Climate Overview
Aland Islands has a highly diverse climate, with major differences between regions. Annual temperatures range from lows of -40°C in the coldest regions to highs of 29°C in the warmest areas. Annual precipitation ranges from 157mm in drier regions to 393mm in wetter parts of the country. Some regions receive significant snowfall, with up to 247cm annually, while other areas see little to none. The warmest areas are hot year-round while the coldest regions remain very cold, making Aland Islands a country of sharp climate contrasts.
Temperature by Region
Temperature patterns across Aland Islands vary by region, with distinct differences between areas. The Central is the warmest part of the country, with peak temperatures reaching 29°C and an annual average of 27°C. Cooler conditions are found in the Central, where winter lows drop to -40°C and an annual average of -22°C. This 49°C difference in annual averages between regions means travellers can experience vastly different conditions depending on which part of Aland Islands they visit. Regional differences are most pronounced in winter, when temperatures across Aland Islands can vary by up to 51°C between regions. For example, Mariehamn in the Mariehamns stad averages 27°C annually, while Hammarland in the Ålands landsbygd averages -22°C.
Precipitation by Region
Aland Islands sees notable variation in rainfall across its regions, ranging from 157mm to 393mm per year. The Central receives the most rainfall, at approximately 393mm annually. The Central is the driest, with around 157mm per year. Rainfall is distributed fairly evenly across the seasons, with no strong wet or dry period in most regions. The Central sees the most snowfall, with up to 247cm annually, while other parts of the country receive little to none. Visitors heading to wetter areas can expect more frequent rain than those staying in drier parts of the country.