilnius:
Climate in Vilnius in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +22°C | +17°C | +10°C | ||||
| Min. temperature | ||||||
| +4°C | -4°C | -12°C | ||||
| Max. temperature | ||||||
| +34°C | +31°C | +22°C | ||||
| Rainfall | ||||||
| 78 mm | 54 mm | 46 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 3 m/s | ||||
| Humidity | ||||||
| 75% | 80% | 84% | ||||
| Air pressure | ||||||
| 1013 HPa | 1014 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 6 | 5 | 4 | ||||
| Cloudy days | ||||||
| 6 | 8 | 11 | ||||
| Rainy days | ||||||
| 17 | 16 | 15 | ||||
| Snowy days | ||||||
| 0 | 0 | 1 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +22°C in the day, the average maximum temperature lowers to +17°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 78 mm to 54 mm. Humidity rises from 75% to 80%. The average wind speed doesn’t change much during September, staying around 2 m/s. The days becoming less sunny, going from 6 sunny days in August to 5 in September.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Vilnius is gradually increasing during September, going from 3 m/s to 3 m/s over the course of the month.
Rain
How was the weather last September in Vilnius?
Climate Change over Years
The climate in Vilnius in September has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+8°C) and the highest in 2019 (+13°C). The driest year was 1991 with only 276 mm of rainfall, and the wettest year was 2021 with 901 mm.
FAQ
Is September a good time to visit Vilnius?
Can you sunbathe in Vilnius in September?
Is Vilnius rainy in September?
Is it sunny in Vilnius in September?
Other cities in Lithuania
Monthly weather in Vilnius
Source of the data
For this page, we’ve looked at the typical weather in Vilnius, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.