Today, the UV index suggests low sun danger (0-2) in Helsinki, reaching up to 0.2. Remember sunglasses and SPF 30+ on sunny days, and be cautious around reflective surfaces like sand, water, and snow for increased UV exposure.
Read more here about the climate and sun exposure in and around Helsinki.
The UV index in Helsinki, Finland, typically ranges from 1 to 5. It is generally low due to the city's high latitude and cloudy weather. However, it can increase to moderate levels during the summer months when the sun is stronger. It is important to protect your skin by wearing sunscreen, hats, and sunglasses when the UV index is higher.
Helsinki experiences four distinct seasons. Winter (December to February) is cold, with temperatures averaging around -5 °C (23 °F) and occasional snowfall. Spring (March to May) brings milder temperatures, ranging from 0 °C to 10 °C (32 °F to 50 °F), and the city starts to bloom. Summer (June to August) is relatively mild, with temperatures ranging from 15 °C to 25 °C (59 °F to 77 °F). Autumn (September to November) is a bit chilly, with temperatures dropping from 10 °C to 0 °C (50 °F to 32 °F), and nature displays beautiful fall colors.
Compared to its region, Helsinki receives less sunshine due to its northerly location. In summer, it enjoys long daylight hours, with the sun setting as late as 11 pm. However, during winter, daylight is limited to a few hours, and the sun sets as early as 3 pm. The city experiences the "Midnight Sun" phenomenon during the summer solstice, where the sun doesn't set at all. This variation in sun exposure throughout the year contributes to the unique experience of living in Helsinki.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Helsinki. It's designed to provide you with a better understanding of the yearly weather and sun exposure.