Mariehamn weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Poor
Best time to visit: June – August
What is the weather like in Mariehamn in March?
In March, Mariehamn is freezing cold: daytime highs average 2 °C, and nights often drop below freezing (−1 °C). The sea averages 1.4 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Precipitation, often as snow, falls on about 7 days, totalling 26 mm. Snow falls on about 4 days. All in all, March is not an ideal month for a holiday in Mariehamn.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 22 | 30 | 39 |
| Day | 0° | 2° | 5° |
| Night | −3° | −1° | 2° |
| Sea | 1° | 1° | 3° |
| Sun | 2 h | 5 h | 8 h |
| Rain days | 8 | 7 | 7 |
More details for March
- Daylight
- 11 h 39 min07:00 – 18:40
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 64 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 4 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Mariehamn
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %30 %
- Few rainy daysweight 30 %81 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in March
- Warm jacket
- Hat, scarf & gloves
Mariehamn in March: quick answers
Is Mariehamn hot in March?
No. In March, Mariehamn is freezing cold: daytime highs average 2 °C and nights drop to about −1 °C.
Can you swim in Mariehamn in March?
Only if you don't mind cold water: in March the sea averages just 1.4 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Mariehamn in March?
Rain falls on about 7 days, adding up to 26 mm.
Mariehamn month by month
The whole year in MariehamnAll destinations: Åland IslandsWhere to go in MarchSea temperature in March
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences