UV Index
UV Index
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Today's UV index in Lahti, Finland 
will be up to 0.2, indicating low risk of harm from the sun's UV rays for the average person. Check our tips for today to make sure you're safe in the sun.
Today, the UV index suggests low sun danger (0-2) in Lahti, 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 Lahti.
The UV index in Lahti can range from low to moderate throughout the year. During summer months (June to August), the index tends to reach higher levels, ranging from 4 to 6 (moderate). It is important to protect your skin by wearing sunscreen, hats, and sunglasses, especially between 11 am and 4 pm when the sun's rays are the strongest.
Lahti experiences four distinct seasons. Winter (December to February) brings cold temperatures, with average highs of -3 °C (26.6 °F) and lows of -11 °C (12.2 °F). Snowfall is common, creating a picturesque winter landscape. Spring (March to May) brings milder temperatures, with highs ranging from 4 °C (39.2 °F) to 12 °C (53.6 °F). Summer (June to August) is usually pleasant, with average highs of 20 °C (68 °F) and lows of 10 °C (50 °F). Autumn (September to November) is characterized by cooler temperatures, ranging from 7 °C (44.6 °F) to 14 °C (57.2 °F) and beautiful fall foliage.
Lahti, located in southern Finland, enjoys more sunlight compared to its northern regions. In the summer, the sun rises early and sets late, providing long daylight hours for outdoor activities. However, during winter, the region experiences shorter daylight hours, sometimes with only a few hours of sun. It is important to make the most of the daylight by engaging in outdoor activities and ensuring a proper intake of Vitamin D through diet or supplements.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Lahti. It's designed to provide you with a better understanding of the yearly weather and sun exposure.