With a population of around 1,000, Bomarsund sits in Alands landsbygd, AX. The city operates in the Europe/Mariehamn time zone.
Recent weather here gives a sense of typical conditions: in 2025, Bomarsund recorded a mean annual temperature of 47°F, ranging from 15°F lows in January to 80°F highs in July, with about 26 inches of precipitation across the year.
View historical weather for Bomarsund · More cities in Alands landsbygd