UV Index
UV Index
Today's UV index in Kajaani, Finland 
will be up to 4.3, indicating a moderate level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-07-29
With a UV index reaching up to 4.3 in Kajaani, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
The UV index in Kajaani usually stays low, often around 1 or 2 in spring and summer, because it is quite far north. In winter, it can be near zero since the sun is weak or not visible.
Kajaani experiences cold, snowy winters with temperatures often below freezing, and short, mild summers with temperatures around 15 to 20 degrees Celsius. Spring and autumn are brief with quickly changing weather.
Compared to southern Finland and neighboring Sweden, Kajaani is colder and snowier in winter. It has a shorter growing season and less sunlight during winter months than places further south in Finland or Estonia.
See the UV index hour by hour for Kajaani, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.