UV Index
UV Index
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Today's UV index in Mariehamn, Åland Islands 
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 Mariehamn, 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 Mariehamn.
The UV index in Mariehamn, Åland Islands, can vary throughout the year. In the summer months of June, July, and August, the UV index can reach high levels, typically ranging between 6 and 8. It is important to protect your skin by using sunscreen, wearing protective clothing, and seeking shade during peak sun hours to reduce the risk of sunburn and skin damage.
Mariehamn experiences four distinct weather seasons. Spring (March to May) brings milder temperatures ranging from 2 °C to 10 °C (36 °F to 50 °F). Summer (June to August) is pleasant with temperatures averaging between 15 °C and 20 °C (59 °F and 68 °F). Autumn (September to November) becomes cooler with temperatures dropping to 5 °C to 12 °C (41 °F to 54 °F). Winter (December to February) is cold, with temperatures ranging from -2 °C to -10 °C (28 °F to 14 °F). Snowfall is common during the winter months.
Compared to other regions, Mariehamn experiences less sun exposure due to its northern latitude. The Åland Islands are situated in the Baltic Sea and have shorter daylight hours during winter. During the summer, however, the length of daylight increases significantly, providing more opportunities to enjoy the outdoors. It is still important to protect your skin from harmful UV rays, even in areas with less sun exposure.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Mariehamn. It's designed to provide you with a better understanding of the yearly weather and sun exposure.