September weather forecast
Rovaniemi, Finland

September transitions Rovaniemi from summer to autumn, replicating the cool crispness of autumn’s arrival. Average high temperature dips to 10.4°C (50.7°F), adding a new chill in the air. Dropping leaves and changing colors paint the landscapes of Rovaniemi in vast arrays of reds, oranges, and browns. The longer shadows and shortening days hint at the coming winter. Daylight hours fall to 13.1 while the UV index reduces to 2, reflecting the weakening sun.

Temperature

Rovaniemi's September weather shows a moderate shift in high-temperatures, falling from August's enjoyable 16.5°C (61.7°F) to a cool 10.4°C (50.7°F). An average minimum temperature of 4.2°C (39.6°F) is recorded in Rovaniemi during the month of September.

Rainfall

In September, the rain falls for 9 days. Throughout September, 54mm (2.13") of precipitation is accumulated. Throughout the year, there are 115 rainfall days, and 577mm (22.72") of precipitation is accumulated.

Daylight

The average length of the day in September is 13h and 8min.
On the first day of the month, sunrise is at 05:52 and sunset at 20:41. On the last day of September, sunrise is at 07:26 and sunset at 18:47 EEST.

Sunshine

In September, the average sunshine is 3.7h.

UV index

In September, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 in September interprets into the following advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. When the Sun is at its strongest around midday, find shade and limit exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.