Mariehamn
Capital of Åland
Mariehamn is the capital of Åland, with a population of about 12,000 as of 2025. Visitors come to the city to explore its maritime heritage through historic vessels and specialized museums.
What to see
The city focuses on its maritime history. The Åland Maritime Museum displays exhibits detailing the region's seafaring past. Nearby, the Pommern, a historic ship, serves as a primary site for visitors.
When to go
Temperatures are mildest from June to August, with averages between 12 °C and 16 °C. July and August see the most rain, with 48 mm and 70 mm respectively, though rainy days are less frequent in June. From November through January, temperatures drop near or below freezing, and rainy days increase to between 13 and 14 per month.
Getting there
Mariehamn Airport is located 4 km from the city. For international connections, Stockholm-Arlanda Airport in Sweden is 123 km away.
Top sights in Mariehamn
Weather by month
The warmest month is August, averaging 16 °C. The wettest is August, with about 70 mm of rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average temperature, °C | -1 | -2 | -1 | 3 | 7 | 12 | 16 | 16 | 13 | 8 | 4 | 1 |
| Rainfall, mm | 45 | 29 | 28 | 26 | 33 | 48 | 48 | 70 | 54 | 63 | 63 | 52 |
| Rainy days | 13 | 10 | 10 | 7 | 6 | 6 | 11 | 12 | 10 | 12 | 13 | 15 |
Temperatures and rainfall: 1981–2010 averages for Mariehamn (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.